0000077360-25-000047 | 10-Q | XBRL Viewer

Restructuring and Transformation Program

9 Months Ended

Sep. 30, 2025

Restructuring and Related Activities [Abstract]

Restructuring and Transformation Program

In 2021, we launched and committed resources to a program designed to accelerate growth and drive margin expansion through transformation of our business model to drive operational excellence, reduce complexity and streamline our processes (the “Transformation Program”). The Transformation Program is structured in multiple phases and is expected to empower us to work more efficiently and optimize our business to better serve our customers while meeting our financial objectives.

During the nine months ended September 30, 2025, we initiated and continued execution of activities associated with our Transformation Program as well as initiated and continued certain business restructuring initiatives aimed at reducing our fixed cost structure and realigning our business. Restructuring and Transformation Program initiatives included a reduction in hourly and salaried headcount of approximately 230 employees during the nine months ended September 30, 2025.

Restructuring and transformation-related costs included within Cost of goods sold and Selling, general and administrative expenses in the Condensed Consolidated Statements of Operations and Comprehensive Income included the following:


	Three months ended				Nine months ended
In millions	September 30, 2025		September 30, 2024		September 30, 2025		September 30, 2024
Restructuring Initiatives
Severance and related costs	$	—	$	17.4	$	20.3	$	26.8

Other restructuring costs and related adjustments (1)	1.1		10.9		6.0		11.8
Total restructuring costs	1.1		28.3		26.3		38.6
Transformation Program
Severance and related costs	—		—		—		0.7
Asset impairment and write-offs	0.7		2.8		16.2		2.8
Other transformation costs (2)	10.8		12.6		32.4		40.7
Total transformation costs	11.5		15.4		48.6		44.2
Total restructuring and transformation costs	$	12.6	$	43.7	$	74.9	$	82.8
(1) Other restructuring costs and related adjustments primarily consist of certain accruals and related refinements as well as various contract termination costs, asset impairments and inventory write-offs associated with business and product line exits.
(2) Other transformation costs primarily consist of professional services and project management related costs.

Restructuring and transformation costs by reportable segment as well as Corporate and other were as follows:


	Three months ended				Nine months ended
In millions	September 30, 2025		September 30, 2024		September 30, 2025		September 30, 2024
Flow	$	(1.4)	$	6.0	$	17.1	$	11.0
Water Solutions	0.9		16.2		10.7		17.7
Pool	2.8		4.7		11.8		10.1
Corporate and other	10.3		16.8		35.3		44.0
Total restructuring and transformation costs	$	12.6	$	43.7	$	74.9	$	82.8

Activity related to accrued severance and related costs recorded in Other current liabilities in the Condensed Consolidated Balance Sheets is summarized as follows for the nine months ended September 30, 2025:


In millions	September 30, 2025
Beginning balance	$	18.7

Costs incurred	20.3
Cash payments and other	(26.1)
Ending balance	$	12.9

Goodwill and Other Identifiable Intangible Assets - Estimated Future Amortization Expense for Identifiable Intangible Assets (Detail) $ in Millions	Sep. 30, 2025 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Q4 2025	$ 15.7
2026	61.5
2027	60.2
2028	57.6
2029	57.1
2030	$ 56.6

Share Plans - Schedule of Share-based Compensation Expense (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	$ 6.1	$ 10.0	$ 27.3	$ 26.3
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	3.8	4.4	11.0	12.5
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	0.6	1.3	4.1	4.0
Performance share units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	$ 1.7	$ 4.3	$ 12.2	$ 9.8

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Supplemental Balance Sheet Information

9 Months Ended

Sep. 30, 2025

Disclosure Supplemental Balance Sheet Information [Abstract]

Supplemental Balance Sheet Information


In millions	September 30, 2025		December 31, 2024
Inventories
Raw materials and supplies	$	320.4	$	315.8
Work-in-process	89.9		88.4
Finished goods	229.4		206.7
Total inventories	$	639.7	$	610.9
Other current assets
Cost in excess of billings	$	61.2	$	46.7
Prepaid expenses	79.8		51.0

Other current assets	14.4		43.6
Total other current assets	$	155.4	$	141.3
Property, plant and equipment, net
Land and land improvements	$	33.0	$	31.3
Buildings and leasehold improvements	237.1		217.9
Machinery and equipment	709.6		675.8
Capitalized software	99.1		92.2
Construction in progress	43.6		51.1
Total property, plant and equipment	1,122.4		1,068.3
Accumulated depreciation and amortization	755.3		709.5
Total property, plant and equipment, net	$	367.1	$	358.8
Other non-current assets
Right-of-use lease assets	$	108.1	$	116.1

Deferred income taxes	130.2		129.6
Deferred compensation plan assets	31.4		29.4

Other non-current assets	60.9		56.1
Total other non-current assets	$	330.6	$	331.2
Other current liabilities

Dividends payable	$	41.0	$	41.2
Accrued warranty	69.1		67.2
Accrued rebates and incentives	202.2		176.7
Accrued freight	15.3		18.4
Billings in excess of cost	37.9		33.8
Current lease liability	26.1		26.3
Income taxes payable	38.6		28.8
Accrued restructuring	12.9		18.7
Interest payable	11.6		5.5
Other current liabilities	112.8		80.2
Total other current liabilities	$	567.5	$	496.8
Other non-current liabilities
Long-term lease liability	$	86.7	$	92.8
Income taxes payable	6.2		8.1
Self-insurance liabilities	59.1		55.6
Deferred compensation plan liabilities	31.4		29.4
Foreign currency and interest rate contract liabilities	88.3		16.3
Other non-current liabilities	39.4		41.6
Total other non-current liabilities	$	311.1	$	243.8

Debt (Tables)

9 Months Ended

Sep. 30, 2025

Debt Disclosure [Abstract]

Debt and Average Interest Rates on Debt Outstanding

Debt and the average interest rates on debt outstanding were as follows:


In millions	Average interest rate as of September 30, 2025	Maturity Year	September 30, 2025		December 31, 2024

Revolving credit facility (Senior Credit Facility)	5.268%	2030	$	220.0	$	9.5
Term Loan Facility	5.502%	2027	575.0		825.0

Senior notes - fixed rate (1)	N/A	2025	—		19.3
Senior notes - fixed rate (1)	4.500%	2029	400.0		400.0
Senior notes - fixed rate (1)	5.900%	2032	400.0		400.0
Other	N/A	2025	—		9.3
Unamortized debt issuance costs and discounts	N/A	N/A	(14.9)		(15.1)
Total debt			1,580.1		1,648.0
Less: Current maturities of short-term borrowings			—		9.3
Long-term debt			$	1,580.1	$	1,638.7
(1) Senior notes are guaranteed as to payment by Pentair plc.

Debt Outstanding Matures on Calendar Year Basis

Debt outstanding, excluding unamortized issuance costs and discounts, at September 30, 2025 matures on a calendar year basis as follows:


	Q4
In millions	2025		2026		2027		2028		2029		2030		Thereafter		Total
Contractual debt obligation maturities	$	—	$	—	$	575.0	$	—	$	400.0	$	220.0	$	400.0	$	1,595.0

Goodwill and Other Identifiable Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2025

Goodwill and Intangible Assets Disclosure [Abstract]

Carrying Amount of Goodwill by Segment

The changes in the carrying amount of goodwill by reportable segment were as follows:


In millions	December 31, 2024		Acquisitions		Foreign Currency Translation		September 30, 2025
Flow	$	730.4	$	166.6	$	62.1	$	959.1
Water Solutions	1,392.7		—		13.5		1,406.2
Pool	1,163.5		—		—		1,163.5
Total goodwill	$	3,286.6	$	166.6	$	75.6	$	3,528.8

Detail of Identifiable Intangible Assets

Identifiable intangible assets consisted of the following:


	September 30, 2025						December 31, 2024
In millions	Cost		Accumulated amortization		Net		Cost		Accumulated amortization		Net
Definite-life intangibles
Customer relationships	$	1,163.9	$	(373.5)	$	790.4	$	1,146.5	$	(400.2)	$	746.3
Proprietary technology and patents	82.3		(39.8)		42.5		88.8		(48.4)		40.4


Total definite-life intangibles	1,246.2		(413.3)		832.9		1,235.3		(448.6)		786.7
Indefinite-life intangibles
Trade names	255.1		—		255.1		247.1		—		247.1
Total intangibles	$	1,501.3	$	(413.3)	$	1,088.0	$	1,482.4	$	(448.6)	$	1,033.8

Estimated Future Amortization Expense for Identifiable Intangible Assets

Estimated future amortization expense for identifiable intangible assets during the remainder of 2025 and the next five years is as follows:


	Q4
	2025		2026		2027		2028		2029		2030
Estimated amortization expense	$	15.7	$	61.5	$	60.2	$	57.6	$	57.1	$	56.6

- Definition

Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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+ Details

Benefit Plans (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
Benefit Plans (Detail) - USD ($) $ in Millions	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Retirement Benefits [Abstract]
Service cost	$ 0.3	$ 0.4	$ 0.9	$ 1.2
Interest cost	1.0	1.0	3.0	3.0
Expected return on plan assets	(0.2)	(0.1)	(0.6)	(0.3)
Net periodic benefit cost	$ 1.1	$ 1.3	$ 3.3	$ 3.9

Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2025

Commitments and Contingencies Disclosure [Abstract]

Changes in Carrying Amount of Service and Product Warranties

The changes in the carrying amount of service and product warranties from continuing operations for the nine months ended September 30, 2025 were as follows:


In millions	September 30, 2025
Beginning balance	$	67.2
Service and product warranty provision	34.4
Payments	(33.3)

Foreign currency translation	0.8
Ending balance	$	69.1

Share Plans

9 Months Ended

Sep. 30, 2025

Share-Based Payment Arrangement [Abstract]

Share Plans

Total share-based compensation expense for the three and nine months ended September 30, 2025 and 2024 was as follows:


	Three months ended				Nine months ended
In millions	September 30, 2025		September 30, 2024		September 30, 2025		September 30, 2024
Restricted stock units	$	3.8	$	4.4	$	11.0	$	12.5
Stock options	0.6		1.3		4.1		4.0
Performance share units	1.7		4.3		12.2		9.8
Total share-based compensation expense	$	6.1	$	10.0	$	27.3	$	26.3

In the first quarter of 2025, we issued our annual share-based compensation grants under the Pentair plc 2020 Share and Incentive Plan to eligible employees. The total number of awards issued was approximately 0.4 million, of which 0.2 million were restricted stock units (“RSUs”), 0.1 million were stock options and 0.1 million were performance share units (“PSUs”). The weighted-average grant date fair value of the RSUs, stock options and PSUs issued was $93.69, $36.73 and $99.16, respectively.

We estimated the fair value of each stock option award issued in the annual share-based compensation grant using a Black-Scholes option pricing model, modified for dividends and using the following assumptions:


	2025 Annual Grant
Risk-free interest rate	4.12	%
Expected dividend yield	0.98	%
Expected share price volatility	31.10	%
Expected term (years)	6.9

These estimates require us to make assumptions based on historical results, observance of trends in our share price, changes in option exercise behavior, future expectations and other relevant factors. If other assumptions had been used, share-based compensation expense, as calculated and recorded under the accounting guidance, could have been affected. We based the expected life assumption on historical experience as well as the terms and vesting periods of the options granted. For purposes of determining expected share price volatility, we considered a rolling average of historical volatility measured over a period approximately equal to the expected option term. The risk-free interest rate for periods that coincide with the expected life of the options is based on the U.S. Treasury Department yield curve in effect at the time of grant.

Revenue - Geographic Net Sales Information by Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Disaggregation of Revenue [Line Items]
Net sales	$ 1,022.0	$ 993.4	$ 3,155.5	$ 3,109.9
Residential
Disaggregation of Revenue [Line Items]
Net sales	568.3	519.5	1,796.0	1,644.1
Commercial
Disaggregation of Revenue [Line Items]
Net sales	257.6	282.7	781.8	864.9
Industrial
Disaggregation of Revenue [Line Items]
Net sales	196.1	191.2	577.7	600.9
U.S.
Disaggregation of Revenue [Line Items]
Net sales	703.9	687.6	2,236.0	2,166.4
Western Europe
Disaggregation of Revenue [Line Items]
Net sales	126.7	117.0	371.8	375.8
Developing
Disaggregation of Revenue [Line Items]
Net sales	130.6	129.9	375.8	391.9
Other Developed
Disaggregation of Revenue [Line Items]
Net sales	$ 60.8	$ 58.9	$ 171.9	$ 175.8

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details

Benefit Plans

9 Months Ended

Sep. 30, 2025

Retirement Benefits [Abstract]

Benefit Plans

Components of net periodic benefit expense for our pension plans for the three and nine months ended September 30, 2025 and 2024 were as follows:


	Three months ended				Nine months ended
In millions	September 30, 2025		September 30, 2024		September 30, 2025		September 30, 2024
Service cost	$	0.3	$	0.4	$	0.9	$	1.2
Interest cost	1.0		1.0		3.0		3.0
Expected return on plan assets	(0.2)		(0.1)		(0.6)		(0.3)

Net periodic benefit expense	$	1.1	$	1.3	$	3.3	$	3.9

Components of net periodic benefit expense for our other post-retirement plans for the three and nine months ended September 30, 2025 and 2024 were not material

- Definition

The entire disclosure for retirement benefits.

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+ Details

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Letters of credit outstanding	$ 105.1	$ 102.1

Goodwill and Other Identifiable Intangible Assets - Detail of Identifiable Intangible Assets (Detail) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Acquired Intangible Assets By Major Class [Line Items]
Cost	$ 1,246.2	$ 1,235.3
Accumulated amortization	(413.3)	(448.6)
Net	832.9	786.7
Cost	1,501.3	1,482.4
Net	1,088.0	1,033.8
Trade names intangibles
Acquired Intangible Assets By Major Class [Line Items]
Net, indefinite-life intangibles	255.1	247.1
Customer relationships
Acquired Intangible Assets By Major Class [Line Items]
Cost	1,163.9	1,146.5
Accumulated amortization	(373.5)	(400.2)
Net	790.4	746.3
Proprietary technology and patents
Acquired Intangible Assets By Major Class [Line Items]
Cost	82.3	88.8
Accumulated amortization	(39.8)	(48.4)
Net	$ 42.5	$ 40.4

Accounts Receivable (Details) $ in Millions	9 Months Ended
Accounts Receivable (Details) $ in Millions	Sep. 30, 2025 USD ($)
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 9.1
Bad debt benefit	(1.9)
Write-offs, net of recoveries	(0.7)
Other	0.2
Ending balance	$ 6.7

Share Plans (Tables)

9 Months Ended

Sep. 30, 2025

Share-Based Payment Arrangement [Abstract]

Share-based Compensation Expense

Total share-based compensation expense for the three and nine months ended September 30, 2025 and 2024 was as follows:


	Three months ended				Nine months ended
In millions	September 30, 2025		September 30, 2024		September 30, 2025		September 30, 2024
Restricted stock units	$	3.8	$	4.4	$	11.0	$	12.5
Stock options	0.6		1.3		4.1		4.0
Performance share units	1.7		4.3		12.2		9.8
Total share-based compensation expense	$	6.1	$	10.0	$	27.3	$	26.3

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions


	2025 Annual Grant
Risk-free interest rate	4.12	%
Expected dividend yield	0.98	%
Expected share price volatility	31.10	%
Expected term (years)	6.9

Cover	9 Months Ended
Cover	Sep. 30, 2025 shares
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2025
Document Transition Report	false
Entity File Number	001-11625
Entity Registrant Name	Pentair plc
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0000077360
Entity Incorporation, State or Country Code	L2
Entity Tax Identification Number	98-1141328
Entity Address, Address Line One	Regal House, 70 London Road,
Entity Address, Address Line Two	Twickenham,
Entity Address, City or Town	London,
Entity Address, Postal Zip Code	TW13QS
Entity Address, Country	GB
Country Region	44
City Area Code	74
Local Phone Number	9421-6154
Title of 12(b) Security	Ordinary Shares, nominal value $0.01 per share
Trading Symbol	PNR
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Amendment Flag	false
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	163,641,880

Basis of Presentation and Responsibility for Interim Financial Statements	9 Months Ended
	Sep. 30, 2025
Accounting Policies [Abstract]
Basis of Presentation and Responsibility for Interim Financial Statements	Basis of Presentation and Responsibility for Interim Financial Statements The accompanying unaudited condensed consolidated financial statements of Pentair plc and its subsidiaries (“we,” “us,” “our,” or “Pentair”) have been prepared following the requirements of the United States (“U.S.”) Securities and Exchange Commission for interim reporting. As permitted under those rules, certain footnotes or other financial information that are normally required by accounting principles generally accepted in the United States of America (“GAAP”) can be condensed or omitted. We are responsible for the unaudited condensed consolidated financial statements included in this document. The financial statements include all normal recurring adjustments that are considered necessary for the fair presentation of our financial position and operating results. As these are condensed financial statements, one should also read our consolidated financial statements and notes thereto, which are included in our Annual Report on Form 10-K for the year ended December 31, 2024. Revenues, expenses, cash flows, assets and liabilities can and do vary during each quarter of the year. Therefore, the results and trends in these interim financial statements may not be indicative of those for a full year. Our fiscal year ends on December 31. We report our interim quarterly periods on a calendar quarter basis.

Share Plans - Schedule of Valuation Assumptions (Details)	9 Months Ended
	Sep. 30, 2025
Share-Based Payment Arrangement [Abstract]
Risk-free interest rate	4.12%
Expected dividend yield	0.98%
Expected share price volatility	31.10%
Expected term (years)	6 years 10 months 24 days

Derivatives and Financial Instruments - Additional Information (Detail) € in Millions, $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)	Oct. 03, 2025 EUR (€)	Dec. 02, 2024 USD ($)
Derivative [Line Items]
AOCI, cash flow hedge, cumulative gain (loss)	$ (0.1)	$ 1.9
Contingent earn-out liabilities				$ 8.0
Foreign Exchange Contract
Derivative [Line Items]
Notional amount	51.8	0.0
Currency Swap
Derivative [Line Items]
Notional amount	816.6	728.5
Loss on derivative hedge	87.9	$ 13.8
Currency Swap \| Subsequent Event
Derivative [Line Items]
Notional amount \| €			€ 212
Interest Rate Swap
Derivative [Line Items]
Notional amount	300.0
Interest Rate Collar
Derivative [Line Items]
Notional amount	$ 200.0

Derivatives and Financial Instruments - Recorded Amounts and Estimated Fair Values (Detail) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Derivative [Line Items]
Total debt	$ 1,580.1	$ 1,638.7
Recorded Amount
Derivative [Line Items]
Variable rate debt	795.0	843.8
Fixed rate debt	800.0	819.3
Total debt	1,595.0	1,663.1
Fair Value
Derivative [Line Items]
Variable rate debt	795.0	843.8
Fixed rate debt	826.4	814.3
Total debt	$ 1,621.4	$ 1,658.1

- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

+ References

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+ Details

Revenue

9 Months Ended

Sep. 30, 2025

Revenue from Contract with Customer [Abstract]

Revenue

We disaggregate our revenue from contracts with customers by reportable segment, geographic location and vertical market, as we believe these best depict how the nature, amount, timing and uncertainty of our revenue and cash flows are affected by economic factors. Refer to Note 15 for revenue disaggregated by reportable segment.

Geographic net sales information, based on geographic destination of the sale, was as follows:


	Three months ended				Nine months ended
In millions	September 30, 2025		September 30, 2024		September 30, 2025		September 30, 2024
U.S.	$	703.9	$	687.6	$	2,236.0	$	2,166.4
Western Europe	126.7		117.0		371.8		375.8
Developing (1)	130.6		129.9		375.8		391.9
Other Developed (2)	60.8		58.9		171.9		175.8
Consolidated net sales	$	1,022.0	$	993.4	$	3,155.5	$	3,109.9


(1) Developing includes China, Eastern Europe, Latin America, the Middle East and Southeast Asia.
(2) Other Developed primarily includes Australia and Canada.

Vertical market net sales information was as follows:


	Three months ended				Nine months ended
In millions	September 30, 2025		September 30, 2024		September 30, 2025		September 30, 2024
Residential	$	568.3	$	519.5	$	1,796.0	$	1,644.1
Commercial	257.6		282.7		781.8		864.9
Industrial	196.1		191.2		577.7		600.9
Consolidated net sales	$	1,022.0	$	993.4	$	3,155.5	$	3,109.9

Performance obligations

As of September 30, 2025, we had $102.4 million of remaining performance obligations on contracts with an original expected duration of one year or more. We expect to recognize the majority of our remaining performance obligations on these contracts within the next 12 to 18 months.

Contract assets and liabilities

Contract assets and liabilities consisted of the following:


In millions	September 30, 2025		December 31, 2024		$ Change		% Change
Contract assets	$	61.2	$	46.7	$	14.5	31.0	%
Contract liabilities	44.8		38.8		6.0		15.5	%
Net contract assets	$	16.4	$	7.9	$	8.5	107.6	%

The $8.5 million increase in net contract assets from December 31, 2024 to September 30, 2025 was primarily the result of timing of milestone payments. Approximately 90% of our contract liabilities at December 31, 2024 were recognized in revenue in the first nine months of 2025.

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/606/tableOfContent

+ Details

Restructuring and Transformation Program - Accrual Activity (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2025 USD ($)
Restructuring Reserve [Roll Forward]
Beginning balance	$ 18.7
Costs incurred	20.3
Cash payments and other	(26.1)
Ending balance	$ 12.9

Debt - Debt Outstanding Matures on Calendar Year Basis (Detail) $ in Millions	Sep. 30, 2025 USD ($)
Debt Disclosure [Abstract]
Q4 2025	$ 0.0
2026	0.0
2027	575.0
2028	0.0
2029	400.0
2030	220.0
Thereafter	400.0
Total debt	$ 1,595.0

Segment Information - Narrative (Details)	9 Months Ended
Segment Information - Narrative (Details)	Sep. 30, 2025 segment
Segment Reporting [Abstract]
Number of operating segments	3
Number of reportable segments	3

Income Taxes	9 Months Ended
Income Taxes	Sep. 30, 2025
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes We manage our affairs so that we are centrally managed and controlled in the United Kingdom (“U.K.”) and therefore have our tax residency in the U.K. The provision for income taxes consists of provisions for the U.K. and international income taxes. We operate in an international environment with operations in various locations outside the U.K. Accordingly, the consolidated income tax rate is a composite rate reflecting the earnings in the various locations and the applicable rates. The effective income tax rate for the nine months ended September 30, 2025 was 14.8%, compared to 14.1% for the nine months ended September 30, 2024. We continue to actively pursue initiatives to reduce our effective tax rate. The tax rate in any quarter can be affected positively or negatively by the mix of global earnings or adjustments that are required to be reported in the specific quarter of resolution. The total gross liability for uncertain tax positions was $6.5 million and $6.0 million at September 30, 2025 and December 31, 2024, respectively. We record penalties and interest related to unrecognized tax benefits in Provision for income taxes and Net interest expense, respectively, on the Condensed Consolidated Statements of Operations and Comprehensive Income, which is consistent with our past practices. The Organization for Economic Co-operation and Development Pillar Two Model Rules (“Pillar Two”) for a global 15.0% minimum tax have been adopted by a number of jurisdictions in which we operate. For the nine months ended September 30, 2025 and September 30, 2024, the impact of Pillar Two on our condensed consolidated financial statements was not material. On July 4, 2025, the U.S. enacted H.R.1 – One Big Beautiful Bill Act (the “Act”). The Act contains numerous income tax provisions, such as the permanent extension of certain expiring provisions of the Tax Cuts and Jobs Act and modifications to the international tax framework. The legislation has multiple effective dates, with certain provisions effective in 2025 and others implemented through 2027. For the nine months ended September 30, 2025, the impact of the Act on our condensed consolidated financial statements was not material.

- Definition

The entire disclosure for income tax.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
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+ Details

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended				9 Months Ended		12 Months Ended
	Sep. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Mar. 31, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Operating activities
Net income	$ 184.3	$ 154.9	$ 139.6	$ 133.3	$ 487.7	$ 459.0
Loss from discontinued operations, net of tax					0.0	0.2
Adjustments to reconcile net income from continuing operations to net cash provided by (used for) operating activities
Equity income of unconsolidated subsidiaries					(0.8)	(1.7)
Depreciation	15.3		14.9		44.7	45.3
Amortization	13.9		13.5		42.4	40.4
Deferred income taxes					20.8	3.6
Loss on sale of business	0.0		0.0		26.3	0.0
Share-based compensation	6.1		10.0		27.3	26.3
Asset impairment and write-offs					48.5	9.3
Changes in assets and liabilities, net of effects of business acquisitions
Accounts receivable					56.7	66.2
Inventories					(45.7)	30.1
Other current assets					(35.8)	5.0
Accounts payable					31.2	7.3
Employee compensation and benefits					(9.4)	(8.0)
Other current liabilities					60.8	(19.7)
Other non-current assets and liabilities					9.3	17.1
Net cash provided by operating activities of continuing operations					764.0	680.4
Net cash used for operating activities of discontinued operations					0.0	(0.2)
Net cash provided by operating activities					764.0	680.2
Investing activities
Capital expenditures					(45.1)	(51.7)
Purchase of investments					(18.0)	0.0
Proceeds from sale of property and equipment					0.1	0.4
Payments upon the settlement of net investment hedges					0.0	(16.4)
Acquisitions, net of cash acquired					(292.2)	0.0
Other					0.9	(0.5)
Net cash used for investing activities					(354.3)	(68.2)
Financing activities
Net repayments of short-term borrowings					(9.3)	0.0
Net borrowings of revolving long-term debt					210.5	0.0
Repayments of long-term debt					(269.3)	(362.5)
Debt issuance costs					(2.2)	0.0
Shares issued to employees, net of shares withheld					(2.2)	16.8
Repurchases of ordinary shares					(175.0)	(100.0)
Dividends paid					(123.3)	(114.3)
Net cash used for financing activities					(370.8)	(560.0)
Effect of exchange rate changes on cash and cash equivalents					(29.2)	(4.2)
Change in cash and cash equivalents					9.7	47.8
Cash and cash equivalents, beginning of period		$ 118.7		$ 170.3	118.7	170.3	$ 170.3
Cash and cash equivalents, end of period	$ 128.4		$ 218.1		$ 128.4	$ 218.1	$ 118.7

Earnings Per Share

9 Months Ended

Sep. 30, 2025

Earnings Per Share [Abstract]

Earnings Per Share

Basic and diluted earnings per share were calculated as follows:


	Three months ended				Nine months ended
In millions, except per-share data	September 30, 2025		September 30, 2024		September 30, 2025		September 30, 2024
Net income	$	184.3	$	139.6	$	487.7	$	459.0
Net income from continuing operations	$	184.3	$	139.6	$	487.7	$	459.2
Weighted average ordinary shares outstanding
Basic	163.8		165.6		164.4		165.7
Dilutive impact of stock options, restricted stock units and performance share units	1.3		1.4		1.3		1.5
Diluted	165.1		167.0		165.7		167.2
Earnings per ordinary share
Basic
Continuing operations	$	1.13	$	0.84	$	2.97	$	2.77
Discontinued operations	—		—		—		—
Basic earnings per ordinary share	$	1.13	$	0.84	$	2.97	$	2.77
Diluted
Continuing operations	$	1.12	$	0.84	$	2.94	$	2.75
Discontinued operations	—		—		—		—
Diluted earnings per ordinary share	$	1.12	$	0.84	$	2.94	$	2.75
Anti-dilutive stock options excluded from the calculation of diluted earnings per share	0.1		0.1		0.1		0.2

Condensed Consolidated Statements of Changes in Equity - USD ($) shares in Millions, $ in Millions	Total	Ordinary shares	Additional paid-in capital	Retained earnings	Accumulated other comprehensive (loss) income
Dividends (in dollars per share)	$ 0.23
Beginning Balance (in shares) at Dec. 31, 2023		165.3
Beginning Balance at Dec. 31, 2023	$ 3,217.1	$ 1.7	$ 1,593.6	$ 1,866.2	$ (244.4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	133.3			133.3
Other comprehensive loss, net of tax	1.0				1.0
Dividends declared	(38.2)			(38.2)
Exercise of options, net of shares tendered for payment (in shares)		0.4
Exercise of options, net of shares tendered for payment	15.2		15.2
Issuance of restricted shares, net of cancellations (in shares)		0.4
Issuance of restricted shares, net of cancellations	(4.0)		(4.0)
Shares surrendered by employees to pay taxes (in shares)		(0.1)
Shares surrendered by employees to pay taxes	(5.1)		(5.1)
Share-based compensation	7.9		7.9
Ending Balance (in shares) at Mar. 31, 2024		166.0
Ending Balance at Mar. 31, 2024	3,327.2	$ 1.7	1,607.6	1,961.3	(243.4)
Beginning Balance (in shares) at Dec. 31, 2023		165.3
Beginning Balance at Dec. 31, 2023	3,217.1	$ 1.7	1,593.6	1,866.2	(244.4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	459.0
Ending Balance (in shares) at Sep. 30, 2024		165.2
Ending Balance at Sep. 30, 2024	$ 3,498.8	$ 1.7	1,536.7	2,210.9	(250.5)
Dividends (in dollars per share)	$ 0.23
Beginning Balance (in shares) at Mar. 31, 2024		166.0
Beginning Balance at Mar. 31, 2024	$ 3,327.2	$ 1.7	1,607.6	1,961.3	(243.4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	186.1			186.1
Other comprehensive loss, net of tax	(3.9)				(3.9)
Dividends declared	(38.1)			(38.1)
Share repurchase (in shares)		(0.6)
Share repurchases	(50.0)		(50.0)
Exercise of options, net of shares tendered for payment (in shares)		0.1
Exercise of options, net of shares tendered for payment	3.7		3.7
Shares surrendered by employees to pay taxes	(0.5)		(0.5)
Share-based compensation	8.4		8.4
Ending Balance (in shares) at Jun. 30, 2024		165.5
Ending Balance at Jun. 30, 2024	$ 3,432.9	$ 1.7	1,569.2	2,109.3	(247.3)
Dividends (in dollars per share)	$ 0.23
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 139.6			139.6
Other comprehensive loss, net of tax	(3.2)				(3.2)
Dividends declared	(38.0)			(38.0)
Share repurchase (in shares)		(0.6)
Share repurchases	(50.0)		(50.0)
Exercise of options, net of shares tendered for payment (in shares)		0.3
Exercise of options, net of shares tendered for payment	8.0		8.0
Shares surrendered by employees to pay taxes	(0.5)		(0.5)
Share-based compensation	10.0		10.0
Ending Balance (in shares) at Sep. 30, 2024		165.2
Ending Balance at Sep. 30, 2024	$ 3,498.8	$ 1.7	1,536.7	2,210.9	(250.5)
Dividends (in dollars per share)	$ 0.25
Beginning Balance (in shares) at Dec. 31, 2024		164.8
Beginning Balance at Dec. 31, 2024	$ 3,562.9	$ 1.7	1,501.7	2,336.1	(276.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	154.9			154.9
Other comprehensive loss, net of tax	3.0				3.0
Dividends declared	(41.2)			(41.2)
Share repurchase (in shares)		(0.6)
Share repurchases	(50.0)		(50.0)
Exercise of options, net of shares tendered for payment	0.6		0.6
Issuance of restricted shares, net of cancellations (in shares)		0.4
Issuance of restricted shares, net of cancellations	0.0
Shares surrendered by employees to pay taxes (in shares)		(0.1)
Shares surrendered by employees to pay taxes	(9.2)		(9.2)
Share-based compensation	12.6		12.6
Ending Balance (in shares) at Mar. 31, 2025		164.5
Ending Balance at Mar. 31, 2025	3,633.6	$ 1.7	1,455.7	2,449.8	(273.6)
Beginning Balance (in shares) at Dec. 31, 2024		164.8
Beginning Balance at Dec. 31, 2024	3,562.9	$ 1.7	1,501.7	2,336.1	(276.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	487.7
Share repurchases	(175.0)
Ending Balance (in shares) at Sep. 30, 2025		163.6
Ending Balance at Sep. 30, 2025	$ 3,782.4	$ 1.7	1,351.8	2,700.6	(271.7)
Dividends (in dollars per share)	$ 0.25
Beginning Balance (in shares) at Mar. 31, 2025		164.5
Beginning Balance at Mar. 31, 2025	$ 3,633.6	$ 1.7	1,455.7	2,449.8	(273.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	148.5			148.5
Other comprehensive loss, net of tax	(0.5)				(0.5)
Dividends declared	(41.0)			(41.0)
Share repurchase (in shares)		(0.7)
Share repurchases	(75.0)		(75.0)
Exercise of options, net of shares tendered for payment (in shares)		0.2
Exercise of options, net of shares tendered for payment	(1.7)		(1.7)
Issuance of restricted shares, net of cancellations (in shares)		(0.1)
Issuance of restricted shares, net of cancellations	0.0
Shares surrendered by employees to pay taxes	(0.3)		(0.3)
Share-based compensation	8.6		8.6
Ending Balance (in shares) at Jun. 30, 2025		163.9
Ending Balance at Jun. 30, 2025	$ 3,672.2	$ 1.7	1,387.3	2,557.3	(274.1)
Dividends (in dollars per share)	$ 0.25
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 184.3			184.3
Other comprehensive loss, net of tax	2.4				2.4
Dividends declared	(41.0)			(41.0)
Share repurchase (in shares)		(0.5)
Share repurchases	(50.0)		(50.0)
Exercise of options, net of shares tendered for payment (in shares)		0.2
Exercise of options, net of shares tendered for payment	8.4		8.4
Share-based compensation	6.1		6.1
Ending Balance (in shares) at Sep. 30, 2025		163.6
Ending Balance at Sep. 30, 2025	$ 3,782.4	$ 1.7	$ 1,351.8	$ 2,700.6	$ (271.7)

Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2025

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs

Components of net periodic benefit expense for our pension plans for the three and nine months ended September 30, 2025 and 2024 were as follows:


	Three months ended				Nine months ended
In millions	September 30, 2025		September 30, 2024		September 30, 2025		September 30, 2024
Service cost	$	0.3	$	0.4	$	0.9	$	1.2
Interest cost	1.0		1.0		3.0		3.0
Expected return on plan assets	(0.2)		(0.1)		(0.6)		(0.3)

Net periodic benefit expense	$	1.1	$	1.3	$	3.3	$	3.9

Derivatives and Financial Instruments - Assets and Liabilities Measured at Fair Value (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024	Dec. 02, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contract liabilities	$ (88.3)		$ (88.3)		$ (16.3)
Contingent earn-out liabilities						$ (8.0)
Impairment of intangible assets	0.0	$ 0.0	30.9	$ 0.0
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contract assets	0.1		0.1		2.5
Foreign currency contract liabilities	(88.2)		(88.2)		(16.3)
Deferred compensation plan	31.4		31.4		29.4
Contingent earn-out liabilities	(8.0)		(8.0)		(8.0)
Total recurring fair value measurements	(64.8)		(64.8)		9.5
Recurring \| Interest Rate Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate contract assets					1.9
Interest rate contract liabilities	(0.1)		(0.1)
Level 1 \| Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contract assets	0.0		0.0		0.0
Foreign currency contract liabilities	0.0		0.0		0.0
Deferred compensation plan	14.7		14.7		15.0
Contingent earn-out liabilities	0.0		0.0		0.0
Total recurring fair value measurements	14.7		14.7		15.0
Level 1 \| Recurring \| Interest Rate Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate contract assets					0.0
Interest rate contract liabilities	0.0		0.0
Level 2 \| Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contract assets	0.1		0.1		2.5
Foreign currency contract liabilities	(88.2)		(88.2)		(16.3)
Deferred compensation plan	0.0		0.0		0.0
Contingent earn-out liabilities	0.0		0.0		0.0
Total recurring fair value measurements	(88.2)		(88.2)		(11.9)
Level 2 \| Recurring \| Interest Rate Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate contract assets					1.9
Interest rate contract liabilities	(0.1)		(0.1)
Level 3 \| Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contract assets	0.0		0.0		0.0
Foreign currency contract liabilities	0.0		0.0		0.0
Deferred compensation plan	0.0		0.0		0.0
Contingent earn-out liabilities	(8.0)		(8.0)		(8.0)
Total recurring fair value measurements	(8.0)		(8.0)		(8.0)
Level 3 \| Recurring \| Interest Rate Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate contract assets					0.0
Interest rate contract liabilities	0.0		0.0
NAV \| Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contract assets	0.0		0.0		0.0
Foreign currency contract liabilities	0.0		0.0		0.0
Deferred compensation plan	16.7		16.7		14.4
Contingent earn-out liabilities	0.0		0.0		0.0
Total recurring fair value measurements	16.7		16.7		14.4
NAV \| Recurring \| Interest Rate Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate contract assets					$ 0.0
Interest rate contract liabilities	$ 0.0		$ 0.0

Share Plans - Additional Information (Detail) - Two Thousand Twenty Share and Incentive Plan shares in Millions	3 Months Ended
	Sep. 30, 2025 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued (in shares)	0.4
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted (in shares)	0.2
Weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 93.69
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	0.1
Weighted-average grant date fair value of options (in dollars per share) \| $ / shares	$ 36.73
Performance share units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted (in shares)	0.1
Weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 99.16

Goodwill and Other Identifiable Intangible Assets - Changes in Carrying Amount of Goodwill by Segment (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2025 USD ($)
Goodwill [Roll Forward]
Beginning Balance	$ 3,286.6
Acquisitions	166.6
Foreign currency translation/other	75.6
Ending Balance	3,528.8
Flow
Goodwill [Roll Forward]
Beginning Balance	730.4
Acquisitions	166.6
Foreign currency translation/other	62.1
Ending Balance	959.1
Water Solutions
Goodwill [Roll Forward]
Beginning Balance	1,392.7
Acquisitions	0.0
Foreign currency translation/other	13.5
Ending Balance	1,406.2
Pool
Goodwill [Roll Forward]
Beginning Balance	1,163.5
Acquisitions	0.0
Foreign currency translation/other	0.0
Ending Balance	$ 1,163.5

- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 24
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-URI https://asc.fasb.org/1943274/2147482548/350-20-55-24

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Reference 4: http://www.xbrl.org/2003/role/exampleRef
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
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Reference 14: http://www.xbrl.org/2009/role/commonPracticeRef
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-Publisher FASB
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+ Details

Revenue - Additional Information (Details) $ in Millions	9 Months Ended
Revenue - Additional Information (Details) $ in Millions	Sep. 30, 2025 USD ($)
Revenue from Contract with Customer [Abstract]
Change in net contract (liabilities) assets	$ 8.5
Percent of contract liabilities	90.00%

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Millions, $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Statement of Financial Position [Abstract]
Accounts and notes receivable, allowances	$ 6.7	$ 9.1
Ordinary shares, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock authorized (in shares)	426.0	426.0
Common shares issued (in shares)	163.6	164.8

Debt - Debt and Average Interest Rates on Debt Outstanding (Detail) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Current maturities of short-term borrowings	$ 0.0	$ 9.3
Unamortized debt issuance costs and discounts	(14.9)	(15.1)
Total debt	1,580.1	1,648.0
Long-term debt	$ 1,580.1	1,638.7
Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Average interest rate as of September 30, 2025	5.268%
Debt, gross	$ 220.0	9.5
Term Loans \| 5-year Term Loan Facility
Debt Instrument [Line Items]
Average interest rate as of September 30, 2025	5.502%
Debt, gross	$ 575.0	825.0
Senior Notes \| Senior Notes 4.650% Due 2025
Debt Instrument [Line Items]
Debt, gross	$ 0.0	19.3
Senior Notes \| Senior Notes 4.500% Due 2029
Debt Instrument [Line Items]
Average interest rate as of September 30, 2025	4.50%
Debt, gross	$ 400.0	400.0
Senior Notes \| Senior Notes 5.900%
Debt Instrument [Line Items]
Average interest rate as of September 30, 2025	5.90%
Debt, gross	$ 400.0	$ 400.0

Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Income Statement [Abstract]
Net sales	$ 1,022.0	$ 993.4	$ 3,155.5	$ 3,109.9
Cost of goods sold	603.4	600.2	1,877.0	1,888.7
Gross profit	418.6	393.2	1,278.5	1,221.2
Selling, general and administrative expenses	162.2	190.4	552.6	540.7
Research and development expenses	24.7	22.9	73.4	71.8
Operating income	231.7	179.9	652.5	608.7
Other expense (income)
Loss on sale of business	0.0	0.0	26.3	0.0
Net interest expense	14.4	19.8	52.0	73.4
Other expense (income)	0.6	(0.1)	2.1	0.8
Income from continuing operations before income taxes	216.7	160.2	572.1	534.5
Provision for income taxes	32.4	20.6	84.4	75.3
Net income from continuing operations	184.3	139.6	487.7	459.2
Loss from discontinued operations, net of tax	0.0	0.0	0.0	(0.2)
Net income	184.3	139.6	487.7	459.0
Comprehensive income, net of tax
Net income	184.3	139.6	487.7	459.0
Changes in cumulative translation adjustment	(3.7)	32.3	81.0	0.5
Changes in market value of derivative financial instruments, net of tax	6.1	(35.5)	(76.1)	(6.6)
Comprehensive income	$ 186.7	$ 136.4	$ 492.6	$ 452.9
Basic
Continuing operations (in dollars per share)	$ 1.13	$ 0.84	$ 2.97	$ 2.77
Discontinued operations (in dollars per share)	0	0	0	0
Basic earnings per ordinary share (in dollars per share)	1.13	0.84	2.97	2.77
Diluted
Continuing operations (in dollars per share)	1.12	0.84	2.94	2.75
Discontinued operations (in dollars per share)	0	0	0	0
Diluted earnings per ordinary share (in dollars per share)	$ 1.12	$ 0.84	$ 2.94	$ 2.75
Weighted average ordinary shares outstanding
Basic (shares)	163.8	165.6	164.4	165.7
Diluted (shares)	165.1	167.0	165.7	167.2

Segment Information - Financial Information By Reportable Segment (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Segment Reporting Information [Line Items]
Identifiable assets	$ 6,759.6		$ 6,759.6		$ 6,446.5
Capital expenditures	17.4	$ 15.4	45.1	$ 51.7
Depreciation	15.3	14.9	44.7	45.3
Operating Segments
Segment Reporting Information [Line Items]
Identifiable assets	6,329.6		6,329.6		6,005.5
Capital expenditures	16.9	12.0	39.7	42.3
Depreciation	13.2	13.0	38.3	38.9
Corporate and other
Segment Reporting Information [Line Items]
Identifiable assets	430.0		430.0		441.0
Capital expenditures	0.5	3.4	5.4	9.4
Depreciation	2.1	1.9	6.4	6.4
Flow \| Operating Segments
Segment Reporting Information [Line Items]
Identifiable assets	2,005.3		2,005.3		1,590.7
Capital expenditures	4.9	4.4	11.8	11.6
Depreciation	5.2	5.4	15.6	16.2
Water Solutions \| Operating Segments
Segment Reporting Information [Line Items]
Identifiable assets	2,574.5		2,574.5		2,613.5
Capital expenditures	4.0	3.7	9.7	18.6
Depreciation	3.9	4.1	11.9	12.9
Pool \| Operating Segments
Segment Reporting Information [Line Items]
Identifiable assets	1,749.8		1,749.8		$ 1,801.3
Capital expenditures	8.0	3.9	18.2	12.1
Depreciation	$ 4.1	$ 3.5	$ 10.8	$ 9.8

- Definition

Amount of asset recognized for present right to economic benefit.

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-Section S99
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+ Details

Segment Information (Tables)

9 Months Ended

Sep. 30, 2025

Segment Reporting [Abstract]

Financial Information by Reportable Business Segment

Financial information by reportable segment as well as a reconciliation of reportable segment income to consolidated income from continuing operations before income taxes is as follows:


	September 30, 2025		December 31, 2024
In millions	Identifiable assets (1)
Flow	$	2,005.3	$	1,590.7
Water Solutions	2,574.5		2,613.5
Pool	1,749.8		1,801.3
Reportable segment total	6,329.6		6,005.5
Corporate and other	430.0		441.0
Consolidated	$	6,759.6	$	6,446.5

(1) All cash and cash equivalents are included in “Corporate and other.”


	Three months ended				Nine months ended
	September 30, 2025		September 30, 2024		September 30, 2025		September 30, 2024
In millions	Capital expenditures
Flow	$	4.9	$	4.4	$	11.8	$	11.6
Water Solutions	4.0		3.7		9.7		18.6
Pool	8.0		3.9		18.2		12.1
Reportable segment total	16.9		12.0		39.7		42.3
Corporate and other	0.5		3.4		5.4		9.4
Consolidated	$	17.4	$	15.4	$	45.1	$	51.7


	Three months ended				Nine months ended
	September 30, 2025		September 30, 2024		September 30, 2025		September 30, 2024
In millions	Depreciation
Flow	$	5.2	$	5.4	$	15.6	$	16.2
Water Solutions	3.9		4.1		11.9		12.9
Pool	4.1		3.5		10.8		9.8
Reportable segment total	13.2		13.0		38.3		38.9
Corporate and other	2.1		1.9		6.4		6.4
Consolidated	$	15.3	$	14.9	$	44.7	$	45.3

Reconciliation of Operating Profit (Loss) from Segments to Consolidated


Three months ended September 30, 2025

In millions	Flow		Water Solutions		Pool		Total
Net sales	$	394.0	$	273.3	$	354.3	$	1,021.6
Reconciliation of consolidated net sales
Corporate and other							0.4
Total consolidated net sales							$	1,022.0

Cost of goods sold (1)(3)	(240.7)		(165.9)		(195.5)
Operating expenses (1)(2)(3)	(58.0)		(39.0)		(42.6)
Reportable segment income	$	95.3	$	68.4	$	116.2	$	279.9
Corporate and other							(17.3)
Restructuring and other							(0.2)
Transformation costs							(10.8)


Asset impairment and write-offs							(1.5)




Deal-related costs and expenses							(4.1)


Intangible amortization							(13.9)
Interest expense, net							(14.4)
Other expense							(1.0)
Income from continuing operations before income taxes							$	216.7


Three months ended September 30, 2024

In millions	Flow		Water Solutions		Pool		Total
Net sales	$	372.2	$	289.5	$	331.4	$	993.1
Reconciliation of consolidated net sales
Corporate and other							0.3
Total consolidated net sales							$	993.4

Cost of goods sold (1)(3)	(235.0)		(180.8)		(181.4)
Operating expenses (1)(2)(3)	(54.4)		(44.3)		(37.3)
Reportable segment income	$	82.8	$	64.4	$	112.7	$	259.9
Corporate and other							(20.7)
Restructuring and other							(23.4)
Transformation costs							(12.6)


Asset impairment and write-offs							(8.5)
Legal accrual adjustments and settlements							(0.7)
Intangible amortization							(13.5)
Interest expense, net							(19.8)
Other expense							(0.5)
Income from continuing operations before income taxes							$	160.2


Nine months ended September 30, 2025

In millions	Flow		Water Solutions		Pool		Total
Net sales	$	1,159.2	$	829.8	$	1,165.4	$	3,154.4
Reconciliation of consolidated net sales
Corporate and other							1.1
Total consolidated net sales							$	3,155.5

Cost of goods sold (1)(3)	(715.8)		(507.5)		(638.3)
Operating expenses (1)(2)(3)	(171.4)		(123.0)		(132.2)
Reportable segment income	$	272.0	$	199.3	$	394.9	$	866.2
Corporate and other							(64.4)
Restructuring and other							(21.1)
Transformation costs							(32.4)


Asset impairment and write-offs							(48.5)
Loss on sale of business							(26.3)



Deal-related costs and expenses							(4.1)


Intangible amortization							(42.4)
Interest expense, net							(52.0)
Other expense							(2.9)
Income from continuing operations before income taxes							$	572.1


Nine months ended September 30, 2024

In millions	Flow		Water Solutions		Pool		Total
Net sales	$	1,153.3	$	873.1	$	1,082.4	$	3,108.8
Reconciliation of consolidated net sales
Corporate and other							1.1
Total consolidated net sales							$	3,109.9

Cost of goods sold (1)(3)	(732.1)		(547.1)		(604.4)
Operating expenses (1)(2)(3)	(176.7)		(133.1)		(120.9)
Reportable segment income	$	244.5	$	192.9	$	357.1	$	794.5
Corporate and other							(66.6)
Restructuring and other							(33.9)
Transformation costs							(41.4)


Asset impairment and write-offs							(9.3)
Legal accrual adjustments and settlements							7.5
Intangible amortization							(40.4)
Interest expense, net							(73.4)
Other expense							(2.5)
Income from continuing operations before income taxes							$	534.5

(1) The significant expense categories and amounts align with the segment-level information that is regularly provided to the chief operating decision maker which includes certain corporate overhead allocations directly attributable to each of the segments.

(2) Operating expenses include selling, general, administrative, research and development costs which primarily consist of non-manufacturing employee compensation, non-manufacturing overhead and professional service costs as well as depreciation expense.

(3) These costs exclude certain expenses reported in the Condensed Consolidated Statements of Operations and Comprehensive Income, including costs that are reflected in "Corporate and other,” and expenses excluded from reportable segment income as defined above.

Revenue - Performance Obligations (Details) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-10-01 $ in Millions	Sep. 30, 2025 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation	$ 102.4
Minimum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation period	12 months
Maximum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation period	18 months

Commitments and Contingencies - Changes in Carrying Amount of Service and Product Warranties (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2025 USD ($)
Movement in Standard Product Warranty Accrual [Roll Forward]
Beginning balance	$ 67.2
Service and product warranty provision	34.4
Payments	(33.3)
Foreign currency translation	0.8
Ending balance	$ 69.1

Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2025

Earnings Per Share [Abstract]

Basic and Diluted Earnings Per Share

Basic and diluted earnings per share were calculated as follows:


	Three months ended				Nine months ended
In millions, except per-share data	September 30, 2025		September 30, 2024		September 30, 2025		September 30, 2024
Net income	$	184.3	$	139.6	$	487.7	$	459.0
Net income from continuing operations	$	184.3	$	139.6	$	487.7	$	459.2
Weighted average ordinary shares outstanding
Basic	163.8		165.6		164.4		165.7
Dilutive impact of stock options, restricted stock units and performance share units	1.3		1.4		1.3		1.5
Diluted	165.1		167.0		165.7		167.2
Earnings per ordinary share
Basic
Continuing operations	$	1.13	$	0.84	$	2.97	$	2.77
Discontinued operations	—		—		—		—
Basic earnings per ordinary share	$	1.13	$	0.84	$	2.97	$	2.77
Diluted
Continuing operations	$	1.12	$	0.84	$	2.94	$	2.75
Discontinued operations	—		—		—		—
Diluted earnings per ordinary share	$	1.12	$	0.84	$	2.94	$	2.75
Anti-dilutive stock options excluded from the calculation of diluted earnings per share	0.1		0.1		0.1		0.2

Insider Trading Arrangements

3 Months Ended

Sep. 30, 2025

Trading Arrangements, by Individual

Non-Rule 10b5-1 Arrangement Adopted

false

Rule 10b5-1 Arrangement Terminated

false

Non-Rule 10b5-1 Arrangement Terminated

false

Phil M. Rolchigo [Member]

Trading Arrangements, by Individual

Material Terms of Trading Arrangement

(a)

(b)

Name and Title

Action Taken

Date

Type of Trading Arrangement

Duration of Trading Arrangement

Aggregate Number of Shares to be Sold

Philip M. Rolchigo, Ph.D., EVP and Chief Technology Officer

Adoption

08/04/2025

Rule 10b5-1 trading arrangement

02/27/2026

Up to 6,493 shares issuable upon the exercise of options to acquire shares pursuant to the trading arrangement

(a) Each trading arrangement marked as a Rule 10b5-1 trading arrangement is intended to satisfy the affirmative defense of Rule 10b5-1(c).

(b) Each trading arrangement permits transactions through and including the earlier to occur of the completion of all sales under the trading arrangement or the date listed in the table.

Name

Philip M. Rolchigo

Title

Ph.D., EVP and Chief Technology Officer

Rule 10b5-1 Arrangement Adopted

true

08/04/2025

02/27/2026

207 days

6,493

Derivatives and Financial Instruments

9 Months Ended

Sep. 30, 2025

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives and Financial Instruments

Derivative financial instruments

We are exposed to market risk related to changes in foreign currency exchange rates and interest rates on our variable rate indebtedness. To manage the volatility related to these exposures, we periodically enter into a variety of derivative financial instruments. Our objective is to reduce, where it is deemed appropriate to do so, fluctuations in earnings and cash flows associated with changes in foreign currency exchange rates or variable interest rates. The derivative contracts contain credit risk to the extent that our bank counterparties may be unable to meet the terms of the agreements. The amount of such credit risk is generally limited to the unrealized gains, if any, in such contracts. Such risk is minimized by limiting those counterparties to major financial institutions of high credit quality.

Foreign currency contracts

We conduct business in various locations throughout the world and are subject to market risk due to changes in the value of foreign currencies in relation to our reporting currency, the U.S. dollar. We manage our economic and transaction exposure to certain market-based risks through the use of foreign currency derivative financial instruments. Our objective in holding these derivatives is to reduce the volatility of net earnings and cash flows associated with changes in foreign currency exchange rates. The majority of our foreign currency contracts have an original maturity date of less than one year.

At September 30, 2025, we had outstanding foreign currency derivative contracts with gross notional U.S. dollar equivalent amounts of $51.8 million. At December 31, 2024, there were no outstanding foreign currency derivative contracts. The impact of these contracts on the Condensed Consolidated Statements of Operations and Comprehensive Income was not material for any period presented.

Cross currency swaps

At September 30, 2025 and December 31, 2024, we had outstanding cross currency swap agreements with a combined notional amount of $816.6 million and $728.5 million, respectively. The agreements are accounted for as either cash flow hedges, to hedge foreign currency fluctuations on certain intercompany debt, or as net investment hedges to manage our exposure to fluctuations in the Euro-U.S. Dollar exchange rate. We had deferred foreign currency losses of $87.9 million and $13.8 million at September 30, 2025 and December 31, 2024, respectively, recorded in Accumulated other comprehensive loss associated with our cross currency swap activity. The periodic interest settlements related to our cross currency swap agreements are classified as operating activities. The cash flows that relate to principal balances are classified as financing activities for the cash flow hedges on intercompany debt and investing activities for the net investment hedges.

On October 3, 2025, we entered into a new cross currency swap agreement with a notional amount of €212 million, designated as a cash flow hedge, which will hedge the cash flows related to foreign currency exchange rate fluctuations on intercompany debt.

Hedging of variable interest rates

We manage our exposure to certain interest rate risks related to our variable-rate debt through the use of interest rate swaps and collars. We enter into these agreements to hedge the variability of interest expense and cash flows attributable to changes in interest rates of our variable-rate debt. As of September 30, 2025, we had an aggregate notional amount of $300.0 million and $200.0 million in interest rate swaps and collars, respectively, that are designated as cash flow hedges.

Unrealized gains and losses related to the fair value of the interest rate swaps are recorded in Accumulated other comprehensive loss on our Condensed Consolidated Balance Sheets. We had an unrealized loss of $0.1 million at September 30, 2025 and an unrealized gain of $1.9 million at December 31, 2024, recorded in Accumulated other comprehensive loss associated with our interest rate swap and collar activity. The periodic interest settlements related to our interest rate swaps and collars are classified as operating activities.

Fair value measurements

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Assets and liabilities measured at fair value are classified using the following hierarchy, which is based upon the transparency of inputs to the valuation as of the measurement date:


Level 1:						Valuation is based on observable inputs such as quoted market prices (unadjusted) for identical assets or liabilities in active markets.

Level 2:						Valuation is based on inputs such as quoted market prices for similar assets or liabilities in active markets or other inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument.

Level 3:						Valuation is based upon other unobservable inputs that are significant to the fair value measurement.

In making fair value measurements, observable market data must be used when available. When inputs used to measure fair value fall within different levels of the hierarchy, the level within which the fair value measurement is categorized is based on the lowest level input that is significant to the fair value measurement.

Fair value of financial instruments

The following methods were used to estimate the fair values of each class of financial instrument:

•short-term financial instruments (cash and cash equivalents, accounts and notes receivable, accounts payable and variable-rate debt) — recorded amount approximates fair value because of the short maturity period;

•long-term fixed-rate debt, including current maturities — fair value is based on market quotes available for issuance of debt with similar terms, which are inputs that are classified as Level 2 in the valuation hierarchy defined above;

•foreign currency contracts, interest rate swap and collar agreements — fair values are determined through the use of models that consider various assumptions, including time value, yield curves, as well as other relevant economic measures, which are inputs that are classified as Level 2 in the valuation hierarchy defined above;

•deferred compensation plan assets (mutual funds, common/collective trusts and cash equivalents for payment of certain non-qualified benefits for retired, terminated and active employees) — fair value of mutual funds and cash equivalents are based on quoted market prices in active markets that are classified as Level 1 in the valuation hierarchy defined above; fair value of common/collective trusts are valued at net asset value (“NAV”), which is based on the fair value of the underlying securities owned by the fund and divided by the number of shares outstanding; and

•contingent earn-out liabilities — fair value is generally established using a probability-weighted discounted income approach to convert future estimated cash flows to a single present value amount. The related inputs are classified as Level 3 in the valuation hierarchy defined above.

The recorded amounts and estimated fair values of total debt, excluding unamortized issuance costs and discounts, were as follows:


	September 30, 2025				December 31, 2024
In millions	Recorded Amount		Fair Value		Recorded Amount		Fair Value
Variable rate debt	$	795.0	$	795.0	$	843.8	$	843.8
Fixed rate debt	800.0		826.4		819.3		814.3
Total debt	$	1,595.0	$	1,621.4	$	1,663.1	$	1,658.1

Financial assets and liabilities measured at fair value on a recurring and nonrecurring basis were as follows:


	September 30, 2025
In millions	Level 1		Level 2		Level 3		NAV		Total
Recurring fair value measurements

Interest rate contract liabilities	$	—	$	(0.1)	$	—	$	—	$	(0.1)
Foreign currency contract assets	—		0.1		—		—		0.1
Foreign currency contract liabilities	—		(88.2)		—		—		(88.2)


Deferred compensation plan assets	14.7		—		—		16.7		31.4
Contingent earn-out liabilities	—		—		(8.0)		—		(8.0)
Total recurring fair value measurements	$	14.7	$	(88.2)	$	(8.0)	$	16.7	$	(64.8)
Nonrecurring fair value measurements (1)

(1) During the nine months ended September 30, 2025, we recorded an impairment charge on a definite-lived customer relationship intangible asset of $30.9 million. We determined the value using unobservable inputs and wrote the balance of the definite-lived intangible asset to zero. The impairment charge was recorded in Selling, general and administrative expenses in the Condensed Consolidated Statements of Operations and Comprehensive Income.


	December 31, 2024
In millions	Level 1		Level 2		Level 3		NAV		Total
Recurring fair value measurements
Interest rate contract assets	$	—	$	1.9	$	—	$	—	$	1.9
Foreign currency contract assets	—		2.5		—		—		2.5
Foreign currency contract liabilities	—		(16.3)		—		—		(16.3)
Deferred compensation plan assets	15.0		—		—		14.4		29.4
Contingent earn-out liabilities	—		—		(8.0)		—		(8.0)
Total recurring fair value measurements	$	15.0	$	(11.9)	$	(8.0)	$	14.4	$	9.5

On December 2, 2024, we completed the acquisition of G & F Manufacturing, LLC (“G & F Manufacturing”). In conjunction with the acquisition, we recorded an estimated fair value of $8.0 million of contingent earn-out liabilities, which are considered Level 3 under our fair value hierarchy. The recorded fair value of the associated contingent earn-out liabilities was reviewed as of September 30, 2025, with no further change in fair value. The fair value of the contingent earn-out liabilities will be re-measured for each reporting period until resolution of the contingent earn-out payments, and any resulting changes to fair value would be recorded in earnings.

- Definition

The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts.

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+ Details

Restructuring and Transformation Program - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2025 Person
Restructuring and Related Activities [Abstract]
Number of employees	230

Restructuring and Transformation Program - Costs Included in Selling, General & Administrative Expenses (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 1.1	$ 28.3	$ 26.3	$ 38.6
Transformation costs	11.5	15.4	48.6	44.2
Total restructuring and transformation costs	12.6	43.7	74.9	82.8
Severance and related costs
Restructuring Cost and Reserve [Line Items]
Transformation costs	0.0	0.0	0.0	0.7
Asset impairment and write-offs
Restructuring Cost and Reserve [Line Items]
Transformation costs	0.7	2.8	16.2	2.8
Other transformation costs
Restructuring Cost and Reserve [Line Items]
Transformation costs	10.8	12.6	32.4	40.7
Severance and related costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs	0.0	17.4	20.3	26.8
Other restructuring costs and related adjustments
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 1.1	$ 10.9	$ 6.0	$ 11.8

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References + Details

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References + Details

Shareholders' Equity	9 Months Ended
Shareholders' Equity	Sep. 30, 2025
Equity [Abstract]
Shareholders' Equity	Shareholders’ Equity Share repurchases In December 2020, the Board of Directors authorized the repurchase of our ordinary shares up to a maximum dollar limit of $750.0 million. The authorization expires on December 31, 2025. During the nine months ended September 30, 2025, we repurchased 1.8 million of our ordinary shares for $175.0 million. As of September 30, 2025, we had $275.0 million available for share repurchases under this authorization. Dividends payable On September 22, 2025, the Board of Directors declared a quarterly cash dividend of $0.25 per share, payable on November 7, 2025 to shareholders of record at the close of business on October 24, 2025. As a result, the balance of dividends payable included in Other current liabilities on our Condensed Consolidated Balance Sheets was $41.0 million at September 30, 2025, compared to $41.2 million at December 31, 2024.

- Definition

The entire disclosure for equity.

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+ Details

Supplemental Balance Sheet Information (Detail) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Inventories
Raw materials and supplies	$ 320.4	$ 315.8
Work-in-process	89.9	88.4
Finished goods	229.4	206.7
Total inventories	639.7	610.9
Other current assets
Cost in excess of billings	61.2	46.7
Prepaid expenses	79.8	51.0
Other current assets	14.4	43.6
Total other current assets	155.4	141.3
Property, plant and equipment, net
Land and land improvements	33.0	31.3
Buildings and leasehold improvements	237.1	217.9
Machinery and equipment	709.6	675.8
Capitalized software	99.1	92.2
Construction in progress	43.6	51.1
Total property, plant and equipment	1,122.4	1,068.3
Accumulated depreciation and amortization	755.3	709.5
Total property, plant and equipment, net	367.1	358.8
Other non-current assets
Right-of-use lease assets	108.1	116.1
Deferred income taxes	130.2	129.6
Deferred compensation plan assets	31.4	29.4
Other non-current assets	60.9	56.1
Total other non-current assets	330.6	331.2
Other current liabilities
Dividends payable	41.0	41.2
Accrued warranty	69.1	67.2
Accrued rebates and incentives	202.2	176.7
Accrued freight	15.3	18.4
Billings in excess of cost	37.9	33.8
Current lease liability	26.1	26.3
Income taxes payable	38.6	28.8
Accrued restructuring	12.9	18.7
Interest payable	11.6	5.5
Other current liabilities	112.8	80.2
Total other current liabilities	567.5	496.8
Other non-current liabilities
Long-term lease liability	86.7	92.8
Income taxes payable	6.2	8.1
Self-insurance liabilities	59.1	55.6
Deferred compensation plan liabilities	31.4	29.4
Foreign currency and interest rate contract liabilities	88.3	16.3
Other non-current liabilities	39.4	41.6
Total other non-current liabilities	$ 311.1	$ 243.8

Accounts Receivable

9 Months Ended

Sep. 30, 2025

Receivables [Abstract]

Accounts Receivable

All trade receivables are reported on our Condensed Consolidated Balance Sheets at the outstanding principal amount adjusted for any allowance for credit losses and write-offs, net of recoveries. We record an allowance for credit losses, reducing our receivables balance to an amount we estimate is collectible from our customers. Estimates used in determining the allowance for credit losses are based on current trends, aging of accounts receivable, periodic credit evaluations of our customers’ financial condition, and historical collection experience as well as reasonable and supportable forecasts of future economic conditions. Write-offs are recorded at the time all collection efforts have been exhausted. We generally do not require collateral. We review our allowance for credit losses on a quarterly basis.

Activity related to our allowance for credit losses is summarized as follows for the nine months ended September 30, 2025:


In millions	September 30, 2025
Beginning balance	$	9.1
Bad debt benefit	(1.9)

Write-offs, net of recoveries	(0.7)
Other (1)	0.2
Ending balance	$	6.7
(1) Other amounts are primarily the effects of changes in currency translation and the impact of allowance for credits.

Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Earnings Per Share [Abstract]
Net income	$ 184.3	$ 139.6	$ 487.7	$ 459.0
Net income from continuing operations	$ 184.3	$ 139.6	$ 487.7	$ 459.2
Weighted average common shares outstanding
Basic (shares)	163.8	165.6	164.4	165.7
Dilutive impact of stock options, restricted stock units and performance share units	1.3	1.4	1.3	1.5
Diluted (shares)	165.1	167.0	165.7	167.2
Basic
Continuing operations (in dollars per share)	$ 1.13	$ 0.84	$ 2.97	$ 2.77
Discontinued operations (in dollars per share)	0	0	0	0
Basic earnings (loss) per ordinary share (in dollars per share)	1.13	0.84	2.97	2.77
Diluted
Continuing operations (in dollars per share)	1.12	0.84	2.94	2.75
Discontinued operations (in dollars per share)	0	0	0	0
Diluted earnings (loss) per ordinary share (in dollars per share)	$ 1.12	$ 0.84	$ 2.94	$ 2.75
Anti-dilutive stock options excluded from the calculation of diluted earnings per share (in shares)	0.1	0.1	0.1	0.2

Acquisitions (Details) - USD ($) $ in Millions	Sep. 17, 2025	Sep. 30, 2025	Dec. 31, 2024
Business Combination [Line Items]
Goodwill		$ 3,528.8	$ 3,286.6
Goodwill		$ 3,528.8	$ 3,286.6
Hydra-Stop, LLC
Business Combination [Line Items]
Consideration transferred	$ 292.2
Goodwill	166.6
Goodwill	166.6
Hydra-Stop, LLC \| Customer relationships
Business Combination [Line Items]
Finite-lived intangible assets acquired	$ 112.0
Finite-lived intangible assets, useful life	18 years
Hydra-Stop, LLC \| Proprietary technology
Business Combination [Line Items]
Finite-lived intangible assets acquired	$ 6.2
Finite-lived intangible assets, useful life	7 years

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

- Definition

+ References

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+ Details

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Current assets
Cash and cash equivalents	$ 128.4	$ 118.7
Accounts receivable, net of allowances of $6.7 and $9.1, respectively	521.6	565.2
Inventories	639.7	610.9
Other current assets	155.4	141.3
Total current assets	1,445.1	1,436.1
Property, plant and equipment, net	367.1	358.8
Other assets
Goodwill	3,528.8	3,286.6
Intangibles, net	1,088.0	1,033.8
Other non-current assets	330.6	331.2
Total other assets	4,947.4	4,651.6
Total assets	6,759.6	6,446.5
Current liabilities
Current maturities of short-term borrowings	0.0	9.3
Accounts payable	308.8	272.8
Employee compensation and benefits	111.9	116.2
Other current liabilities	567.5	496.8
Total current liabilities	988.2	895.1
Other liabilities
Long-term debt	1,580.1	1,638.7
Pension and other post-retirement compensation and benefits	56.5	61.6
Deferred tax liabilities	41.3	44.4
Other non-current liabilities	311.1	243.8
Total liabilities	2,977.2	2,883.6
Equity
Ordinary shares $0.01 par value, 426.0 authorized, 163.6 and 164.8 issued at September 30, 2025 and December 31, 2024, respectively	1.7	1.7
Additional paid-in capital	1,351.8	1,501.7
Retained earnings	2,700.6	2,336.1
Accumulated other comprehensive loss	(271.7)	(276.6)
Total equity	3,782.4	3,562.9
Total liabilities and equity	$ 6,759.6	$ 6,446.5

Income Taxes (Detail) - USD ($) $ in Millions	9 Months Ended
Income Taxes (Detail) - USD ($) $ in Millions	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Income Tax Disclosure [Abstract]
Effective income tax rate	14.80%	14.10%
Total gross liability for unrecognized tax benefits	$ 6.5		$ 6.0

Accounts Receivable (Tables)

9 Months Ended

Sep. 30, 2025

Receivables [Abstract]

Accounts Receivable, Allowance for Credit Loss

Activity related to our allowance for credit losses is summarized as follows for the nine months ended September 30, 2025:


In millions	September 30, 2025
Beginning balance	$	9.1
Bad debt benefit	(1.9)

Write-offs, net of recoveries	(0.7)
Other (1)	0.2
Ending balance	$	6.7
(1) Other amounts are primarily the effects of changes in currency translation and the impact of allowance for credits.

Revenue - Schedule of Contract Assets and Liabilities (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2025	Dec. 31, 2024
Revenue from Contract with Customer [Abstract]
Contract assets	$ 61.2	$ 46.7
Contract liabilities	44.8	38.8
Net contract (liabilities) assets	16.4	$ 7.9
$ Change
Contract assets	14.5
Contract liabilities	6.0
Net contract (liabilities) assets	$ 8.5
% Change
Contract assets	31.00%
Contract liabilities	15.50%
Net contract (liabilities) assets	107.60%

Supplemental Balance Sheet Information (Tables)

9 Months Ended

Sep. 30, 2025

Disclosure Supplemental Balance Sheet Information [Abstract]

Supplemental Balance Sheet Information


In millions	September 30, 2025		December 31, 2024
Inventories
Raw materials and supplies	$	320.4	$	315.8
Work-in-process	89.9		88.4
Finished goods	229.4		206.7
Total inventories	$	639.7	$	610.9
Other current assets
Cost in excess of billings	$	61.2	$	46.7
Prepaid expenses	79.8		51.0

Other current assets	14.4		43.6
Total other current assets	$	155.4	$	141.3
Property, plant and equipment, net
Land and land improvements	$	33.0	$	31.3
Buildings and leasehold improvements	237.1		217.9
Machinery and equipment	709.6		675.8
Capitalized software	99.1		92.2
Construction in progress	43.6		51.1
Total property, plant and equipment	1,122.4		1,068.3
Accumulated depreciation and amortization	755.3		709.5
Total property, plant and equipment, net	$	367.1	$	358.8
Other non-current assets
Right-of-use lease assets	$	108.1	$	116.1

Deferred income taxes	130.2		129.6
Deferred compensation plan assets	31.4		29.4

Other non-current assets	60.9		56.1
Total other non-current assets	$	330.6	$	331.2
Other current liabilities

Dividends payable	$	41.0	$	41.2
Accrued warranty	69.1		67.2
Accrued rebates and incentives	202.2		176.7
Accrued freight	15.3		18.4
Billings in excess of cost	37.9		33.8
Current lease liability	26.1		26.3
Income taxes payable	38.6		28.8
Accrued restructuring	12.9		18.7
Interest payable	11.6		5.5
Other current liabilities	112.8		80.2
Total other current liabilities	$	567.5	$	496.8
Other non-current liabilities
Long-term lease liability	$	86.7	$	92.8
Income taxes payable	6.2		8.1
Self-insurance liabilities	59.1		55.6
Deferred compensation plan liabilities	31.4		29.4
Foreign currency and interest rate contract liabilities	88.3		16.3
Other non-current liabilities	39.4		41.6
Total other non-current liabilities	$	311.1	$	243.8

Revenue (Tables)

9 Months Ended

Sep. 30, 2025

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

Geographic net sales information, based on geographic destination of the sale, was as follows:


	Three months ended				Nine months ended
In millions	September 30, 2025		September 30, 2024		September 30, 2025		September 30, 2024
U.S.	$	703.9	$	687.6	$	2,236.0	$	2,166.4
Western Europe	126.7		117.0		371.8		375.8
Developing (1)	130.6		129.9		375.8		391.9
Other Developed (2)	60.8		58.9		171.9		175.8
Consolidated net sales	$	1,022.0	$	993.4	$	3,155.5	$	3,109.9


(1) Developing includes China, Eastern Europe, Latin America, the Middle East and Southeast Asia.
(2) Other Developed primarily includes Australia and Canada.

Vertical market net sales information was as follows:


	Three months ended				Nine months ended
In millions	September 30, 2025		September 30, 2024		September 30, 2025		September 30, 2024
Residential	$	568.3	$	519.5	$	1,796.0	$	1,644.1
Commercial	257.6		282.7		781.8		864.9
Industrial	196.1		191.2		577.7		600.9
Consolidated net sales	$	1,022.0	$	993.4	$	3,155.5	$	3,109.9

Contract with Customer, Asset and Liability

Contract assets and liabilities

Contract assets and liabilities consisted of the following:


In millions	September 30, 2025		December 31, 2024		$ Change		% Change
Contract assets	$	61.2	$	46.7	$	14.5	31.0	%
Contract liabilities	44.8		38.8		6.0		15.5	%
Net contract assets	$	16.4	$	7.9	$	8.5	107.6	%

Segment Information

9 Months Ended

Sep. 30, 2025

Segment Reporting [Abstract]

Segment Information

We are comprised of three reportable segments: Flow, Water Solutions and Pool. We evaluate performance based on net sales and reportable segment income and use certain ratios, particularly return on sales, to measure performance of our reportable segments. These results are not necessarily indicative of the results of operations that would have occurred had each segment been an independent, stand-alone entity during the periods presented. Reportable segment income represents operating income of each reportable segment inclusive of equity income of unconsolidated subsidiaries and exclusive of intangible amortization, certain acquisition related expenses, costs of restructuring and transformation activities, impairments, legal accrual adjustments and settlements and other unusual non-operating items. “Corporate and other” activity primarily consists of corporate expenses not allocated to the segments, including executive office, board of directors, and centrally managed corporate functional or shared service costs related to finance, human resources, communications and corporate development. These activities do not meet the criteria for a stand-alone reportable segment under accounting standards codification (“ASC”) 280.

Financial information by reportable segment as well as a reconciliation of reportable segment income to consolidated income from continuing operations before income taxes is as follows:


	September 30, 2025		December 31, 2024
In millions	Identifiable assets (1)
Flow	$	2,005.3	$	1,590.7
Water Solutions	2,574.5		2,613.5
Pool	1,749.8		1,801.3
Reportable segment total	6,329.6		6,005.5
Corporate and other	430.0		441.0
Consolidated	$	6,759.6	$	6,446.5

(1) All cash and cash equivalents are included in “Corporate and other.”


	Three months ended				Nine months ended
	September 30, 2025		September 30, 2024		September 30, 2025		September 30, 2024
In millions	Capital expenditures
Flow	$	4.9	$	4.4	$	11.8	$	11.6
Water Solutions	4.0		3.7		9.7		18.6
Pool	8.0		3.9		18.2		12.1
Reportable segment total	16.9		12.0		39.7		42.3
Corporate and other	0.5		3.4		5.4		9.4
Consolidated	$	17.4	$	15.4	$	45.1	$	51.7


	Three months ended				Nine months ended
	September 30, 2025		September 30, 2024		September 30, 2025		September 30, 2024
In millions	Depreciation
Flow	$	5.2	$	5.4	$	15.6	$	16.2
Water Solutions	3.9		4.1		11.9		12.9
Pool	4.1		3.5		10.8		9.8
Reportable segment total	13.2		13.0		38.3		38.9
Corporate and other	2.1		1.9		6.4		6.4
Consolidated	$	15.3	$	14.9	$	44.7	$	45.3


Three months ended September 30, 2025

In millions	Flow		Water Solutions		Pool		Total
Net sales	$	394.0	$	273.3	$	354.3	$	1,021.6
Reconciliation of consolidated net sales
Corporate and other							0.4
Total consolidated net sales							$	1,022.0

Cost of goods sold (1)(3)	(240.7)		(165.9)		(195.5)
Operating expenses (1)(2)(3)	(58.0)		(39.0)		(42.6)
Reportable segment income	$	95.3	$	68.4	$	116.2	$	279.9
Corporate and other							(17.3)
Restructuring and other							(0.2)
Transformation costs							(10.8)


Asset impairment and write-offs							(1.5)




Deal-related costs and expenses							(4.1)


Intangible amortization							(13.9)
Interest expense, net							(14.4)
Other expense							(1.0)
Income from continuing operations before income taxes							$	216.7


Three months ended September 30, 2024

In millions	Flow		Water Solutions		Pool		Total
Net sales	$	372.2	$	289.5	$	331.4	$	993.1
Reconciliation of consolidated net sales
Corporate and other							0.3
Total consolidated net sales							$	993.4

Cost of goods sold (1)(3)	(235.0)		(180.8)		(181.4)
Operating expenses (1)(2)(3)	(54.4)		(44.3)		(37.3)
Reportable segment income	$	82.8	$	64.4	$	112.7	$	259.9
Corporate and other							(20.7)
Restructuring and other							(23.4)
Transformation costs							(12.6)


Asset impairment and write-offs							(8.5)
Legal accrual adjustments and settlements							(0.7)
Intangible amortization							(13.5)
Interest expense, net							(19.8)
Other expense							(0.5)
Income from continuing operations before income taxes							$	160.2


Nine months ended September 30, 2025

In millions	Flow		Water Solutions		Pool		Total
Net sales	$	1,159.2	$	829.8	$	1,165.4	$	3,154.4
Reconciliation of consolidated net sales
Corporate and other							1.1
Total consolidated net sales							$	3,155.5

Cost of goods sold (1)(3)	(715.8)		(507.5)		(638.3)
Operating expenses (1)(2)(3)	(171.4)		(123.0)		(132.2)
Reportable segment income	$	272.0	$	199.3	$	394.9	$	866.2
Corporate and other							(64.4)
Restructuring and other							(21.1)
Transformation costs							(32.4)


Asset impairment and write-offs							(48.5)
Loss on sale of business							(26.3)



Deal-related costs and expenses							(4.1)


Intangible amortization							(42.4)
Interest expense, net							(52.0)
Other expense							(2.9)
Income from continuing operations before income taxes							$	572.1


Nine months ended September 30, 2024

In millions	Flow		Water Solutions		Pool		Total
Net sales	$	1,153.3	$	873.1	$	1,082.4	$	3,108.8
Reconciliation of consolidated net sales
Corporate and other							1.1
Total consolidated net sales							$	3,109.9

Cost of goods sold (1)(3)	(732.1)		(547.1)		(604.4)
Operating expenses (1)(2)(3)	(176.7)		(133.1)		(120.9)
Reportable segment income	$	244.5	$	192.9	$	357.1	$	794.5
Corporate and other							(66.6)
Restructuring and other							(33.9)
Transformation costs							(41.4)


Asset impairment and write-offs							(9.3)
Legal accrual adjustments and settlements							7.5
Intangible amortization							(40.4)
Interest expense, net							(73.4)
Other expense							(2.5)
Income from continuing operations before income taxes							$	534.5

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-21

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Debt - Additional Information (Detail)			9 Months Ended		12 Months Ended
Debt - Additional Information (Detail)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2025 USD ($) testingPeriod	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)	Jun. 30, 2022 USD ($)
Debt Instrument [Line Items]
Repayments of long-term debt			$ 269,300,000	$ 362,500,000
Leverage ratio covenant period			12 months
Line of Credit \| Term Loans Due 2024
Debt Instrument [Line Items]
Optional line of credit limit increase			$ 450,000,000.0
Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity			900,000,000.0
Available capacity			680,000,000.0
Debt, gross			$ 220,000,000.0		$ 9,500,000
Line of Credit \| Revolving Credit Facility \| Pentair, Pentair Finance S.à r.l (“PFSA“)
Debt Instrument [Line Items]
Number of testing periods \| testingPeriod			4
Line of Credit \| Revolving Credit Facility \| Minimum
Debt Instrument [Line Items]
Debt covenant, unrestricted cash			$ 5,000,000.0
Debt agreement financial covenant, leverage ratio			1.00
EBITDA ratio for debt			1.00
Line of Credit \| Revolving Credit Facility \| Minimum \| Pentair, Pentair Finance S.à r.l (“PFSA“)
Debt Instrument [Line Items]
Debt agreement financial covenant, leverage ratio			4.25
Line of Credit \| Revolving Credit Facility \| Maximum
Debt Instrument [Line Items]
Debt covenant, unrestricted cash			$ 250,000,000.0
Debt agreement financial covenant, leverage ratio			3.75
EBITDA ratio for debt			3.00
Line of Credit \| Revolving Credit Facility \| Maximum \| Pentair, Pentair Finance S.à r.l (“PFSA“)
Debt Instrument [Line Items]
Debt agreement financial covenant, leverage ratio			1.00
Term Loans
Debt Instrument [Line Items]
Repayments of principal in next twelve months			$ 0
Term Loans \| 5-year Term Loan Facility
Debt Instrument [Line Items]
Debt, gross			575,000,000.0		825,000,000.0
Unsecured Debt \| 5-year Term Loan Facility
Debt Instrument [Line Items]
Debt, principal amount						$ 1,000,000,000
Debt installment payment amount	$ 12,500,000	$ 6,300,000
Repayments of long-term debt					$ 162,500,000
Debt, gross			575,000,000
Other Credit Facilities
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity			20,900,000
Borrowings outstanding			$ 0

Goodwill and Other Identifiable Intangible Assets

9 Months Ended

Sep. 30, 2025

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Identifiable Intangible Assets

The changes in the carrying amount of goodwill by reportable segment were as follows:


In millions	December 31, 2024		Acquisitions		Foreign Currency Translation		September 30, 2025
Flow	$	730.4	$	166.6	$	62.1	$	959.1
Water Solutions	1,392.7		—		13.5		1,406.2
Pool	1,163.5		—		—		1,163.5
Total goodwill	$	3,286.6	$	166.6	$	75.6	$	3,528.8

Identifiable intangible assets consisted of the following:


	September 30, 2025						December 31, 2024
In millions	Cost		Accumulated amortization		Net		Cost		Accumulated amortization		Net
Definite-life intangibles
Customer relationships	$	1,163.9	$	(373.5)	$	790.4	$	1,146.5	$	(400.2)	$	746.3
Proprietary technology and patents	82.3		(39.8)		42.5		88.8		(48.4)		40.4


Total definite-life intangibles	1,246.2		(413.3)		832.9		1,235.3		(448.6)		786.7
Indefinite-life intangibles
Trade names	255.1		—		255.1		247.1		—		247.1
Total intangibles	$	1,501.3	$	(413.3)	$	1,088.0	$	1,482.4	$	(448.6)	$	1,033.8

Identifiable intangible asset amortization expense was $13.9 million and $13.5 million for the three months ended September 30, 2025 and 2024, and $42.4 million and $40.4 million for the nine months ended September 30, 2025 and 2024, respectively.

An impairment charge of $30.9 million was recorded during the nine months ended September 30, 2025 related to the write-off of a definite-lived customer relationship intangible asset as a result of a business exit within our Water Solutions segment during the second quarter of 2025. The impairment charge was recorded in Selling, general and administrative expenses in the Condensed Consolidated Statements of Operations and Comprehensive Income. No impairment was recognized for identifiable intangible assets for the three months ended September 30, 2025 and the three and nine months ended September 30, 2024.

Estimated future amortization expense for identifiable intangible assets during the remainder of 2025 and the next five years is as follows:


	Q4
	2025		2026		2027		2028		2029		2030
Estimated amortization expense	$	15.7	$	61.5	$	60.2	$	57.6	$	57.1	$	56.6

Goodwill and Other Identifiable Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of Intangible Assets	$ 13.9	$ 13.5	$ 42.4	$ 40.4
Impairment of intangible assets	$ 0.0	$ 0.0	$ 30.9	$ 0.0

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets.

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+ Details

Segment Information - Reconciliation of Income from Continuing Operations from Segments to Consolidated (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	$ 1,022.0	$ 993.4	$ 3,155.5	$ 3,109.9
Cost of goods sold	(603.4)	(600.2)	(1,877.0)	(1,888.7)
Reportable segment income	231.7	179.9	652.5	608.7
Restructuring and other	(1.1)	(28.3)	(26.3)	(38.6)
Transformation costs	(11.5)	(15.4)	(48.6)	(44.2)
Asset impairment and write-offs			(48.5)	(9.3)
Loss on sale of business	0.0	0.0	(26.3)	0.0
Intangible amortization	(13.9)	(13.5)	(42.4)	(40.4)
Income from continuing operations before income taxes	216.7	160.2	572.1	534.5
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	1,021.6	993.1	3,154.4	3,108.8
Reportable segment income	279.9	259.9	866.2	794.5
Operating Segments \| Flow
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	394.0	372.2	1,159.2	1,153.3
Cost of goods sold	(240.7)	(235.0)	(715.8)	(732.1)
Operating expenses	(58.0)	(54.4)	(171.4)	(176.7)
Reportable segment income	95.3	82.8	272.0	244.5
Operating Segments \| Water Solutions
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	273.3	289.5	829.8	873.1
Cost of goods sold	(165.9)	(180.8)	(507.5)	(547.1)
Operating expenses	(39.0)	(44.3)	(123.0)	(133.1)
Reportable segment income	68.4	64.4	199.3	192.9
Operating Segments \| Pool
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	354.3	331.4	1,165.4	1,082.4
Cost of goods sold	(195.5)	(181.4)	(638.3)	(604.4)
Operating expenses	(42.6)	(37.3)	(132.2)	(120.9)
Reportable segment income	116.2	112.7	394.9	357.1
Corporate and other
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	0.4	0.3	1.1	1.1
Reportable segment income	(17.3)	(20.7)	(64.4)	(66.6)
Reconciling items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Restructuring and other	(0.2)	(23.4)	(21.1)	(33.9)
Transformation costs	(10.8)	(12.6)	(32.4)	(41.4)
Asset impairment and write-offs	(1.5)	(8.5)	(48.5)	(9.3)
Loss on sale of business			(26.3)
Deal-related costs and expenses	(4.1)		(4.1)
Legal accrual adjustments and settlements		(0.7)		7.5
Intangible amortization	(13.9)	(13.5)	(42.4)	(40.4)
Interest expense, net	(14.4)	(19.8)	(52.0)	(73.4)
Other expense	(1.0)	(0.5)	(2.9)	(2.5)
Income from continuing operations before income taxes	$ 216.7	$ 160.2	$ 572.1	$ 534.5

Derivatives and Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2025

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Recorded Amounts and Estimated Fair Values of Long-term Debt and Derivative Financial Instruments

The recorded amounts and estimated fair values of total debt, excluding unamortized issuance costs and discounts, were as follows:


	September 30, 2025				December 31, 2024
In millions	Recorded Amount		Fair Value		Recorded Amount		Fair Value
Variable rate debt	$	795.0	$	795.0	$	843.8	$	843.8
Fixed rate debt	800.0		826.4		819.3		814.3
Total debt	$	1,595.0	$	1,621.4	$	1,663.1	$	1,658.1

Financial Assets and Liabilities Measured at Fair Value on Recurring Basis

Financial assets and liabilities measured at fair value on a recurring and nonrecurring basis were as follows:


	September 30, 2025
In millions	Level 1		Level 2		Level 3		NAV		Total
Recurring fair value measurements

Interest rate contract liabilities	$	—	$	(0.1)	$	—	$	—	$	(0.1)
Foreign currency contract assets	—		0.1		—		—		0.1
Foreign currency contract liabilities	—		(88.2)		—		—		(88.2)


Deferred compensation plan assets	14.7		—		—		16.7		31.4
Contingent earn-out liabilities	—		—		(8.0)		—		(8.0)
Total recurring fair value measurements	$	14.7	$	(88.2)	$	(8.0)	$	16.7	$	(64.8)
Nonrecurring fair value measurements (1)


	December 31, 2024
In millions	Level 1		Level 2		Level 3		NAV		Total
Recurring fair value measurements
Interest rate contract assets	$	—	$	1.9	$	—	$	—	$	1.9
Foreign currency contract assets	—		2.5		—		—		2.5
Foreign currency contract liabilities	—		(16.3)		—		—		(16.3)
Deferred compensation plan assets	15.0		—		—		14.4		29.4
Contingent earn-out liabilities	—		—		(8.0)		—		(8.0)
Total recurring fair value measurements	$	15.0	$	(11.9)	$	(8.0)	$	14.4	$	9.5

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

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+ Details

Acquisitions	9 Months Ended
Acquisitions	Sep. 30, 2025
Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract]
Acquisitions	Acquisitions On September 17, 2025, as part of our Flow reportable segment, we completed the acquisition of Hydra-Stop, LLC for $292.2 million in cash, net of cash acquired, and subject to customary adjustments. The excess purchase price over tangible and identifiable intangible net assets acquired has been preliminarily allocated to goodwill in the amount of $166.6 million, all of which is expected to be deductible for income tax purposes. Identifiable intangible assets acquired include $112.0 million of definite-lived customer relationships with an estimated useful life of 18 years and $6.2 million of definite-lived proprietary technology intangible assets with an estimated useful life of 7 years. The pro forma impact of the acquisition was not material.

- Definition

The entire disclosure for business combination.

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+ Details

Shareholders' Equity (Detail) - USD ($) $ / shares in Units, shares in Millions	1 Months Ended	3 Months Ended						9 Months Ended
	Dec. 31, 2020	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2025	Dec. 31, 2024	Dec. 01, 2020
Stockholders Equity Note Disclosure [Line Items]
Share repurchases		$ 50,000,000.0	$ 75,000,000.0	$ 50,000,000.0	$ 50,000,000.0	$ 50,000,000.0		$ 175,000,000.0
Dividends (in dollars per share)		$ 0.25	$ 0.25	$ 0.25	$ 0.23	$ 0.23	$ 0.23
Dividends payable		$ 41,000,000.0						$ 41,000,000.0	$ 41,200,000
December 2020 Share Repurchase Program
Stockholders Equity Note Disclosure [Line Items]
Repurchase of shares of our common stock up to a maximum aggregate value										$ 750,000,000.0
Common stock authorized for repurchase, expiration date	Dec. 31, 2025
Share repurchase (in shares)								1.8
Share repurchase program remaining available amount		$ 275,000,000.0						$ 275,000,000.0

- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References + Details

- Definition

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References + Details

Debt

9 Months Ended

Sep. 30, 2025

Debt Disclosure [Abstract]

Debt

Debt and the average interest rates on debt outstanding were as follows:


In millions	Average interest rate as of September 30, 2025	Maturity Year	September 30, 2025		December 31, 2024

Revolving credit facility (Senior Credit Facility)	5.268%	2030	$	220.0	$	9.5
Term Loan Facility	5.502%	2027	575.0		825.0

Senior notes - fixed rate (1)	N/A	2025	—		19.3
Senior notes - fixed rate (1)	4.500%	2029	400.0		400.0
Senior notes - fixed rate (1)	5.900%	2032	400.0		400.0
Other	N/A	2025	—		9.3
Unamortized debt issuance costs and discounts	N/A	N/A	(14.9)		(15.1)
Total debt			1,580.1		1,648.0
Less: Current maturities of short-term borrowings			—		9.3
Long-term debt			$	1,580.1	$	1,638.7
(1) Senior notes are guaranteed as to payment by Pentair plc.

Pentair, Pentair Finance S.à r.l (“PFSA”) and Pentair, Inc. are parties to a credit agreement (the “Senior Credit Facility”), with Pentair as guarantor and PFSA and Pentair, Inc. as borrowers, which was amended and restated in May 2025, providing for a $900.0 million senior unsecured revolving credit facility. The Senior Credit Facility has a maturity date of May 5, 2030. Borrowings under the Senior Credit Facility bear interest at a rate equal to an alternate base rate, adjusted term secured overnight financing rate, adjusted euro interbank offered rate, adjusted daily simple secured overnight financing rate or central bank rate, plus, in each case, an applicable margin. The applicable margin is based on, at PFSA’s election, Pentair’s leverage level or PFSA’s public credit rating.

As of September 30, 2025, total availability under the Senior Credit Facility was $680.0 million. In addition, PFSA has the option to request to increase the revolving credit facility and/or to enter into one or more tranches of term loans in an aggregate amount of up to $450.0 million, subject to customary conditions, including the commitment of the participating lenders.

In addition, Pentair and PFSA are parties to a senior unsecured term loan facility (the “Term Loan Facility”), with PFSA, as borrower, Pentair, as guarantor, providing for an aggregate principal amount of $1.0 billion. The Term Loan Facility has a maturity date of July 28, 2027, with required quarterly installment payments of $6.3 million which began on the last day of the third quarter of 2023 and increased to $12.5 million on the last day of the third quarter of 2024. During 2024, PFSA repaid the remaining $162.5 million of quarterly installments on the Term Loan Facility, such that PFSA is not required to make any further quarterly installment payments. As of September 30, 2025, the remaining obligation of $575.0 million matures on July 28, 2027. The Term Loan Facility bears interest at a rate equal to an alternate base rate, adjusted term secured overnight financing rate, or adjusted daily simple secured overnight financing rate, plus, in each case, an applicable margin. The applicable margin is based on, at PFSA’s election, Pentair’s leverage level or PFSA’s public credit rating.

Our debt agreements contain various financial covenants, but the most restrictive covenants are contained in the Senior Credit Facility and the Term Loan Facility. The Senior Credit Facility and the Term Loan Facility contain covenants requiring us not to permit (i) the ratio of our consolidated debt (net of our consolidated unrestricted cash and cash equivalents in excess of $5.0 million but not to exceed $250.0 million) to our consolidated net income (excluding, among other things, non-cash gains and losses) before interest, taxes, depreciation, amortization and non-cash share-based compensation expense (“EBITDA”) on the last day of any period of four consecutive fiscal quarters (each, a “testing period”) to exceed 3.75 to 1.00 (or, at PFSA’s election and subject to certain conditions, 4.25 to 1.00 for four testing periods in connection with certain material acquisitions) (the “Leverage Ratio”) and (ii) the ratio of our EBITDA to our consolidated interest expense, for the same period to be less than 3.00 to 1.00 as of the end of each fiscal quarter. For purposes of the Leverage Ratio, the Senior Credit Facility and the Term Loan Facility provide for the calculation of EBITDA giving pro forma effect to certain acquisitions, divestitures and liquidations during the period to which such calculation relates.

In addition to the Senior Credit Facility and the Term Loan Facility, we have various other credit facilities with an aggregate availability of $20.9 million, of which there were no outstanding borrowings at September 30, 2025. Borrowings under these credit facilities bear interest at variable rates.

We have no senior notes maturing in the next twelve months.

Debt outstanding, excluding unamortized issuance costs and discounts, at September 30, 2025 matures on a calendar year basis as follows:


	Q4
In millions	2025		2026		2027		2028		2029		2030		Thereafter		Total
Contractual debt obligation maturities	$	—	$	—	$	575.0	$	—	$	400.0	$	220.0	$	400.0	$	1,595.0

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References

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+ Details

Commitments and Contingencies

9 Months Ended

Sep. 30, 2025

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Warranties

We provide service and warranty policies on our products. Liability under service and warranty policies is based upon a review of historical warranty and service claim experience. Adjustments are made to accruals as claim data and historical experience warrant.

The changes in the carrying amount of service and product warranties from continuing operations for the nine months ended September 30, 2025 were as follows:


In millions	September 30, 2025
Beginning balance	$	67.2
Service and product warranty provision	34.4
Payments	(33.3)

Foreign currency translation	0.8
Ending balance	$	69.1

Stand-by letters of credit, bank guarantees and bonds

In the ordinary course of business, we are required to commit to bonds, letters of credit and bank guarantees that require payments to our customers for any non-performance. The outstanding face value of these instruments fluctuates with the value of our projects in process and in our backlog. In addition, we issue financial stand-by letters of credit primarily to secure our performance to third parties under self-insurance programs.

As of September 30, 2025 and December 31, 2024, the outstanding value of bonds, letters of credit and bank guarantees totaled $105.1 million and $102.1 million, respectively.

Restructuring and Transformation Program (Tables)

9 Months Ended

Sep. 30, 2025

Restructuring and Related Activities [Abstract]

Restructuring And Transformation Related Costs


	Three months ended				Nine months ended
In millions	September 30, 2025		September 30, 2024		September 30, 2025		September 30, 2024
Restructuring Initiatives
Severance and related costs	$	—	$	17.4	$	20.3	$	26.8

Other restructuring costs and related adjustments (1)	1.1		10.9		6.0		11.8
Total restructuring costs	1.1		28.3		26.3		38.6
Transformation Program
Severance and related costs	—		—		—		0.7
Asset impairment and write-offs	0.7		2.8		16.2		2.8
Other transformation costs (2)	10.8		12.6		32.4		40.7
Total transformation costs	11.5		15.4		48.6		44.2
Total restructuring and transformation costs	$	12.6	$	43.7	$	74.9	$	82.8
(1) Other restructuring costs and related adjustments primarily consist of certain accruals and related refinements as well as various contract termination costs, asset impairments and inventory write-offs associated with business and product line exits.
(2) Other transformation costs primarily consist of professional services and project management related costs.

Restructuring And Transformation Costs By Segment

Restructuring and transformation costs by reportable segment as well as Corporate and other were as follows:


	Three months ended				Nine months ended
In millions	September 30, 2025		September 30, 2024		September 30, 2025		September 30, 2024
Flow	$	(1.4)	$	6.0	$	17.1	$	11.0
Water Solutions	0.9		16.2		10.7		17.7
Pool	2.8		4.7		11.8		10.1
Corporate and other	10.3		16.8		35.3		44.0
Total restructuring and transformation costs	$	12.6	$	43.7	$	74.9	$	82.8

Restructuring Accrual Activity Recorded on Consolidated Balance Sheets


In millions	September 30, 2025
Beginning balance	$	18.7

Costs incurred	20.3
Cash payments and other	(26.1)
Ending balance	$	12.9

Restructuring and Transformation Program - Restructuring Costs by Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Restructuring Cost and Reserve [Line Items]
Restructuring and transformation costs	$ 12.6	$ 43.7	$ 74.9	$ 82.8
Corporate and other
Restructuring Cost and Reserve [Line Items]
Restructuring and transformation costs	10.3	16.8	35.3	44.0
Flow \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring and transformation costs	(1.4)	6.0	17.1	11.0
Water Solutions \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring and transformation costs	0.9	16.2	10.7	17.7
Pool \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring and transformation costs	$ 2.8	$ 4.7	$ 11.8	$ 10.1

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References + Details