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Customer, Liability, Current Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Stockholders Equity Note Disclosure [Table] Stockholders Equity Note Disclosure [Table] Stockholders Equity Note Disclosure [Table] Fair Value Impact Reclassification, Fair Value Impact [Member] Reclassification, Fair Value Impact Long-term debt Long-Term Debt, Excluding Current Maturities Award Type [Axis] Award Type [Axis] Interest Rate Contract Interest Rate Contract [Member] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Retained earnings Retained Earnings (Accumulated Deficit) Pool Pool [Member] Pool Restructuring and Related Activities [Abstract] Restructuring and Related Activities [Abstract] Changes in market value of derivative financial instruments, net of tax Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Ordinary shares Common Stock [Member] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Expected share price volatility Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Shares issued (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period Cover [Abstract] Expected dividend yield Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate Contract liabilities Contract With Customer, Liability, Increase (Decrease), Amount Contract with Customer, Liability, Increase (Decrease), Amount Tranche 2 Term Loan Facility Tranche 2 Term Loan Facility [Member] Tranche 2 Term Loan Facility Derivative Contract [Domain] Derivative Contract [Domain] Disclosure Supplemental Balance Sheet Information [Abstract] Disclosure Supplemental Balance Sheet Information [Abstract] Disclosure - Supplemental Balance Sheet Information [Abstract] Optional line of credit limit increase Line of Credit Facility, Accordion Feature, Increase Limit Line of Credit Facility, Accordion Feature, Increase Limit Equity Awards Adjustments Equity Awards Adjustments [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Total liabilities and equity Liabilities and Equity Employee Stock Option Share-Based Payment Arrangement, Option [Member] Industry Sector [Domain] Industry Sector [Domain] Segments [Axis] Segments [Axis] Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Restructuring costs Restructuring and other Restructuring Charges Plan Name [Axis] Plan Name [Axis] Tabular List, Table Tabular List [Table Text Block] Additional paid-in capital Additional Paid in Capital Detail of Identifiable Intangible Assets Schedule Of Intangible Assets Table [Table Text Block] Schedule Of Intangible Assets. 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Outstanding and Unvested [Member] EBITDA ratio for debt Debt Instrument, EBITDA Ratio Covenant Debt Instrument, EBITDA Ratio Covenant Long-Lived Asset, Class [Domain] Long-Lived Asset, Class [Domain] Taco Taco [Member] Taco Raw materials and supplies Inventory, Raw Materials and Supplies, Gross December 2025 Share Repurchase Program December 2025 Share Repurchase Program [Member] December 2025 Share Repurchase Program Property, Plant, and Equipment [Table] Property, Plant, and Equipment [Table] Adjustment to Compensation: Adjustment to Compensation [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Credit Facility [Axis] Credit Facility [Axis] Restructuring and Transformation Program Restructuring and Related Activities Disclosure [Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Pentair, Pentair Finance S.à r.l (“PFSA“) Pentair, Pentair Finance S.à r.l (“PFSA“) [Member] Pentair, Pentair Finance S.à r.l (“PFSA“) Developing Developing Countries [Member] Developing Countries [Member] Name Measure Name Income Taxes Income Tax Disclosure [Text Block] Accounts payable Accounts Payable, Current Changes in cumulative translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax Pay vs Performance Disclosure [Line Items] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Debt Instrument [Line Items] Debt Instrument [Line Items] Other current assets Increase (Decrease) in Other Current Assets Debt covenant, unrestricted cash Debt Instrument, Covenant, Unrestricted Cash Debt Instrument, Covenant, 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Loan Facility Tranche 1 Term Loan Facility [Member] Tranche 1 Term Loan Facility Other current assets Prepaid Expense and Other Assets, Current [Abstract] Company Selected Measure Amount Company Selected Measure Amount Segment Reporting, Reconciliation of Profit (Loss) by Segment to Consolidated Segment Reporting, Reconciliation of Profit (Loss) by Segment to Consolidated [Table Text Block] Entity Address, Address Line Two Entity Address, Address Line Two Net income Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest 2031 Long-Term Debt, Maturity, Year Five Current assets Assets, Current [Abstract] Interest rate contract liabilities Derivative Liability Non-PEO NEO Non-PEO NEO [Member] Senior Notes Senior Notes [Member] Transformation Type [Domain] Transformation Type [Domain] Transformation Type [Domain] Entity Address, Address Line One Entity Address, Address Line One Provision for income taxes Income Tax Expense (Benefit) Cost of goods sold Cost of goods sold Cost of Product and Service Sold Award Timing Method Award Timing Method [Text Block] Change in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forecast Forecast [Member] Accounts receivable, net of allowances of $5.2 and $6.8, respectively Accounts and Financing Receivable, after Allowance for Credit Loss Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Contract liabilities Contract With Customer, Liability, Increase (Decrease), Percent Contract With Customer, Liability, Increase (Decrease), Percent Net income Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Unamortized debt issuance costs and discounts Unamortized Debt Issuance Expense Bridge Loan Bridge Loan [Member] Statement [Table] Statement [Table] Proceeds from sale of property and equipment Proceeds from Sale of Property, Plant, and Equipment Reconciling items Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member] Restatement Determination Date: Restatement Determination Date [Axis] Severance and related costs Severance And Related Costs [Member] Severance And Related Costs [Member] Percent of contract liabilities Contract with Customer, Liability, Revenue Recognized, Percent Contract with Customer, Liability, Revenue Recognized, Percent Contract with Customer, Asset and Liability Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Other non-current assets Other Long Term Assets Other long term assets, excluding asbestos-related insurance receivables and deferred income taxes. Net income from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract]