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Sell CNY Buy EUR Sell CND Buy EUR [Member] Sell CND Buy EUR Restructuring cost incurred Restructuring costs incurred during period Restructuring and Related Cost, Incurred Cost Minimum Minimum [Member] Restatement Determination Date Restatement Determination Date Vested and expected, end of period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Debt issuance costs and unamortized discount Unamortized Debt Issuance Expense Adoption Date Trading Arrangement Adoption Date Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Amount of (gain) loss reclassified into net income Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net Outstanding, beginning of period (in usd per share) Outstanding, end of period (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Outstanding, beginning of period (in shares) Outstanding, end of period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Goodwill Adjustment Due To Segment Reallocation, Adjusted Balance Goodwill Adjustment Due To Segment Reallocation, Adjusted Balance [Member] Goodwill Adjustment Due To Segment Reallocation, Adjusted Balance Segments [Axis] Segments [Axis] Other non-current accrued liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Business Acquisition, Pro Forma Revenue Business Acquisition, Pro Forma Revenue Cash paid for equity investments Payments to Acquire Equity Method Investments Derivative Instrument [Axis] Derivative Instrument [Axis] Senior Notes Due Long-Term Debt, Gross Exercise Price Award Exercise Price Earnings Per Share Earnings Per Share [Text Block] Restructuring Charges Restructuring, Impairment, and Other Activities Disclosure [Text Block] Arrangement Duration Trading Arrangement Duration Effect of derivative financial instruments Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block] Beginning balance Ending balance Contract with Customer, Asset, before Allowance for Credit Loss Goodwill and Other Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Stockholders’ equity: Equity, Attributable to Parent [Abstract] Granted (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Restructuring Plan [Axis] Restructuring Plan [Axis] Segments [Domain] Segments [Domain] Income tax (benefit) expense related to items of other comprehensive income (loss) Other Comprehensive Income (Loss), Tax Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Business Combination, Consideration Transferred, Equity Interest Issued And Issuable, Replacement Equity Awards Business Combination, Consideration Transferred, Equity Interest Issued And Issuable, Replacement Equity Awards Business Combination, Consideration Transferred, Equity Interest Issued And Issuable, Replacement Equity Awards Term of debt Debt Instrument, Term Evoqua Carbon Reactivation And Slurry Operations Evoqua Carbon Reactivation And Slurry Operations [Member] Evoqua Carbon Reactivation And Slurry Operations All Individuals All Individuals [Member] Net charges for product warranties in the period Standard Product Warranty Accrual, Increase (Decrease) for Preexisting Warranties Background and Basis of Presentation Basis of Presentation and Significant Accounting Policies [Text Block] PEO PEO [Member] Confirmed invoices paid Supplier Finance Program, Obligation, Settlement Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Name Trading Arrangement, Individual Name Other non-operating income, net Other non-operating income Other Nonoperating Income (Expense) Other intangible assets, net Other Intangibles, Net Intangibles Intangible Assets, Net (Excluding Goodwill) Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Derivative Instruments Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] Disposal Group Name [Axis] Disposal Group Name [Axis] Cash received from cross-currency swaps Proceeds from Derivative Instrument, Investing Activities Components of net periodic benefit cost and other amounts recognized in other comprehensive income Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block] Foreign currency and other Restructuring Reserve, Translation and Other Adjustment Proceeds from Sales of Assets, Investing Activities Proceeds from Sales of Assets, Investing Activities Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Foreign currency translation adjustment for post-retirement benefit plans Other Comprehensive Income (Loss), Foreign Exchange for Pension and Non-Pension Postretirement Benefit Plans, before tax Other Comprehensive Income (Loss), Foreign Exchange for Pension and Non-Pension Postretirement Benefit Plans, before tax Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Assets held for sale Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Assets Held-For-Sale Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Assets Held-For-Sale Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Restructuring Cost and Reserve [Line Items] Restructuring Cost and Impairment Charge Restructuring Cost and Reserve [Line Items] Summary of Intangible Assets Acquired Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block] Local Phone Number Local Phone Number Other Intangibles, Carrying Amount Intangible Assets, Gross (Excluding Goodwill) Total debt Debt, Long-Term and Short-Term, Combined Amount Unrealized gain (loss) Amount of gain (loss) recognized in OCI Unrealized Gain (Loss) on Foreign Currency Derivatives, Net, before Tax Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Guarantee amounts Guarantor Obligations, Current Carrying Value Applied Water Applied Water Applied Water [Member] Applied Water [Member] Financial information for each reportable segment Reconciliation of Revenue from Segments to Consolidated [Table Text Block] Deferred income tax liabilities Deferred Income Tax Liabilities, Net Volatility Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Senior Notes due 2046 Senior Notes Due Two Thousand Forty Six [Member] Senior Notes Due Two Thousand Forty Six [Member] Summary of restricted stock activity Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] Interest Expense Interest Expense [Member] Short-term borrowings and current maturities of long-term debt Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-Term Debt Opening balance from the acquisition of Evoqua Contract with Customer, Asset, Increase (Decrease) for Contract Acquired in Business Combination Changes in assets and liabilities (net of acquisitions): Increase (Decrease) in Operating Capital [Abstract] PEO Total Compensation Amount PEO Total Compensation Amount Income Statement Location [Axis] Statement of Income Location, Balance [Axis] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Vested and expected, end of period (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Derivative Financial Instruments Derivative Instruments Gains Losses In Statement Of Financial Performance [Abstract] Derivative instruments gains losses in statement of financial performance. Additions, net Contract With Customer, Liability, Additions Contract With Customer, Liability, Additions Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Common Stock Common Stock [Member] Components of net periodic benefit cost and other amounts recognized in other comprehensive income : Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] Measure: Measure [Axis] Goodwill Adjustment Due To Segment Reallocation Goodwill Adjustment Due To Segment Reallocation [Member] Goodwill Adjustment Due To Segment Reallocation Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Proceeds from exercise of employee stock options excluding SBC Proceeds From Stock Options Exercised, Excluding Stock Based Compensation Proceeds From Stock Options Exercised, Excluding Stock Based Compensation 2024 Plan Two Thousand Twenty Four Restructuring Plan [Member] Two Thousand Twenty Four Restructuring Plan Line of Credit Line of Credit [Member] Entity Emerging Growth Company Entity Emerging Growth Company Segment Reporting [Abstract] Segment Reporting [Abstract] Entity Central Index Key Entity Central Index Key Statement of Financial Position Location, Activity, Accrual [Domain] Statement of Financial Position Location, Activity, Accrual [Domain] Inventories Schedule of Inventory, Current [Table Text Block] Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Foreign Currency Translation Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Accrued and Other Current Liabilities Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Equity Equity [Text Block] Warranty accrual – January 1 Warranty accrual – June 30 Standard Product Warranty Accrual Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Equity Component [Domain] Equity Component [Domain] Water Infrastructure Water Infrastructure Water Infrastructure [Member] Water Infrastructure [Member] Segment Information Segment Reporting Disclosure [Text Block] Class of Treasury Stock [Table] Class of Treasury Stock [Table] Adjustments to reconcile net income to net cash provided by operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Stock incentive plan activity APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Restricted stock units Restricted Stock [Member] Entity Shell Company Entity Shell Company Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Goodwill and Other Intangible Assets Intangible Assets, Net (Excluding Goodwill) [Abstract] Title Trading Arrangement, Individual Title Emerging Markets Emerging Markets [Member] Emerging Markets Other Intangible Assets Schedule Of Intangible Assets Excluding Goodwill [Table Text Block] Schedule of intangible assets excluding goodwill. Statement [Table] Statement [Table] Treatment Treatment [Member] Treatment [Member] Recently Issued Accounting Pronouncements Significant Accounting Policies [Text Block] Consolidation Items [Domain] Consolidation Items [Domain] City Area Code City Area Code Current liabilities: Liabilities, Current [Abstract] Schedule of Earnings Per Share Basic and Diluted [Line Items] Schedule of Earnings Per Share Basic and Diluted [Line Items] Schedule of earnings per share basic and diluted. Measurement and Control Solutions Measurement and Control Solutions [Member] Measurement and Control Solutions [Member] Interest Interest Paid, Excluding Capitalized Interest, Operating Activities Total expected costs remaining Restructuring and Related Cost, Expected Cost Remaining Disposal Group Classification [Domain] Disposal Group Classification [Domain] Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Capital expenditures Capital expenditures Payments to Acquire Productive Assets Other non-operating income Other Expense [Member] Total current assets Assets, Current Receivables, net Accounts Receivable, before Allowance for Credit Loss Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Senior Notes Senior Notes [Member] Inventories Inventory, Net, Combining Work in Process and Raw Materials Alternative [Abstract] Assets Foreign Currency Cash Flow Hedge Asset at Fair Value Changes in accrued and deferred taxes Increase (Decrease) in Accrued Taxes Payable Gross Gross Assets [Abstract] Gross Assets Line of Credit Facility, Remaining Borrowing Capacity Line of Credit Facility, Remaining Borrowing Capacity Repurchase of common stock Payments for Repurchase of Common Stock Options exercisable, ending of period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Employer contribution to defined benefit plan Defined Benefit Plan, Plan Assets, Contributions by Employer Long-term debt Long-Term Debt, Excluding Current Maturities Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Other intangible assets, net Fair Value (in millions) Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Weighted Average Grant Date Fair Value Per Share Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Restructuring Reserve [Roll Forward] Restructuring Reserve [Roll Forward] Other Other Intangible Assets [Member] Income Taxes Income Tax Disclosure [Text Block] Legacy Evoqua Stockholders Legacy Evoqua Stockholders [Member] Legacy Evoqua Stockholders Earnings per share: Earnings Per Share [Abstract] Earnings Per Share [Abstract] Equity [Abstract] Equity [Abstract] Raw materials Inventory, Raw Materials, Net of Reserves Retained earnings Retained Earnings (Accumulated Deficit) Buy AUD Sell EUR Buy AUD Sell EUR [Member] Buy AUD Sell EUR Class of Stock [Domain] Class of Stock [Domain] Domestic defined benefit pension plans Domestic Plan [Member] Changes in inventories Increase (Decrease) in Inventories Supplier Finance Program Supplier Finance Program [Table Text Block] Reallocation Goodwill, Reallocation Due To Change In Reportable Segments Goodwill, Reallocation Due To Change In Reportable Segments Other non-current assets Other Noncurrent Assets, Before Depreciation Other Noncurrent Assets, Before Depreciation Other non-current accrued liabilities Other Noncurrent Liabilities [Member] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Equity Awards Adjustments Equity Awards Adjustments [Member] Net Cash – Financing activities Net Cash Provided by (Used in) Financing Activities Underlying Securities Award Underlying Securities Amount Defined Benefit Plans And Other Postretirement Benefit Plans Disclosures [Table] Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table] Performance share units Performance Shares [Member] Maximum leverage ratio, before acquisition Debt Instrument, Covenant, Maximum Leverage Ratio, Four Consecutive Quarters Before Additional Material Acquisition Debt Instrument, Covenant, Maximum Leverage Ratio, Four Consecutive Quarters Before Additional Material Acquisition Credit Facility [Axis] Credit Facility [Axis] Return on Invested Capital Performance-Based Shares Return on Invested Capital Performance-Based Shares [Member] Return on Invested Capital Performance-Based Shares [Member] Amendment Flag Amendment Flag Long-term debt, fair value Long-Term Debt, Fair Value Entity Registrant Name Entity Registrant Name Weighted-average fair value / share (in usd per share) Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Fair Value Share based compensation arrangement by share based payment award fair value assumptions weighted average fair value. Receivables(a) Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables Components of restructuring and asset impairment charges Schedule of Components of Restructuring and Asset Impairment Charges [Table Text Block] Schedule of Components of Restructuring and Asset Impairment Charges [Table Text Block] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Depreciation and amortization Depreciation, Depletion and Amortization Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Revenue, Initial Application Period Cumulative Effect Transition [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Gross profit Gross Profit Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Changes in product warranty accrual Schedule of Product Warranty Liability [Table Text Block] Fair Value as of Grant Date Award Grant Date Fair Value Aggregate intrinsic value, vested and expected to vest Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Credit Facilities and Debt Debt Disclosure [Text Block] Collateral Held [Axis] Collateral Held [Axis] Geographical [Domain] Geographical [Domain] Liabilities held for sale Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Liabilities Held-For-Sale Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Liabilities Held-For-Sale Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Face amount Debt Instrument, Face Amount Other Other Geographical Regions [Member] Other Geographical Regions [Member] Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Proprietary technology and patents Technology-Based Intangible Assets [Member] Short-term debt issued, net Proceeds from Short-Term Debt Restructuring and asset impairment charges Restructuring and Asset Impairment Losses Restructuring and Asset Impairment Losses Entity Address, Postal Zip Code Entity Address, Postal Zip Code Interest Rate Swap Interest Rate Swap [Member] Schedule of Restructuring and Related Costs [Table] Restructuring Cost [Table] Restatement Determination Date: Restatement Determination Date [Axis] Title of 12(b) Security Title of 12(b) Security Authorized 750.0 shares, issued 259.1 shares and 257.6 shares in 2024 and 2023, respectively Common Stock, Value, Issued Opening balance from the acquisition of Evoqua Contract with Customer, Liability, Increase (Decrease) for Contract Acquired in Business Combination Net change in derivative hedge agreements: Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax [Abstract] Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Other postretirement benefit expense Other Postretirement Benefits Cost (Reversal of Cost) Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Stock Issued During Period, Shares, Acquisitions Stock Issued During Period, Shares, Acquisitions Other, net Payments for (Proceeds from) Other Investing Activities Other non-current assets Other Noncurrent Assets [Member] Credit Facilities and Long-Term Debt : Long-Term Debt, by Current and Noncurrent [Abstract] Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Finite-Lived Intangible Assets Finite-Lived Intangible Assets [Line Items] Performance-based shares valuation assumptions Schedule of Share-based Payment Award, Equity Instruments Other than Options, Valuation Assumptions [Table Text Block] Schedule of Share-based Payment Award, Equity Instruments Other than Options, Valuation Assumptions [Table Text Block] Forfeited (in usd per share) Forfeited Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Net losses expected to be reclassified in next 12 months Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months Accrued and other current liabilities Other Current Liabilities [Member] Impairment of intangible assets Impairment of Intangible Assets (Excluding Goodwill) Securitization Facility due 2024 Loan, Securitized or Asset-Backed Financing Arrangement, Principal Outstanding Financing Activities Net Cash Provided by (Used in) Financing Activities [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Cash received from investments Proceeds from Sale, Maturity and Collection of Investments Summary of the changes in outstanding stock options Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] ING Bank Term Loan Facility ING Bank Term Loan Facility [Member] ING Bank Term Loan Facility Basic (usd per share) Basic earnings per share (usd per share) Earnings Per Share, Basic Changes in accounts payable Increase (Decrease) in Accounts Payable Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Equity Option Equity Option [Member] Euro Commercial Paper Program Euro Commercial Paper Program [Member] Euro Commercial Paper Program [Member] Ownership [Domain] Ownership [Domain] Trademarks Trademarks Trademarks [Member] Maximum permitted increases in Credit Facility borrowing base Line of Credit Facility, Increases in Maximum Borrowing Capacity, Total Line of Credit Facility, Increases in Maximum Borrowing Capacity, Total Customer-related liabilities Customer Related Liabilities Current Customer related liabilities current. Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Amortization Amortization Derivatives designated as hedging instruments Designated as Hedging Instrument [Member] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Green Bond Green Bond [Member] Green Bond Total current liabilities Liabilities, Current Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Weighted average number of shares: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Unamortized compensation expense Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount Total assets Assets Amount of (gain) loss reclassified from OCI into cost of revenue Cost of Goods and Services Sold Income tax benefit on unrealized gain on derivative hedge agreements Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax Granted (in shares) Shares Awarded (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Warranties Movement in Standard Product Warranty Accrual [Roll Forward] Capital Stock Treasury Stock [Text Block] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Revenue, Initial Application Period Cumulative Effect Transition [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Commitments and contingencies (Note 18) Commitments and Contingencies Buy PLN Sell EUR Buy PLN Sell EUR [Member] Buy PLN Sell EUR Proprietary technology and patents Proprietary and Patented Technology [Member] Proprietary and Patented Technology Termination Date Trading Arrangement Termination Date Total Amount of gain reclassified from OCI into revenue Revenues Revenues Short-term debt repaid Repayments of Short-Term Debt Analytics Electric [Member] Electric [Member] Share-Based Compensation Plans Share-Based Payment Arrangement [Text Block] Stock based compensation expense included within AOCL Restructuring Reserve, Share Based Compensation Restructuring Reserve, Share Based Compensation Entity Address, City or Town Entity Address, City or Town Long-term debt issued, net Proceeds from Issuance of Long-Term Debt Purchase Price Allocation Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Total Shareholder Return Performance-Based Shares Total Shareholder Return Performance-Based Shares [Member] Total Shareholder Return Performance-Based Shares [Member] Debt Instrument [Axis] Debt Instrument [Axis] Total intrinsic value of options exercised Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value Net income attributable to Xylem (in usd) Net Income (Loss) Attributable to Parent Trading Arrangement: Trading Arrangement [Axis] Revenue from contracts with customers Revenue from Contract with Customer, Including Assessed Tax Granted (in usd per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Accumulated Other Comprehensive Income (Loss) Comprehensive Income (Loss) Note [Text Block] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Forfeited (in shares) Forfeited Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Useful Life (in years) Acquired Finite-Lived Intangible Assets, Useful Life Acquired Finite-Lived Intangible Assets, Useful Life Business Acquisition [Axis] Business Acquisition [Axis] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Share Repurchase Programs Share Repurchase Plans [Member] Share Repurchase Plans [Member] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Entity File Number Entity File Number Revenue Revenue from Contract with Customer [Text Block] Document Fiscal Year Focus Document Fiscal Year Focus Non-Controlling Interest Noncontrolling Interest [Member] Income Statement [Abstract] Income Statement [Abstract] Entity Address, Address Line One Entity Address, Address Line One Repurchase of common stock Shares repurchased Treasury Stock, Value, Acquired, Cost Method Extinguishment of Debt, Amount Extinguishment of Debt, Amount Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Effect of exchange rate changes on cash Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Continuing Operations Shares Weighted Average Number of Shares Outstanding, Basic [Abstract] Severance and other charges Severance Costs Other accrued liabilities Other Accrued Liabilities, Current Restructuring Plan [Domain] Restructuring Plan [Domain] Name Forgone Recovery, Individual Name Aggregate intrinsic value, exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Document Period End Date Document Period End Date Finished goods Inventory, Finished Goods, Net of Reserves Other, net Other Noncash Income (Expense) Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Cross Currency Swaps Cross Currency Interest Rate Contract [Member] Outstanding, beginning of period (in shares) Outstanding, end of period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Insider Trading Arrangements [Line Items] Contract assets Contract with Customer, Asset, after Allowance for Credit Loss Regional selling locations Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member] Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Prepaid and other current assets Other Current Assets [Member] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Accounts payable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable Amortization of actuarial (gain) loss into net income Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax Cost of revenue Cost of Revenue Revenue recognized from opening balance Contract with Customer, Liability, Revenue Recognized Adjustment to Compensation: Adjustment to Compensation [Axis] US Dollar Commercial Paper Program US Dollar Commercial Paper Program [Member] US Dollar Commercial Paper Program [Member] Prepaid and other current assets Prepaid and other current assets Prepaid Expense and Other Assets, Current Tax on foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax Foreign Exchange Contract Foreign Exchange Contract [Member] Document Transition Report Document Transition Report Document Quarterly Report Document Quarterly Report Outstanding balance under supplier finance programs Purchase Obligation Financial information for each reportable segment Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract] Foreign currency and other Supplier Finance Program, Obligation, Period Increase (Decrease) Accrued and other current liabilities Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Accrued expenses and other liabilities Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Accrued expenses and other liabilities Accumulated other comprehensive loss Beginning balance Ending balance Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Current Reporting Status Entity Current Reporting Status Retained Earnings Retained Earnings [Member] Subsidiary, Ownership Percentage, Noncontrolling Owner Subsidiary, Ownership Percentage, Noncontrolling Owner Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Schedule of Earnings Per Share Basic and Diluted [Table] Schedule of Earnings Per Share Basic and Diluted [Table] Schedule of earnings per share basic and diluted. Estimated environmental matters Accrual for Environmental Loss Contingencies, Gross Basic (in shares) Weighted average common shares outstanding - Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Total equity Beginning balance Ending balance Equity, Including Portion Attributable to Noncontrolling Interest Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Property, plant and equipment, net Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Reclassification of unrealized gain (loss) on foreign exchange agreements Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Supplier Finance Program, Obligation [Roll Forward] Supplier Finance Program, Obligation [Roll Forward] Executive Category: Executive Category [Axis] Cash paid for investments Payments to Acquire Investments Name Awards Close in Time to MNPI Disclosures, Individual Name Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period Entity Filer Category Entity Filer Category Restructuring accruals - January 1 Restructuring accruals - June 30 Restructuring Reserve Remaining performance obligation Revenue, Remaining Performance Obligation, Amount Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Company Selected Measure Name Company Selected Measure Name Equipment Financing Equipment Financing [Member] Equipment Financing