Entity tax identification number Entity Tax Identification Number Member directed investments at fair value: EBP, Investment, Fair Value Member rollovers EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Rollover Maximum Maximum [Member] Less: amounts deemed distributed for tax purposes, net EBP, Reconciliation to Form 5500, Change in Net Asset Available for Benefit, Increase (Decrease) from Deemed Distribution Legal Entity [Axis] Legal Entity [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] EBP, Description of Plan [Table] EBP, Description of Plan [Table] Mutual funds Mutual Fund [Member] Deemed distribution EBP, Reconciliation to Form 5500, Note Receivable, Deemed Distribution Investment, percent of future contributions that may be transferred if under 20% EBP, Investment, Percent Of Future Contributions That May Be Transferred If Under 20% Threshold EBP, Investment, Percent Of Future Contributions That May Be Transferred If Under 20% Threshold EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Related Party and Party-in-Interest Transactions [Table] Pretax, maximum annual compensation to total compensation, percentage, pre tax EBP, Participant Contribution, Pretax, Maximum Annual Compensation to Total Compensation, Percentage EBP, Fully Benefit-Responsive Investment Contract [Table] EBP, Fully Benefit-Responsive Investment Contract [Table] EBP, Rollover [Domain] EBP, Rollover [Domain] EBP, Rollover [Domain] Excise taxes EBP, Erroneous Payments, Excise Taxes EBP, Erroneous Payments, Excise Taxes Member directed brokerage account EBP, Self-Directed Brokerage Account [Member] Total deductions EBP, Change in Net Asset Available for Benefit, Decrease Maximum borrowing, amount EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount Fair Value Measurements EBP, Investment, Fair Value and NAV [Text Block] Minimum borrowing, amount EBP, Note Receivable from Participant, Account, Minimum Borrowing, Amount Accrued expenses EBP, Accrued Expense EBP, Fully Benefit-Responsive Investment Contract [Abstract] Missed earnings Net gain (or loss) on each transaction EBP, Erroneous Payments, Nonexempt Transactions, Including Plan Interest In Master Trust, Change In Net Asset Available For Benefit, Increase (Decrease) From Realized Gain (Loss) On Investment EBP, Erroneous Payments, Nonexempt Transactions, Including Plan Interest In Master Trust, Change In Net Asset Available For Benefit, Increase (Decrease) From Realized Gain (Loss) On Investment Investment cost EBP, Investment, Including Plan Interest in Master Trust, Cost EBP, Investment, Including Plan Interest in Master Trust, Cost Plan's Interest in Master Trust Balances EBP, Nonconsolidated, Plan Interest in Master Trust [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] EBP, Reconciliation of Financial Statement to Form 5500 EBP, Reconciliation of Financial Statement to Form 5500 [Table Text Block] Guaranteed Investment Contract EBP, Fully Benefit-Responsive Investment Contract [Text Block] EBP, Investment, Fair Value and NAV [Abstract] Total assets EBP, Asset ASSETS: EBP, Asset [Abstract] Statistical Measurement [Axis] Statistical Measurement [Axis] Additions to Net Assets Attributed to: EBP, Change in Net Asset Available for Benefit, Increase [Abstract] EBP, Statement of Change in Net Asset Available for Benefit [Table] EBP, Statement of Change in Net Asset Available for Benefit [Table] Participant compensation matched, minimum service period EBP, Requisite Service Period EBP, Requisite Service Period Distributions to Members EBP, Payment to Participant [Policy Text Block] EBP, Master Trust [Line Items] EBP, Master Trust [Line Items] Total liabilities EBP, Liability Annual Fixed Rate Contribution, More Than Or Equal To 50 Years Annual Fixed Rate Contribution, More Than Or Equal To 50 Years [Member] Annual Fixed Rate Contribution, More Than Or Equal To 50 Years Amendment Flag Amendment Flag Less: amounts deemed distributed for tax purposes EBP, Reconciliation to Form 5500, Net Asset Available for Benefit, Deemed Distribution Basis of Accounting EBP, Basis of Accounting [Policy Text Block] EBP, Schedule of Asset Held for Investment [Table] EBP, Schedule of Asset Held for Investment [Table] Total investments in Master Trust EBP, Investment, Plan Interest in Master Trust, Fair and Contract Value Investment, number of shares (in shares) EBP, Investment, Number of Shares EBP, Description of Plan and Accounting Change [Abstract] Receivables: EBP, Receivable [Abstract] EBP, Investment, Fair Value and NAV EBP, Investment, Fair Value and NAV [Table Text Block] Investments [Domain] Investments [Domain] EBP, Master Trust [Abstract] Catch-up contributions, after-tax, compensation, minimum EBP, Catch-Up Contributions, After-Tax, Compensation, FICA Threshold EBP, Catch-Up Contributions, After-Tax, Compensation, FICA Threshold Use of Estimates EBP, Use of Estimate [Policy Text Block] Eligibility, Expatriates On Temporary Assignment EBP, Eligibility, Expatriates On Temporary Assignment [Member] EBP, Eligibility, Expatriates On Temporary Assignment Selling price EBP, Nonexempt Transactions, Including Plan Interest In Master Trust, Selling Price EBP, Nonexempt Transactions, Including Plan Interest In Master Trust, Selling Price FORM 5500, SCHEDULE H, LINE 4i - SCHEDULE OF ASSETS EBP, Schedule of Asset Held for Investment [Text Block] Cover [Abstract] Employer EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash Account Balance Paid Out to Member Account Balance Paid Out to Member [Member] Account Balance Paid Out to Member Erroneous payments Cost of asset EBP, Erroneous Payments, Nonexempt Transactions, Including Plan Interest In Master Trust, Cost EBP, Erroneous Payments, Nonexempt Transactions, Including Plan Interest In Master Trust, Cost Minimum Minimum [Member] GIC transfer, non-competing investment option period, minimum EBP, GIC Transfer, Non-competing Investment Option Period, Minimum EBP, GIC Transfer, Non-competing Investment Option Period, Minimum Investment Type [Axis] Investment Type [Axis] INTEREST INCOME ON NOTES RECEIVABLE FROM MEMBERS EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant Nonexempt Transactions [Line Items] Nonexempt Transactions [Line Items] Nonexempt Transactions [Line Items] Total contributions EBP, Change in Net Asset Available for Benefit, Increase from Contribution Members EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Excluding Rollover Primary residence, borrowing term EBP, Note Receivable From Participant, Account, Primary Residence, Maximum Borrowing Term EBP, Note Receivable From Participant, Account, Primary Residence, Maximum Borrowing Term Plan's interest in the investment gain of The Xylem Inc. Retirement Savings Master Trust Net appreciation on company stock EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment Interest and Dividend income EBP, Change in Net Asset Available for Benefit, Increase from Interest and Dividend Income on Investment Employer contribution, fixed rate contribution, percentage EBP, Employer Contribution, Annual Fixed Rate Contribution, Percentage Fixed rate annual contribution for eligible participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). EBP, Description of Plan [Line Items] EBP, Description of Plan [Line Items] Plan number EBP, Plan Number Audit fees covered, maximum EBP, Expense, Audit Fees Covered, Maximum EBP, Expense, Audit Fees Covered, Maximum OTHER INCOME EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Other Investment Income (Loss) EBP, Investment, Fair Value and NAV [Line Items] EBP, Investment, Fair Value and NAV [Line Items] Description of The Plan EBP, Description of Plan [Text Block] EBP, Employer Contribution, Type [Domain] EBP, Employer Contribution, Type [Domain] EBP, Employer Contribution, Type [Domain] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Rollover [Axis] EBP, Rollover [Axis] EBP, Rollover EBP, Employer Contribution, Type [Axis] EBP, Employer Contribution, Type [Axis] EBP, Employer Contribution, Type EBP, Schedule of Asset Held for Investment [Line Items] EBP, Schedule of Asset Held for Investment [Line Items] Contributions Receivable EBP, Contribution [Policy Text Block] EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Domain] EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Domain] Loan origination fees EBP, Note Receivable From Participant, Loan Origination Fees EBP, Note Receivable From Participant, Loan Origination Fees Employer securities EBP, Employer, Common Stock [Member] EBP, Schedule of Asset Held for Investment [Abstract] EBP, Accounting Policy [Table] EBP, Accounting Policy [Table] Consecutive service periods EBP, Requisite Consecutive Service Periods EBP, Requisite Consecutive Service Periods INVESTMENT ACTIVITY: EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment [Abstract] Trustee and administrative expenses EBP, Change in Net Asset Available for Benefit, Decrease from Administrative Expense Member directed investments at contract value: EBP, Investment, Contract Value Risks and Uncertainties EBP, Risk and Uncertainty [Policy Text Block] Document Information [Line Items] Document Information [Line Items] Waiting period for new loans EBP, Note Receivable From Participant, Waiting Period For New Loans EBP, Note Receivable From Participant, Waiting Period For New Loans Note receivable from participant, maximum number of outstanding loans EBP, Note Receivable from Participant, Maximum Number Of Outstanding Loans EBP, Note Receivable from Participant, Maximum Number Of Outstanding Loans Master Trust EBP, Master Trust [Text Block] Realized gain on purchases and sales EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Realized Gain (Loss) on Investment Participant compensation matched, percentage EBP, Employer Contribution, Participant Compensation Matched, Percentage EBP, Statement of Change in Net Asset Available for Benefit [Abstract] Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Investment, percentage of total account balance, maximum EBP, Investment, Percentage Of Total Account Balance, Maximum EBP, Investment, Percentage Of Total Account Balance, Maximum Net income per Form 5500 EBP, Form 5500 Caption, Net Income (Loss) EBP, Fully Benefit-Responsive Investment Contract [Line Items] EBP, Fully Benefit-Responsive Investment Contract [Line Items] EBP, Tax Status [Table] EBP, Tax Status [Table] NET INCREASE IN ASSETS AVAILABLE FOR BENEFITS Increase in net assets available for benefits per the financial statements EBP, Change in Net Asset Available for Benefit, Increase (Decrease) Party-In-Interest Transactions EBP, Related Party and Party-in-Interest Transactions [Text Block] General loan, borrowing term EBP, Note Receivable From Participant, General Loan, Borrowing Term EBP, Note Receivable From Participant, General Loan, Borrowing Term Total investments in Master Trust EBP, Investment, Fair and Contract Value EBP, Related Party and Party-in-Interest Transactions [Abstract] EBP, Accounting Policy, Accounting Standard Update, and Change in Accounting Principle [Abstract] Total receivables EBP, Receivable Employer contributions EBP, Employer Contribution, Receivable Unrealized gain on investments held EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Unrealized Gain (Loss) on Investment Automatic deferral rate EBP, Participant Contribution, Automatic, Deferral Rate Dividends EBP, Change in Net Asset Available for Benefit, Increase from Dividend Income on Investment Distributions to Members EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant Investments at fair value EBP, Investment, Plan Interest in Master Trust, Fair Value EBP 001 EBP 001 [Member] EBP 001 Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] EBP, Eligibility [Axis] EBP, Eligibility [Axis] EBP, Eligibility Requisite service period, hours EBP, Requisite Service Period, Hours EBP, Requisite Service Period, Hours Eligibility Option One EBP, Eligibility Option One [Member] EBP, Eligibility Option One Current value of asset EBP, Nonexempt Transactions, Including Plan Interest In Master Trust, Current Value EBP, Nonexempt Transactions, Including Plan Interest In Master Trust, Current Value EBP, Statement of Net Asset Available for Benefit [Abstract] Note receivable from participant, maximum outstanding loan balance, prior period EBP, Note Receivable from Participant, Maximum Outstanding Loan Balance, Prior Period EBP, Note Receivable from Participant, Maximum Outstanding Loan Balance, Prior Period GIC, no market value adjustment, advance written notice, period EBP, GIC, No Market Value Adjustment, Advance Written Notice, Period EBP, GIC, No Market Value Adjustment, Advance Written Notice, Period IRA Established in Member's Name IRA Established in Member's Name [Member] IRA Established in Member's Name EBP, Accounting Policy [Line Items] EBP, Accounting Policy [Line Items] EBP, Tax Status [Abstract] EBP, Reconciliation of Financial Statement to Form 5500 [Table] EBP, Reconciliation of Financial Statement to Form 5500 [Table] EBP, Reconciliation of Financial Statement to Form 5500 [Line Items] EBP, Reconciliation of Financial Statement to Form 5500 [Line Items] Annual Fixed Rate Contribution, Less Than 50 Years Annual Fixed Rate Contribution, Less Than 50 Years [Member] Annual Fixed Rate Contribution, Less Than 50 Years Reconciliation of Financial Statements to Form 5500 EBP, Reconciliation of Financial Statement to Form 5500 [Text Block] Rollover, account balance EBP, Rollover, Account Balance Limit EBP, Rollover, Account Balance Limit Current value EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution Investment, percent change in future contributions and investments, daily EBP, Investment, Percent Change In Future Contributions And Investments, Daily EBP, Investment, Percent Change In Future Contributions And Investments, Daily Investment Valuation and Income Recognition EBP, Investment [Policy Text Block] EBP, Master Trust [Table] EBP, Master Trust [Table] Member contributions EBP, Participant Contribution, Receivable Minimum annual compensation to total compensation, percentage, after tax EBP, Participant Contribution, After Tax, Minimum Annual Contribution to Eligible Compensation, Percentage EBP, Participant Contribution, After Tax, Minimum Annual Contribution to Eligible Compensation, Percentage Eligibility Option Two EBP, Eligibility Option Two [Member] EBP, Eligibility Option Two Document Type Document Type Plan Termination EBP, Plan Termination [Text Block] Entity Central Index Key Entity Central Index Key Eligible rollover distribution, number of plans, maximum EBP, Eligible Rollover Distribution, Number Of Plans, Maximum EBP, Eligible Rollover Distribution, Number Of Plans, Maximum Participant loan, interest rate EBP, Asset Held for Investment, Participant Loan, Interest Rate EBP, Reconciliation of Financial Statement to Form 5500 [Abstract] Collective trusts Common/collective trusts Common Collective Trust [Member] NET ASSETS AVAILABLE FOR BENEFITS: EBP, Net Asset Available for Benefit [Abstract] EBP, Tax Status [Line Items] EBP, Tax Status [Line Items] EBP, Subsequent Event [Table] EBP, Subsequent Event [Table] DEDUCTIONS: EBP, Change in Net Asset Available for Benefit, Decrease [Abstract] Notes receivable from Members EBP, Note Receivable from Participant Master Trust Balances EBP, Nonconsolidated, Master Trust [Member] Employer contribution vesting percentage, dividends EBP, Employer Contribution Vesting Percentage, Dividends EBP, Employer Contribution Vesting Percentage, Dividends Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] FORM 5500, SCHEDULE G, PART III - NONEXEMPT TRANSACTIONS EBP, Nonexempt Transaction [Table Text Block] EBP, Nonexempt Transaction Summary of Significant Accounting Policies EBP, Summary of Accounting Policy [Text Block] Entity Registrant Name Entity Registrant Name EBP, Master Trust EBP, Master Trust [Table Text Block] Loan settlement limit EBP, Note Receivable From Participant, Loan Settlement Limit EBP, Note Receivable From Participant, Loan Settlement Limit EBP, Subsequent Event [Abstract] LIABILITIES: EBP, Liability [Abstract] Administrative expense, interest in master trust, percent EBP, Administrative Expense, Interest In Master Trust, Percent EBP, Administrative Expense, Interest In Master Trust, Percent Subsequent Events EBP, Subsequent Event [Text Block] Federal Income Tax Status EBP, Tax Status [Text Block] Maximum borrowing, to total account, percentage EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage Employee vesting percentage EBP, Employee Vested Percentage EBP, Employee Vested Percentage Rollover, election period EBP, Rollover, Election Period EBP, Rollover, Election Period EBP, Subsequent Event [Line Items] EBP, Subsequent Event [Line Items] Document Information [Table] Document Information [Table] Minimum annual compensation to total compensation, percentage, pre tax EBP, Participant Contribution, Pretax, Minimum Annual Compensation to Total Compensation, Percentage EBP, Participant Contribution, Pretax, Minimum Annual Compensation to Total Compensation, Percentage Maximum annual compensation to total compensation, percentage, after tax EBP, Participant Contribution, After Tax, Maximum Annual Contribution to Eligible Compensation, Percentage EBP, Participant Contribution, After Tax, Maximum Annual Contribution to Eligible Compensation, Percentage Notes Receivable from Members EBP, Note Receivable from Participant [Policy Text Block] Nonexempt Transactions [Table] Nonexempt Transactions [Table] Nonexempt Transactions [Table] Plan's interest in the investment gain of The Xylem Inc. Retirement Savings Master Trust Plan's interest in the investment gain of The Xylem Inc. Retirement Savings Master Trust EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment Nonexempt Transactions [Abstract] Nonexempt Transactions EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Axis] EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Axis] EBP, Eligibility [Domain] EBP, Eligibility [Domain] EBP, Eligibility [Domain] EBP, Related Party and Party-in-Interest Transactions [Line Items] EBP, Related Party and Party-in-Interest Transactions [Line Items] Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] NET ASSETS AVAILABLE FOR BENEFITS Beginning of year End of year Net assets available for benefits per the financial statements EBP, Net Asset Available for Benefit Entity [Domain] Entity [Domain] CONTRIBUTIONS: EBP, Change in Net Asset Available for Benefit, Increase from Contribution [Abstract] Matching percentage EBP, Employer Contribution, Matching Percentage Net assets available for benefits per Form 5500 EBP, Form 5500 Caption, Net Assets NAV Fair Value Measured at Net Asset Value Per Share [Member] EBP, Investment, Fair Value and NAV [Table] EBP, Investment, Fair Value and NAV [Table] EBP, Statement of Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Line Items]