| Cover Page | Aug. 02, 2023 |
| Cover [Abstract] | |
| Document Type | 8-K/A |
| Document Period End Date | Aug. 02, 2023 |
| Entity Registrant Name | XYLEM INC. |
| Entity Incorporation, State or Country Code | IN |
| Entity File Number | 001-35229 |
| Entity Tax Identification Number | 45-2080495 |
| Entity Address, City or Town | Washington |
| Entity Address, State or Province | DC |
| Entity Address, Postal Zip Code | 20003 |
| City Area Code | 202 |
| Local Phone Number | 869-9150 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001524472 |
| Amendment Flag | true |
| Amendment Description | On August 2, 2023, Xylem Inc., an Indiana corporation (the “Company”) furnished a Current Report on Form 8-K in connection with the issuance of a press release announcing its financial results for the quarter ended June 30, 2023 (the “Original Report”).This Amendment No. 1 is being furnished by the Company to provide certain financial statement line items that were included in the press release issued on August 2, 2023, but inadvertently omitted from Exhibit 99.1 to the Original Report. These items consist of detail for the sub-total of "Total current liabilities" within the Condensed Consolidated Balance Sheets and detail for the sub-totals of "Net Cash - Operating activities", Net Cash- Investing activities" and "Net Cash - Financing activities" within the Condensed Consolidated Statements of Cash Flows. |
| Entity Address, Address Line One | 301 Water Street SE |
| Title of 12(b) Security | Common Stock, par value $0.01 per share |
| Trading Symbol | XYL |
| Security Exchange Name | NYSE |
