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Goodwill and Other Intangible Assets (Tables) | 9 Months Ended
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Sep. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract] |
Changes in the carrying value of goodwill by operating segment | Changes in the carrying value of goodwill by reportable segment for the nine months ended September 30, 2025 are as follows:
(in millions) | Water Infrastructure |  | Applied Water |  | Measurement and Control Solutions |  | Water Solutions and Services |  |  |  | Total |  |
Balance as of January 1, 2025 | $ | 2,098 |  |  | $ | 884 |  |  | $ | 2,163 |  |  | $ | 2,835 |  |  |  |  | $ | 7,980 |  |  |
Activity in 2025 |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions | 76 |  |  | — |  |  | — |  |  | 4 |  |  |  |  | 80 |  |  |
Reclassification to assets held for sale (a) | — |  |  | — |  |  | (23) |  |  | — |  |  |  |  | (23) |  |  |
Foreign currency and other | 83 |  |  | 20 |  |  | 123 |  |  | 17 |  |  |  |  | 243 |  |  |
Balance as of September 30, 2025 | $ | 2,257 |  |  | $ | 904 |  |  | $ | 2,263 |  |  | $ | 2,856 |  |  |  |  | $ | 8,280 |  |  |
Other Intangible Assets | Information regarding our other intangible assets is as follows:
| September 30, 2025 |  | December 31, 2024
(in millions) | Carrying Amount |  | Accumulated Amortization |  | Net Intangibles |  | Carrying Amount |  | Accumulated Amortization |  | Net Intangibles
Customer and distributor relationships | $ | 2,190 |  |  | $ | (676) |  |  | $ | 1,514 |  |  | $ | 2,151 |  |  | $ | (576) |  |  | $ | 1,575 |
Proprietary technology and patents | 432 |  |  | (176) |  |  | 256 |  |  | 360 |  |  | (138) |  |  | 222 |
Trademarks | 178 |  |  | (117) |  |  | 61 |  |  | 182 |  |  | (107) |  |  | 75 |
Software | 640 |  |  | (423) |  |  | 217 |  |  | 595 |  |  | (367) |  |  | 228 |
Other | 204 |  |  | (101) |  |  | 103 |  |  | 194 |  |  | (79) |  |  | 115 |
Indefinite-lived intangibles | 168 |  |  | — |  |  | 168 |  |  | 164 |  |  | — |  |  | 164 |
Other Intangibles | $ | 3,812 |  |  | $ | (1,493) |  |  | $ | 2,319 |  |  | $ | 3,646 |  |  | $ | (1,267) |  |  | $ | 2,379 |

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