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Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Millions	3 Months Ended					9 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Jun. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Finite-Lived Intangible Assets
Amortization expense related to finite-lived intangible assets	$ 78			$ 73		$ 231	$ 229
Asset Impairment Charges	$ 0			$ 0		$ 8	$ 1
Measurement and Control Solutions
Finite-Lived Intangible Assets
Asset Impairment Charges		$ 2
Water Solutions and Services
Finite-Lived Intangible Assets
Asset Impairment Charges			$ 3		$ 13
Water Infrastructure
Finite-Lived Intangible Assets
Asset Impairment Charges			$ 1
Corporate Segment
Finite-Lived Intangible Assets
Asset Impairment Charges		$ 2

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets.

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