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Goodwill and Other Intangible Assets (Rollforward of Goodwill) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Changes in the carrying value of goodwill by operating segment
Beginning Balance		$ 2,792	$ 2,854
Goodwill, Impairment Loss		0	0	$ (58)
Foreign currency and other		(73)	(62)
Ending Balance		2,719	2,792	2,854
Water Infrastructure
Changes in the carrying value of goodwill by operating segment
Beginning Balance		656	668
Foreign currency and other		(18)	(12)
Ending Balance		638	656	668
Applied Water
Changes in the carrying value of goodwill by operating segment
Beginning Balance		515	529
Foreign currency and other		(13)	(14)
Ending Balance		502	515	529
Measurement & Control Solutions
Changes in the carrying value of goodwill by operating segment
Beginning Balance		1,621	1,657
Goodwill, Impairment Loss	$ (58)
Foreign currency and other		(42)	(36)
Ending Balance		$ 1,579	$ 1,621	$ 1,657

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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