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Restructuring and Asset Impairment Charges (Components of Restructuring Charges and Segment Allocation) (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Restructuring Cost and Reserve [Line Items]
Severance and other charges			$ 15	$ 10	$ 36
Asset impairment			0	1	18
Other restructuring charges			0	1	1
Reversal of restructuring accruals			0	(6)	(1)
Total restructuring costs			15	6	54
Asset impairment charges			14	1	21
Total restructuring and asset impairment charges			29	7	75
Water Infrastructure
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges			6	8	20
Applied Water
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges			4	2	4
Measurement & Control Solutions
Restructuring Cost and Reserve [Line Items]
Asset impairment charges	$ 11	$ 10
Restructuring and asset impairment charges			$ 19	$ (3)	$ 51