Restructuring Charges (Accrual Rollfoward) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Restructuring Reserve [Roll Forward]
Restructuring accruals - January 1				$ 24	$ 10
Restructuring costs, net		$ 4	$ 20	36	54
Cash payments				(24)	(12)
Asset impairment				(19)	(3)
Stock based compensation expense included within AOCL				(2)	(25)
Foreign currency and other				0	3
Restructuring accruals - September 30		15	27	15	27
Regional selling locations
Restructuring Reserve [Roll Forward]
Restructuring accruals - September 30		3	3	3	3
Corporate and other
Restructuring Reserve [Roll Forward]
Restructuring costs, net		0	11	2	33
Restructuring accruals - September 30		1	9	1	9
Water Infrastructure | Operating Segments
Restructuring Reserve [Roll Forward]
Restructuring costs, net		3	0	9	3
Restructuring accruals - September 30		4	3	4	3
Applied Water | Operating Segments
Restructuring Reserve [Roll Forward]
Restructuring costs, net		1	5	2	6
Restructuring accruals - September 30		0	1	0	1
Measurement and Control Solutions | Operating Segments
Restructuring Reserve [Roll Forward]
Restructuring costs, net		(3)	4	(3)	10
Restructuring accruals - September 30		3	7	3	7
Water Solutions and Services | Operating Segments
Restructuring Reserve [Roll Forward]
Restructuring costs, net		3	1	27	5
Restructuring accruals - September 30	[1]	$ 4	$ 4	$ 4	$ 4

[1] Regional selling locations consist primarily of selling and marketing organizations and related support services that incurred restructuring expense that was allocated to the segments. The liabilities associated with restructuring expense were not allocated to the segments.