Segment and Geographic Data (Assets by Segment (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Total assets for each reportable segment
Total assets	$ 8,276	$ 8,750	$ 7,710
Water Infrastructure
Total assets for each reportable segment
Total assets	1,289	1,255	1,268
Applied Water
Total assets for each reportable segment
Total assets	1,093	1,005	1,016
Measurement & Control Solutions
Total assets for each reportable segment
Total assets	3,198	3,345	3,497
Regional Selling Locations
Total assets for each reportable segment
Total assets	1,503	1,413	1,375
Corporate and other
Total assets for each reportable segment
Total assets	$ 1,193	$ 1,732	$ 554