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Restructuring and Asset Impairment Charges (Restructuring Reserve Rollforward) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Restructuring Reserve [Roll Forward]      
Restructuring accruals $ 7 $ 29  
Severance and other 15 6 $ 54
Cash payments (11) (25) (36)
Asset impairment 0 (1) (18)
Foreign currency and other (1) (2)  
Restructuring accruals 10 7 $ 29
Water Infrastructure      
Restructuring Reserve [Roll Forward]      
Restructuring accruals 1    
Restructuring accruals 1 1  
Applied Water      
Restructuring Reserve [Roll Forward]      
Restructuring accruals 1    
Restructuring accruals 0 1  
Measurement & Control Solutions      
Restructuring Reserve [Roll Forward]      
Restructuring accruals 4    
Restructuring accruals 3 4  
Regional Selling Locations      
Restructuring Reserve [Roll Forward]      
Restructuring accruals [1] 1    
Restructuring accruals [1] 4 1  
Corporate and other      
Restructuring Reserve [Roll Forward]      
Restructuring accruals 0    
Restructuring accruals $ 2 $ 0  
[1] Regional selling locations consist primarily of selling and marketing organizations that incurred restructuring expense which was allocated to the segments. The liabilities associated with restructuring expense were not allocated to the segments.