v3.25.2
Restructuring Charges - Estimated Restructuring Costs (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Sep. 30, 2024
Jun. 30, 2025
2024 Plan        
Restructuring Cost and Reserve [Line Items]        
Total expected costs       $ 77
Restructuring costs incurred during period $ 21 $ 16    
Total expected costs remaining       40
2023 Plan        
Restructuring Cost and Reserve [Line Items]        
Total expected costs       52
Restructuring costs incurred during period 1 1 $ 49  
Total expected costs remaining       1
Operating Segments | Water Infrastructure | 2024 Plan        
Restructuring Cost and Reserve [Line Items]        
Total expected costs       37
Restructuring costs incurred during period 8 12    
Total expected costs remaining       17
Operating Segments | Water Infrastructure | 2023 Plan        
Restructuring Cost and Reserve [Line Items]        
Total expected costs       15
Restructuring costs incurred during period 1 0 14  
Total expected costs remaining       0
Operating Segments | Applied Water | 2024 Plan        
Restructuring Cost and Reserve [Line Items]        
Total expected costs       23
Restructuring costs incurred during period 9 2    
Total expected costs remaining       12
Operating Segments | Applied Water | 2023 Plan        
Restructuring Cost and Reserve [Line Items]        
Total expected costs       6
Restructuring costs incurred during period 0 1 5  
Total expected costs remaining       0
Operating Segments | Measurement and Control Solutions | 2024 Plan        
Restructuring Cost and Reserve [Line Items]        
Total expected costs       8
Restructuring costs incurred during period 3 1    
Total expected costs remaining       4
Operating Segments | Measurement and Control Solutions | 2023 Plan        
Restructuring Cost and Reserve [Line Items]        
Total expected costs       1
Restructuring costs incurred during period 0 0 1  
Total expected costs remaining       0
Operating Segments | Water Solutions and Services | 2024 Plan        
Restructuring Cost and Reserve [Line Items]        
Total expected costs       5
Restructuring costs incurred during period 1 1    
Total expected costs remaining       3
Operating Segments | Water Solutions and Services | 2023 Plan        
Restructuring Cost and Reserve [Line Items]        
Total expected costs       29
Restructuring costs incurred during period 0 0 28  
Total expected costs remaining       1
Corporate and other | 2024 Plan        
Restructuring Cost and Reserve [Line Items]        
Total expected costs       4
Restructuring costs incurred during period 0 0    
Total expected costs remaining       4
Corporate and other | 2023 Plan        
Restructuring Cost and Reserve [Line Items]        
Total expected costs       1
Restructuring costs incurred during period $ 0 $ 0 $ 1  
Total expected costs remaining       $ 0