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Segments - Business Segments (Parenthetical) (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Segment Reporting Information [Line Items]        
Other items $ 19 $ (118) $ 32 $ (121)
Cost of Revenue [Member]        
Segment Reporting Information [Line Items]        
Other items 15 (118) 23 (121)
Selling, General and Administrative [Member]        
Segment Reporting Information [Line Items]        
Other items 4   9  
Severance and Other Restructuring Costs [Member] | Cost of Revenue [Member]        
Segment Reporting Information [Line Items]        
Other items 15   23  
Energy Products and Services [Member]        
Segment Reporting Information [Line Items]        
Other items 6 1 11 1
Energy Products and Services [Member] | Cost of Revenue [Member]        
Segment Reporting Information [Line Items]        
Other items 6 1 10 1
Energy Products and Services [Member] | Selling, General and Administrative [Member]        
Segment Reporting Information [Line Items]        
Other items     1  
Energy Equipment [Member]        
Segment Reporting Information [Line Items]        
Other items 9 (119) 12 (123)
Energy Equipment [Member] | Cost of Revenue [Member]        
Segment Reporting Information [Line Items]        
Other items 9 $ (119) 12 (123)
Corporate [Member]        
Segment Reporting Information [Line Items]        
Other items 4   9 1
Corporate [Member] | Cost of Revenue [Member]        
Segment Reporting Information [Line Items]        
Other items     1 $ 1
Corporate [Member] | Selling, General and Administrative [Member]        
Segment Reporting Information [Line Items]        
Other items $ 4   $ 8