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Segments - Operating Segments (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Segment Reporting Information [Line Items]        
Total revenue $ 1,417 $ 1,496 $ 2,666 $ 3,379
Total operating profit (loss) 12 (100) (76) (2,050)
Operating Segments [Member]        
Segment Reporting Information [Line Items]        
Total revenue 1,417      
Operating Segments [Member] | Wellbore Technologies [Member]        
Segment Reporting Information [Line Items]        
Total revenue 463 442 876 1,133
Total operating profit (loss) 6 (67) (8) (730)
Operating Segments [Member] | Completion & Production Solutions [Member]        
Segment Reporting Information [Line Items]        
Total revenue 497 611 936 1,286
Total operating profit (loss) (6) 42 (23) (971)
Operating Segments [Member] | Rig Technologies [Member]        
Segment Reporting Information [Line Items]        
Total revenue 487 476 918 1,033
Total operating profit (loss) 49 (25) 41 (227)
Intersegment Eliminations [Member]        
Segment Reporting Information [Line Items]        
Total revenue (30) (33) (64) (73)
Total operating profit (loss) $ (37) $ (50) $ (86) $ (122)