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Segments - Operating Segments (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Segment Reporting Information [Line Items]        
Total revenue $ 1,341 $ 1,384 $ 4,007 $ 4,763
Total operating profit (loss) (43) (74) (119) (2,124)
Operating Segments [Member] | Wellbore Technologies [Member]        
Segment Reporting Information [Line Items]        
Total revenue 507 361 1,383 1,494
Total operating profit (loss) 32 (50) 24 (780)
Operating Segments [Member] | Completion & Production Solutions [Member]        
Segment Reporting Information [Line Items]        
Total revenue 478 601 1,414 1,887
Total operating profit (loss) (26) 25 (49) (946)
Operating Segments [Member] | Rig Technologies [Member]        
Segment Reporting Information [Line Items]        
Total revenue 390 449 1,308 1,482
Total operating profit (loss) 1 (3) 42 (230)
Intersegment Eliminations [Member]        
Segment Reporting Information [Line Items]        
Total revenue (34) (27) (98) (100)
Total operating profit (loss) $ (50) $ (46) $ (136) $ (168)