Business Segments - Business Segments (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Total revenue	$ 2,154	$ 1,835	$ 6,055	$ 5,335
Total operating profit (loss)	$ 73	$ (7)	$ 124	$ (166)
Percentage as of operating profit (loss) to revenue	3.40%	(0.40%)	2.00%	(3.10%)
Operating Segments [Member] \| Wellbore Technologies [Member]
Segment Reporting Information [Line Items]
Total revenue	$ 847	$ 693	$ 2,351	$ 1,862
Total operating profit (loss)	$ 40		$ 90	$ (81)
Percentage as of operating profit (loss) to revenue	4.70%	0.00%	3.80%	(4.40%)
Operating Segments [Member] \| Completion & Production Solutions [Member]
Segment Reporting Information [Line Items]
Total revenue	$ 735	$ 682	$ 2,143	$ 1,982
Total operating profit (loss)	$ 46	$ 44	$ 102	$ 79
Percentage as of operating profit (loss) to revenue	6.30%	6.50%	4.80%	4.00%
Operating Segments [Member] \| Rig Technologies [Member]
Segment Reporting Information [Line Items]
Total revenue	$ 637	$ 510	$ 1,771	$ 1,638
Total operating profit (loss)	$ 58	$ 18	$ 138	$ 37
Percentage as of operating profit (loss) to revenue	9.10%	3.50%	7.80%	2.30%
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Total revenue	$ (65)	$ (50)	$ (210)	$ (147)
Total operating profit (loss)	$ (71)	$ (69)	$ (206)	$ (201)