Business Segments - Business Segments (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Segment Reporting Information [Line Items]
Total revenue	$ 2,106	$ 1,759	$ 3,901	$ 3,500
Total operating profit (loss)	$ 52	$ (62)	$ 51	$ (159)
Percentage as of operating profit (loss) to revenue	2.50%	(3.50%)	1.30%	(4.50%)
Operating Segments [Member] \| Wellbore Technologies [Member]
Segment Reporting Information [Line Items]
Total revenue	$ 793	$ 614	$ 1,504	$ 1,169
Total operating profit (loss)	$ 38	$ (24)	$ 50	$ (81)
Percentage as of operating profit (loss) to revenue	4.80%	(3.90%)	3.30%	(6.90%)
Operating Segments [Member] \| Completion & Production Solutions [Member]
Segment Reporting Information [Line Items]
Total revenue	$ 738	$ 652	$ 1,408	$ 1,300
Total operating profit (loss)	$ 40	$ 27	$ 56	$ 35
Percentage as of operating profit (loss) to revenue	5.40%	4.10%	4.00%	2.70%
Operating Segments [Member] \| Rig Technologies [Member]
Segment Reporting Information [Line Items]
Total revenue	$ 651	$ 546	$ 1,134	$ 1,128
Total operating profit (loss)	$ 62	$ 6	$ 80	$ 19
Percentage as of operating profit (loss) to revenue	9.50%	1.10%	7.10%	1.70%
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Total revenue	$ (76)	$ (53)	$ (145)	$ (97)
Total operating profit (loss)	$ (88)	$ (71)	$ (135)	$ (132)