Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions	Total	Common Stock [Member]	Additional - Paid In Capital [Member]	Retained Earnings Deficit [Member]	NOV Net Investment [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning balance at Dec. 31, 2013	$ 1,802				$ 1,802
Net income (loss)	116			$ 58	58
Net transfers from NOV	75				75
Stock-based compensation	18		$ 13		5
Reclassification of NOV net investment to additional paid-in capital			1,940		$ (1,940)
Exercise of stock options, shares		14,000
Issuance of common stock at Separation, value			(1)
Issuance of common stock at the Separation, par value		$ 1
Issuance of common stock at Separation, shares		107,053,000
Other comprehensive loss	(45)					$ (45)
Ending balance at Dec. 31, 2014	1,966		1,952	58		(45)
Ending balance, Common stock value at Dec. 31, 2014		$ 1
Ending balance, shares at Dec. 31, 2014		107,067,000
Net income (loss)	(502)			(502)
Adjustment to income tax from spin-off	3		3
Stock-based compensation	27		27
Exercise of stock options, shares		15,000
Vesting of restricted stock, shares		200,000
Shares withheld for taxes	(2)		(2)
Shares withheld for taxes, shares		(63,000)
Other comprehensive loss	(89)					(89)
Ending balance at Dec. 31, 2015	1,403		1,980	(444)		(134)
Ending balance, Common stock value at Dec. 31, 2015	1	$ 1
Ending balance, shares at Dec. 31, 2015		107,219,000
Net income (loss)	(234)			(234)
Stock-based compensation	$ 23		23
Exercise of stock options, shares	20	20,000
Vesting of restricted stock, shares		341,000
Shares withheld for taxes	$ (1)		(1)
Shares withheld for taxes, shares		(105,000)
Other comprehensive loss	(8)					(8)
Ending balance at Dec. 31, 2016	1,183		$ 2,002	$ (678)		$ (142)
Ending balance, Common stock value at Dec. 31, 2016	$ 1	$ 1
Ending balance, shares at Dec. 31, 2016		107,475,000