Statements of Consolidated Stockholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Additional Capital Invested	Treasury Stock	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)
Balance (in shares) at Dec. 31, 2020		311,800,000
Balance at Dec. 31, 2020	$ 5,960	$ 4	$ 8,366	$ (3,897)	$ 2,626	$ (1,139)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(1,357)				(1,357)
Other comprehensive income (loss)	13					13
Stock-settled share-based compensation	32		32
Issuance of common stock (in shares)		11,000,000.0
Issuance of common stock	532		532
Warrants issued	47		47
Stock issued for share-based awards, net of shares withheld for tax (in shares)		800,000
Stock issued for share-based awards, net of shares withheld for tax	(21)		(54)	63	(30)
Balance (in shares) at Mar. 31, 2021		323,600,000
Balance at Mar. 31, 2021	$ 5,206	$ 4	8,923	(3,834)	1,239	(1,126)
Balance (in shares) at Dec. 31, 2021	323,810,825	323,800,000
Balance at Dec. 31, 2021	$ 5,029	$ 4	9,156	(3,814)	625	(942)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(1,377)				(1,377)
Other comprehensive income (loss)	5					5
Stock-settled share-based compensation	38		38
Stock issued for share-based awards, net of shares withheld for tax (in shares)		2,900,000
Stock issued for share-based awards, net of shares withheld for tax	$ (71)		(241)	262	(92)
Balance (in shares) at Mar. 31, 2022	326,728,861	326,700,000
Balance at Mar. 31, 2022	$ 3,624	$ 4	$ 8,953	$ (3,552)	$ (844)	$ (937)