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 income (loss)	(1,791)				(1,791)
Other comprehensive income (loss)	25					25
Stock-settled share-based compensation	100		100
Issuance of common stock (in shares)		11,000,000.0
Issuance of common stock	532		532
Warrants issued	99		99
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)		(55)	65	(31)
Balance (in shares) at Jun. 30, 2021		323,600,000
Balance at Jun. 30, 2021	4,904	$ 4	9,042	(3,832)	804	(1,114)
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)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(434)				(434)
Other comprehensive income (loss)	12					12
Stock-settled share-based compensation	68		68
Warrants issued	52		52
Stock issued for share-based awards, net of shares withheld for tax (in shares)		0
Stock issued for share-based awards, net of shares withheld for tax	0		(1)	2	(1)
Balance (in shares) at Jun. 30, 2021		323,600,000
Balance at Jun. 30, 2021	$ 4,904	$ 4	9,042	(3,832)	804	(1,114)
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 income (loss)	(1,048)				(1,048)
Other comprehensive income (loss)	(2)					(2)
Stock-settled share-based compensation	55		55
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	$ (70)		(241)	263	(92)
Balance (in shares) at Jun. 30, 2022	326,744,101	326,700,000
Balance at Jun. 30, 2022	$ 3,964	$ 4	8,970	(3,551)	(515)	(944)
Balance (in shares) at Mar. 31, 2022		326,700,000
Balance at Mar. 31, 2022	3,624	$ 4	8,953	(3,552)	(844)	(937)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	329				329
Other comprehensive income (loss)	(7)					(7)
Stock-settled share-based compensation	17		17
Stock issued for share-based awards, net of shares withheld for tax (in shares)		0
Stock issued for share-based awards, net of shares withheld for tax	$ 1		0	1	0
Balance (in shares) at Jun. 30, 2022	326,744,101	326,700,000
Balance at Jun. 30, 2022	$ 3,964	$ 4	$ 8,970	$ (3,551)	$ (515)	$ (944)