New Accounting Pronouncements and Accounting Changes (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended	12 Months Ended
	Jan. 01, 2022	Dec. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Equity feature of convertible notes, net of issuance costs	$ 300				$ (392)
Stockholders' equity attributable to parent		$ 10,687	$ 10,687	$ 10,414	8,876	$ 9,832
Net income (loss)		220	$ (539)	$ (977)	$ 3,074
Diluted (in USD per share)			$ (0.87)	$ (1.61)	$ 5.44
Cumulative Effect, Period of Adoption, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholders' equity attributable to parent				$ (245)	$ 0
Accounting Standards Update 2020-06 | Cumulative Effect, Period of Adoption, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net income (loss)			$ 80
Diluted (in USD per share)			$ 0.16
Accounting Standards Update 2020-06 | Cumulative Effect, Period of Adoption, Adjustment | Convertible Notes
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Interest rate stated in the debt agreement (as a percent)	1.25%
Retained earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholders' equity attributable to parent		$ 16,261	$ 16,261	15,774	14,777	$ 17,945
Retained earnings | Cumulative Effect, Period of Adoption, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholders' equity attributable to parent				$ 55	$ 20