Income (loss) and Dividends per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	2	4	7
Net income (loss)	$ 3,612	$ 946	$ (1,451)
Weighted average common shares outstanding (in shares)	685	787	792
Effect of dilutive securities (in shares)	2	1	0
Weighted average common shares, diluted (in shares)	687	788	792
Net income (loss) per share:
Basic (in dollars per share)	$ 5.27	$ 1.20	$ (1.83)
Diluted (in dollars per share)	5.26	1.20	(1.83)
Dividends paid (in dollars per share)	$ 0.32	$ 0.18	$ 0.08