Net Income (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted Average Number of Shares Outstanding	535,400	526,500	550,600
Weighted Average Number of Fully Vested Restricted Stock Units and Performance Share Units Outstanding	1,600	1,600	1,000
Weighted Average Number of Shares Outstanding, Basic	537,000	528,100	551,600
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	0	1,900	0
Weighted Average Number of Shares Outstanding, Diluted	537,000	530,000	551,600
Net Income (Loss) Available to Common Stockholders, Basic	$ (1,295)	$ 649	$ (362)
Earnings Per Share, Basic	$ (2.41)	$ 1.23	$ (0.66)
Earnings Per Share, Diluted	$ (2.41)	$ 1.22	$ (0.66)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	1,100		1,100