Summary of Significant Accounting Policies - Weighted Average Number of Common and Common Equivalent Shares Used in Calculation of Basic and Diluted Earnings Per Share (Details) - shares shares in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Weighted average shares outstanding:
Weighted average common shares outstanding (used in the calculation of basic earnings (loss) per share) (in shares)	763	764	764
Potential dilution from stock options and restricted stock and stock units (in shares)	2	0	0
Weighted average common and common equivalent shares (used in the calculation of diluted earnings (loss) per share) (in shares)	765	764	764
Antidilutive stock options excluded from the calculation of diluted earnings (loss) per share (in shares)	6	15	9