Stock-Based Compensation - Compensation Expense (Details) - Executives - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
SGI Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
SGI awards	$ 58	$ 92
SGI Awards | Corporate general and administrative expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based liabilities paid	34	54	$ 67
Performance-based awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
SGI awards	29	15
Performance-based awards | Corporate general and administrative expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based liabilities paid	$ 21	$ 14	$ 1