Segment Information - Schedule of Revenues and Other Assets by Geographic Area (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Revenues	$ 46,802	$ 54,450	$ 52,157
Real Estate and Other Fixed Assets, Net of Accumulated Depreciation	1,378	1,593	1,840
North America
Segment Reporting Information [Line Items]
Revenues	33,565	39,618	37,324
Real Estate and Other Fixed Assets, Net of Accumulated Depreciation	1,006	1,206	1,230
International
Segment Reporting Information [Line Items]
Revenues	13,237	14,832	14,833
Real Estate and Other Fixed Assets, Net of Accumulated Depreciation	$ 372	$ 387	$ 610