Segment Information - Geographical Data (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Geographic Data
Total revenues	$ 50,073	$ 48,712	$ 57,342
Long-lived assets	21,718	22,411
United States
Geographic Data
Total revenues	44,138	42,308	46,903
Long-lived assets	18,071	18,591
Canada
Geographic Data
Total revenues	5,935	6,404	$ 10,439
Long-lived assets	$ 3,647	$ 3,820