Description of Business, Accounting Policies, and Supplemental Disclosures - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Supplemental Cash Flow Information [Abstract]
Cash paid for interest on debt, net of capitalized interest	$ 1,858	$ 2,608	$ 1,561
Cash paid for operating leases	12,341	10,453	8,633
Cash paid for interest on finance leases	287	308	374
Cash paid for interest on financing obligations	219	196	207
Cash paid for income taxes, net of refunds	12,308	11,179	6,035
Assets acquired under operating leases	15,424	14,052	18,800
Property and equipment acquired under finance leases, net of remeasurements and modifications	854	642	675
Property and equipment recognized during the construction period of build-to-suit lease arrangements	97	357	3,187
Property and equipment derecognized after the construction period of build-to-suit lease arrangements, with the associated leases recognized as operating	$ 0	$ 1,374	$ 5,158