Leases - Schedule of Supplemental Cash Flow (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows for operating leases	$ 1,654	$ 1,406	$ 1,208
Operating cash flows for finance leases	16	15	14
Financing cash flows for finance leases	850	677	604
Lease liabilities arising from obtaining right-of-use assets:
Operating leases	4,366	4,466	1,158
Finance leases	$ 223	$ 160	$ 121