Leases - Lease Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Lease, Cost [Abstract]
Operating lease cost	$ 8,847	$ 7,199	$ 5,019
Finance lease cost:
Amortization of lease assets	6,097	9,857	8,452
Interest on lease liabilities	361	473	617
Finance lease cost	6,458	10,330	9,069
Variable lease cost	1,852	1,556	1,238
Total lease cost	$ 17,157	$ 19,085	$ 15,326