Lease Commitments Lease Commitments - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash Paid for Lease Liabilities [Abstract]
Operating cash flows from operating leases	$ 459	$ 424	$ 434
Operating cash flows from finance leases	22	14	15
Financing cash flows from finance leases	83	52	105
Operating leases	528	441	304
Finance leases	$ 95	$ 192	$ 306