Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Operating lease right-of-use assets	$ 1,082	$ 1,233
Accounts payable and other current liabilities	322	325
Operating lease liabilities	554	680
Total operating lease liabilities	876	1,005
Property and equipment	346	352
Accumulated depreciation	(212)	(204)
Property and equipment, net	134	148
Long-term debt due within one year	22	24
Long-term debt	72	91
Total finance lease liabilities	$ 94	$ 115