Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows - operating leases	$ 134	$ 131	$ 153
Operating cash flows - finance leases	31	17	23
Financing cash flows - finance leases	207	183	161
Right-of-use assets obtained in exchange for lease liabilities:
Operating leases	76	109	197
Finance leases	$ 279	$ 234	$ 231