Property and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 5,170	$ 5,476
Less: Accumulated depreciation	3,504	3,714
Property and equipment, net	1,666	1,762
Depreciation expense	383	337	$ 344
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	373	371
Buildings
Property, Plant and Equipment [Line Items]
Property and equipment, gross	881	863
Equipment and other
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 3,916	$ 4,242