Property and Equipment, Net - Components of Property and Equipment, Net (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	$ 5,031	$ 4,973
Less: accumulated depreciation	(2,814)	(2,765)
Projects in progress	196	151
Property and equipment, net	2,413	2,359
Capitalized software development
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	3,373	3,290
Computer equipment
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	170	202
Furniture and other equipment
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	115	113
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	1,227	1,222
Land
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	$ 146	$ 146