Fixed Assets - Schedule of Fixed Assets (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 591	$ 524
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(272)	(254)
Property, Plant and Equipment, Net	319	270
Furniture Fixtures Equipment and Software
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	382	345
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	73	62
Land, Buildings and Improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 136	$ 117

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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