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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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Property and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
Property and Equipment (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 668	$ 628
Accumulated depreciation and amortization	(483)	(448)
Property and equipment, net	185	180
Depreciation	45	48	$ 42
Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	239	230
Data processing equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	210	186
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	121	115
Buildings
Property, Plant and Equipment [Line Items]
Property and equipment, gross	79	78
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	14	14
Other
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 5	$ 5