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Property and Equipment, net (Schedule of Property and Equipment, Net) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 800	$ 905
Less: accumulated depreciation and amortization	(424)	(505)
Total property and equipment, net	376	400	$ 362
Data processing equipment and software
Property, Plant and Equipment [Line Items]
Total property and equipment	526	626
Furniture, equipment and leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 274	$ 279

X

- Definition

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

+ References

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- Definition

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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