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 aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

+ References

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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.

+ References

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No definition available.

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Section S99
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Other Financial Data - Components of Fixed Assets, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Fixed Assets, net
Fixed assets, gross	$ 2,381	$ 2,311
Less: Accumulated depreciation	1,616	1,546
Fixed assets, net	765	765
Depreciation expense including software amortization	229	242	$ 240
Software [Member]
Fixed Assets, net
Fixed assets, gross	1,095	1,020
Leasehold improvements [Member]
Fixed Assets, net
Fixed assets, gross	422	413
Computer equipment [Member]
Fixed Assets, net
Fixed assets, gross	358	347
Furniture, fixtures and equipment [Member]
Fixed Assets, net
Fixed assets, gross	315	313
Construction in progress [Member]
Fixed Assets, net
Fixed assets, gross	76	94
Other [Member]
Fixed Assets, net
Fixed assets, gross	$ 115	$ 124