Property Plant and Equipment Net (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Property Plant And Equipment [Line Items]
Cost	$ 3,689	$ 3,153
Accumulated amortization	2,225	2,033
Total property and equipment	1,464	1,120
Internal-use software [Member]
Property Plant And Equipment [Line Items]
Cost	1,942	1,738
Accumulated amortization	1,307	1,191
Total property and equipment	635	547
Other property and equipment [Member]
Property Plant And Equipment [Line Items]
Cost	1,747	1,415
Accumulated amortization	918	842
Total property and equipment	829	573
Assets Recorded under Capital Leases [Member]
Property Plant And Equipment [Line Items]
Cost	306
Accumulated amortization	16
Total property and equipment	$ 290

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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Gross amount of long-lived 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, furniture and fixtures, and computer equipment.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived 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, furniture and fixtures, and computer equipment.

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