Goodwill and Intangible Assets (Schedules for Amortization Expense) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Finite Lived Intangible Assets
Amortization expense for acquired intangible assets	$ 57	$ 60	$ 114	$ 120
Expected amortization expense for acquired intangible assets recorded as of balance sheet date
Remainder of 2014	109		109
2015	206		206
2016	193		193
2017	177		177
2018	160		160
2019	148		148
After 2019	$ 481		$ 481

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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