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Intangible Assets (Narrative) (Details) (USD $)
In Millions, unless otherwise specified |
6 Months Ended | |
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Jun. 30, 2012
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Jun. 30, 2011
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| Goodwill and Intangible Assets Disclosure [Abstract] | ||
| Amortization expense for intangible assets with finite useful lives | $ 217 | $ 221 |
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- Definition
Aggregate amount of intangible asset amortization recognized as expense during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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