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Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2009
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| Goodwill and Intangible Assets Disclosure [Line Items] | |||
| Amortization expense of acquisition-related intangible assets | $ 441 | $ 314 | $ 266 |
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Patents and developed technology
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| Goodwill and Intangible Assets Disclosure [Line Items] | |||
| Intangible assets, weighted-average useful life (in years) | 5.0 | ||
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Customer relationships
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| Goodwill and Intangible Assets Disclosure [Line Items] | |||
| Intangible assets, weighted-average useful life (in years) | 6.1 | ||
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Trade names and other
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| Goodwill and Intangible Assets Disclosure [Line Items] | |||
| Intangible assets, weighted-average useful life (in years) | 4.3 | ||