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Goodwill and Other Intangible Assets Schedule of Other Intangible Assets by Major Class (Details) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2012
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Dec. 31, 2011
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|---|---|---|
| Summary of other intangible assets | ||
| Intangible assets not subject to amortization (primarily trademarks) | $ 1,296 | $ 451 |
| Intangible assets subject to amortization | ||
| Historical cost | 6,392 | 2,503 |
| Accumulated amortization | 909 | 762 |
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Customer Relationships [Member]
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| Intangible assets subject to amortization | ||
| Historical cost | 4,100 | 1,173 |
| Accumulated amortization | 428 | 322 |
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Patents and Technology [Member]
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| Intangible assets subject to amortization | ||
| Historical cost | 1,500 | 849 |
| Accumulated amortization | 325 | 308 |
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Finite Lived Intangible Assets, Other [Member]
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| Intangible assets subject to amortization | ||
| Historical cost | 792 | 481 |
| Accumulated amortization | $ 156 | $ 132 |