Goodwill and Other Intangible Assets Schedule of Other Intangible Assets by Major Class (Details) - USD ($) $ in Millions |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Summary of other intangible assets | ||
| Intangible assets not subject to amortization - trademarks | $ 1,661 | $ 1,844 |
| Intangible assets subject to amortization | ||
| Historical cost | 6,207 | 6,251 |
| Accumulated amortization | 1,854 | 1,539 |
| Customer relationships [Member] | ||
| Intangible assets subject to amortization | ||
| Historical cost | 3,544 | 3,674 |
| Accumulated amortization | 1,010 | 834 |
| Patents and technology [Member] | ||
| Intangible assets subject to amortization | ||
| Historical cost | 1,447 | 1,494 |
| Accumulated amortization | 511 | 440 |
| Trademarks [Member] | ||
| Intangible assets subject to amortization | ||
| Historical cost | 1,113 | 980 |
| Accumulated amortization | 311 | 250 |
| Other [Member] | ||
| Intangible assets subject to amortization | ||
| Historical cost | 103 | 103 |
| Accumulated amortization | $ 22 | $ 15 |