Intangible Assets - Schedule of Intangible Assets by Major Class (Detail) - USD ($) $ in Millions |
Sep. 30, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Finite Lived Intangible Assets [Line Items] | ||
| Gross Book Value | $ 12,404 | $ 6,491 |
| Accumulated Amortization | 2,567 | 1,922 |
| Net Book Value | 9,837 | 4,569 |
| Customer Relationships | ||
| Finite Lived Intangible Assets [Line Items] | ||
| Gross Book Value | 4,879 | 2,489 |
| Accumulated Amortization | 806 | 645 |
| Net Book Value | 4,073 | 1,844 |
| Technology/Technical know-how | ||
| Finite Lived Intangible Assets [Line Items] | ||
| Gross Book Value | 3,614 | 1,864 |
| Accumulated Amortization | 778 | 653 |
| Net Book Value | 2,836 | 1,211 |
| Tradenames | ||
| Finite Lived Intangible Assets [Line Items] | ||
| Gross Book Value | 2,847 | 1,625 |
| Accumulated Amortization | 432 | 367 |
| Net Book Value | 2,415 | 1,258 |
| Other | ||
| Finite Lived Intangible Assets [Line Items] | ||
| Gross Book Value | 1,064 | 513 |
| Accumulated Amortization | 551 | 257 |
| Net Book Value | $ 513 | $ 256 |