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Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Oct. 02, 2016 | Sep. 27, 2015 | Oct. 02, 2016 | Sep. 27, 2015 | Jan. 03, 2016
Derivative [Line Items] |  |  |  |  |
Foreign currency translation | $ (94) | $ (1,069) | $ 490 | $ (2,729) |
Accumulated other comprehensive income on derivatives, after tax | 364 |  | $ 364 |  | $ 36
Reclassification of foreign exchange contracts into earnings, period |  |  | next 12 months |  |
Maximum length of time for hedge exposure |  |  | 18 months |  |
Other income/(expense), net, related to foreign exchange contracts, non hedging | $ 35 | $ (8) | $ (6) | $ 32 |
Weighted average interest rate on non-current debt | 3.14% |  | 3.14% |  |
Excess of the estimated fair value over the carrying value of debt |  |  |  |  | $ 1,700
Foreign exchange contracts |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative notional amounts outstanding | $ 35,000 |  | $ 35,000 |  |
Cross currency interest rate swaps |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative notional amounts outstanding | 2,300 |  | 2,300 |  |
Interest Rate Contract |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative notional amounts outstanding | 2,200 |  | 2,200 |  |
Equity Contract |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative notional amounts outstanding | $ 400 |  | 400 |  |
Other Comprehensive Income (Loss) [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Foreign currency translation |  |  | $ 76 |  |

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