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