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Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended		15 Months Ended
	Jul. 02, 2017	Jan. 01, 2017	Jul. 03, 2016	Jul. 02, 2017	Jul. 03, 2016	Jul. 02, 2017
Derivative [Line Items]
Foreign currency translation	$ 843		$ (295)	$ 1,238	$ 584
Accumulated other comprehensive income on derivatives, after tax	(36)			$ (36)		$ (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	$ 63		$ (36)	$ 34	$ (41)
Excess fair value over carrying value of cash and cash equivalents		$ 200
Weighted average interest rate on non-current debt	3.27%			3.27%		3.27%
Excess of the estimated fair value over the carrying value of debt		1,600
Foreign exchange contracts
Derivative [Line Items]
Collateral Already Posted, Aggregate Fair Value	$ 20			$ 20		$ 20
Derivative notional amounts outstanding	35,800	36,000		35,800		35,800
Cross currency interest rate swaps
Derivative [Line Items]
Derivative notional amounts outstanding	2,300	2,300		2,300		2,300
Interest Rate Contract
Derivative [Line Items]
Derivative notional amounts outstanding	1,800	1,800		1,800		1,800
Equity Contract
Derivative [Line Items]
Derivative notional amounts outstanding	200	$ 300		200		200
Other Comprehensive Income (Loss) [Member]
Derivative [Line Items]
Foreign currency translation	$ (268)			$ (378)		$ (3)

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- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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Excess Fair Value Over Carrying Value, Cash and Cash Equivalents, Fair Value Disclosure

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Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features.

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Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments.

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