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

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Amount of equity securities categorized neither as held-to-maturity nor as trading.

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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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Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions	3 Months Ended			24 Months Ended
	Apr. 01, 2018	Apr. 02, 2017	Jan. 01, 2017	Apr. 01, 2018	Jan. 01, 2018	Dec. 31, 2017
Derivative [Line Items]
Available-for-sale Securities, Equity Securities	$ 731			$ 731		$ 751
Foreign currency translation	623	$ 395
Accumulated other comprehensive income on derivatives, after tax	$ 84			$ 84
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	$ (19)	(29)
Unrealized gains on equity investments	$ 0	89
Weighted average interest rate on non-current debt	3.19%			3.19%
Excess of the estimated fair value over the carrying value of debt			$ 2,000
Foreign exchange contracts
Derivative [Line Items]
Collateral Already Posted, Aggregate Fair Value	$ 32			$ 32
Derivative notional amounts outstanding	35,300			35,300		34,500
Cross currency interest rate swaps
Derivative [Line Items]
Derivative notional amounts outstanding	2,300			2,300		2,300
Interest Rate Contract
Derivative [Line Items]
Derivative Liability, Noncurrent	14			14		9
Derivative notional amounts outstanding	1,100			1,100		1,100
Equity Securities
Derivative [Line Items]
Available-for-sale Securities, Equity Securities	731			731		$ 751
Other Comprehensive Income (Loss)
Derivative [Line Items]
Foreign currency translation	(150)			$ (372)
Equity Investments without readily determinable value \| Equity Securities
Derivative [Line Items]
Impairment on equity method investments	$ (20)
Equity Investments with readily determinable value \| Equity Securities
Derivative [Line Items]
Unrealized gains on equity investments		$ 349
Retained Earnings \| ASU 2016-01 - Financial Instruments
Derivative [Line Items]
Cumulative effect adjustment					$ 232