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

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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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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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Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Description of the transactions or other events that will result in the reclassification into earnings of gains or losses reported in accumulated other comprehensive income. May include the time period over which gains or losses will be reclassified to earnings.

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Maximum period of time the entity is hedging its exposure to variability in future cash flows for forecasted transactions, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Excludes forecasted transactions related to payment of variable interest on existing financial instruments.

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Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017	Dec. 31, 2017	Jan. 01, 2018
Derivative [Line Items]
Available-for-sale Securities, Equity Securities	$ 697		$ 697		$ 751
Accumulated other comprehensive income on derivatives, after tax	(80)		$ (80)
Reclassification of foreign exchange contracts into earnings, period			next 12 months
Maximum length of time for hedge exposure			18 months
Unrealized gains on equity investments	$ 0	$ 47	$ 0	$ 136
Weighted average interest rate on non-current debt	3.20%		3.20%
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	$ 126		$ 126
Derivative notional amounts outstanding	37,000		37,000		34,500
Cross currency interest rate swaps
Derivative [Line Items]
Derivative notional amounts outstanding	5,300		5,300		2,300
Interest Rate Contract [Member]
Derivative [Line Items]
Derivative Liability, Noncurrent	0		0		9
Derivative notional amounts outstanding	1,100		1,100		1,100
Equity Securities
Derivative [Line Items]
Available-for-sale Securities, Equity Securities	$ 697		697		$ 751
Equity Investments without readily determinable value \| Equity Securities
Derivative [Line Items]
Equity, Fair Value Adjustment, Impairment Loss			(25)
Changes in fair value, changes in observable prices			$ 38
Equity Investments with readily determinable value \| Equity Securities
Derivative [Line Items]
Unrealized gains on equity investments				$ 354
Retained Earnings \| ASU 2016-01 - Financial Instruments
Derivative [Line Items]
Cumulative effect adjustment						$ 232