Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 29, 2019	Mar. 30, 2018
Income Tax Contingency [Line Items]
Equity Method Investment, Other than Temporary Impairment	$ 343	$ 0
U.S. statutory rate (as a percent)	21.00%
Income tax expense	$ 486	$ 506
Effective tax rate (as a percent)	22.80%	27.60%

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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