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Shareholders' Equity (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017	Mar. 01, 2017
Class of Stock [Line Items]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased					10.0
Stock repurchased during the period, shares			2.1	4.6
Stock repurchased during the period, value			$ 436	$ 893
Remaining number of shares authorized to be repurchased, shares	5.5		5.5
Shares remaining to be repurchased as a percent of total shares outstanding	2.00%		2.00%
Recognized net actuarial losses (before tax)			$ 187	170
Amortization of prior service credit (before tax)			24	35
Purchases of common stock			$ 436	$ 901
Dividends declared per share	$ 0.93	$ 0.84	$ 1.86	$ 1.68
Dividends paid in cash	$ 276	$ 253	$ 526	$ 483

X

- Definition

Stock Repurchase Program, Authorized Shares Remaining for Repurchase as a Percentage Of Total Shares Outstanding

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Aggregate dividends declared during the period for each share of common stock outstanding.

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Amount, before tax, of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) of defined benefit plan.

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Amount, before tax, of reclassification adjustment from accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan.

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The cash outflow to reacquire common stock during the period.

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Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.

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The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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