Capital and Treasury Stock - Changes in Treasury Stock (Details) - USD ($) shares in Thousands, $ in Millions	12 Months Ended
Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
Changes in Treasury Stock Shares Outstanding [Roll Forward]
Treasury Stock, Balance, Shares	457,519	437,318	413,332
Employee compensation and stock option plans, Shares	(20,053)	(22,082)	(25,508)
Treasury Stock, Ending Balance, Shares	487,336	457,519	437,318
Changes in treasury stock
Treasury Stock, Balance	$ 34,362	$ 31,554	$ 28,352
Employee compensation and stock option plans related to treasury stock	(2,691)	(3,060)	(3,156)
Repurchase of common stock, Amounts	6,746	5,868	6,358
Treasury Stock, Ending Balance	$ 38,417	$ 34,362	$ 31,554
Treasury Stock
Changes in Treasury Stock Shares Outstanding [Roll Forward]
Repurchase of common stock, Shares	49,870	42,283	49,494
Changes in treasury stock
Repurchase of common stock, Amounts	$ 6,746	$ 5,868	$ 6,358

Changes in treasury stock.

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Changes in Treasury Stock Shares Outstanding [Roll Forward]

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Number of shares of stock issued attributable to transactions classified as other.

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Value of shares of stock issued attributable to transactions classified as other.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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Number of shares that have been repurchased during the period and are being held in treasury.

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The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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