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Shareholders' Equity - Share Repurchase Program (Details) - USD ($) shares in Millions	3 Months Ended		9 Months Ended
	Sep. 28, 2018	Mar. 30, 2018	Mar. 29, 2019	Jul. 25, 2018
Equity, Class of Treasury Stock [Line Items]
Repurchases of stock, value	$ 563,000,000	$ 155,000,000
Stock Repurchase Program Effective Until February 3, 2020
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, number of shares authorized to be repurchased			$ 5,000,000,000
Repurchases of stock, shares			0.8
Repurchases of stock, value			$ 61,000,000
Stock Repurchase Program Effective Until July 25, 2023
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, number of shares authorized to be repurchased				$ 5,000,000,000
Repurchases of stock, shares			7.6
Repurchases of stock, value			$ 502,000,000
Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Repurchases of stock, value			563,000,000
Stock repurchase program, remaining authorized repurchase, amount			$ 4,500,000,000

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Amount of stock repurchase plan authorized.

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