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Equity - Narrative (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019	Feb. 29, 2020
Equity, Class of Treasury Stock [Line Items]
Anti-dilutive potential common shares excluded from reconciliation	7	10	7	14
Common stock repurchased				$ 220
February 2020 Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount					$ 1,500
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 1,500		$ 1,500
December 2017 Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Common stock repurchased (in shares)				4
Common stock repurchased				$ 220