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Equity - Narrative (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Dec. 30, 2017
Equity, Class of Treasury Stock [Line Items]
Anti-dilutive potential common shares excluded from reconciliation	14	6
Common stock repurchased	$ 220
December 2017 Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount			$ 1,500
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 960
Common stock repurchased (in shares)	4
Common stock repurchased	$ 220