Earnings Per Share Schedule of Earnings Per Common Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Basic EPS
Net income/(loss) attributable to common shareholders	$ 378	$ 405
Weighted average shares of common stock outstanding (in shares)	1,222	1,220
Basic earnings/(loss) per common share (in dollars per share)	$ 0.31	$ 0.33
Diluted EPS
Net income/(loss) attributable to common shareholders	$ 378	$ 405
Weighted average shares of common stock outstanding (in shares)	1,222	1,220
Effect of dilutive equity awards (in shares)	2	4
Weighted average shares of common stock outstanding, including dilutive effect (in shares)	1,224	1,224
Diluted earnings/(loss) per common share (in dollars per share)	$ 0.31	$ 0.33