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		9 Months Ended
	Sep. 25, 2021	Sep. 26, 2020	Sep. 25, 2021	Sep. 26, 2020
Basic EPS
Net income/(loss) attributable to common shareholders	$ 733	$ 597	$ 1,269	$ (676)
Weighted average shares of common stock outstanding (in shares)	1,225	1,223	1,224	1,222
Basic earnings/(loss) per common share (in dollars per share)	$ 0.60	$ 0.49	$ 1.04	$ (0.55)
Diluted EPS
Net income/(loss) attributable to common shareholders	$ 733	$ 597	$ 1,269	$ (676)
Weighted average shares of common stock outstanding (in shares)	1,225	1,223	1,224	1,222
Effect of dilutive equity awards (in shares)	11	6	11	0
Weighted average shares of common stock outstanding, including dilutive effect (in shares)	1,236	1,229	1,235	1,222
Diluted earnings/(loss) per common share (in dollars per share)	$ 0.59	$ 0.49	$ 1.03	$ (0.55)