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. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018
Basic EPS
Net income/(loss) attributable to common shareholders	$ 899	$ 619	$ 1,753	$ 2,376
Weighted average shares of common stock outstanding (in shares)	1,221	1,219	1,220	1,219
Basic earnings/(loss) per common share (in dollars per share)	$ 0.74	$ 0.51	$ 1.44	$ 1.95
Diluted EPS
Net income/(loss) attributable to common shareholders	$ 899	$ 619	$ 1,753	$ 2,376
Weighted average shares of common stock outstanding (in shares)	1,221	1,219	1,220	1,219
Effect of dilutive equity awards (in shares)	2	7	3	8
Weighted average shares of common stock outstanding, including dilutive effect (in shares)	1,223	1,226	1,223	1,227
Diluted earnings/(loss) per common share (in dollars per share)	$ 0.74	$ 0.50	$ 1.43	$ 1.94