Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance		$ 59,752	$ 60,160	$ 70,418
Net change		(669)	(1,791)	1,702
Cumulative adjustment	[1]		(486)
Ending Balance		59,471	59,752	60,160
Foreign Currency Translation
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance		(8,869)	(7,351)	(9,047)
Net change		164	(1,518)	1,696
Ending Balance		(8,705)	(8,869)	(7,351)
Gain/(Loss) On Securities
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance		0	232	411
Net change		0	0	(179)
Cumulative adjustment			(232)
Ending Balance		0	0	232
Employee Benefit Plans
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance		(6,158)	(6,150)	(5,980)
Net change		(733)	(8)	(170)
Ending Balance		(6,891)	(6,158)	(6,150)
Gain/ (Loss) On Derivatives & Hedges
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance		(195)	70	(285)
Net change		(100)	(265)	355
Ending Balance		(295)	(195)	70
Accumulated Other Comprehensive Income (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance		(15,222)	(13,199)	(14,901)
Net change		(669)	(1,791)	1,702
Cumulative adjustment	[1]		(232)
Ending Balance		$ (15,891)	$ (15,222)	$ (13,199)

[1] (1) See Note 1 to Consolidated Financial Statements for additional details on the effect of cumulative adjustments to retained earnings.