Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	$ 59,471	$ 59,752	$ 60,160
Net change	649	(669)	(1,791)
Ending Balance	63,278	59,471	59,752
Cumulative Effect, Period of Adoption, Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance			(486)
Foreign Currency Translation
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(8,705)	(8,869)	(7,351)
Net change	(233)	164	(1,518)
Ending Balance	(8,938)	(8,705)	(8,869)
Gain/(Loss) On Securities
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	0	0	232
Net change	1	0	0
Ending Balance	1	0	0
Gain/(Loss) On Securities | Cumulative Effect, Period of Adoption, Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance			(232)
Employee Benefit Plans
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(6,891)	(6,158)	(6,150)
Net change	(66)	(733)	(8)
Ending Balance	(6,957)	(6,891)	(6,158)
Gain/ (Loss) On Derivatives & Hedges
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(295)	(195)	70
Net change	947	(100)	(265)
Ending Balance	652	(295)	(195)
Accumulated Other Comprehensive Income (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(15,891)	(15,222)	(13,199)
Net change	649	(669)	(1,791)
Ending Balance	$ (15,242)	$ (15,891)	(15,222)
Accumulated Other Comprehensive Income (Loss) | Cumulative Effect, Period of Adoption, Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance			$ (232)