Nonpension Postretirement and Postemployment Benefits Change in Projected Benefit Obligations, Plan Assets, and Funded Status, Postretirement (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015
Amounts Recognized in Balance Sheet
Other Assets	$ 231	$ 250
Other Current Liabilities	(17)	(15)
Other Liabilities	(77)	(82)
Net Amount Recognized	(732)	(542)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss)
Prior Service Cost	67	59
Net Amount Recognized	67	59
Nonpension Postretirement [Member]
Defined Benefit Plan Change In Accumulated Benefit Obligation [Roll Forward]
Beginning of Year	1,288	1,202
Service Cost	29	28
Interest Cost	48	55
Actuarial Gain (Loss)	(53)	116
Benefits Paid	(57)	(62)
Curtailments	0	(28)
Acquisitions	(84)	(18)
Foreign Currency Adjustments	(8)	(5)
End of Year	1,163	1,288
Change in plan assets
Fair Value, Beginning of Year	1,204	1,178
Actual Return on Plan Assets	(65)	81
Employer Contributions	14	16
Benefits Paid, Plan Assets	(69)	(71)
Fair Value, End of Year	1,084	1,204
Funded Status	(79)	(84)
Amounts Recognized in Balance Sheet
Other Assets	0	0
Other Current Liabilities	(2)	(2)
Other Liabilities	(77)	(82)
Net Amount Recognized	(79)	(84)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss)
Prior Service Cost	(95)	(16)
Net Amount Recognized	$ (95)	$ (16)