Nonpension Postretirement and Postemployment Benefits Change in Projected Benefit Obligations, Plan Assets, and Funded Status, Postemployment (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Defined Benefit Plan Change In Accumulated Benefit Obligation [Roll Forward]
Other Assets	$ 231	$ 250
Amounts Recognized in Balance Sheet
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 Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	1,084	1,204	$ 1,178
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)
Foreign Currency Adjustments	(8)	(5)
End of Year	1,163	1,288	1,202
Funded Status	(79)	(84)
Other Assets	0	0
Amounts Recognized in Balance Sheet
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)
Curtailments	0	(28)
Acquisitions	(84)	(18)
Actual Return on Plan Assets	(65)	81
Employer Contributions	14	16
Benefits Paid, Plan Assets	(69)	(71)
Postemployment [Member]
Defined Benefit Plan Change In Accumulated Benefit Obligation [Roll Forward]
Beginning of Year	104	87
Service Cost	7	7	7
Interest Cost	4	4	3
Actuarial Gain (Loss)	0	8
Benefits Paid	(6)	(9)
Plan Amendments	0	8
Foreign Currency Adjustments	(1)	(1)
End of Year	108	104	$ 87
Funded Status	(108)	(104)
Amounts Recognized in Balance Sheet
Other Current Liabilities	(8)	(8)
Other Liabilities	(100)	(96)
Net Amount Recognized	(108)	(104)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss)
Prior Service Cost	6	7
Net Experience Loss	27	30
Net Amount Recognized	$ 33	$ 37