Nonpension Postretirement and Postemployment Benefits Change in Projected Benefit Obligations, Plan Assets, and Funded Status, Postemployment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Defined Benefit Plan Change In Accumulated Benefit Obligation [Roll Forward]
Other Assets	$ 66	$ 231
Amounts Recognized in Balance Sheet
Other Liabilities	(40)	(77)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss)
Prior Service Cost	56	67
Net Amount Recognized	56	67
Nonpension Postretirement [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	1,136	1,084	$ 1,204
Defined Benefit Plan Change In Accumulated Benefit Obligation [Roll Forward]
Beginning of Year	1,163	1,288
Service Cost	21	29
Interest Cost	39	48
Actuarial Gain (Loss)	2	(53)
Benefits Paid	(65)	(57)
Foreign Currency Adjustments	1	(8)
End of Year	1,161	1,163	1,288
Funded Status	(25)	(79)
Other Assets	17	0
Amounts Recognized in Balance Sheet
Other Current Liabilities	(2)	(2)
Other Liabilities	(40)	(77)
Net Amount Recognized	(25)	(79)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss)
Prior Service Cost	(86)	(95)
Net Amount Recognized	(86)	(95)
Curtailments	0	0
Acquisitions	0	(84)
Actual Return on Plan Assets	111	(65)
Employer Contributions	15	14
Benefits Paid, Plan Assets	(74)	(69)
Postemployment [Member]
Defined Benefit Plan Change In Accumulated Benefit Obligation [Roll Forward]
Beginning of Year	108	104
Service Cost	7	7	7
Interest Cost	3	4	4
Actuarial Gain (Loss)	(25)	0
Benefits Paid	(6)	(6)
Plan Amendments	0	0
Foreign Currency Adjustments	0	(1)
End of Year	87	108	$ 104
Funded Status	(87)	(108)
Amounts Recognized in Balance Sheet
Other Current Liabilities	(8)	(8)
Other Liabilities	(79)	(100)
Net Amount Recognized	(87)	(108)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss)
Prior Service Cost	6	6
Net Experience Loss	(1)	27
Net Amount Recognized	$ 5	$ 33