Nonpension Postretirement and Postemployment Benefits Change in Projected Benefit Obligations, Plan Assets, and Funded Status, Postretirement (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016
Amounts Recognized in Balance Sheet
Other Assets	$ 66	$ 231
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 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)
Curtailments	0	0
Acquisitions	0	(84)
Foreign Currency Adjustments	1	(8)
End of Year	1,161	1,163
Change in plan assets
Fair Value, Beginning of Year	1,084	1,204
Actual Return on Plan Assets	111	(65)
Employer Contributions	15	14
Benefits Paid, Plan Assets	(74)	(69)
Fair Value, End of Year	1,136	1,084
Funded Status	(25)	(79)
Amounts Recognized in Balance Sheet
Other Assets	17	0
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)