Pension Benefits Change in Projected Benefit Obligations, Plan Assets, and Funding Status (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss)
Prior Service Cost	$ 56	$ 67
Net Amount Recognized	56	67
Amounts Recognized in Balance Sheet
Other Assets	66	231
Other liabilities	(1,024)	(946)
Defined Benefit Plan, Accumulated Benefit Obligation	5,100	4,900
Pension
Change in Benefit Obligation [Roll Forward]
Beginning of Year	5,316	5,570
Service Cost	98	114
Interest Cost	174	206
Plan Participants' Contributions	1	2
Plan Amendments	5	25
Actuarial Gain (Loss)	404	(191)
Benefits Paid	(299)	(262)
Curtailments	(1)	(2)
Other	2	4
Foreign Currency Adjustments	(190)	(150)
End of Year	5,510	5,316
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value, Beginning of Year	4,584	5,028
Actual Return on Plan Assets	415	(102)
Employer Contributions	18	19
Plan Participants' Contributions	1	2
Benefits Paid, Plan Assets	(268)	(235)
Other	2	4
Foreign Currency Adjustments	(208)	(132)
Fair Value, End of Year	4,544	4,584
Funded Status	(966)	(732)
Amounts Recognized in Balance Sheet
Other Assets	66	231
Other Current Liabilities	(11)	(17)
Other liabilities	(1,021)	(946)
Net Amount Recognized	$ (966)	$ (732)