Nonpension Postretirement and Postemployment Benefits Change in Projected Benefit Obligations, Plan Assets, and Funded Status, Postemployment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Defined Benefit Plan Change In Accumulated Benefit Obligation [Roll Forward]
Other Assets	$ 252	$ 66
Amounts Recognized in Balance Sheet
Other Liabilities	(40)	(40)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss)
Prior Service Cost	48	56
Net Amount Recognized	48	56
Nonpension Postretirement [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	1,292	1,136	$ 1,084
Defined Benefit Plan Change In Accumulated Benefit Obligation [Roll Forward]
Beginning of Year	1,161	1,163
Service Cost	18	21
Interest Cost	37	39
Actuarial Gain (Loss)	29	2
Benefits Paid	(61)	(65)
Plan Amendments	0	0
Foreign Currency Adjustments	3	1
End of Year	1,190	1,161	1,163
Funded Status	102	(25)
Other Assets	144	17
Amounts Recognized in Balance Sheet
Other Current Liabilities	(2)	(2)
Other Liabilities	(40)	(40)
Net Amount Recognized	102	(25)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss)
Prior Service Cost	(77)	(86)
Net Amount Recognized	(77)	(86)
Curtailments and special termination benefits	3	0
Actual Return on Plan Assets	217	111
Employer Contributions	13	15
Benefits Paid, Plan Assets	(74)	(74)
Postemployment [Member]
Defined Benefit Plan Change In Accumulated Benefit Obligation [Roll Forward]
Beginning of Year	87	108
Service Cost	6	7	7
Interest Cost	3	3	4
Actuarial Gain (Loss)	(45)	(25)
Benefits Paid	(8)	(6)
Plan Amendments	0	0
Foreign Currency Adjustments	0	0
End of Year	43	87	$ 108
Funded Status	(43)	(87)
Amounts Recognized in Balance Sheet
Other Current Liabilities	(4)	(8)
Other Liabilities	(39)	(79)
Net Amount Recognized	(43)	(87)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss)
Prior Service Cost	5	6
Net Experience Loss	(46)	(1)
Net Amount Recognized	$ (41)	$ 5