Pension Benefits Change in Projected Benefit Obligations, Plan Assets, and Funding Status (Details) - USD ($) $ in Millions	1 Months Ended		12 Months Ended
	Jan. 31, 2019	Sep. 30, 2017	Dec. 30, 2017	Dec. 31, 2016
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss)
Prior Service Cost			$ 48	$ 56
Net Amount Recognized			48	56
Amounts Recognized in Balance Sheet
Other Assets			252	66
Other liabilities			(839)	(1,024)
Defined Benefit Plan, Accumulated Benefit Obligation			5,400	5,100
Pension
Change in Benefit Obligation [Roll Forward]
Beginning of Year			5,510	5,316
Service Cost			96	98
Interest Cost			164	174
Plan Participants' Contributions			1	1
Plan Amendments			6	5
Actuarial Gain (Loss)			264	404
Benefits Paid			(395)	(299)
Curtailments and special termination benefits			(156)	(1)
Other			1	2
Foreign Currency Adjustments			157	(190)
End of Year			5,648	5,510
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value, Beginning of Year			4,544	4,584
Actual Return on Plan Assets			666	415
Employer Contributions			31	18
Plan Participants' Contributions			1	1
Benefits Paid, Plan Assets			(364)	(268)
Other			1	2
Foreign Currency Adjustments			164	(208)
Fair Value, End of Year			5,043	4,544
Funded Status			(605)	(966)
Amounts Recognized in Balance Sheet
Other Assets			252	66
Other Current Liabilities			(19)	(11)
Other liabilities			(838)	(1,021)
Net Amount Recognized			$ (605)	$ (966)
Minimum
Amounts Recognized in Balance Sheet
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	3.00%
Maximum
Amounts Recognized in Balance Sheet
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	7.00%
Project K
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments		$ 136