Nonpension Postretirement and Postemployment Benefits Change in Projected Benefit Obligations, Plan Assets, and Funded Status, Postemployment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
Defined Benefit Plan Change In Accumulated Benefit Obligation [Roll Forward]
Other Assets	$ 241	$ 228
Amounts Recognized in Balance Sheet
Other Liabilities	(33)	(34)
Postemployment
Defined Benefit Plan Change In Accumulated Benefit Obligation [Roll Forward]
Beginning of Year	42	43
Service Cost	3	3
Interest Cost	2	1
Actuarial (gain) loss	8	3
Benefits paid	(7)	(8)
Plan Amendments	0	0
Foreign Currency Adjustments	0	0
End of Year	48	42
Funded Status	(48)	(42)
Amounts Recognized in Balance Sheet
Other Current Liabilities	(7)	(5)
Other Liabilities	(41)	(37)
Net Amount Recognized	(48)	(42)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss)
Prior Service Cost	3	4
Net experience loss	(22)	(38)
Net Amount Recognized	$ (19)	$ (34)