Nonpension Postretirement and Postemployment Benefits Components of Postretirement Expense, Postemployment (Details) - Global - Postemployment - USD ($) $ in Millions	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actuarial gain change in incidence rate assumption	$ 31
Service Cost	3	$ 6	$ 7
Interest Cost	1	3	3
Amortization of Unrecognized Prior Service Cost (Credit)	1	1	1
Recognized net (gain) loss	(5)	0	3
Postemployment Benefits, Period Expense	0	$ 10	$ 14
Estimated net prior service cost for defined benefit pension plans, expected to be amortized	5
Defined Benefit Plan, Expected Amortization of Prior Service Cost (Credit), Next Fiscal Year	$ 1