Nonpension Postretirement and Postemployment Benefits Components of Postretirement Expense, Postemployment (Details) - Postemployment [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actuarial gain change in incidence rate assumption	$ 31
Service Cost	6	$ 7	$ 7
Interest Cost	3	3	4
Amortization of Unrecognized Prior Service Cost (Credit)	1	1	1
Recognized net (gain) loss	0	3	3
Postemployment Benefits, Period Expense	10	$ 14	$ 15
Estimated net prior service cost for defined benefit pension plans, expected to be amortized	5
Defined Benefit Plan, Future Amortization of Prior Service Cost (Credit)	$ 1