Restructuring and Cost Reduction Activities Restructuring and Cost Reduction Activities - Schedule of Restructuring and Cost Reduction Activities Narrative (Details) - Project K [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Dec. 29, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 8	$ 20
Project reserve	74		$ 104
COGS
Restructuring Cost and Reserve [Line Items]
Restructuring charges	6	13
Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 2	$ 7