Restructuring and Cost Reduction Activities Restructuring and Cost Reduction Activities - Other Programs Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 65	$ 5	$ 73	$ 25
Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges	54	$ 9	56	$ 16
Europe | Other Programs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, expected cost	50		50
Cash costs			57
Europe | Other Programs [Member] | Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges	32
North America | Other Programs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, expected cost	35		$ 35
North America | Other Programs [Member] | Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 18