Restructuring and Cost Reduction Activities Restructuring and Cost Reduction Activities - Other Programs Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 18	$ 34	$ 91	$ 59
Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges	5	$ 15	61	$ 31
Europe | Other Programs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, expected cost	40		40
Cash costs			50
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	30		30
North America | Other Programs [Member] | Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 3		$ 21