Restructuring Charges (Narrative) (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
	Sep. 16, 2019	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2020	Dec. 30, 2019	Dec. 31, 2018
Turkey
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost remaining		$ 2	$ 2
EMEA
Restructuring Cost and Reserve [Line Items]
Expected reduction in overhead costs						$ 50
Restructuring and related cost, incurred cost			63
Naples, Italy Manufacturing Plant
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost			54
Restructuring and related cost, expected cost		145	145		$ 127
Restructuring and related cost, expected cash payments		98	98
Naples, Italy Manufacturing Plant | Asset Impairments Charges
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost	$ 43	18
Naples, Italy Manufacturing Plant | Other Asset Impairment Charges
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost	$ 8
Naples, Italy Manufacturing Plant | Employee-related Charges
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost		$ 3	$ 3
Scenario, Forecast | Naples, Italy Manufacturing Plant
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cash payments				$ 91
Scenario, Forecast | Naples, Italy Manufacturing Plant | Other Asset Impairment Charges
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cash payments				75
Scenario, Forecast | Naples, Italy Manufacturing Plant | Employee-related Charges
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cash payments				$ 16