Restructuring Charges (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020
Realignment Program [Member]
Accrued Restructuring Costs
Restructuring costs incurred	$ 8	$ 40
2020 Fit for Growth [Member]
Accrued Restructuring Costs
Restructuring costs incurred	$ 43	$ 137