Business Optimization Charges - Components of Restructuring Charges (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Restructuring Cost and Reserve [Line Items]
Charges	$ 25	$ 25
Cost of Goods Sold
Restructuring Cost and Reserve [Line Items]
Charges	8	16
Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Charges	16	0
Research and Development Expenses
Restructuring Cost and Reserve [Line Items]
Charges	1	9
Employee termination costs
Restructuring Cost and Reserve [Line Items]
Charges	19	8
Employee termination costs | Cost of Goods Sold
Restructuring Cost and Reserve [Line Items]
Charges	2	0
Employee termination costs | Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Charges	16	(1)
Employee termination costs | Research and Development Expenses
Restructuring Cost and Reserve [Line Items]
Charges	1	9
Contract termination costs
Restructuring Cost and Reserve [Line Items]
Charges		7
Contract termination costs | Cost of Goods Sold
Restructuring Cost and Reserve [Line Items]
Charges		7
Contract termination costs | Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Charges		0
Contract termination costs | Research and Development Expenses
Restructuring Cost and Reserve [Line Items]
Charges		0
Asset impairments
Restructuring Cost and Reserve [Line Items]
Charges	6	10
Asset impairments | Cost of Goods Sold
Restructuring Cost and Reserve [Line Items]
Charges	6	9
Asset impairments | Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Charges	0	1
Asset impairments | Research and Development Expenses
Restructuring Cost and Reserve [Line Items]
Charges	$ 0	$ 0