Restructuring Programs - Additional Information (Details) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Sep. 30, 2020 USD ($) employee	Dec. 31, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Net restructuring and asset impairment charges	$ 20	$ (2)	$ 29	$ 47
Restructuring charges	23	7	35
Headcount reductions, number of employees | employee				1,100
Restructuring charges, net reversals	3	9	6	$ 18
Restructuring related reserve	33			33	$ 37
Severance and Related Costs
Restructuring Cost and Reserve [Line Items]
Net restructuring and asset impairment charges	16	1	27
Restructuring charges	18	7	32	57
Restructuring charges, net reversals	2	6	5
Other Contractual Termination Costs
Restructuring Cost and Reserve [Line Items]
Net restructuring and asset impairment charges	1	(1)	1
Restructuring charges	1	0	1	2
Restructuring charges, net reversals	0	1	0
Asset Impairments
Restructuring Cost and Reserve [Line Items]
Net restructuring and asset impairment charges	3	(2)	1
Restructuring charges	4	0	2	$ 6
Restructuring charges, net reversals	$ 1	$ 2	$ 1