Restructuring and Integration - Additional Information (Details) - USD ($) $ in Millions	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
Restructuring Cost And Reserve [Line Items]
Expected cumulative costs	$ 135
Total expenses	103
Accrued restructuring liability	4	$ 6		$ 15
Severance and Related Benefits
Restructuring Cost And Reserve [Line Items]
Accrued restructuring liability	4	$ 6		12
Other Restructuring Costs
Restructuring Cost And Reserve [Line Items]
Accrued restructuring liability				$ 3
The Plan [Member]
Restructuring Cost And Reserve [Line Items]
Expected cumulative costs			$ 135
Expected annual cost savings by 2022			196
Total expenses	$ 103
The Plan [Member] | Severance and Related Benefits
Restructuring Cost And Reserve [Line Items]
Expected cumulative costs			80
The Plan [Member] | Other Restructuring Costs
Restructuring Cost And Reserve [Line Items]
Expected cumulative costs			$ 55