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Commitments and Contingencies - Additional Information (Details)
$ in Millions
12 Months Ended
Dec. 31, 2020
USD ($)
businessAcquired
Dec. 31, 2019
USD ($)
Commitments and Contingencies Disclosure [Abstract]    
Number of non owned sites (in sites) 66  
Number of national priority list (in sites) 16  
Number of sites not named as a potentially responsible party (PRP) the company's liability has been resolved or has been deemed de minimis (in sites) 60  
Incurred and claims to be resolved over extended period of time 30 years  
Environmental reserves | $ $ 32 $ 32
Guarantees at carrying value | $ $ 615 $ 453