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Commitments and Contingencies - Additional Information (Details)
3 Months Ended
Mar. 31, 2020
USD ($)
Store
Dec. 31, 2019
USD ($)
Commitments And Contingencies Disclosure [Abstract]    
Environmental liabilities $ 4,100,000 $ 3,400,000
Other Assets [Member]    
Commitments And Contingencies Disclosure [Abstract]    
Indemnification assets related to third party escrow funds, state funds or insurance 3,600,000 $ 3,000,000
Assets Held-for-sale [Member]    
Recorded Third Party Environmental Recoveries [Line Items]    
Maximum possible civil penalties per day if violates FTC divestiture orders $ 41,000  
Assets Held-for-sale [Member] | Circle K Stores Inc. [Member]    
Recorded Third Party Environmental Recoveries [Line Items]    
Number of stores divested | Store 9