Significant Events - Additional Information (Details) $ in Millions  | 
3 Months Ended | 
|---|---|
| 
 Mar. 31, 2021  
USD ($)  
StoresAndGasStation 
 | |
| Business Acquisition [Line Items] | |
| Date of Acquisition Agreement | Mar. 08, 2021 | 
| Number of Businesses Yet to Be Acquired | StoresAndGasStation | 60 | 
| Payments to acquire businesses | $ | $ 102 | 
| Ownership | |
| Business Acquisition [Line Items] | |
| Number of Businesses Yet to Be Acquired | StoresAndGasStation | 26 | 
| Payments to acquire businesses | $ | $ 92 | 
| Period After Which Can Acquire Ownership | 4 years | 
| X | ||||||||||
- Definition Number of Businesses Yet to Be Acquired No definition available. 
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- Definition Period After Which Can Acquire Ownership No definition available. 
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- Definition Date when the business acquisition agreement was executed, in CCYY-MM-DD format. No definition available. 
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Details 
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