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Assets Held for Sale - Additional Information (Details)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
USD ($)
Property
Store
Sep. 30, 2020
USD ($)
Property
Sep. 30, 2021
USD ($)
Property
Store
Sep. 30, 2020
USD ($)
Property
Dec. 31, 2020
Store
Long Lived Assets Held-for-sale [Line Items]          
Number of properties sold | Property 14 7 23 20  
Proceeds from sale of properties $ 4.9 $ 3.8 $ 8.8 $ 13.3  
Gain on sales of assets, net $ 0.4 $ 2.2 $ 1.5 $ 4.0  
Assets Held-for-sale [Member]          
Long Lived Assets Held-for-sale [Line Items]          
Number of Stores | Store 11   11   25