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Assets Held for Sale - Additional Information (Details)
$ in Millions
12 Months Ended
Dec. 31, 2020
USD ($)
Store
Property
Dec. 31, 2019
USD ($)
Store
Property
Dec. 31, 2018
USD ($)
Property
Long Lived Assets Held For Sale [Line Items]      
Number of properties sold | Property 33 8 11
Proceeds from sale of properties $ 21.2 $ 3.9 $ 4.9
Gain on sales of assets, net $ 6.4 $ 1.4  
Assets Held-for-sale [Member]      
Long Lived Assets Held For Sale [Line Items]      
Number of Stores | Store 25 24