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Property and Equipment, net- Additional Information (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 8 Months Ended 9 Months Ended 11 Months Ended 12 Months Ended
Jan. 31, 2020
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2020
Sep. 30, 2021
Dec. 31, 2020
Dec. 31, 2019
Property, Plant and Equipment [Abstract]              
Depreciation and amortization expense $ 1.3 $ 17.4 $ 16.9 $ 45.0 $ 51.4 $ 62.3 $ 14.9