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Related-Party Transactions (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Related Party Transaction [Line Items]      
Related party transaction $ 0.0 $ 0.0 $ 0.0
Receivables      
Related Party Transaction [Line Items]      
Due from related parties $ 0.0 $ 0.0