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Summary of Significant Accounting Policies - Narrative - Basis of Presentation and Nature of Operations (Details)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 20, 2020
$ / shares
Dec. 19, 2020
$ / shares
Dec. 31, 2021
USD ($)
segment
Mar. 10, 2021
$ / shares
Dec. 31, 2020
USD ($)
Accounting Policies [Abstract]          
Number of operating segments | segment     2    
Conversion price per share (in USD per share) $ 56.00     $ 51.00  
Cash dividends per share (in USD per share) $ 5.00 $ 5.00      
Restricted cash | $     $ 3.0   $ 3.0