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New Accounting Pronouncements (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Jan. 01, 2020
Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Stockholders' equity $ 1,079.2 $ 1,102.9 $ 640.1   $ 511.5
Retained Deficit          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Stockholders' equity $ (51.6) $ (51.8) $ (477.2)   $ (575.7)
Adjustment | Retained Deficit | Accounting Standards Update 2016-13          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Stockholders' equity       $ 0.5