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Other Events - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Sep. 30, 2021
Other Commercial Events [Line Items]          
Restructuring charges $ 2.1 $ 16.5 $ 4.2 $ 23.0  
Subsequent Event | Minimum          
Other Commercial Events [Line Items]          
Gain Contingency, Unrecorded Amount         $ 40.0
Subsequent Event | Maximum          
Other Commercial Events [Line Items]          
Gain Contingency, Unrecorded Amount         $ 50.0