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Acquisitions and Dispositions - Actual and Pro Forma Financial Results (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Actual financial results of acquiree since acquisition date    
Net income $ 51.6 $ 90.9
Hitpoint, Perryville, Sam Houston And theScore    
Actual financial results of acquiree since acquisition date    
Revenues   1,306.0
Net income $ 51.6 $ 36.1