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Other Employee Benefits (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Retirement Benefits [Abstract]      
401(k) contribution matching expense $ 6.1 $ 2.3  
Deferred compensation plan obligations 14.2 14.6 $ 14.5
TOLI policies held by the Rabbi Trust (see Note 13) $ 8.4 $ 8.0 $ 9.0