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Employee Deferred Savings Plan - Contributions to Plan (Details) - USD ($)
$ in Millions
6 Months Ended 12 Months Ended
Dec. 31, 2020
Dec. 31, 2022
Dec. 31, 2021
Jun. 30, 2021
Retirement Benefits [Abstract]        
Deferred savings plan contributions $ 4.0 $ 9.0 $ 8.4 $ 7.1