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Restructuring and Other (Severance Liability Rollforward) (Details) - Severance liability - USD ($)
$ in Millions
3 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Restructuring and Other Severance Liability    
Beginning balance $ 1.5 $ 5.7
Accruals 2.8 2.4
Severance payments (2.0) (3.8)
Ending balance 2.3 $ 4.3
Accounts Payable and Accrued Liabilities    
Restructuring Cost and Reserve [Line Items]    
Remaining severance liability, expected to be paid in next 12 months $ 2.3