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Debt (Loss on Extinguishment of Debt) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Jun. 30, 2021 | Jun. 30, 2020
Extinguishment of Debt [Line Items] |  |
Loss on extinguishment of debt | $ 26.6 | $ 0.0
Revolving Credit Facility, Term Loan A and Senior Notes |  |
Extinguishment of Debt [Line Items] |  |
Loss on extinguishment of debt | 26.4 |
Recorded as a Reduction of Outstanding Debt Balances & Amortized Over Life of New Issuances | 62.1 |
Total | 88.5 |
Revolving Credit Facility, Term Loan A and Senior Notes | New Debt Issuance Costs and Call Premiums |  |
Extinguishment of Debt [Line Items] |  |
Loss on extinguishment of debt | 21.2 |
Recorded as a Reduction of Outstanding Debt Balances & Amortized Over Life of New Issuances | 31.0 |
Total | 52.2 |
Revolving Credit Facility, Term Loan A and Senior Notes | Previously Incurred Debt Issuance Costs |  |
Extinguishment of Debt [Line Items] |  |
Loss on extinguishment of debt | 5.2 |
Recorded as a Reduction of Outstanding Debt Balances & Amortized Over Life of New Issuances | 31.1 |
Total | 36.3 |
Term Loan B |  |
Extinguishment of Debt [Line Items] |  |
Loss on extinguishment of debt | $ 0.2 |

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