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v3.23.1

Debt (Accounting for Credit Agreement amendment and Senior Notes redemption and issuance) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Mar. 31, 2021
Debt Instrument [Line Items] |  |  |
(Gain) loss on extinguishment of debt | $ (57.4) | $ 28.2 | $ 0.0
Revolving Credit Facility, Term Loan A and Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
(Gain) 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 |  |  |
Debt Instrument [Line Items] |  |  |
(Gain) 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 |  |  |
Debt Instrument [Line Items] |  |  |
(Gain) 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 |
Revolving Credit Facility |  |  |
Debt Instrument [Line Items] |  |  |
(Gain) loss on extinguishment of debt | $ 0.0 | $ 1.1 |

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- Definition Debt Issuance Costs, Discounts and Call Premiums, Recorded As Reduction of Outstanding Debt, Amortized Over Life of New Issuances + References No definition available. + Details
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