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Debt (Gain (Loss) on Extinguishment of Debt) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2023 | Dec. 31, 2022
Extinguishment of Debt [Line Items] |  |  |  |
Gain on extinguishment of debt | $ 0.0 | $ 38.2 | $ 21.2 | $ 40.3
Term Loan A |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |
Gain on extinguishment of debt | 0.0 | 0.0 | 0.0 | (1.3)
Senior Notes |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |
Gain on extinguishment of debt | $ 0.0 | $ 38.2 | $ 21.2 | $ 41.6

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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481303/470-50-40-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481303/470-50-40-4 + Details
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