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Additional Financial Information (Supplemental Cash Flow Information) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2022
Additional Financial Information [Abstract] |  |  |
Interest paid | $ 242.5 | $ 196.7 | $ 135.0
Income taxes paid, net | 25.8 | 29.1 | 16.9
Non-cash investing activities |  |  |
Accrued equity method investment | 0.0 | 0.0 | 19.0
Cash paid for amounts included in the measurement of lease liabilities: |  |  |
Operating cash flows for operating leases | 55.5 | 42.3 | 57.0
Right-of-use assets obtained in exchange for new lease obligations: |  |  |
Operating leases | 172.1 | 12.4 | 67.8
Increase in right-of-use assets and lease liability due to a reassessment event: |  |  |
Operating leases - increase in right-of-use assets | 103.6 | 33.0 | 27.5
Operating leases - increase in lease liability | $ 103.6 | $ 33.0 | $ 27.5

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- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-2 + Details
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