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Leases (Narratives) (Details) - USD ($) $ in Millions | 9 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2021 | Mar. 31, 2021
Leases [Abstract] |  |
Right Of Use Asset Obtained In Exchange For Operating Lease Liability | $ 384.5 | $ 513.6
Right Of Use Asset Obtained In Exchange For Finance Lease Liability | 79.3 | 92.5
Cash paid for operating leases | 22.6 | 22.0
Cash paid for finance leases | $ 129.2 | $ 173.5

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