Leases (Narratives) (Details) $ in Millions	12 Months Ended
	Mar. 31, 2020 USD ($)
Leases [Abstract]
Right Of Use Asset Obtained In Exchange For Operating Lease Liability	$ 105.4
Right Of Use Asset Obtained In Exchange For Finance Lease Liability	948.2
Operating Cash Flows For Financing Leases	20.2
Cash paid for finance leases	$ 25.9