Leases (Narratives) (Details) $ in Millions	9 Months Ended
	Dec. 31, 2019 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
Cash paid for operating leases	18.9
Cash paid for finance leases	$ 247.2