Leases (Schedule Of Lease Expense) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Leases [Abstract]
Operating lease cost	$ 33.9
Amortization of right-of-use assets	2.2
Interest on lease liabilities	0.7
Total finance lease cost	2.9
Variable lease cost	9.5
Total lease cost	$ 46.3