Derivative Financial Instruments (Summary of Amount of Loss Recognized in Accumulated Other Comprehensive Income) (Details) - Derivatives in Cash Flow Hedging Relationships [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Derivative Instruments Gain Loss [Line Items]
Amount of (Loss) Recognized in AOCI			$ (16.8)	$ (18.7)
Continuing Operations [Member]
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Reclassified from AOCI into Net Earnings (Loss)	$ 1.5	$ (0.4)	1.8	(1.0)
Interest Rate Swap Contracts [Member]
Derivative Instruments Gain Loss [Line Items]
Amount of (Loss) Recognized in AOCI			(16.8)	(18.7)
Interest Rate Swap Contracts [Member] | Interest Expense [Member]
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Reclassified from AOCI into Net Earnings (Loss)	$ 1.5	$ (0.4)	$ 1.8	$ (1.0)