Derivative Instruments and Hedging Activities (Schedule Of Other Comprehensive Income And Earnings From Foreign Exchange Contracts) (Details) - 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]
Total revenues	$ 1,444.6	$ 1,203.3	$ 2,889.4	$ 2,343.7
Interest expense	(23.6)	(18.3)	(49.4)	(38.2)
Foreign exchange forward contracts | Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) gain recognized in AOCI, net of tax	(6.1)	(3.9)	19.9	10.3
Foreign exchange forward contracts | Sales | Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax	7.4	7.0	16.2	12.4
Interest rate contracts | Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) gain recognized in AOCI, net of tax	(5.4)	(24.6)	(52.7)	(38.8)
Interest rate contracts | Interest Expense | Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax	(7.7)	3.4	(11.3)	7.0
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) from Hedging Activities
Derivative Instruments, Gain (Loss) [Line Items]
Total revenues	9.5	9.1	20.9	16.1
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) from Hedging Activities | Foreign exchange forward contracts
Derivative Instruments, Gain (Loss) [Line Items]
Total revenues	9.5	9.1	20.9	16.1
Interest expense	0.0	0.0	0.0	0.0
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) from Hedging Activities | Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Total revenues	0.0	0.0	0.0	0.0
Interest expense	$ (10.0)	$ 4.5	$ (14.6)	$ 9.1