Derivative Instruments and Hedging Activities (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Derivative Instruments Gain (Loss) [Line Items]
Gain (loss) recognized on derivative instruments	$ (29.9)	$ (0.8)	$ (41.5)	$ (2.1)
Interest Expense [Member] | Interest rate swaps
Derivative Instruments Gain (Loss) [Line Items]
Gain (loss) recognized on derivative instruments	(5.3)	(1.0)	(10.2)	(2.5)
Sales [Member] | Foreign exchange forward contracts
Derivative Instruments Gain (Loss) [Line Items]
Gain (loss) recognized on derivative instruments	0.4	0.2	0.9	(0.3)
Asset Management Income [Member] | Foreign exchange forward contracts
Derivative Instruments Gain (Loss) [Line Items]
Gain (loss) recognized on derivative instruments	$ (25.0)	$ 0.0	$ (32.2)	$ 0.7