Derivatives and Hedging Activities (Details 3) - Fair Value and Cash Flow Hedging [Member] - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2019	Sep. 30, 2018
Amount of Gain Recognized in Other Comprehensive Income on Derivative	$ 2.6	$ 2.9	$ 0.3
Location of Gain Reclassified from Accumulated Other Comprehensive Income into Income	2.3	4.4	0.3
Interest Expense [Member]
Location of Gain Reclassified from Accumulated Other Comprehensive Income into Income	0.4	1.2
Foreign Currency Remeasurement [Member]
Location of Gain Reclassified from Accumulated Other Comprehensive Income into Income	1.9	3.2	0.3
Interest Rate and Foreign Exchange Products [Member]
Amount of Gain Recognized in Other Comprehensive Income on Derivative	$ 2.6	$ 2.9	$ 0.3