Derivative Financial Instruments and Hedging Activities (Details) $ in Millions	Sep. 30, 2017 USD ($)
Not designated as hedging instruments
Open derivative instruments
Derivative, Notional Amount	$ 79.3
Interest Rate Contract [Member] | Not designated as hedging instruments
Open derivative instruments
Derivative, Notional Amount	11.7
Cash Flow Hedging [Member] | Foreign Exchange Contract [Member] | Designated as hedging instrument
Open derivative instruments
Derivative, Notional Amount	$ 7.9