Derivative Financial Instruments - Outstanding Foreign Currency Forward Contracts that were Entered into to Hedge Forecasted Cash Flows (Details) - Sep. 30, 2016 € in Millions, ₩ in Millions, ¥ in Millions, PHP in Millions, $ in Millions	EUR (€)	PHP	JPY (¥)	KRW (₩)	USD ($)
Derivative [Line Items]
Derivative instrument with a credit-risk-related contingent feature					$ 1.8
Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional Amount	€ 51.3	PHP 376.7	¥ 1,127.5	₩ 18,900.0