Financial Instruments (Narrative) (Details) € in Millions |
3 Months Ended | 12 Months Ended | ||
---|---|---|---|---|
Dec. 31, 2016
USD ($)
|
Dec. 31, 2016
EUR (€)
|
Sep. 30, 2016
USD ($)
|
Sep. 30, 2016
EUR (€)
|
|
Derivative [Line Items] | ||||
Net liability position of derivatives with credit risk-related contingent features | $ 17,400,000 | $ 11,200,000 | ||
Collateral posted on liability positions with credit risk-related contingent features | 0 | |||
Collateral amount that counterparties would be required to post | $ 334,000,000 | 267,600,000 | ||
Forward Exchange Contracts [Member] | ||||
Derivative [Line Items] | ||||
Maximum remaining maturity of foreign currency derivatives | 2 years 6 months | 2 years 6 months | ||
Foreign Currency Debt [Member] | Euro Denominated [Member] | ||||
Derivative [Line Items] | ||||
Notional amount included in designated foreign currency denominated debt | $ 958,000,000 | € 910.9 | $ 1,034,400,000 | € 920.7 |