Financial Instruments (Narrative) (Details) € in Millions |
3 Months Ended | 12 Months Ended | ||
---|---|---|---|---|
Dec. 31, 2019
USD ($)
|
Dec. 31, 2019
EUR (€)
|
Sep. 30, 2019
USD ($)
|
Sep. 30, 2019
EUR (€)
|
|
Derivative [Line Items] | ||||
Net liability position of derivatives with credit risk-related contingent features | $ 29,900,000 | $ 30,100,000 | ||
Collateral posted on liability positions with credit risk-related contingent features | 0 | |||
Collateral amount that counterparties would be required to post | $ 128,200,000 | 157,100,000 | ||
Forward Exchange Contracts | Cash Flow Hedges | ||||
Derivative [Line Items] | ||||
Maximum remaining maturity of foreign currency derivatives | 1 year 10 months 24 days | 1 year 10 months 24 days | ||
Foreign Currency Debt | Euro Denominated | ||||
Derivative [Line Items] | ||||
Notional amount included in designated foreign currency denominated debt | $ 1,068,800,000 | € 953.2 | $ 1,036,900,000 | € 951.3 |