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Derivative Financial Instruments (Notional Amounts Of Outstanding Forward Contracts) (Details) - Forward Contracts - USD ($) $ in Thousands | Jun. 30, 2018 | Sep. 30, 2017
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Designated as Hedging Instrument |  |
Notional amounts | $ 67,050 | $ 101,597
Designated as Hedging Instrument | Euro / U.S. Dollar |  |
Notional amounts | 44,699 | 64,831
Designated as Hedging Instrument | Japanese Yen / U.S. Dollar |  |
Notional amounts | 11,830 | 22,675
Designated as Hedging Instrument | Swedish Krona / U.S. Dollar |  |
Notional amounts | 10,521 | 14,091
Not Designated as Hedging Instrument |  |
Notional amounts | 368,201 | 318,519
Not Designated as Hedging Instrument | Australia, Dollars |  |
Notional amounts | 3,226 | 1,585
Not Designated as Hedging Instrument | Canadian / U.S. Dollar |  |
Notional amounts | 7,421 | 12,809
Not Designated as Hedging Instrument | Swiss Franc / Euro |  |
Notional amounts | 0 | 7,157
Not Designated as Hedging Instrument | Chinese Yuan offshore / Euro |  |
Notional amounts | 0 | 10,423
Not Designated as Hedging Instrument | Euro / U.S. Dollar |  |
Notional amounts | 309,733 | 244,000
Not Designated as Hedging Instrument | Japanese Yen / Euro |  |
Notional amounts | 0 | 17,694
Not Designated as Hedging Instrument | Israeli Shekel / U.S. Dollar |  |
Notional amounts | 7,677 | 8,820
Not Designated as Hedging Instrument | Japanese Yen / U.S. Dollar |  |
Notional amounts | 18,152 | 3,198
Not Designated as Hedging Instrument | Swedish Krona / U.S. Dollar |  |
Notional amounts | 8,568 | 4,627
Not Designated as Hedging Instrument | Danish Krona / U.S. Dollar |  |
Notional amounts | 2,645 | 1,743
Not Designated as Hedging Instrument | Hong Kong, Dollars |  |
Notional amounts | 2,628 | 915
Not Designated as Hedging Instrument | All other |  |
Notional amounts | $ 8,151 | $ 5,548

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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