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Derivative Financial Instruments (Details) | 12 Months Ended |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Sep. 30, 2014 Cash Flow Hedging [Member] Interest Rate Swap [Member] USD ($) | Sep. 30, 2014 Designated as Hedging Instrument [Member] Cash Flow Hedging [Member] Interest Rate Swap [Member] USD ($) | Sep. 30, 2013 Designated as Hedging Instrument [Member] Cash Flow Hedging [Member] Interest Rate Swap [Member] USD ($) | Sep. 30, 2012 Designated as Hedging Instrument [Member] Cash Flow Hedging [Member] Interest Rate Swap [Member] USD ($) | Sep. 30, 2014 Designated as Hedging Instrument [Member] Cash Flow Hedging [Member] Interest Rate Swap June 2018 [Member] USD ($) | Sep. 30, 2014 Designated as Hedging Instrument [Member] Cash Flow Hedging [Member] Interest Rate Swap September 2015 [Member] USD ($) | Sep. 30, 2013 Designated as Hedging Instrument [Member] Cash Flow Hedging [Member] Interest Rate Swap September 2015 [Member] USD ($) | Sep. 30, 2014 Designated as Hedging Instrument [Member] Cash Flow Hedging [Member] Interest Rate Swap December 2014 [Member] USD ($) | Sep. 30, 2013 Designated as Hedging Instrument [Member] Cash Flow Hedging [Member] Interest Rate Swap December 2014 [Member] USD ($) | Sep. 30, 2013 Designated as Hedging Instrument [Member] Cash Flow Hedging [Member] Interest Rate Swap December 2013 [Member] USD ($) | Sep. 30, 2014 Designated as Hedging Instrument [Member] Cash Flow Hedging [Member] Foreign Exchange Option [Member] GBP (£) | Sep. 30, 2013 Designated as Hedging Instrument [Member] Cash Flow Hedging [Member] Foreign Exchange Option [Member] USD ($) | Sep. 30, 2013 Designated as Hedging Instrument [Member] Cash Flow Hedging [Member] Foreign Exchange Option [Member] BRL | Sep. 30, 2014 Not Designated as Hedging Instrument [Member] Foreign Exchange Forward [Member] United States of America, Dollars Long [Member] USD ($) | Sep. 30, 2013 Not Designated as Hedging Instrument [Member] Foreign Exchange Forward [Member] United States of America, Dollars Long [Member] USD ($) | Sep. 30, 2014 Not Designated as Hedging Instrument [Member] Foreign Exchange Forward [Member] United States of America, Dollars Short [Member] USD ($) | Sep. 30, 2013 Not Designated as Hedging Instrument [Member] Foreign Exchange Forward [Member] United States of America, Dollars Short [Member] USD ($) | Sep. 30, 2014 Not Designated as Hedging Instrument [Member] Foreign Exchange Forward [Member] Brazil, Brazil Real Long [Member] USD ($) | Sep. 30, 2014 Not Designated as Hedging Instrument [Member] Foreign Exchange Forward [Member] Brazil, Brazil Real Long [Member] BRL | Sep. 30, 2013 Not Designated as Hedging Instrument [Member] Foreign Exchange Forward [Member] Brazil, Brazil Real Long [Member] USD ($) | Sep. 30, 2013 Not Designated as Hedging Instrument [Member] Foreign Exchange Forward [Member] Brazil, Brazil Real Long [Member] BRL | Sep. 30, 2013 Not Designated as Hedging Instrument [Member] Foreign Exchange Forward [Member] Brazil, Brazil Real Short [Member] USD ($) | Sep. 30, 2013 Not Designated as Hedging Instrument [Member] Foreign Exchange Forward [Member] Brazil, Brazil Real Short [Member] BRL | Sep. 30, 2014 Not Designated as Hedging Instrument [Member] Options Held [Member] USD ($) | Sep. 30, 2013 Not Designated as Hedging Instrument [Member] Options Held [Member] USD ($)
Derivative financial instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective portion of derivatives before tax effect | $ 3,000,000 | $ (2,400,000) | $ (500,000) | $ (8,400,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective portion of derivatives expected to be reclassified from accumulated other comprehensive loss to interest expense, net | 4,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional Amount |  |  |  |  | 300,000,000 | 250,000,000 | 250,000,000 | 200,000,000 | 200,000,000 | 150,000,000 |  |  |  | 69,500,000 | 171,800,000 | 71,500,000 | 174,200,000 | 400,000 | 1,100,000 | 1,800,000 | 4,000,000 | 3,600,000 | 8,200,000 |  |
Fixed Rate (as a percent) |  |  |  |  | 1.63% | 0.95% | 0.95% | 0.68% | 0.68% | 0.55% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional principal of derivative exchange contracts |  |  |  |  |  |  |  |  |  |  | £ 0 | $ 900,000 | 2,100,000 |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0

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- Definition Aggregate notional amount of foreign currency derivatives to exchange foreign currencies. Notional amount refers to the number of currency units specified in the foreign currency derivative contract. + References No definition available. + Details
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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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- Definition Fixed interest rate related to the interest rate derivative. + References No definition available. + Details
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- Definition The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings. + References No definition available. + Details
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- Definition The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 + Details
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- Details
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