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Derivative Financial Instruments (Details) BRL in Millions, $ in Millions	12 Months Ended
	Sep. 30, 2014 USD ($)	Sep. 30, 2013 USD ($)	Sep. 30, 2012 USD ($)	Sep. 30, 2014 GBP (£)	Sep. 30, 2014 BRL	Sep. 30, 2014 USD ($)	Sep. 30, 2013 BRL	Sep. 30, 2013 USD ($)
Cash Flow Hedging | Interest rate swap agreements
Derivative financial instruments
Effective portion of derivatives before tax effect	$ 3.0
Effective portion of derivatives expected to be reclassified from accumulated other comprehensive loss to interest expense, net	4.8
Designated as Hedging Instrument | Cash Flow Hedging | Interest rate swap agreements
Derivative financial instruments
Effective portion of derivatives before tax effect	$ (2.4)	$ (0.5)	$ (8.4)
Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Swap June 2018
Derivative financial instruments
Notional Amount						$ 300.0
Fixed Rate (as a percent)				1.63%	1.63%	1.63%
Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Swap September 2015
Derivative financial instruments
Notional Amount						$ 250.0		$ 250.0
Fixed Rate (as a percent)				0.95%	0.95%	0.95%	0.95%	0.95%
Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Swap December 2014
Derivative financial instruments
Notional Amount						$ 200.0		$ 200.0
Fixed Rate (as a percent)				0.68%	0.68%	0.68%	0.68%	0.68%
Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Swap December 2013
Derivative financial instruments
Notional Amount								$ 150.0
Fixed Rate (as a percent)							0.55%	0.55%
Designated as Hedging Instrument | Cash Flow Hedging | Foreign Exchange Option
Derivative financial instruments
Notional principal of derivative exchange contracts				£ 0			BRL 2.1	$ 0.9
Not Designated as Hedging Instrument | Foreign currency forward contracts | United States of America, Dollars | Purchase
Derivative financial instruments
Notional Amount						$ 69.5		171.8
Not Designated as Hedging Instrument | Foreign currency forward contracts | United States of America, Dollars | Sell
Derivative financial instruments
Notional Amount						71.5		174.2
Not Designated as Hedging Instrument | Foreign currency forward contracts | Brazil, Brazil Real | Purchase
Derivative financial instruments
Notional Amount					BRL 1.1	0.4	4.0	1.8
Not Designated as Hedging Instrument | Foreign currency forward contracts | Brazil, Brazil Real | Sell
Derivative financial instruments
Notional Amount							BRL 8.2	3.6
Not Designated as Hedging Instrument | Options Held
Derivative financial instruments
Notional principal of derivative exchange contracts						$ 0.0		$ 0.0

X

- 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.

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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

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- Definition

Fixed interest rate related to the interest rate derivative.

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- Definition

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+ References

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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=35706170&loc=SL5624171-113959

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