Derivative Instruments and Fair Value Measurments (Details 2) (USD $) In Millions	Sep. 30, 2011	Sep. 30, 2010
Summary of the carrying value and fair value of long-term debt
Long-term debt, Carrying Value	$ 905.0	$ 904.9
Long-term debt, Fair Value	1,125.4	1,073.8
Derivative Instruments and Fair Value Measurement (Textuals) [Abstract]
Notional values of forward exchange contracts	725.1
Notional values of forward exchange contracts designated as cash flow hedges	521.6
Foreign denominated debt designated as net investment hedges	14.1
Net unrealized gains (losses) on cash flow hedges to be reclassified into earnings during the next 12 months	10.0
Net unrealized gains (losses) on cash flow hedges to be reclassified into earnings during the next 12 months, net of tax	$ 6.2

Derivative Instruments and Fair Value Measurement Textuals.

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The estimated net amount of unrealized gains (losses) on foreign currency cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months, net of tax.

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- Definition

The estimated net amount of unrealized gains or losses on foreign currency cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 45

-Subparagraph b(2)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (c)

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year (current maturities) or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

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- Definition

Fair value of all derivative liabilities designated as hedges of net investment in foreign operations.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4B

-Subparagraph (c)(1)

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-Publisher FASB

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-Paragraph 44C

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Aggregate notional amount of all foreign currency derivatives designated as hedging instruments in cash flow hedges. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5580258-113959

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-Name Accounting Standards Codification

-Glossary Notional Amount

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-Name Accounting Standards Codification

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-Paragraph 1A

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Aggregate notional amount of foreign currency exchange rate derivatives. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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