Supplemental Information (Debt) (Narrative) (Details) In Millions, unless otherwise specified	6 Months Ended	4 Months Ended
Mar. 31, 2013 Eurobond 3.75% [Member] USD ($)	Mar. 31, 2013 Eurobond 3.75% [Member] EUR (€)	Mar. 31, 2013 Multicurrency Facility [Member] USD ($)	Feb. 04, 2013 Senior Note 2.75% [Member] USD ($)
Debt Instrument [Line Items]
Amount classified as long-term debt based on ability and intent to refinance	$ 385	€ 300
Interest rate of debt, stated percentage	3.75%	3.75%		2.75%
Debt instrument maturity, month and year	November 2013	November 2013
Committed credit facility			2,170.0
Committed credit facility maturity, month and year			June 2015
Debt instrument, issuance date				Feb. 04, 2013
Senior note				$ 400.0
Debt instrument maturity date				Feb. 03, 2023

Month and year outstanding debt instruments are required to be repaid.

No definition available.

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- Definition

Date credit facility terminates in string format

+ References

No definition available.

+ Details

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- Definition

Interest rate stated in the contractual debt agreement.

+ References

+ Details

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- Definition

Date the debt instrument was issued, in CCYY-MM-DD format.

+ References

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- Details

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ 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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-Topic 210

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-Section S99

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-Subparagraph (SX 210.5-02.22(a)(2))

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 2, 4

-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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-Number 210

-Section 02

-Paragraph 19, 22

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

+ References

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

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-SubTopic 210

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-Number 210

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- Definition

Amount of a short-term obligation that has been excluded from current liabilities in the balance sheet because of a refinancing of the obligation.

+ References

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

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-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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-Topic 470

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-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1927-112601

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