Fair Value Measurements (Schedule Of Changes In Fair Value Of Other Liabilities) (Details) (USD $) In Millions, unless otherwise specified		6 Months Ended
Sep. 30, 2011	Mar. 31, 2012 Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Balance at 30 September 2011	$ 51.0	$ 51.0
Expense included in interest expense		0.8
Payment to settle liability		(52.1)
Currency translation adjustment		0.3
Balance at 31 March 2012	$ 51.0

Pre tax adjustment that results from the process of translating subsidiary financial statements and foreign equity investments into functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains (losses). Includes gain (loss) on foreign currency forward exchange contracts. Includes foreign currency transactions designated as hedges of net investment in a foreign entity and intercompany foreign currency transactions that are of a long-term nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements. Includes the gain (loss) on a derivative instrument or nonderivative financial instrument that may give rise to a foreign currency transaction gain (loss) that has been designated and qualified as a hedging instrument for hedging of the foreign currency exposure of a net investment in a foreign operation.

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+ Details