Supplemental Information (Other Income (Expense), Net) (Details) (USD $) In Millions	12 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Supplemental Information [Abstract]
Technology and royalty income	$ 24.3	$ 19.0	$ 19.5
Interest income	5.7	3.4	7.4
Foreign exchange	(8.6)	4.0	(3.8)
Sale of assets and investments	12.8	13.2	(3.0)
Amortization of intangibles	(5.5)	(8.4)	(10.1)
Government Grants	9.5
Other	(1.0)	7.5	13.0
Other income (expense), net	$ 37.2	$ 38.7	$ 23.0

Other income received from government grants related to certain research and development projects.

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Interest income from non-operating activities of the business.

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Items which arise from transactions and events not directly related to the company's principal income earnings activities. Composed of income and expense activity that is secondary to the company's main business pursuits and includes, for example: Technology and royalty income, Interest income, Foreign exchange (gain)/loss, (Gain)/loss on the sale or disposal of assets/investments, Amortization of intangibles and Insurance settlements, net of related expenses.

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Other income (expense) not otherwise itemized or categorized in the footnotes to the financial statements.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

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The aggregate foreign currency transaction gain (loss) (both realized and unrealized) included in determining net income for the reporting period. Excludes 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. For certain enterprises, primarily banks, that are dealers in foreign exchange, foreign currency transaction gains (losses) may be disclosed as dealer gains (losses).

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The gains (losses) included in results of operations resulting from the sale or disposal of other assets.

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Revenue earned during the period from the leasing or otherwise lending to a third party the entity's rights or title to certain property. Royalty revenue is derived from a percentage or stated amount of sales proceeds or revenue generated by the third party using the entity's property. Examples of property from which royalties may be derived include patents and oil and mineral rights.

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