Income Taxes (Reconciliation Of Unrecognized Tax Benefits) (Details) (USD $) In Millions	12 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Income Taxes [Abstract]
Balance at beginning of year	$ 197.8	$ 163.1	$ 154.7
Additions for tax positions of the current year	16.3	31.8	23.6
Additions for tax positions of prior years	5.7	12.9	36.3
Reductions for tax positions of prior years	(72.4)	(1.0)	(43.5)
Settlements	(15.6)		(4.9)
Statute of limitations expiration	(4.8)	(6.1)	(5.4)
Foreign currency translation	(0.6)	(2.9)	2.3
Balance at End of Year	$ 126.4	$ 197.8	$ 163.1

Unrecognized Tax Benefits Increase Resulting From Foreign Currency Translation

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The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.

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The gross amount of decreases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns.

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The gross amount of decreases in unrecognized tax benefits resulting from settlements with taxing authorities.

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The gross amount of increases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period, excluding amounts pertaining to examined tax returns.

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The gross amount of increases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns.

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The gross amount of decreases in unrecognized tax benefits resulting from lapses of the applicable statutes of limitations.

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