Income Taxes (Deferred Tax Assets And Liabilities Included In Consolidated Financials) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Sep. 30, 2011
Deferred Tax Assets [Abstract]
Other receivables and current assets	$ 129.0	$ 103.1
Other noncurrent assets	73.7	123.6
Total Deferred Tax Assets	202.7	226.7
Deferred Tax Liabilities [Abstract]
Payables and accrued liabilities	7.6	5.4
Deferred income taxes	670.8	558.2
Total Deferred Tax Liabilities	678.4	563.6
Net Deferred Income Tax Liability	$ 475.7	$ 336.9

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred income.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences expected to be realized or consumed within one year or operating cycle, if longer.

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Amount of deferred tax liability attributable to taxable temporary differences, net of deferred tax asset attributable to deductible temporary differences and carryforwards net of valuation allowances expected to be realized or consumed within one year or operating cycle, if longer.

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