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Income Taxes (Details 4) (USD $) In Millions, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Dec. 31, 2011 | Dec. 31, 2010
Valuation Allowance |  |
Valuation allowance | $ 232.7 | $ 385.8
Tax benefit from the release of a valuation allowance against a deferred tax asset in a Luxembourg | 129.5 |
Net operating losses in Luxembourg subsidiaries |  |
Valuation Allowance |  |
Valuation allowance | 225.5 | 379.6
Number of Luxembourg domiciled subsidiaries related to which tax benefit is recorded from release of valuation allowances against deferred tax assets | 2 |
Term of longest dated note of notes having staggered maturity dates (in years) | 30 |
U.S. losses and other federal deferred tax benefits |  |
Valuation Allowance |  |
Valuation allowance | $ 6.9 | $ 6.2

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- Definition The sum of the portions of deferred tax assets as of the balance sheet date for which, based on the weight of available evidence, it is more likely than not will not be realized through future reductions of tax-based income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 17 -Subparagraph e -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 43-49 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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- Definition Represents the number of subsidiaries related to which tax benefit recorded from the release of valuation allowance against deferred tax asset. + References No definition available. + Details
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