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Supplemental Cash Flow Information - Supplemental Disclosure of Non-cash Activity (Details) (USD $) In Thousands, unless otherwise specified | 6 Months Ended
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Mar. 31, 2013 | Mar. 31, 2012
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] |  |
Increase (Decrease) in Debt due to Conversion of Convertible Debt and Tangible Equity for Common Stock | $ (9,402) | $ (55,308)
(Decrease) increase in obligations related to land not owned under option agreements | (1,501) | 871
Decrease in future land purchase rights | 0 | (11,651)
Contribution of future land purchase rights to unconsolidated entities | 0 | 11,651
Supplemental disclosure of cash activity: [Abstract] |  |
Interest payments | 48,944 | 60,145
Income tax payments | 121 | 518
Tax refunds received | $ 3,925 | $ 2,564

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- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3536-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 29 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 27 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. + Details
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