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Fair Value Measurements (Tables) | 6 Months Ended
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Mar. 31, 2013
Fair Value Disclosures [Abstract] |
Schedule of fair value assets measured on a non-recurring basis | The following table presents our assets measured at fair value on a non-recurring basis for each hierarchy level and represents only those assets whose carrying values were adjusted to fair value during the six months ended March 31, 2013 and 2012:
(In thousands) | Level 1 |  | Level 2 |  | Level 3 |  | Total
Six Months Ended March 31, 2013 |  |  |  |  |  |  |
Land held for sale | — |  |  | — |  |  | $ | 2,013 |  |  | $ | 2,013 |
Six Months Ended March 31, 2012 |  |  |  |  |  |  |
Development projects in progress | — |  |  | — |  |  | $ | 9,669 |  |  | $ | 9,669 |
Land held for sale | — |  |  | — |  |  | $ | 1,600 |  |  | $ | 1,600 |
Schedule of carrying values and estimated fair values of other financial assets and liabilities | The carrying values and estimated fair values of other financial assets and liabilities were as follows:
(In thousands) | As of March 31, 2013 |  | As of September 30, 2012
| Carrying Amount |  | Fair Value |  | Carrying Amount |  | Fair Value
Senior Notes | $ | 1,223,485 |  |  | $ | 1,305,905 |  |  | $ | 1,201,067 |  |  | $ | 1,228,745 |
Mandatory Convertible Subordinated Notes | — |  |  | — |  |  | 9,402 |  |  | 7,465 |
Junior Subordinated Notes | 52,637 |  |  | 52,637 |  |  | 51,603 |  |  | 51,603 |
| $ | 1,276,122 |  |  | $ | 1,358,542 |  |  | $ | 1,262,072 |  |  | $ | 1,287,813 |

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- Definition Tabular disclosure of assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). Disclosures may include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 33 -Subparagraph a, b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19296-110258 + Details
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- Definition Tabular disclosure of information pertaining to carrying amount and estimated fair value of short-term and long-term debt instruments or arrangements, including but not limited to, identification of terms, features, and collateral requirements. + References No definition available. + Details
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