Joint Ventures (Details) (USD $)	3 Months Ended	6 Months Ended
Mar. 31, 2013	Apr. 01, 2012	Mar. 31, 2013	Apr. 01, 2012	Sep. 30, 2012
Aggregate revenue of consolidated joint ventures	$ 641,999,000	$ 624,345,000	$ 1,300,544,000	$ 1,306,972,000
Unconsolidated Joint Ventures
Equity in earnings from unconsolidated joint ventures	1,300,000	600,000	1,929,000	1,553,000
Carrying value of assets of unconsolidated joint ventures	20,400,000		20,400,000		19,000,000
Carrying value of liabilities of unconsolidated joint ventures	16,900,000		16,900,000		15,700,000
Consolidated Joint Ventures
Aggregate revenue of consolidated joint ventures	3,000,000	4,500,000	7,000,000	9,000,000
Cash and cash equivalent of consolidated joint ventures	$ 1,500,000		$ 1,500,000		$ 1,600,000

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

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Reference 6: http://www.xbrl.org/2003/role/presentationRef

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Reference 7: http://www.xbrl.org/2003/role/presentationRef

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Reference 8: http://www.xbrl.org/2003/role/presentationRef

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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