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Supplemental Cash Flow Information - Supplemental Disclosure of Non-cash Activity (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
(Decrease) increase in obligations related to land not owned under option agreements	$ (1,162)	$ 1,485
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	39,024	50,733
Income tax payments	15	179
Tax refunds received	$ 3,925	$ 1,966

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Contribution of Future Land Purchase Rights to Unconsolidated Joint Venture

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Increase (Decrease) in Obligations Related to Land Not Owned Under Option Agreements

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.

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