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Inventory and Land Held for Sale (Schedule of Impaired Communities and Related Charges) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2011	Mar. 31, 2011	Jun. 30, 2010	Mar. 31, 2010	Jun. 30, 2011	Jun. 30, 2010
Inventory and Land Held for Sale
Number of Communities Impaired	6	1	16	10	6	16
Fair Value of Communities Impaired, Net of Impairment Charges	$ 6.7	$ 0.5	$ 35.1	$ 7.2	$ 6.7	$ 35.1
Impairment Charges	3.3	0.1	25.6	4.5
Impairment charges, total					$ 3.4	$ 30.1

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- Definition

Impairment charges recorded on communities during the period.

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- Definition

Fair value of communities that were impaired during the period, net of impairment charges.

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- Definition

Number Of Communities Impaired

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- Definition

Total Impairment Charges

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