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Inventory Impairments and Land Option Cost Write-Offs (Details) - Homebuilding [Member] - USD ($) $ in Millions | 3 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014
Inventory [Line Items] |  |
Carrying value of communities with impairment indicators | $ 249.3 |
Impairment charges | 0.5 | $ 3.8
Write-offs (recoveries) of earnest money deposits and pre-acquisition costs | $ 1.5 | $ 2.2

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- Definition The net write-off or recovery of earnest money deposits and pre-acquisition costs related to land option contracts during the period. + References No definition available. + Details
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- Definition Charge to cost of goods sold that represents the reduction of the carrying amount of inventory, generally attributable to obsolescence or market conditions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28360613&loc=d3e4542-108314 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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