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Fair Value Disclosures (Details Textual) (USD $)	3 Months Ended			12 Months Ended
	Nov. 30, 2014	Aug. 31, 2014	Nov. 30, 2013	Nov. 30, 2014	Nov. 30, 2013	Nov. 30, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of Real Estate	$ 34,200,000us-gaap_ImpairmentOfRealEstate	$ 3,400,000us-gaap_ImpairmentOfRealEstate	$ 400,000us-gaap_ImpairmentOfRealEstate	$ 37,628,000us-gaap_ImpairmentOfRealEstate	$ 391,000us-gaap_ImpairmentOfRealEstate	$ 28,107,000us-gaap_ImpairmentOfRealEstate
Inventory Impacted by Pretax Noncash Inventory Impairment Charges, Carrying Value	68,200,000kbh_InventoryImpactedbyPretaxNoncashInventoryImpairmentChargesCarryingValue		1,500,000kbh_InventoryImpactedbyPretaxNoncashInventoryImpairmentChargesCarryingValue	68,200,000kbh_InventoryImpactedbyPretaxNoncashInventoryImpairmentChargesCarryingValue	1,500,000kbh_InventoryImpactedbyPretaxNoncashInventoryImpairmentChargesCarryingValue
Estimate of Fair Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 30,600,000us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember		$ 1,100,000us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember	$ 30,600,000us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember	$ 1,100,000us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember	$ 39,900,000us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_EstimateOfFairValueFairValueDisclosureMember

X

- Definition

Inventory Impacted by Pretax Noncash Inventory Impairment Charges, Carrying Value

+ References

No definition available.

+ Details

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X

- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

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X

- Definition

The charge against earnings in the period to reduce the carrying amount of real property to fair value.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2921-110230

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