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Mortgages and Notes Payable (Details) (USD $) In Thousands, unless otherwise specified	Feb. 29, 2012	Nov. 30, 2011
Mortgages and Notes Payable
Mortgages and notes payable	$ 1,587,414	$ 1,583,571
Mortgages and land contracts due to land sellers and other loans [Member]
Mortgages and Notes Payable
Mortgages and notes payable	23,269	24,984
Senior notes due 2014 at 5 3/4% [Member]
Mortgages and Notes Payable
Mortgages and notes payable	193,452	249,647
Senior notes due 2015 at 5 7/8% [Member]
Mortgages and Notes Payable
Mortgages and notes payable	169,626	299,273
Senior notes due 2015 at 6 1/4% [Member]
Mortgages and Notes Payable
Mortgages and notes payable	296,171	449,795
Senior notes due 2017 at 9.10% [Member]
Mortgages and Notes Payable
Mortgages and notes payable	261,001	260,865
Senior notes due 2018 at 7 1/4% [Member]
Mortgages and Notes Payable
Mortgages and notes payable	299,037	299,007
Senior notes due 2020 at 8.00% [Member]
Mortgages and Notes Payable
Mortgages and notes payable	$ 344,858

X

- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of all notes and loans payable (with maturities initially due after one year or beyond the operating cycle if longer).

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 7

-Section 03

-Paragraph 16



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

Name:	us-gaap_NotesAndLoansPayable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_NotesAndLoansPayableAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration