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Commitments and Contingencies (Narrative) (Details) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Aug. 31, 2017 USD ($) | Nov. 30, 2018 USD ($) Home claim_filed | Nov. 30, 2017 USD ($) property | Nov. 30, 2016 USD ($) property | Nov. 30, 2015 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |  |
Impairment of Real Estate |  |  | $ 26,104,000 | $ 20,605,000 | $ 49,580,000 |
Operating Leases, Rent Expense, Net |  |  | $ 8,600,000 | 8,100,000 | 7,500,000 |
Minimum warranty on electrical and other building systems |  |  | 2 years |  |  |
Maximum Warranty on Electrical Heating Cooling Plumbing and Other Building Systems |  |  | 5 years |  |  |
Standard Product Warranty Accrual, Payments | [1] |  | $ 23,300,000 | $ 25,336,000 | $ 23,190,000 |
Number of Land Parcels or Communities Associated with Non Cash Inventory Impairment Charges | property |  |  |  | 13 | 10 |
Insurance Recoveries |  |  |  | $ 23,500,000 |  |
Loss Contingency, Receivable, Estimated Recovery from Third Party |  |  |  | 11,600,000 |  |
Commitments and Contingencies (Textual) [Abstract] |  |  |  |  |  |
Structural warranty provided by the company |  |  | 10 years |  |  |
Warranty for other components of a home |  |  | 1 year |  |  |
Company's warranty liability |  |  | $ 82,490,000 | 69,798,000 | $ 56,682,000 | $ 49,085,000
Company's estimated liabilities for construction defect |  |  | 176,841,000 | 177,695,000 | 158,584,000 | $ 173,011,000
Expenses associated with self-insurance | [2] |  | 20,436,000 | 20,371,000 | 24,808,000 |
Product Warranty Accrual, Preexisting, Increase (Decrease) |  |  | 1,800,000 | 0 | (652,000) |
Performance bonds |  |  | 689,300,000 | 606,700,000 |  |
Letters of Credit Outstanding, Amount |  |  | 28,000,000 | 37,600,000 |  |
Non refundable deposits related to land option and other similar contracts |  |  | 53,830,000 | 64,702,000 |  |
Aggregate Purchase Price Associated with Land Option and Other Similar Contracts |  |  | $ 1,371,238,000 | 1,094,087,000 |  |
Damages from Product Defects [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Minimum Number of Affected Homes for Construction Defect Claims | Home |  |  | 2 |  |  |
Water Intrusion [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Standard Product Warranty Accrual, Payments |  |  |  |  | 2,300,000 |
Reclassification of warranty recoveries to receivables |  |  | $ 0 | 0 | $ 2,151,000 |
Self Insurance [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Reclassification of warranty recoveries to receivables |  |  | 56,900,000 | 71,300,000 |  |
Warranty and Other [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Reclassification of warranty recoveries to receivables |  |  | $ 4,800,000 | 4,100,000 |  |
Northern California Townhome Community [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Loss Contingency, Damages Sought, Value |  | $ 100,000,000 |  |  |  |
Chapter 558 of the Florida Statutes [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Loss Contingency, New Claims Filed, Number | claim_filed |  |  | 500 |  |  |
Minimum |  |  |  |  |  |
Commitments and Contingencies (Textual) [Abstract] |  |  |  |  |  |
Noncancelable operating leases, term |  |  | 3 years |  |  |
Maximum |  |  |  |  |  |
Commitments and Contingencies (Textual) [Abstract] |  |  |  |  |  |
Noncancelable operating leases, term |  |  | 5 years |  |  |
LOC Facilities [Member] |  |  |  |  |  |
Commitments and Contingencies (Textual) [Abstract] |  |  |  |  |  |
Letters of Credit Outstanding, Amount |  |  | $ 0 | $ 0 |  |
Line of Credit Facility, Expiration Period |  |  | 1 year |  |  |
[1] | Payments for 2016 included $2.3 million to repair homes affected by water intrusion-related issues in certain of our communities in central and southwest Florida.
[2] | These expenses are included in selling, general and administrative expenses and are largely offset by contributions from independent subcontractors participating in the wrap-up policy

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