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Supplemental Guarantor Information (Condensed Consolidating Balance Sheets) (Details) - USD ($) $ in Thousands | Nov. 30, 2015 | Nov. 30, 2014 | Nov. 30, 2013 | Nov. 30, 2012
--- | --- | --- | --- | ---
Assets |  |  |  |
Cash and cash equivalents | $ 560,341 | $ 358,768 | $ 532,523 | $ 525,688
Restricted cash | 9,344 | 27,235 |  |
Receivables | 152,682 | 125,488 |  |
Inventory, Operative Builders | 3,313,747 | 3,218,387 |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | 71,558 | 79,441 |  |
Deferred tax assets, net | 782,196 | 825,232 |  |
Other assets | 112,774 | 114,915 |  |
Investments in subsidiaries | 0 | 0 |  |
Total assets | 5,015,371 | 4,757,550 |  |
Due from Affiliates | 0 | 0 |  |
Liabilities and stockholders' equity |  |  |  |
Accounts payable, accrued expenses and other liabilities | 697,184 | 582,598 |  |
Notes payable | 2,625,536 | 2,576,525 |  |
Financial services | 1,817 | 2,517 |  |
Due to Affiliate | 0 | 0 |  |
Stockholder's equity | 1,690,834 | 1,595,910 | 536,086 | 376,806
Total liabilities and Stockholders' equity | 5,015,371 | 4,757,550 |  |
KB Home Corporate |  |  |  |
Assets |  |  |  |
Cash and cash equivalents | 444,850 | 303,280 | 476,847 | 457,007
Restricted cash | 9,344 | 27,235 |  |
Receivables | 39 | 15 |  |
Inventory, Operative Builders | 0 | 0 |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | 0 | 0 |  |
Deferred tax assets, net | 190,770 | 215,923 |  |
Other assets | 97,590 | 99,099 |  |
Investments in subsidiaries | 39,383 | 39,356 |  |
Total assets | 4,409,126 | 4,267,520 |  |
Due from Affiliates | 3,627,150 | 3,582,612 |  |
Liabilities and stockholders' equity |  |  |  |
Accounts payable, accrued expenses and other liabilities | 136,352 | 138,298 |  |
Notes payable | 2,564,762 | 2,513,165 |  |
Financial services | 0 | 0 |  |
Due to Affiliate | 17,178 | 20,147 |  |
Stockholder's equity | 1,690,834 | 1,595,910 |  |
Total liabilities and Stockholders' equity | 4,409,126 | 4,267,520 |  |
Guarantor Subsidiaries |  |  |  |
Assets |  |  |  |
Cash and cash equivalents | 98,281 | 37,112 | 37,957 | 49,218
Restricted cash | 0 | 0 |  |
Receivables | 148,338 | 120,857 |  |
Inventory, Operative Builders | 2,979,617 | 2,847,415 |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | 69,057 | 76,940 |  |
Deferred tax assets, net | 501,454 | 552,653 |  |
Other assets | 11,783 | 13,136 |  |
Investments in subsidiaries | 0 | 0 |  |
Total assets | 3,808,530 | 3,648,113 |  |
Due from Affiliates | 0 | 0 |  |
Liabilities and stockholders' equity |  |  |  |
Accounts payable, accrued expenses and other liabilities | 442,529 | 317,550 |  |
Notes payable | 60,774 | 63,360 |  |
Financial services | 0 | 0 |  |
Due to Affiliate | 3,305,227 | 3,267,203 |  |
Stockholder's equity | 0 | 0 |  |
Total liabilities and Stockholders' equity | 3,808,530 | 3,648,113 |  |
Non-Guarantor Subsidiaries |  |  |  |
Assets |  |  |  |
Cash and cash equivalents | 17,210 | 18,376 | 17,719 | 19,463
Restricted cash | 0 | 0 |  |
Receivables | 4,305 | 4,616 |  |
Inventory, Operative Builders | 334,130 | 370,972 |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | 2,501 | 2,501 |  |
Deferred tax assets, net | 89,972 | 56,656 |  |
Other assets | 3,401 | 2,680 |  |
Investments in subsidiaries | 0 | 0 |  |
Total assets | 566,351 | 576,804 |  |
Due from Affiliates | 102,103 | 112,919 |  |
Liabilities and stockholders' equity |  |  |  |
Accounts payable, accrued expenses and other liabilities | 118,303 | 126,750 |  |
Notes payable | 0 | 0 |  |
Financial services | 1,817 | 2,517 |  |
Due to Affiliate | 406,848 | 408,181 |  |
Stockholder's equity | 39,383 | 39,356 |  |
Total liabilities and Stockholders' equity | 566,351 | 576,804 |  |
Consolidating Adjustments |  |  |  |
Assets |  |  |  |
Cash and cash equivalents | 0 | 0 | 0 | $ 0
Restricted cash | 0 | 0 |  |
Receivables | 0 | 0 |  |
Inventory, Operative Builders | 0 | 0 |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | 0 | 0 |  |
Deferred tax assets, net | 0 | 0 |  |
Other assets | 0 | 0 |  |
Investments in subsidiaries | (39,383) | (39,356) |  |
Total assets | (3,768,636) | (3,734,887) |  |
Due from Affiliates | (3,729,253) | (3,695,531) |  |
Liabilities and stockholders' equity |  |  |  |
Accounts payable, accrued expenses and other liabilities | 0 | 0 |  |
Notes payable | 0 | 0 |  |
Financial services | 0 | 0 |  |
Due to Affiliate | (3,729,253) | (3,695,531) |  |
Stockholder's equity | (39,383) | (39,356) |  |
Total liabilities and Stockholders' equity | (3,768,636) | (3,734,887) |  |
Homebuilding [Member] |  |  |  |
Assets |  |  |  |
Cash and cash equivalents | 559,042 | 356,366 | 530,095 |
Total assets | 5,001,343 | 4,747,064 |  |
Liabilities and stockholders' equity |  |  |  |
Total Homebuilding | 3,322,720 | 3,159,123 |  |
Homebuilding [Member] | KB Home Corporate |  |  |  |
Assets |  |  |  |
Cash and cash equivalents | 444,850 | 303,280 |  |
Total assets | 742,593 | 645,552 |  |
Liabilities and stockholders' equity |  |  |  |
Total Homebuilding | 2,701,114 | 2,651,463 |  |
Homebuilding [Member] | Guarantor Subsidiaries |  |  |  |
Assets |  |  |  |
Cash and cash equivalents | 98,281 | 37,112 |  |
Total assets | 3,808,530 | 3,648,113 |  |
Liabilities and stockholders' equity |  |  |  |
Total Homebuilding | 503,303 | 380,910 |  |
Homebuilding [Member] | Non-Guarantor Subsidiaries |  |  |  |
Assets |  |  |  |
Cash and cash equivalents | 15,911 | 15,974 |  |
Total assets | 450,220 | 453,399 |  |
Liabilities and stockholders' equity |  |  |  |
Total Homebuilding | 118,303 | 126,750 |  |
Homebuilding [Member] | Consolidating Adjustments |  |  |  |
Assets |  |  |  |
Cash and cash equivalents | 0 | 0 |  |
Total assets | 0 | 0 |  |
Liabilities and stockholders' equity |  |  |  |
Total Homebuilding | 0 | 0 |  |
Financial services [Member] |  |  |  |
Assets |  |  |  |
Cash and cash equivalents | 1,299 | 2,402 | $ 2,428 |
Receivables | 2,245 | 1,738 |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | 10,440 | 6,149 |  |
Other assets | 44 | 197 |  |
Total assets | 14,028 | 10,486 |  |
Liabilities and stockholders' equity |  |  |  |
Accounts payable, accrued expenses and other liabilities | 1,817 | 2,517 |  |
Financial services [Member] | KB Home Corporate |  |  |  |
Assets |  |  |  |
Total assets | 0 | 0 |  |
Financial services [Member] | Guarantor Subsidiaries |  |  |  |
Assets |  |  |  |
Total assets | 0 | 0 |  |
Financial services [Member] | Non-Guarantor Subsidiaries |  |  |  |
Assets |  |  |  |
Total assets | 14,028 | 10,486 |  |
Financial services [Member] | Consolidating Adjustments |  |  |  |
Assets |  |  |  |
Total assets | $ 0 | $ 0 |  |

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