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Supplemental Guarantor Information (Condensed Consolidating Balance Sheets) (Details) - USD ($) $ in Thousands | Nov. 30, 2016 | Nov. 30, 2015 | Nov. 30, 2014 | Nov. 30, 2013
--- | --- | --- | --- | ---
Assets |  |  |  |
Cash and cash equivalents | $ 593,000 | $ 560,341 | $ 358,768 | $ 532,523
Restricted cash | 0 | 9,344 |  |
Receivables | 231,665 | 247,998 |  |
Inventory, Operative Builders | 3,403,228 | 3,313,747 |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | 64,016 | 71,558 |  |
Deferred tax assets, net | 738,985 | 782,196 |  |
Other assets | 91,145 | 88,992 |  |
Investments in subsidiaries | 0 | 0 |  |
Total assets | 5,131,624 | 5,086,905 |  |
Due from Affiliates | 0 | 0 |  |
Liabilities and stockholders' equity |  |  |  |
Accounts payable, accrued expenses and other liabilities | 766,327 | 792,500 |  |
Notes payable | 2,640,149 | 2,601,754 |  |
Financial services | 2,003 | 1,817 |  |
Due to Affiliate | 0 | 0 |  |
Stockholder's equity | 1,723,145 | 1,690,834 | 1,595,910 | 536,086
Total liabilities and Stockholders' equity | 5,131,624 | 5,086,905 |  |
KB Home Corporate |  |  |  |
Assets |  |  |  |
Cash and cash equivalents | 463,100 | 444,850 | 303,280 | 476,847
Restricted cash | 0 | 9,344 |  |
Receivables | 4,807 | 39 |  |
Inventory, Operative Builders | 0 | 0 |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | 0 | 0 |  |
Deferred tax assets, net | 276,737 | 190,770 |  |
Other assets | 79,526 | 73,808 |  |
Investments in subsidiaries | 35,965 | 39,383 |  |
Total assets | 4,419,147 | 4,385,344 |  |
Due from Affiliates | 3,559,012 | 3,627,150 |  |
Liabilities and stockholders' equity |  |  |  |
Accounts payable, accrued expenses and other liabilities | 131,530 | 136,352 |  |
Notes payable | 2,548,112 | 2,540,980 |  |
Financial services | 0 | 0 |  |
Due to Affiliate | 16,360 | 17,178 |  |
Stockholder's equity | 1,723,145 | 1,690,834 |  |
Total liabilities and Stockholders' equity | 4,419,147 | 4,385,344 |  |
Guarantor Subsidiaries |  |  |  |
Assets |  |  |  |
Cash and cash equivalents | 100,439 | 96,741 | 36,412 | 37,330
Restricted cash | 0 | 0 |  |
Receivables | 135,915 | 145,022 |  |
Inventory, Operative Builders | 3,048,132 | 2,900,202 |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | 61,517 | 69,057 |  |
Deferred tax assets, net | 318,077 | 465,105 |  |
Other assets | 9,177 | 11,198 |  |
Investments in subsidiaries | 0 | 0 |  |
Total assets | 3,673,257 | 3,687,325 |  |
Due from Affiliates | 0 | 0 |  |
Liabilities and stockholders' equity |  |  |  |
Accounts payable, accrued expenses and other liabilities | 397,605 | 417,315 |  |
Notes payable | 66,927 | 35,664 |  |
Financial services | 0 | 0 |  |
Due to Affiliate | 3,208,725 | 3,234,346 |  |
Stockholder's equity | 0 | 0 |  |
Total liabilities and Stockholders' equity | 3,673,257 | 3,687,325 |  |
Non-Guarantor Subsidiaries |  |  |  |
Assets |  |  |  |
Cash and cash equivalents | 29,461 | 18,750 | 19,076 | 18,346
Restricted cash | 0 | 0 |  |
Receivables | 90,943 | 102,937 |  |
Inventory, Operative Builders | 355,096 | 413,545 |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | 2,499 | 2,501 |  |
Deferred tax assets, net | 144,171 | 126,321 |  |
Other assets | 2,442 | 3,986 |  |
Investments in subsidiaries | 0 | 0 |  |
Total assets | 731,259 | 782,872 |  |
Due from Affiliates | 97,062 | 102,103 |  |
Liabilities and stockholders' equity |  |  |  |
Accounts payable, accrued expenses and other liabilities | 237,192 | 238,833 |  |
Notes payable | 25,110 | 25,110 |  |
Financial services | 2,003 | 1,817 |  |
Due to Affiliate | 430,989 | 477,729 |  |
Stockholder's equity | 35,965 | 39,383 |  |
Total liabilities and Stockholders' equity | 731,259 | 782,872 |  |
Homebuilding [Member] |  |  |  |
Assets |  |  |  |
Cash and cash equivalents | 592,086 | 559,042 | 356,366 |
Total assets | 5,121,125 | 5,072,877 |  |
Liabilities and stockholders' equity |  |  |  |
Total Homebuilding | 3,406,476 | 3,394,254 |  |
Homebuilding [Member] | KB Home Corporate |  |  |  |
Assets |  |  |  |
Cash and cash equivalents | 463,100 | 444,850 |  |
Total assets | 824,170 | 718,811 |  |
Liabilities and stockholders' equity |  |  |  |
Total Homebuilding | 2,679,642 | 2,677,332 |  |
Homebuilding [Member] | Guarantor Subsidiaries |  |  |  |
Assets |  |  |  |
Cash and cash equivalents | 100,439 | 96,741 |  |
Total assets | 3,673,257 | 3,687,325 |  |
Liabilities and stockholders' equity |  |  |  |
Total Homebuilding | 464,532 | 452,979 |  |
Homebuilding [Member] | Non-Guarantor Subsidiaries |  |  |  |
Assets |  |  |  |
Cash and cash equivalents | 28,547 | 17,451 |  |
Total assets | 623,698 | 666,741 |  |
Liabilities and stockholders' equity |  |  |  |
Total Homebuilding | 262,302 | 263,943 |  |
Financial services [Member] |  |  |  |
Assets |  |  |  |
Cash and cash equivalents | 914 | 1,299 | 2,402 |
Receivables | 1,764 | 2,245 |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | 7,771 | 10,440 |  |
Other assets | 50 | 44 |  |
Total assets | 10,499 | 14,028 |  |
Liabilities and stockholders' equity |  |  |  |
Accounts payable, accrued expenses and other liabilities | 2,003 | 1,817 |  |
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 | 10,499 | 14,028 |  |
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 | (35,965) | (39,383) |  |
Total assets | (3,692,039) | (3,768,636) |  |
Due from Affiliates | (3,656,074) | (3,729,253) |  |
Liabilities and stockholders' equity |  |  |  |
Accounts payable, accrued expenses and other liabilities | 0 | 0 |  |
Notes payable | 0 | 0 |  |
Financial services | 0 | 0 |  |
Due to Affiliate | (3,656,074) | (3,729,253) |  |
Stockholder's equity | (35,965) | (39,383) |  |
Total liabilities and Stockholders' equity | (3,692,039) | (3,768,636) |  |
Consolidating Adjustments | Homebuilding [Member] |  |  |  |
Assets |  |  |  |
Cash and cash equivalents | 0 | 0 |  |
Total assets | 0 | 0 |  |
Liabilities and stockholders' equity |  |  |  |
Total Homebuilding | 0 | 0 |  |
Consolidating Adjustments | Financial services [Member] |  |  |  |
Assets |  |  |  |
Total assets | $ 0 | $ 0 |  |

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