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Supplemental Guarantor Information (Condensed Consolidating Statements of Operations) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Nov. 30, 2015 | Aug. 31, 2015 | May. 31, 2015 | Feb. 28, 2015 | Nov. 30, 2014 | Aug. 31, 2014 | May. 31, 2014 | Feb. 28, 2014 | Nov. 30, 2015 | Nov. 30, 2014 | Nov. 30, 2013
Condensed Consolidated Statements of Operations |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  | $ 985,783 | $ 843,157 | $ 622,969 | $ 580,121 | $ 796,041 | $ 589,214 | $ 565,007 | $ 450,687 | $ 3,032,030 | $ 2,400,949 | $ 2,097,130
Homebuilding: |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 3,020,987 | 2,389,643 | 2,084,978
Construction and land costs |  |  |  |  |  |  |  |  |  | (2,539,368) | (1,985,651) | (1,737,086)
Selling, general and administrative expenses |  |  |  |  |  |  |  |  |  | (342,998) | (288,023) | (255,808)
Operating income (loss) |  |  |  |  |  |  |  |  |  | 138,621 | 115,969 | 92,084
Interest income |  |  |  |  |  |  |  |  |  | 458 | 443 | 792
Interest Expense | [1] |  |  |  |  |  |  |  |  | (21,856) | (30,750) | (62,690)
Intercompany Interest Income (Expense) |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Equity in income (loss) of unconsolidated joint ventures |  |  |  |  |  |  |  |  |  | 2,488 | 1,427 | (933)
Pretax income (loss) |  | 69,917 | 33,954 | 12,673 | 10,499 | 28,601 | 28,661 | 26,924 | 10,763 | 127,043 | 94,949 | 38,363
Income tax benefit |  |  |  |  |  | 824,200 |  |  |  | (42,400) | 823,400 | 1,600
Income (Loss) from Subsidiaries, Net of Tax |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net income (loss) |  | $ 44,017 | $ 23,254 | $ 9,573 | $ 7,799 | $ 852,801 | $ 28,361 | $ 26,624 | $ 10,563 | 84,643 | 918,349 | 39,963
KB Home Corporate |  |  |  |  |  |  |  |  |  |  |  |
Condensed Consolidated Statements of Operations |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Homebuilding: |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Construction and land costs |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Selling, general and administrative expenses |  |  |  |  |  |  |  |  |  | (86,053) | (68,717) | (60,545)
Operating income (loss) |  |  |  |  |  |  |  |  |  | (86,053) | (68,717) | (60,545)
Interest income |  |  |  |  |  |  |  |  |  | 451 | 432 | 768
Interest Expense |  |  |  |  |  |  |  |  |  | (180,701) | (165,485) | (143,902)
Intercompany Interest Income (Expense) |  |  |  |  |  |  |  |  |  | 289,727 | 287,017 | 203,096
Equity in income (loss) of unconsolidated joint ventures |  |  |  |  |  |  |  |  |  | 0 | 0 |
Pretax income (loss) |  |  |  |  |  |  |  |  |  | 23,424 | 53,247 | (583)
Income tax benefit |  |  |  |  |  |  |  |  |  | 2,000 | 215,691 | 100
Income (Loss) from Subsidiaries, Net of Tax |  |  |  |  |  |  |  |  |  | 59,219 | 649,411 | 40,446
Net income (loss) |  |  |  |  |  |  |  |  |  | 84,643 | 918,349 | 39,963
Guarantor Subsidiaries |  |  |  |  |  |  |  |  |  |  |  |
Condensed Consolidated Statements of Operations |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 2,653,372 | 2,031,564 | 1,792,040
Homebuilding: |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 2,653,372 | 2,031,564 | 1,792,040
Construction and land costs |  |  |  |  |  |  |  |  |  | (2,209,472) | (1,673,916) | (1,480,822)
Selling, general and administrative expenses |  |  |  |  |  |  |  |  |  | (213,292) | (176,795) | (151,923)
Operating income (loss) |  |  |  |  |  |  |  |  |  | 230,608 | 180,853 | 159,295
Interest income |  |  |  |  |  |  |  |  |  | 6 | 9 | 18
Interest Expense |  |  |  |  |  |  |  |  |  | (6,184) | (6,056) | (5,199)
Intercompany Interest Income (Expense) |  |  |  |  |  |  |  |  |  | (109,208) | (127,191) | (102,172)
Equity in income (loss) of unconsolidated joint ventures |  |  |  |  |  |  |  |  |  | (1,803) | (2,549) |
Pretax income (loss) |  |  |  |  |  |  |  |  |  | 113,419 | 45,066 | 49,439
Income tax benefit |  |  |  |  |  |  |  |  |  | (42,700) | 551,203 | 1,800
Income (Loss) from Subsidiaries, Net of Tax |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net income (loss) |  |  |  |  |  |  |  |  |  | 70,719 | 596,269 | 51,239
Non-Guarantor Subsidiaries |  |  |  |  |  |  |  |  |  |  |  |
Condensed Consolidated Statements of Operations |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 378,658 | 369,385 | 305,090
Homebuilding: |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 367,615 | 358,079 | 292,938
Construction and land costs |  |  |  |  |  |  |  |  |  | (329,896) | (311,735) | (256,264)
Selling, general and administrative expenses |  |  |  |  |  |  |  |  |  | (43,653) | (42,511) | (43,340)
Operating income (loss) |  |  |  |  |  |  |  |  |  | (5,934) | 3,833 | (6,666)
Interest income |  |  |  |  |  |  |  |  |  | 1 | 2 | 6
Interest Expense |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Intercompany Interest Income (Expense) |  |  |  |  |  |  |  |  |  | (15,490) | (19,035) | (14,513)
Equity in income (loss) of unconsolidated joint ventures |  |  |  |  |  |  |  |  |  | (1) | 3,290 |
Pretax income (loss) |  |  |  |  |  |  |  |  |  | (9,800) | (3,364) | (10,493)
Income tax benefit |  |  |  |  |  |  |  |  |  | (1,700) | 56,506 | (300)
Income (Loss) from Subsidiaries, Net of Tax |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net income (loss) |  |  |  |  |  |  |  |  |  | (11,500) | 53,142 | (10,793)
Consolidating Adjustments |  |  |  |  |  |  |  |  |  |  |  |
Condensed Consolidated Statements of Operations |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Homebuilding: |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Construction and land costs |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Selling, general and administrative expenses |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Operating income (loss) |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Interest income |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Interest Expense |  |  |  |  |  |  |  |  |  | 165,029 | 140,791 | 86,411
Intercompany Interest Income (Expense) |  |  |  |  |  |  |  |  |  | (165,029) | (140,791) | (86,411)
Equity in income (loss) of unconsolidated joint ventures |  |  |  |  |  |  |  |  |  | 0 | 0 |
Pretax income (loss) |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income tax benefit |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income (Loss) from Subsidiaries, Net of Tax |  |  |  |  |  |  |  |  |  | (59,219) | (649,411) | (40,446)
Net income (loss) |  |  |  |  |  |  |  |  |  | (59,219) | (649,411) | (40,446)
Homebuilding [Member] |  |  |  |  |  |  |  |  |  |  |  |
Condensed Consolidated Statements of Operations |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 3,020,987 | 2,389,643 | 2,084,978
Homebuilding: |  |  |  |  |  |  |  |  |  |  |  |
Equity in income (loss) of unconsolidated joint ventures |  |  |  |  |  |  |  |  |  | (1,804) | 741 | (2,007)
Pretax income (loss) |  |  |  |  |  |  |  |  |  | 115,419 | 86,403 | 28,179
Homebuilding [Member] | KB Home Corporate |  |  |  |  |  |  |  |  |  |  |  |
Homebuilding: |  |  |  |  |  |  |  |  |  |  |  |
Equity in income (loss) of unconsolidated joint ventures |  |  |  |  |  |  |  |  |  |  |  | 0
Pretax income (loss) |  |  |  |  |  |  |  |  |  | 23,424 | 53,247 | (583)
Homebuilding [Member] | Guarantor Subsidiaries |  |  |  |  |  |  |  |  |  |  |  |
Homebuilding: |  |  |  |  |  |  |  |  |  |  |  |
Equity in income (loss) of unconsolidated joint ventures |  |  |  |  |  |  |  |  |  |  |  | (2,503)
Pretax income (loss) |  |  |  |  |  |  |  |  |  | 113,419 | 45,066 | 49,439
Homebuilding [Member] | Non-Guarantor Subsidiaries |  |  |  |  |  |  |  |  |  |  |  |
Homebuilding: |  |  |  |  |  |  |  |  |  |  |  |
Equity in income (loss) of unconsolidated joint ventures |  |  |  |  |  |  |  |  |  |  |  | 496
Pretax income (loss) |  |  |  |  |  |  |  |  |  | (21,424) | (11,910) | (20,677)
Homebuilding [Member] | Consolidating Adjustments |  |  |  |  |  |  |  |  |  |  |  |
Homebuilding: |  |  |  |  |  |  |  |  |  |  |  |
Equity in income (loss) of unconsolidated joint ventures |  |  |  |  |  |  |  |  |  |  |  | 0
Pretax income (loss) |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Financial services [Member] |  |  |  |  |  |  |  |  |  |  |  |
Condensed Consolidated Statements of Operations |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 11,043 | 11,306 | 12,152
Homebuilding: |  |  |  |  |  |  |  |  |  |  |  |
Operating income (loss) |  |  |  |  |  |  |  |  |  | 7,332 | 7,860 | 9,110
Equity in income (loss) of unconsolidated joint ventures |  |  |  |  |  |  |  |  |  | 4,292 | 686 | 1,074
Pretax income (loss) |  |  |  |  |  |  |  |  |  | 11,624 | 8,546 | 10,184
Financial services [Member] | KB Home Corporate |  |  |  |  |  |  |  |  |  |  |  |
Homebuilding: |  |  |  |  |  |  |  |  |  |  |  |
Pretax income (loss) |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Financial services [Member] | Guarantor Subsidiaries |  |  |  |  |  |  |  |  |  |  |  |
Homebuilding: |  |  |  |  |  |  |  |  |  |  |  |
Pretax income (loss) |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Financial services [Member] | Non-Guarantor Subsidiaries |  |  |  |  |  |  |  |  |  |  |  |
Homebuilding: |  |  |  |  |  |  |  |  |  |  |  |
Pretax income (loss) |  |  |  |  |  |  |  |  |  | 11,624 | 8,546 | 10,184
Financial services [Member] | Consolidating Adjustments |  |  |  |  |  |  |  |  |  |  |  |
Homebuilding: |  |  |  |  |  |  |  |  |  |  |  |
Pretax income (loss) |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | $ 0
[1] | Amounts for the year ended November 30, 2013 included losses on the early extinguishment of debt of $10.4 million associated with the purchase and retirement of certain senior notes ahead of their maturity.

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