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Income Taxes (Details Textual) - USD ($) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Nov. 30, 2014 | Nov. 30, 2016 | Nov. 30, 2015 | Nov. 30, 2014 | Nov. 30, 2013
Income Tax Contingency [Line Items] |  |  |  |  |
Income Tax Credits and Adjustments |  | $ 15,200,000 | $ 5,600,000 |  |
Effective Income Tax Rate Reconciliation, Percent |  | (29.30%) | (33.40%) | 867.20% |
Future Income From Continuing Operations Before Income Taxes |  | $ 1,800,000,000 |  |  |
Income Taxes (Textual) [Abstract] |  |  |  |  |
Income tax benefit (expense) | $ 824,200,000 | (43,700,000) | $ (42,400,000) | $ 823,400,000 |
Deferred income taxes |  | 43,211,000 | 43,036,000 | (825,232,000) |
Deferred Tax Assets, Net |  | (763,800,000) | (820,000,000) |  |
Net Increase in valuation allowance recorded against net deferred tax assets |  | $ 13,000,000 | 3,400,000 |  |
Period for Carry forward of tax benefits related to deferred tax assets |  | 20 years |  |  |
Deferred Tax Assets, Operating Loss Carryforwards, State and Local, Expired |  | $ 500,000 | 1,700,000 |  |
Deferred Tax Assets, Tax Credit Carryforwards |  | 104,900,000 |  |  |
Accumulated Deferred Investment Tax Credit |  | 3,200,000 |  |  |
Valuation allowance | (41,200,000) | (24,800,000) | (37,782,000) | (41,200,000) |
Unrecognized tax benefits that if recognized would affect the Company's annual effective tax rate | 100,000 | 100,000 | 100,000 | 100,000 |
Total accrued interest and penalties related to unrecognized income tax benefits |  | 0 | 0 |  |
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit |  | 0 | 0 |  |
Unrecognized Tax Benefits | 206,000 | 56,000 | 56,000 | 206,000 | $ 206,000
Income taxes refunded |  | 550,000 | 11,000 | 1,728,000 |
Valuation allowance against net deferred tax assets | $ 41,200,000 | 24,800,000 | 37,782,000 | $ 41,200,000 |
Total deferred tax assets |  | 921,588,000 | $ 961,666,000 |  |
Gross Unrecognized Tax Benefits Including Interest and Penalties |  | $ 100,000 |  |  |
Maximum |  |  |  |  |
Income Taxes (Textual) [Abstract] |  |  |  |  |
Tax Credit Carryforward, Expiration Date |  | Dec. 31, 2036 |  |  |
Anticipated Decrease in Unrecognized Tax Benefit During Twelve Months Following Current Reporting Date |  | $ 100,000 |  |  |
Minimum |  |  |  |  |
Income Taxes (Textual) [Abstract] |  |  |  |  |
Tax Credit Carryforward, Expiration Date |  | Dec. 31, 2026 |  |  |
Anticipated Decrease in Unrecognized Tax Benefit During Twelve Months Following Current Reporting Date |  | $ 0 |  |  |
Investment Tax Credit Carryforward, Expiration in 2026 [Member] |  |  |  |  |
Income Taxes (Textual) [Abstract] |  |  |  |  |
Accumulated Deferred Investment Tax Credit |  | 2,400,000 |  |  |
Investment Tax Credit Carryforward, Expiration in 2027 [Member] |  |  |  |  |
Income Taxes (Textual) [Abstract] |  |  |  |  |
Accumulated Deferred Investment Tax Credit |  | 800,000 |  |  |
State and Local Jurisdiction [Member] |  |  |  |  |
Income Taxes (Textual) [Abstract] |  |  |  |  |
Operating Loss Carryforwards |  | $ 146,100,000 |  |  |
State and Local Jurisdiction [Member] | Maximum |  |  |  |  |
Income Taxes (Textual) [Abstract] |  |  |  |  |
Operating Loss Carryforwards, Expiration Date |  | Dec. 31, 2036 |  |  |
State and Local Jurisdiction [Member] | Minimum |  |  |  |  |
Income Taxes (Textual) [Abstract] |  |  |  |  |
Operating Loss Carryforwards, Expiration Date |  | Dec. 31, 2017 |  |  |
Internal Revenue Service (IRS) [Member] |  |  |  |  |
Income Taxes (Textual) [Abstract] |  |  |  |  |
Operating Loss Carryforwards |  | $ 204,200,000 |  |  |
Internal Revenue Service (IRS) [Member] | Maximum |  |  |  |  |
Income Taxes (Textual) [Abstract] |  |  |  |  |
Operating Loss Carryforwards, Expiration Date |  | Dec. 31, 2033 |  |  |
Internal Revenue Service (IRS) [Member] | Minimum |  |  |  |  |
Income Taxes (Textual) [Abstract] |  |  |  |  |
Operating Loss Carryforwards, Expiration Date |  | Dec. 31, 2030 |  |  |

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