Income Taxes (Details Textual) (USD $)	3 Months Ended	12 Months Ended
	Nov. 30, 2014	Nov. 30, 2014	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2011
Income Tax Contingency [Line Items]
Future Income From Continuing Operations Before Income Taxes		$ 2,000,000,000
Cumulative Earnings (Deficit)	149,800,000	149,800,000
Income Taxes (Textual) [Abstract]
Income tax benefit	824,200,000	823,400,000	1,600,000	20,100,000
Income Taxes Receivable, Current			1,400,000
Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions			1,000,000
Deferred income taxes		(825,232,000)	0	1,152,000
Deferred Tax Assets, Net	(825,232,000)	(825,232,000)	0
State and Local Income Tax Expense (Benefit), Continuing Operations			800,000
Net Increase in valuation allowance recorded against net deferred tax assets	(825,200,000)		20,700,000	(32,300,000)
Period for Carry forward of tax benefits related to deferred tax assets		20 years
Deferred Tax Assets, Operating Loss Carryforwards, State and Local, Expired		3,900,000
Deferred Tax Assets, Tax Credit Carryforwards	87,300,000	87,300,000
Accumulated Deferred Investment Tax Credit	3,200,000	3,200,000
Valuation allowance	(41,150,000)	(41,150,000)	(859,440,000)
Unrecognized tax benefits that if recognized would affect the Company's annual effective tax rate	100,000	100,000	300,000	1,300,000
Total accrued interest and penalties related to unrecognized income tax benefits	100,000	100,000	300,000
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	200,000	200,000	200,000
Unrecognized Tax Benefits	206,000	206,000	206,000	1,671,000	1,899,000
Income taxes refunded		1,728,000	61,000	22,342,000
Valuation allowance against net deferred tax assets	41,150,000	41,150,000	859,440,000
Total deferred tax assets	1,000,996,000	1,000,996,000	150,991,000
Gross Unrecognized Tax Benefits Including Interest and Penalties	300,000	300,000
Maximum
Income Taxes (Textual) [Abstract]
Tax Credit Carryforward, Expiration Date		Dec. 31, 2034
Anticipated Decrease in Unrecognized Tax Benefit During Twelve Months Following Current Reporting Date	100,000	100,000
Minimum
Income Taxes (Textual) [Abstract]
Tax Credit Carryforward, Expiration Date		Dec. 31, 2015
Anticipated Decrease in Unrecognized Tax Benefit During Twelve Months Following Current Reporting Date	0	0
Investment Tax Credit Carryforward, Expiration in 2026 [Member]
Income Taxes (Textual) [Abstract]
Accumulated Deferred Investment Tax Credit	2,400,000	2,400,000
Investment Tax Credit Carryforward, Expiration in 2027 [Member]
Income Taxes (Textual) [Abstract]
Accumulated Deferred Investment Tax Credit	800,000	800,000
Foreign Investment Tax Credit Carryforward, Expiration in 2015 [Member]
Income Taxes (Textual) [Abstract]
Deferred Tax Assets, Tax Credit Carryforwards, Foreign	500,000	500,000
Foreign Investment Tax Credit Carryforward, Expiration in 2016 [Member]
Income Taxes (Textual) [Abstract]
Deferred Tax Assets, Tax Credit Carryforwards, Foreign	14,000,000	14,000,000
State and Local Jurisdiction [Member]
Income Taxes (Textual) [Abstract]
Operating Loss Carryforwards	160,700,000	160,700,000
State and Local Jurisdiction [Member] | Maximum
Income Taxes (Textual) [Abstract]
Operating Loss Carryforwards, Expiration Date		Dec. 31, 2033
State and Local Jurisdiction [Member] | Minimum
Income Taxes (Textual) [Abstract]
Operating Loss Carryforwards, Expiration Date		Dec. 31, 2015
Internal Revenue Service (IRS) [Member]
Income Taxes (Textual) [Abstract]
Operating Loss Carryforwards	$ 298,700,000	$ 298,700,000
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