Financial Services (Schedule of Assets and Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Feb. 28, 2015	Nov. 30, 2014	Feb. 28, 2014	Nov. 30, 2013
Assets
Cash and cash equivalents	$ 548,079	$ 358,768	$ 306,450	$ 532,523
Receivables	143,697us-gaap_AccountsAndNotesReceivableNet	125,488us-gaap_AccountsAndNotesReceivableNet
Investments in unconsolidated joint ventures	73,502	79,441
Other assets	119,873us-gaap_OtherAssets	114,915us-gaap_OtherAssets
Total assets	4,989,857us-gaap_Assets	4,757,550us-gaap_Assets
Liabilities
Accounts payable and accrued expenses	559,147	582,598
Total liabilities	1,970us-gaap_FinancialServicesLiabilities	2,517us-gaap_FinancialServicesLiabilities
Financial services [Member]
Assets
Cash and cash equivalents	2,438	2,402	3,181
Receivables	1,024	1,738
Investments in unconsolidated joint ventures	6,563	6,149
Other assets	120	197
Total assets	10,145	10,486
Liabilities
Accounts payable and accrued expenses	$ 1,970	$ 2,517

Carrying amount as of the balance sheet date, net of allowance for doubtful accounts, of account and note receivables due from other than related parties.

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Sum of the carrying values as of the balance sheet date of obligations incurred through that date, including liabilities incurred and payable to vendors for goods and services received, taxes, interest, rent and utilities, compensation costs, payroll taxes and fringe benefits (other than pension and postretirement obligations), contractual rights and obligations, and statutory obligations.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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For entities that provide full or partial financing and servicing for customers supplementary to its major operations (such as a manufacturer or a homebuilder providing and servicing loans to buyers), represents the liabilities associated with such activities, including accounts payable and accrued liabilities.

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Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership.

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