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Commitments and Contingencies (Changes in the Warranty Liability) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
May 31, 2018 | May 31, 2017 | May 31, 2018 | May 31, 2017 | Feb. 28, 2018 | Nov. 30, 2017 | Feb. 28, 2017 | Nov. 30, 2016
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Self Insurance Reserve |  | $ 176,715 | $ 156,505 | $ 176,715 | $ 156,505 | $ 180,695 | $ 177,695 | $ 159,882 | $ 158,584
Expenses Associated with Self Insurance | [1] | 4,309 | 3,598 | 8,710 | 8,238 |  |  |  |
Payments, Net of Recoveries for Self Insurance |  | (1,277) | (2,720) | (2,642) | (4,760) |  |  |  |
Changes in the Warranty Liability |  |  |  |  |  |  |  |  |
Balance at beginning of period |  | 71,845 | 57,710 | 69,798 | 56,682 |  |  |  |
Warranties issued |  | 9,889 | 8,784 | 17,653 | 15,924 |  |  |  |
Payments |  | (5,330) | (6,457) | (11,047) | (12,569) |  |  |  |
Balance at end of period |  | 76,404 | 60,037 | 76,404 | 60,037 |  |  |  |
Self Insurance [Member] |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Loss Contingency, Receivable |  | 64,200 |  | 64,200 |  |  | 71,300 |  |
Increase (Decrease) in Insurance Liabilities | [2] | (7,012) | $ (4,255) | (7,048) | $ (5,557) |  |  |  |
Warranty and Other [Member] |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |
Loss Contingency, Receivable |  | $ 3,000 |  | $ 3,000 |  |  | $ 4,100 |  |
[1] | a)These expenses are included in selling, general and administrative expenses and are largely offset by contributions from subcontractors participating in the wrap-up policy.
[2] | b)The amount for each period reflects changes in our self-insurance liability that were offset by changes in the receivable for estimated probable insurance and other recoveries to present our self-insurance liability on a gross basis.

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- Definition The increase (decrease) in insurance liability balances during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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- Definition Amount of receivable related to a loss contingency accrual. For example, an insurance recovery receivable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=82913245&loc=d3e12053-110248 + Details
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- Definition Carrying amount (including both current and noncurrent portions) of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.24) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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