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Fair Value Disclosures (Tables) | 12 Months Ended
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Nov. 30, 2018
Fair Value Disclosures [Abstract] |
Assets measured at fair value on a nonrecurring basis | The following table presents the fair value hierarchy and our assets measured at fair value on a nonrecurring basis (in thousands):
|  |  |  | November 30, 2018 |  | November 30, 2017
Description |  | Fair Value Hierarchy |  | Pre-Impairment Value |  | Inventory Impairment Charges |  | Fair Value (a) |  | Pre-Impairment Value |  | Inventory Impairment Charges |  | Fair Value (a)
Inventories (a) |  | Level 3 |  | $ | 70,156 |  |  | $ | (26,104 | ) |  | $ | 44,052 |  |  | $ | 58,962 |  |  | $ | (20,605 | ) |  | $ | 38,357 |
(a) | Amounts represent the aggregate fair value for real estate assets impacted by inventory impairment charges during the applicable period, as of the date that the fair value measurements were made. The carrying value for these real estate assets may have subsequently increased or decreased from the fair value reflected due to activity that has occurred since the measurement date.
Carrying values and estimated fair values of financial instruments | The following table presents the fair value hierarchy, carrying values and estimated fair values of our financial instruments, except those for which the carrying values approximate fair values (in thousands):
|  |  |  | November 30,
|  |  |  | 2018 |  | 2017
Description |  | Fair Value Hierarchy |  | Carrying Value (a) |  | Estimated Fair Value |  | Carrying Value (a) |  | Estimated Fair Value
Financial Liabilities: |  |  |  |  |  |  |  |  |  |
Senior notes |  | Level 2 |  | $ | 1,790,437 |  |  | $ | 1,853,438 |  |  | $ | 2,086,070 |  |  | $ | 2,292,250 |
Convertible senior notes |  | Level 2 |  | 229,788 |  |  | 229,425 |  |  | 228,572 |  |  | 278,300 |
(a) | The carrying values for the senior notes and convertible senior notes, as presented, include unamortized debt issuance costs. Debt issuance costs are not factored into the estimated fair values of these notes.

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- Definition Tabular disclosure of assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). Disclosures may include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13476-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13467-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=75026489&loc=d3e13220-108610 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14172-108612 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611 + Details
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