Income Taxes - Summary of Open Tax Years and Ongoing Tax Examinations in Major Jurisdictions (Detail)  | 
12 Months Ended | 
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Nov. 30, 2018  | |
| United States - Federal Income Tax [Member] | |
| Income Tax Contingency [Line Items] | |
| Examinations in Process | N/A | 
| United States - Federal Income Tax [Member] | Earliest Tax Year [Member] | |
| Income Tax Contingency [Line Items] | |
| Open Tax Years | 2013 | 
| United States - Federal Income Tax [Member] | Latest Tax Year [Member] | |
| Income Tax Contingency [Line Items] | |
| Open Tax Years | 2017 | 
| United States - Various States [Member] | |
| Income Tax Contingency [Line Items] | |
| Examinations in Process | N/A | 
| United States - Various States [Member] | Earliest Tax Year [Member] | |
| Income Tax Contingency [Line Items] | |
| Open Tax Years | 2012 | 
| United States - Various States [Member] | Latest Tax Year [Member] | |
| Income Tax Contingency [Line Items] | |
| Open Tax Years | 2017 | 
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- Definition Examination in process. No definition available. 
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
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- Definition Tax year that remains open to examination under enacted tax laws, in CCYY format. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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