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Concentration of Risk - Summary of Product Lines Accounted for More than Ten Percent of Net Sales (Detail)
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12 Months Ended | ||
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Nov. 30, 2012
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Nov. 30, 2011
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Nov. 30, 2010
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Skin Care [Member]
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| Concentration Risk [Line Items] | |||
| Product lines accounted more than ten percent of net sales | 30.90% | 31.20% | 30.00% |
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Dietary Supplement [Member]
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| Concentration Risk [Line Items] | |||
| Product lines accounted more than ten percent of net sales | 18.30% | 26.00% | 33.00% |
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Oral Care [Member]
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| Concentration Risk [Line Items] | |||
| Product lines accounted more than ten percent of net sales | 20.30% | 21.10% | 20.00% |
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Nail Care [Member]
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| Concentration Risk [Line Items] | |||
| Product lines accounted more than ten percent of net sales | 26.60% | 14.50% | 10.00% |