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Stockholders Equity - Additional Information (Detail) shares in Millions	Nov. 30, 2014 shares
Class B
Shareholders Equity And Share Based Payments [Line Items]
Number of shares authorized to be repurchased	3

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- Definition

Shareholders Equity And Share Based Payments [Line Items]

+ References

No definition available.

+ Details

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- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

+ Details

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Period Type:	instant

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- Details

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Namespace Prefix:
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