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Share-Based Compensation Plans - Summary of Activity Related to Stock Options Granted under Company's Incentive Plan (Parenthetical) (Detail) (USD $)	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Value of closing stock price	$ 40.77

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- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

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