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Share-Based Compensation Plans - Summary of Activity Related to Stock Options Granted under Company's Incentive Plan (Parenthetical) (Detail) (USD $)	Mar. 31, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Value of closing stock price	$ 46.70

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- Details

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- Definition

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

+ 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 (e)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

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