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Share-Based Compensation Plans - Summary of Activity Related to Stock Options Granted under Company's Incentive Plan (Parenthetical) (Detail) (USD $) | Dec. 31, 2013
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Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Value of closing stock price | $ (43.60)

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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 + Details
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