Share-Based Compensation - Summary of Share-Based Compensation Expense (Detail) - USD ($) $ in Millions |
3 Months Ended | |
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Mar. 31, 2016 |
Mar. 31, 2015 |
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| Employee Service Share-based Compensation, Aggregate Disclosures [Abstract] | ||
| Share-based compensation expense | $ 2.0 | $ 3.9 |
| Income tax provision related to share-based compensation expense | (0.7) | (1.3) |
| After tax share-based compensation expense | $ 1.3 | $ 2.6 |
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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. No definition available.
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- References No definition available.
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- Definition The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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