Professional Fees and Other Expenses - Additional Information (Detail) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2015 |
Jun. 30, 2014 |
Jun. 30, 2015 |
Jun. 30, 2014 |
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| Other Income And Expenses [Abstract] | ||||
| Professional fees and other expenses | $ 7.1 | $ 8.0 | $ 11.4 | $ 12.3 |
| X | ||||||||||
- Definition Professional fees and other expenses incurred in response to allegations. No definition available.
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| X | ||||||||||
- References No definition available.
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