Income Taxes - Additional Information (Detail) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Jun. 30, 2016 |
Jun. 30, 2015 |
Jun. 30, 2016 |
Jun. 30, 2015 |
|
Income Taxes [Line Items] | ||||
Effective income tax rate | 29.40% | 34.40% | 29.30% | 33.10% |
Reversal of tax reserve assumed in prior acquisition | $ 0.9 | |||
Decrease in total amount of unrecognized tax benefits within the next 12 months | 17.6 | $ 17.6 | ||
Unrecognized tax benefits that would affect net income | 0.1 | $ 0.1 | ||
Other (income) expense, net | ||||
Income Taxes [Line Items] | ||||
Indemnification asset write-off | $ 0.9 |