INCOME TAXES - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Tax Disclosure [Abstract]
Income tax expense	$ 23.5	$ 12.4	$ 41.6	$ 25.4
Effective income tax rate	14.30%	23.00%	18.80%	25.10%
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	$ 87.1		$ 87.1