DEBT - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Interest paid	$ 88,800,000	$ 68,000,000	$ 57,800,000
$1.20 billion senior credit facility weighted average rate 2.14%, due in 2019
Debt Instrument [Line Items]
Revolving credit facility, amount committed to outstanding letters of credit	138,000,000	160,400,000
Revolving credit facility, unused portion	654,900,000	$ 685,800,000
Maximum borrowing capacity of line of credit facility	1,200,000,000
$175 million private placement notes 3.89%, due in 2017
Debt Instrument [Line Items]
Long-term debt, face amount	$ 175,000,000