PREFERRED STOCK (Detail) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Sep. 15, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Class of Stock [Line Items]
Preferred stock, shares authorized		1,000,000	1,000,000
Preferred stock, shares issued		770,000
Net proceeds from stock issuance		$ 746,900	$ 0	$ 0
Depositary shares liquidation preference (in dollars per share)	$ 100.00
Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares authorized		1,000,000	1,000,000
Preferred stock, shares issued		770,000
Preferred stock, shares outstanding		770,000
Depositary shares issued	7,700,000
Preferred stock, dividend rate	5.25%
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01
Share price (in dollars per share)	$ 100.00
Gross proceeds from stock issuance	$ 770,000
Net proceeds from stock issuance	$ 746,900
Preferred stock liquidation preference (in dollars per share)	$ 1,000
Minimum | Series A Preferred Stock
Class of Stock [Line Items]
Shares issued upon conversion (in shares)	5.8716
Maximum | Series A Preferred Stock
Class of Stock [Line Items]
Shares issued upon conversion (in shares)	7.3394