CAPITAL STOCK - Additional Information (Detail) - USD ($) shares in Millions, $ in Millions	3 Months Ended	6 Months Ended		116 Months Ended
	Jun. 30, 2016	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016
Equity, Class of Treasury Stock [Line Items]
Share repurchase program	$ 1,000.0	$ 1,000.0		$ 1,000.0
Repurchase of shares of common stock		0.6	2.0
Aggregate cost of repurchase		$ 20.0	$ 80.0
Treasury Stock, Shares, Retired	15.0
Number of shares repurchased under settlement of employee tax withholding obligations		0.2	0.1
Shares repurchased aggregate value under settlement of employee tax withholding obligations		$ 7.5	$ 3.7
2006 Share Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Repurchase of shares of common stock				19.0
Aggregate cost of repurchase				$ 779.3