CAPITAL STOCK - Additional Information (Detail) - USD ($) shares in Millions, $ in Millions	3 Months Ended		29 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019
Equity, Class of Treasury Stock [Line Items]
Aggregate cost of repurchase	$ 19.9	$ 55.3
Number of shares repurchased under settlement of employee tax withholding obligations	0.1
Shares repurchased aggregate value under settlement of employee tax withholding obligations	$ 9.4	$ 5.3
2006 Share Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Share repurchase program	$ 1,000.0		$ 1,000.0
Repurchase of shares of common stock	0.2	1.0	22.4
Aggregate cost of repurchase	$ 10.5	$ 50.0	$ 919.9