SHAREHOLDERS' EQUITY - Additional Information (Detail) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stockholders Equity Note [Line Items]
Common stock, voting rights	are generally entitled to one vote per share until they have been held by the same beneficial owner for a continuous period of 48 months, at which time they become entitled to 10 votes per share.
Voting rights, votes per share	1
Remaining common stock available for purchase under share repurchase authorizations	29.6
The expected U.S. tax rate	35.00%	35.00%
Share repurchase program
Stockholders Equity Note [Line Items]
Common stock, share repurchase	19.7	13.2	1.9
Share Held For Continuous Forty Eight Month Period
Stockholders Equity Note [Line Items]
Voting rights, votes per share	10