SHAREHOLDERS' EQUITY - Additional Information (Detail) shares in Millions	12 Months Ended
	Dec. 31, 2018 Vote shares	Dec. 31, 2017 shares	Dec. 31, 2016 shares
Stockholders Equity Note [Line Items]
Remaining common stock available for purchase under share repurchase authorizations | shares	69.0
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.
Share Held For Less Than A Continuous Forty Eight Month Period
Stockholders Equity Note [Line Items]
Common stock, votes per share | Vote	1
Share Held For Continuous Forty Eight Month Period
Stockholders Equity Note [Line Items]
Common stock, votes per share | Vote	10
Share Repurchase Program
Stockholders Equity Note [Line Items]
Stock acquired in open market, shares | shares	28.9	35.5	43.2