SHAREHOLDERS' EQUITY - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Stockholders Equity Note [Line Items]
Common stock, share repurchase, dollar amount	$ 610	$ 421
Remaining common stock available for purchase under share repurchase authorizations	19.7
Share Repurchase Program
Stockholders Equity Note [Line Items]
Common stock, share repurchase	9.8	6.5
Common stock, share repurchase, dollar amount	$ 600	$ 415