SHAREHOLDERS' EQUITY - Additional Information (Detail) - USD ($) shares in Millions, $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Feb. 28, 2018	Aug. 31, 2017
Stockholders Equity Note [Line Items]
Common stock, share repurchase, dollar amount	$ 923	$ 1,053
Remaining common stock available for purchase under share repurchase authorizations	77.6
Share Repurchase Program
Stockholders Equity Note [Line Items]
Stock acquired in open market, shares	20.4	27.8
Common stock, share repurchase, dollar amount	$ 923	$ 1,000
Share Repurchase Authorization 2017
Stockholders Equity Note [Line Items]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased, Before Stock Split				40.0
Stock Repurchase Program, Number of Shares Authorized to be Repurchased			80.0