STOCKHOLDERS' EQUITY - Additional Information (Detail) - USD ($) shares in Thousands			6 Months Ended
	Feb. 22, 2017	Feb. 16, 2017	Jun. 30, 2017	Jun. 30, 2016	Aug. 02, 2017	Feb. 14, 2017	Dec. 31, 2016
Equity, Class of Treasury Stock [Line Items]
Share repurchase authorization						$ 2,250,000,000	$ 2,000,000,000
Remaining authorized amount							1,040,000,000
Common shares acquired in connection with employee stock plans, shares			370	440
Common shares acquired in connection with employee stock plans, amount			$ 78,000,000	$ 73,000,000
Treasury stock reissued (shares)			1,340
Treasury stock reissued			$ 94,000,000
Accumulated other comprehensive loss			(5,000,000)				(66,000,000)
Net unrealized gains on our investment securities
Equity, Class of Treasury Stock [Line Items]
Accumulated other comprehensive loss			87,000,000				(17,000,000)
Additional liability that would exist on closed block of long-term care policies assuming unrealized gains on investments backing such products were realized and reinvested at current yields
Equity, Class of Treasury Stock [Line Items]
Accumulated other comprehensive loss			$ 92,000,000				$ 49,000,000
Accelerated Share Repurchase Agreement
Equity, Class of Treasury Stock [Line Items]
Share repurchase payment	$ 1,500,000,000
Value of shares repurchased	$ 1,200,000,000	$ 1,500,000,000
Shares repurchased in open market	5,830
Decrease in capital in excess of par value	$ 300,000,000
Subsequent Event | September 2014 Share Repurchase Authorization
Equity, Class of Treasury Stock [Line Items]
Remaining authorized amount					$ 1,050,000,000