EMPLOYEE STOCK BENEFIT PLANS (Outstanding and Exercisable Options) (Details) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($) $ / shares shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number Outstanding | shares	10,327
Options Outstanding, Weighted Average Remaining Contractual Life	2 years 1 month 20 days
Options Outstanding, Weighted Average Exercise Price Per Share	$ 21.61
Options Outstanding, Aggregate Intrinsic Value | $	$ 487
Options Exercisable, Number Exercisable | shares	10,327
Options Exercisable, Weighted Average Remaining Contractual Life	2 years 1 month 20 days
Options Exercisable, Weighted Average Exercise Price Per Share	$ 21.61
Options Exercisable, Aggregate Intrinsic Value | $	$ 487
Closing Company stock price used to calculate the aggregate intrinsic value	$ 68.79
Exercise Price Of One Dollar To Twenty Dollars [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number Outstanding | shares	4,096
Options Outstanding, Weighted Average Remaining Contractual Life	3 years 1 month 20 days
Options Outstanding, Weighted Average Exercise Price Per Share	$ 17.53
Options Outstanding, Aggregate Intrinsic Value | $	$ 210
Options Exercisable, Number Exercisable | shares	4,096
Options Exercisable, Weighted Average Remaining Contractual Life	3 years 1 month 20 days
Options Exercisable, Weighted Average Exercise Price Per Share	$ 17.53
Options Exercisable, Aggregate Intrinsic Value | $	$ 210
Exercise Price Of Twenty Dollars To Thirty Dollars [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number Outstanding | shares	6,231
Options Outstanding, Weighted Average Remaining Contractual Life	1 year 5 months 27 days
Options Outstanding, Weighted Average Exercise Price Per Share	$ 24.30
Options Outstanding, Aggregate Intrinsic Value | $	$ 277
Options Exercisable, Number Exercisable | shares	6,231
Options Exercisable, Weighted Average Remaining Contractual Life	1 year 5 months 27 days
Options Exercisable, Weighted Average Exercise Price Per Share	$ 24.30
Options Exercisable, Aggregate Intrinsic Value | $	$ 277