EMPLOYEE STOCK BENEFIT PLANS (Outstanding and Exercisable Options) (Details) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number Outstanding	41,965
Options Outstanding, Weighted Average Remaining Contractual Life	3 years 9 months 15 days
Options Outstanding, Weighted Average Exercise Price Per Share	$ 23.21
Options Outstanding, Aggregate Intrinsic Value	$ 394
Options Exercisable, Number Exercisable	38,784
Options Exercisable, Weighted Average Remaining Contractual Life	3 years 7 months 0 days
Options Exercisable, Weighted Average Exercise Price Per Share	$ 23.67
Options Exercisable, Aggregate Intrinsic Value	347
Closing Company stock price used to calculate the aggregate intrinsic value	$ 32.59
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	10,344
Options Outstanding, Weighted Average Remaining Contractual Life	6 years 1 month 28 days
Options Outstanding, Weighted Average Exercise Price Per Share	$ 17.51
Options Outstanding, Aggregate Intrinsic Value	156
Options Exercisable, Number Exercisable	7,184
Options Exercisable, Weighted Average Remaining Contractual Life	6 years 1 month 28 days
Options Exercisable, Weighted Average Exercise Price Per Share	$ 17.49
Options Exercisable, Aggregate Intrinsic Value	109
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	31,606
Options Outstanding, Weighted Average Remaining Contractual Life	3 years 0 months 0 days
Options Outstanding, Weighted Average Exercise Price Per Share	$ 25.06
Options Outstanding, Aggregate Intrinsic Value	238
Options Exercisable, Number Exercisable	31,585
Options Exercisable, Weighted Average Remaining Contractual Life	3 years 0 months 0 days
Options Exercisable, Weighted Average Exercise Price Per Share	$ 25.07
Options Exercisable, Aggregate Intrinsic Value	$ 238
Exercise Price Of Thirty Dollars To Forty Dollars [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number Outstanding	15
Options Outstanding, Weighted Average Remaining Contractual Life	4 years 6 months 0 days
Options Outstanding, Weighted Average Exercise Price Per Share	$ 31.62
Options Exercisable, Number Exercisable	15
Options Exercisable, Weighted Average Remaining Contractual Life	4 years 6 months 0 days
Options Exercisable, Weighted Average Exercise Price Per Share	$ 31.62