EMPLOYEE STOCK BENEFIT PLANS (Outstanding and Exercisable Options) (Details) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	Dec. 31, 2011
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number Outstanding	70,224
Options Outstanding, Weighted Average Remaining Contractual Life	$ 3.80
Options Outstanding, Weighted Average Exercise Price Per Share	$ 27.04
Options Outstanding, Aggregate Intrinsic Value	$ 704
Options Exercisable, Number Exercisable	60,959
Options Exercisable, Weighted Average Remaining Contractual Life	$ 3.33
Options Exercisable, Weighted Average Exercise Price Per Share	$ 28.32
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value	550
Closing Company stock price used to calculate the aggregate intrinsic value	$ 35.24
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	13,062
Options Outstanding, Weighted Average Remaining Contractual Life	$ 7.16
Options Outstanding, Weighted Average Exercise Price Per Share	$ 17.48
Options Outstanding, Aggregate Intrinsic Value	232
Options Exercisable, Number Exercisable	5,997
Options Exercisable, Weighted Average Remaining Contractual Life	$ 7.14
Options Exercisable, Weighted Average Exercise Price Per Share	$ 17.37
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value	107
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	47,186
Options Outstanding, Weighted Average Remaining Contractual Life	$ 3.64
Options Outstanding, Weighted Average Exercise Price Per Share	$ 25.25
Options Outstanding, Aggregate Intrinsic Value	472
Options Exercisable, Number Exercisable	44,986
Options Exercisable, Weighted Average Remaining Contractual Life	$ 3.48
Options Exercisable, Weighted Average Exercise Price Per Share	$ 25.40
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value	$ 443
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	28
Options Outstanding, Weighted Average Remaining Contractual Life	$ 3.82
Options Outstanding, Weighted Average Exercise Price Per Share	$ 30.97
Options Exercisable, Number Exercisable	28
Options Exercisable, Weighted Average Remaining Contractual Life	$ 3.82
Options Exercisable, Weighted Average Exercise Price Per Share	$ 30.97
Exercise Price Of Forty Dollars And Up [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number Outstanding	9,948
Options Outstanding, Weighted Average Remaining Contractual Life	$ 0.17
Options Outstanding, Weighted Average Exercise Price Per Share	$ 48.10
Options Exercisable, Number Exercisable	9,948
Options Exercisable, Weighted Average Remaining Contractual Life	$ 0.17
Options Exercisable, Weighted Average Exercise Price Per Share	$ 48.10