EMPLOYEE STOCK BENEFIT PLANS (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 48	$ 45	$ 147	$ 140
Income tax benefit	16	13	49	47
Unrecognized compensation cost	310		310
Weighted-average period over which unrecognized compensation cost is expected to be recognized			2 years 6 months 0 days
Employee Stock Option [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense				1
Restricted Stock [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	18	19	56	56
Number of shares granted			1.8
Weighted average grant date fair value of grants during the period			$ 52.14
Share-based compensation arrangement by share-based payment award, award vesting period			4 years 0 months 0 days
Market share units [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	9	5	25	21
Number of shares granted			0.9
Weighted average grant date fair value of grants during the period			$ 55.44
Share-based compensation arrangement by share-based payment award, award vesting period			4 years 0 months 0 days
Performance share units [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 21	$ 21	$ 66	$ 62
Number of shares granted			2.3
Weighted average grant date fair value of grants during the period			$ 55.17
Share-based compensation arrangement by share-based payment award, award vesting period			3 years 0 months 0 days