EXIT COSTS AND RESTRUCTURING RESERVES - Reserve Rollforward (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Restructuring Reserve [Roll Forward]
Beginning balance	$ 26	$ 30
Additions	108	31
Reversals	(4)	(5)
Utilization	(56)	(30)
Ending balance	74	26
Employee Severance | Salaries & Employee Benefits
Restructuring Reserve [Roll Forward]
Beginning balance	2	3
Additions	43	6
Reversals	(1)	(1)
Utilization	(10)	(6)
Ending balance	34	2
Facility Closing | Occupancy & Equipment
Restructuring Reserve [Roll Forward]
Beginning balance	24	27
Additions	17	22
Reversals	(3)	(4)
Utilization	(18)	(21)
Ending balance	20	24
Other Restructuring | Other
Restructuring Reserve [Roll Forward]
Beginning balance	0	0
Additions	48	3
Reversals	0	0
Utilization	(28)	(3)
Ending balance	$ 20	$ 0