DERIVATIVES - Schedule of Fair Value Hedges (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Derivative	$ 3,000,000	$ 9,000,000	$ 7,000,000	$ 17,000,000
Hedge of interest rate risk | Other Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative	(3,000,000)	0	6,000,000	0
Hedged Item	3,000,000	0	(6,000,000)	0
Hedge Ineffectiveness	$ 0	$ 0	$ 0	$ 0