DERIVATIVES - Schedule of Fair Value Hedges (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Derivative	$ 16,000,000	$ 4,000,000	$ 23,000,000	$ 21,000,000
Hedge of interest rate risk | Other Income
Derivative Instruments, Gain (Loss) [Line Items]
Derivative	16,000,000	0	22,000,000	0
Hedged Item	(16,000,000)	0	(22,000,000)	0
Hedge Ineffectiveness	$ 0	$ 0	$ 0	$ 0