RECLASSIFICATIONS OUT OF ACCUMULATED OTHER COMPREHENSIVE INCOME - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance			$ (648)	$ (312)
Other comprehensive loss before reclassifications			264	(305)
Other-than-temporary impairment not recognized in earnings on securities, net of income taxes of $0, $0, ($12) and ($21), respectively	(1)	0	(22)	(35)
Amounts reclassified from other comprehensive income			(29)	13
Net other comprehensive (loss) income			213	(327)
Ending balance	(435)	(639)	(435)	(639)
Net Unrealized Gains (Losses) on Derivatives
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance			(298)	(240)
Other comprehensive loss before reclassifications			137	(121)
Other-than-temporary impairment not recognized in earnings on securities, net of income taxes of $0, $0, ($12) and ($21), respectively			0	0
Amounts reclassified from other comprehensive income			16	79
Net other comprehensive (loss) income			153	(42)
Ending balance	(145)	(282)	(145)	(282)
Net Unrealized Gains (Losses) on Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance			(91)	306
Other comprehensive loss before reclassifications			127	(184)
Other-than-temporary impairment not recognized in earnings on securities, net of income taxes of $0, $0, ($12) and ($21), respectively			(22)	(35)
Amounts reclassified from other comprehensive income			(13)	(71)
Net other comprehensive (loss) income			92	(290)
Ending balance	1	16	1	16
Defined Benefit Pension Plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance			(259)	(378)
Other comprehensive loss before reclassifications			0	0
Other-than-temporary impairment not recognized in earnings on securities, net of income taxes of $0, $0, ($12) and ($21), respectively			0	0
Amounts reclassified from other comprehensive income			(32)	5
Net other comprehensive (loss) income			(32)	5
Ending balance	$ (291)	$ (373)	$ (291)	$ (373)