For any sales of securities categorized as held-to-maturity, this item represents the net carrying amount of the sold security.

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The cumulative amount of credit losses recognized in earnings related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (a component of shareholders' equity).

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This item represents reductions in the cumulative amount of credit losses recognized in earnings for an other than temporary impairment (OTTI) of a debt security held due to increases in cash flows expected to be collected and recognized over the remaining life of the security.

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Amount before tax of other than temporary impairment (OTTI) loss on investments in available-for-sale and held-to-maturity debt securities, recognized in other comprehensive loss.

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The cash inflow from securitizing loans held with the intention to resell in the near future.

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SECURITIES - Narrative (Details) - USD ($)	12 Months Ended
SECURITIES - Narrative (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]
Securities impairment	$ 7,000,000	$ 10,000,000	$ 8,000,000
Impaired debt securities sold	0	0	0
Pretax non-credit related losses were deferred in OCI	36,000,000	35,000,000	41,000,000
Mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Gain recognized on sale of held-to-maturity security	2,000,000
Value of held-to-maturity security sold	73,000,000
Available-for-sale Securities
Schedule of Available-for-sale Securities [Line Items]
Cumulative credit losses recognized in earnings	66,000,000	62,000,000	56,000,000	$ 55,000,000
Reductions due to increases in cash flow expectations on impaired securities	3,000,000	4,000,000	7,000,000
Held-to-maturity Securities
Schedule of Available-for-sale Securities [Line Items]
Cumulative credit losses recognized in earnings	0	0	0
Mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Proceeds from Securitizations of Loans Held-for-sale	$ 3,000,000	$ 18,000,000	$ 106,000,000