FEDERAL HOME LOAN BANK ADVANCES AND LONG-TERM DEBT (Details 2) (USD $) In Billions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
FEDERAL HOME LOAN BANK ADVANCES AND LONG-TERM DEBT
Available borrowing capacity from unused FHLB advances	$ 5.54	$ 3.70
Additional available borrowing capacity from the Federal Reserve Bank's discount window	$ 3.03	$ 1.42

Amount of advances or credit lines available from the Federal Home Loan Bank (FHLB).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Balance Type:	credit
Period Type:	instant