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AFFORDABLE HOUSING PARTNERSHIPS AND OTHER INVESTMENTS (Details) (USD $)
In Millions, unless otherwise specified
9 Months Ended
Sep. 30, 2013
Dec. 31, 2012
AFFORDABLE HOUSING PARTNERSHIPS AND OTHER INVESTMENTS    
Minimum compliance period to fully utilize the tax credits 15 years  
Investments in affordable housing partnerships $ 171.6 $ 185.6
Other investments in affordable housing partnerships 51.6 45.9
Total unfunded commitments for investments $ 64.4 $ 84.6