USE OF DERIVATIVES, OFFSETTING DISCLOSURES AND CHANGES IN OTHER COMPREHENSIVE INCOME BY COMPONENT - Schedule of Offsetting of Financial Liabilities and Derivative Liabilities (Parenthetical) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Interest Rate Swap Agreements [Member]
Notional Disclosures [Abstract]
Accrued interest	$ 12.0	$ 10.9
Portfolio-Related Secured Borrowings [Member]
Notional Disclosures [Abstract]
Accrued interest	$ 7.4	$ 9.3