INVESTMENTS (SCHEDULE OF INVESTMENTS IN OUR PORTFOLIO RATED BELOW-INVESTMENT GRADE WHICH HAVE BEEN CONTINUOUSLY IN AN UNREALIZED LOSS POSITION 1) (Details) - Fixed Maturities [Member] $ in Millions	Dec. 31, 2016 USD ($) issuer
Schedule of Available-for-sale Securities [Line Items]
Less than 6 months prior to sale, Number of issuers | issuer	19
Greater than or equal to 6 months and less than 12 months prior to sale, Number of issuers | issuer	7
Number of issuers, Total | issuer	26
Less than 6 months prior to sale, Amortized cost	$ 119.3
Greater than or equal to 6 months and less than 12 months prior to sale, Amortized cost	76.4
Amortized cost, Total	195.7
Less than 6 months prior to sale, Fair value	79.2
Greater than or equal to 6 months and less than 12 months prior to sale, Fair value	45.6
Fair value, Total	$ 124.8