SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (SALE OF INDUCEMENTS) (NARRATIVE) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounting Policies [Abstract]
Deferred sales inducements	$ 3.4	$ 3.8	$ 5.1
Deferred sales inducements, amortization expense	11.4	13.8	$ 12.4
Unamortized deferred sales inducements	49.4	57.4
Insurance liabilities for persistency bonus benefits	$ 0.5	$ 0.9