RETIREMENT BENEFIT PLANS (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]
Defined benefit plan, contributions by employer	$ 1.8
Defined benefit plan, recognized net gain (loss) due to settlements and curtailments	5.6
Total contributions made by the Company	$ 3.7	$ 3.0	$ 2.9