INCENTIVE COMPENSATION (Narrative) (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 27, 2015	Dec. 28, 2014	Dec. 29, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Accrued in costs related to the STIP	$ 30.1
Reserved common stock for future issuance under the LTIP (in shares)	5.2
Total fair value of the shares vested	$ 22.4	$ 3.2	$ 0.7
Total unrecognized compensation cost related to all nonvested awards	$ 8.8
Weighted average period unrecognized compensation cost is expected to be recognized	2 years 2 months 19 days