SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Deferred Revenue) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Jan. 01, 2015
Deferred Revenue Arrangement [Line Items]
Deferred revenue, noncurrent	$ 415.2	$ 418.0
Deferred revenue	$ 203.4	188.2
National Cine Media
Deferred Revenue Arrangement [Line Items]
Amortization period (in years)	30 years
Deferred revenue, noncurrent	$ 426.7	428.5
Deferred Revenue
Deferred Revenue Arrangement [Line Items]
Deferred revenue	$ 188.5	$ 168.7