PENSION AND OTHER POSTRETIREMENT BENEFITS (Details 2)	12 Months Ended
	Dec. 30, 2012	Dec. 25, 2011	Dec. 26, 2010
Pension Plans, Defined Benefit [Member]
Benefit obligation:
Discount rate	4.22%	5.09%	5.50%
Rate of compensation increase		3.00%	3.00%
Net pension and other postretirement cost:
Discount rate	5.09%	5.50%	5.69%
Rate of compensation increase	3.00%	3.00%	3.00%
Expected return on plan assets	7.50%	7.75%	7.67%
Other Pension Plans, Defined Benefit [Member]
Benefit obligation:
Discount rate	4.22%	5.09%	5.50%
Rate of compensation increase
Net pension and other postretirement cost:
Discount rate	5.09%	5.50%	5.69%
Rate of compensation increase
Expected return on plan assets