SIGNIFICANT ACCOUNTING POLICIES (Details 4) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 25, 2012
Cash Flow Information
Interest paid (net of amount capitalized)	$ 21,885,000	$ 68,061,000
Income taxes paid (net of refunds)	(8,214,000)	8,935,000
Other non-cash financing activities
(Gain) loss on extinguishment of debt	12,770,000	(4,433,000)
Contributions to the qualified defined benefit pension plan	7,500,000	40,000,000
Purchases of property, plant and equipment on credit	$ 6,600,000	$ 600,000