Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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SIGNIFICANT ACCOUNTING POLICIES - AOCI (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 28, 2014	Sep. 28, 2014	Jun. 29, 2014	Mar. 30, 2014	Dec. 29, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 28, 2014	Dec. 29, 2013	Dec. 30, 2012
Changes in accumulated other comprehensive loss
Balance at the beginning of the period				$ (304,901)				$ (481,316)	$ (304,901)	$ (481,316)
Other comprehensive income (loss) before reclassifications									(819)	(364)
Amounts reclassified from AOCL									(110,883)	176,779
Other comprehensive income (loss)									(111,702)	176,415	(133,662)
Balance at the end of the period	(416,603)				(304,901)				(416,603)	(304,901)	(481,316)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Compensation									411,881us-gaap_LaborAndRelatedExpense	422,981us-gaap_LaborAndRelatedExpense	434,059us-gaap_LaborAndRelatedExpense
Provision for income taxes									231,230us-gaap_IncomeTaxExpenseBenefit	11,659us-gaap_IncomeTaxExpenseBenefit	(23,725)us-gaap_IncomeTaxExpenseBenefit
Net of tax	(302,642)us-gaap_NetIncomeLoss	2,760us-gaap_NetIncomeLoss	(89,949)us-gaap_NetIncomeLoss	15,842us-gaap_NetIncomeLoss	(12,527)us-gaap_NetIncomeLoss	(7,265)us-gaap_NetIncomeLoss	(11,752)us-gaap_NetIncomeLoss	12,741us-gaap_NetIncomeLoss	(373,989)us-gaap_NetIncomeLoss	(18,803)us-gaap_NetIncomeLoss	144us-gaap_NetIncomeLoss
Minimum Pension and Post-Retirement Liability
Changes in accumulated other comprehensive loss
Balance at the beginning of the period				(296,669)				(473,448)	(296,669)	(473,448)
Amounts reclassified from AOCL									(110,883)	176,779
Other comprehensive income (loss)									(110,883)	176,779
Balance at the end of the period	(407,552)				(296,669)				(407,552)	(296,669)
Minimum Pension and Post-Retirement Liability \| Amount Reclassified from AOCI
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Compensation									(184,805)	294,632
Provision for income taxes									73,922	(117,853)
Net of tax									(110,883)	176,779
Other Comprehensive Loss Related to Equity Investments
Changes in accumulated other comprehensive loss
Balance at the beginning of the period				(8,232)				(7,868)	(8,232)	(7,868)
Other comprehensive income (loss) before reclassifications									(819)	(364)
Other comprehensive income (loss)									(819)	(364)
Balance at the end of the period	$ (9,051)				$ (8,232)				$ (9,051)	$ (8,232)