PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Oct. 02, 2011	Sep. 30, 2012	Oct. 02, 2011
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 7,576,000	$ 7,507,000	$ 22,722,000	$ 22,544,000
Interest cost	12,665,000	13,147,000	37,980,000	39,752,000
Expected return on plan assets	(18,222,000)	(19,640,000)	(54,634,000)	(58,675,000)
Amortization of prior service cost	182,000	231,000	545,000	692,000
Recognized net actuarial loss (gain)	9,895,000	6,693,000	29,673,000	20,779,000
Administrative expenses	137,000	134,000	437,000	550,000
Net periodic benefit cost (income)	12,233,000	8,072,000	36,723,000	25,642,000
Settlement losses	13,117,000	0	13,117,000	0
Curtailment loss (credit)	0	(7,000)	0	1,826,000
Total amount reflected in earnings	25,350,000	8,065,000	49,840,000	27,468,000
Contributions to pension plans	2,900,000	1,300,000	4,600,000	3,900,000
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	293,000	333,000	879,000	1,000,000
Interest cost	3,316,000	3,744,000	9,942,000	11,232,000
Expected return on plan assets	0	0	0	0
Amortization of prior service cost	156,000	(63,000)	465,000	(190,000)
Recognized net actuarial loss (gain)	(25,000)	(18,000)	(75,000)	(54,000)
Administrative expenses	22,000	110,000	117,000	211,000
Net periodic benefit cost (income)	3,762,000	4,106,000	11,328,000	12,199,000
Settlement losses	0	0	0	0
Curtailment loss (credit)	0	0	0	(174,000)
Total amount reflected in earnings	3,762,000	4,106,000	11,328,000	12,025,000
Contributions to pension plans	5,700,000	5,400,000	16,700,000	15,700,000
Non-Qualified Contributions Reimbursement		$ 200,000		$ 800,000