PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jul. 01, 2012	Jun. 30, 2013	Jul. 01, 2012
Defined Benefit Plan Disclosure [Line Items]
Pension Contributions			$ (13,249,000)	$ (12,749,000)
Defined Benefit Plan, Estimated Future Employer Contributions in Current Fiscal Year	25,000,000		25,000,000
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	7,730,000	7,378,000	15,698,000	15,146,000
Interest cost	10,928,000	12,711,000	22,002,000	25,315,000
Expected return on plan assets	(18,201,000)	(18,182,000)	(36,585,000)	(36,412,000)
Amortization of prior service cost	105,000	180,000	211,000	363,000
Recognized net actuarial loss (gain)	10,060,000	10,001,000	20,218,000	19,778,000
Administrative expenses	155,000	162,000	267,000	300,000
Net periodic benefit cost (income)	10,777,000	12,250,000	21,811,000	24,490,000
Pension Contributions	800,000	700,000	1,200,000	1,800,000
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	258,000	305,000	547,000	586,000
Interest cost	2,592,000	3,202,000	5,377,000	6,626,000
Expected return on plan assets	0	0	0	0
Amortization of prior service cost	99,000	154,000	254,000	309,000
Recognized net actuarial loss (gain)	23,000	(33,000)	18,000	(50,000)
Administrative expenses	36,000	64,000	50,000	95,000
Net periodic benefit cost (income)	3,008,000	3,692,000	6,246,000	7,566,000
Pension Contributions	$ 6,300,000	$ 5,800,000	$ 12,000,000	$ 11,000,000