PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS - COMPONENTS OF NET PERIODIC BENEFIT COST (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 03, 2016	Apr. 05, 2015
Pension Benefits
Amounts recognized in net periodic benefit cost
Service cost	$ 5,884	$ 7,423
Interest cost	10,835	11,305
Expected return on plan assets	(14,541)	(17,381)
Amortization of prior service (credit) cost	(262)	(291)
Amortization of net loss	8,807	8,072
Total net periodic benefit cost	10,723	9,128
Other Benefits
Amounts recognized in net periodic benefit cost
Service cost	74	172
Interest cost	2,436	2,588
Expected return on plan assets	0	0
Amortization of prior service (credit) cost	144	153
Amortization of net loss	(12)	0
Total net periodic benefit cost	$ 2,642	$ 2,913