PENSION PLANS (Detail) (Pension Plans Defined Benefit [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 10,819	$ 10,155
Interest cost	6,735	6,455
Expected return on plan assets	(8,886)	(8,414)
Prior service cost	300	301
Unrecognized acturial loss	4,272	2,496
Defined Benefit Plan, Net Periodic Benefit Cost	$ 13,240	$ 10,993