PENSION PLANS (Detail) (Pension Plans Defined Benefit [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 9,978	$ 9,342	$ 20,133	$ 18,657
Interest cost	6,676	6,566	13,131	13,108
Expected return on plan assets	(8,356)	(7,995)	(16,770)	(15,962)
Prior service cost	300	301	601	600
Unrecognized acturial loss	3,015	1,246	5,511	2,489
Defined Benefit Plan, Curtailments	0	53	0	53
Defined Benefit Plan, Net Periodic Benefit Cost	$ 11,613	$ 9,513	$ 22,606	$ 18,945