RETIREMENT AND POSTRETIREMENT BENEFIT PLANS (Tables)

9 Months Ended

Sep. 30, 2012

RETIREMENT AND POSTRETIREMENT BENEFIT PLANS

Components of total pension cost

	Three Months Ended September 30,						Nine Months Ended September 30,
	2012			2011			2012			2011
Service cost	$	5,426		$	4,544		$	16,275		$	13,205
Interest cost	10,368			11,127			31,097			33,067
Expected return on plan assets	(14,688		)	(14,323		)	(44,059		)	(43,061		)
Amortization of prior service cost	(23		)	(16		)	(68		)	(47		)
Amortization of net loss	7,773			5,444			23,316			16,392
Defined benefit plans	8,856			6,776			26,561			19,556
Multi-employer plans	223			241			690			717
Defined contribution plans	2,435			2,137			7,032			6,327
Total pension cost	$	11,514		$	9,154		$	34,283		$	26,600