RETIREMENT AND POSTRETIREMENT BENEFIT PLANS (Tables)

9 Months Ended

Sep. 30, 2011

RETIREMENT AND POSTRETIREMENT BENEFIT PLANS

Components of total pension cost

	Three Months Ended September 30,						Nine Months Ended September 30,
	2011			2010			2011			2010
Service cost	$	4,544		$	3,847		$	13,205		$	11,530
Interest cost	11,127			10,810			33,067			32,331
Expected return on plan assets	(14,323		)	(12,620		)	(43,061		)	(37,758		)
Amortization of prior service cost	(16		)	(12		)	(47		)	(34		)
Amortization of net loss	5,444			5,201			16,392			15,597
Defined benefit plans	6,776			7,226			19,556			21,666
Multi-employer plans	241			235			717			764
Defined contribution plans	2,137			1,865			6,327			5,554
Total pension cost	$	9,154		$	9,326		$	26,600		$	27,984