Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2012

Employee Benefit Plans [Abstract]

Pension Benefit Costs

	Three Months Ended March 31,
	2012	2011
	(In thousands)
Service cost	$ 7,596	$ 4,319
Interest cost	3,980	4,131
Expected return on plan assets	(5,538)	(5,468)
Amortization of prior service cost (credit)	(36)	47
Amortization of other actuarial losses	3,571	2,140
Net benefit cost	$ 9,573	$ 5,169

Other Postretirement Benefit Costs

	Three Months Ended March 31,
	2012	2011
	(In thousands)
Service cost	$ 549	$ 405
Interest cost	491	498
Amortization of prior service credits	(2,995)	(591)
Amortization of other actuarial gains	(90)	(598)
Net benefitcost (credit)	$ (2,045)	$ (287)