Retirement And Other Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2012

Pension Plans Defined Benefit [Member]

Defined Benefit Plan Disclosure [Line Items]

Components Of Net Other Postretirement Benefits

	2012	2011
	(In Thousands)
Service cost - benefits earned during the period	$37,691	$30,490
Interest cost on projected benefit obligation	65,232	59,248
Expected return on assets	(79,356)	(75,319)
Amortization of prior service cost	683	838
Amortization of loss	41,820	23,244
Net pension costs	$66,070	$38,501

Other Postretirement [Member]

Defined Benefit Plan Disclosure [Line Items]

Components Of Net Other Postretirement Benefits

	2012	2011
	(In Thousands)
Service cost - benefits earned during the period	$17,221	$14,835
Interest cost on accumulated postretirement benefit      obligation (APBO)	20,640	18,631
Expected return on assets	(8,626)	(7,369)
Amortization of transition obligation	794	796
Amortization of prior service cost	(4,541)	(3,518)
Amortization of loss	9,113	5,298
Net other postretirement benefit cost	$34,601	$28,673