Retirement Plans

6 Months Ended

Jun. 30, 2012

Retirement Plans [Abstract]

Retirement Plans

10. Retirement Plans

Components of net periodic pension cost consisted of the following:

	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
	(In millions)
Service cost	$	18		$	14		$	36		$	28
Interest cost		22			22			44			44
Expected return on plan assets		(29	)		(27	)		(58	)		(54	)
Amortization of net loss		21			11			42			22
Pension expense	$	32		$	20		$	64		$	40

For the full year of 2012, the Corporation expects to contribute approximately $150 million to its funded pension plans. Through June 30, 2012, the Corporation contributed $83 million of this amount.