Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2012

Components of Net Periodic Benefit Cost

The components of net periodic benefit cost are as follows:

	Pension Benefits
	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2012			2011			2012			2011
(In millions)
Service cost	$	5		$	6		$	17		$	18
Interest cost		39			41			114			123
Expected return on plan assets		(47	)		(47	)		(140	)		(141	)
Amortization of unrecognized net loss		11			8			34			22
Net periodic benefit cost	$	8		$	8		$	25		$	22

	Other Postretirement Benefits
	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2012			2011			2012			2011
(In millions)
Service cost	$	1		$	1		$	1		$	1
Interest cost		1			1			4			5
Expected return on plan assets		(1	)					(3	)		(2	)
Amortization of unrecognized net loss					1						1
Amortization of unrecognized prior service benefit		(6	)		(7	)		(19	)		(20	)
Regulatory asset decrease					1						4
Net periodic benefit cost	$	(5	)	$	(3	)	$	(17	)	$	(11	)