Employee Benefits (Tables)

6 Months Ended

Jun. 30, 2012

Employee Benefits [Abstract]

Components of net periodic benefit cost

	Three Months Ended June 30,
	Pension Benefits						Other Benefits
	2012			2011			2012			2011
	(In millions)
Components of net periodic benefit cost
Service cost	$	—		$	—		$	—		$	1
Interest cost		10			10			2			2
Expected return on assets		(11	)		(11	)		—			—
Recognized actuarial net (gain) loss		4			2			(2	)		(1	)
Net periodic benefit cost	$	3		$	1		$	—		$	2

	Six Months Ended June 30,
	Pension Benefits						Other Benefits
	2012			2011			2012			2011
	(In millions)
Components of net periodic benefit cost
Service cost	$	1		$	1		$	—		$	1
Interest cost		20			21			4			4
Expected return on assets		(22	)		(23	)		—			—
Recognized actuarial net (gain) loss		6			3			(4	)		(2	)
Net periodic benefit cost	$	5		$	2		$	—		$	3