Retirement Plans and Postretirement Benefits (Tables)

9 Months Ended

Sep. 30, 2012

Retirement Plans and Postretirement Benefits

Components of the net periodic benefit cost (in millions)

Three months ended September 30	2012					2011
Net Periodic Benefit Costs	Pension Benefit			Postretirement Benefit		Pension Benefit			Postretirement Benefit
Service cost	$	3		$	6	$	5		$	6
Interest cost	6			10		7			11
Expected return on plan assets	(7		)	—		(9		)	—
Amortization of prior service cost	1			—		1			—
Recognized actuarial loss	4			10		4			8
Total	$	7		$	26	$	8		$	25

Nine months ended September 30	2012					2011
Net Periodic Benefit Costs	Pension Benefit			Postretirement Benefit		Pension Benefit			Postretirement Benefit
Service cost	$	9		$	19	$	15		$	17
Interest cost	20			32		22			34
Expected return on plan assets	(23		)	—		(25		)	—
Amortization of prior service cost	1			—		1			—
Recognized actuarial loss	14			27		10			23
Total	$	21		$	78	$	23		$	74