Retirement Plans and Postretirement Benefits (Tables)

6 Months Ended

Jun. 30, 2012

Retirement Plans and Postretirement Benefits

Components of the net periodic benefit cost

Three months ended June 30	2012					2011
Net Periodic Benefit Costs	Pension Benefit			Postretirement Benefit		Pension Benefit			Postretirement Benefit
Service cost	$	3		$	6	$	5		$	5
Interest cost	7			11		8			12
Expected return on plan assets	(8		)	—		(8		)	—
Recognized actuarial loss	5			9		3			7
Total	$	7		$	26	$	8		$	24

Six months ended June 30	2012					2011
Net Periodic Benefit Costs	Pension Benefit			Postretirement Benefit		Pension Benefit			Postretirement Benefit
Service cost	$	6		$	13	$	10		$	11
Interest cost	14			22		15			23
Expected return on plan assets	(16		)	—		(16		)	—
Recognized actuarial loss	10			17		6			15
Total	$	14		$	52	$	15		$	49