Retirement and Postretirement Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2013

Retirement and Postretirement Benefit Plans

Components of the net periodic benefit cost (in millions)

Three months ended September 30	2013					2012
Net Periodic Benefit Costs	Pension Benefit			Postretirement Benefit		Pension Benefit			Postretirement Benefit
Service cost	$	3		$	8	$	3		$	6
Interest cost		6			11		6			10
Expected return on plan assets		(7	)		—		(7	)		—
Amortization of prior service cost		—			—		1			—
Recognized actuarial loss		10			9		4			10
Total	$	12		$	28	$	7		$	26

Nine months ended September 30	2013					2012
Net Periodic Benefit Costs	Pension Benefit			Postretirement Benefit		Pension Benefit			Postretirement Benefit
Service cost	$	10		$	22	$	9		$	19
Interest cost		19			32		20			32
Expected return on plan assets		(23	)		—		(23	)		—
Amortization of prior service cost		—			—		1			—
Recognized actuarial loss		18			29		14			27
Total	$	24		$	83	$	21		$	78