Retirement and Postretirement Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2015

Retirement and Postretirement Benefit Plans

Components of the net periodic benefit cost (in millions)

Three months ended June 30	2015				2014
Net Periodic Benefit Costs	Pension Benefit		Post- retirement Benefit		Pension Benefit		Post- retirement Benefit
Service cost	$	2	$	7	$	3	$	6
Interest cost	5		10		6		12
Expected return on plan assets	(7)		—		(9)		—
Recognized actuarial loss	2		7		2		6
Total	$	2	$	24	$	2	$	24

Six months ended June 30	2015				2014
Net Periodic Benefit Costs	Pension Benefit		Post- retirement Benefit		Pension Benefit		Post- retirement Benefit
Service cost	$	4	$	14	$	6	$	12
Interest cost	10		20		12		24
Expected return on plan assets	(14)		—		(17)		—
Recognized actuarial loss	4		14		3		12
Total	$	4	$	48	$	4	$	48