Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2015

Compensation and Retirement Disclosure [Abstract]

Components of Net Periodic Benefit Cost

The components of net periodic benefit cost are as follows:

					Other
	Pension Benefits				Postretirement Benefits
Three Months Ended March 31	2015		2014		2015		2014
(In millions)
Service cost	$	4	$	5
Interest cost		32		37	$	1	$	1
Expected return on plan assets		(48)		(53)		(1)		(1)
Amortization of unrecognized net loss		11		7
Amortization of unrecognized prior service benefit						(2)		(6)
Net periodic benefit cost	$	(1)	$	(4)	$	(2)	$	(6)