Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2014

Compensation and Retirement Disclosure [Abstract]

Components of net periodic cost (benefit)

Net Periodic Cost (Benefit)

Periods ended September 30	Three Months						Nine Months
(In millions)	2014			2013			2014			2013
Pension cost (benefit)
Service cost	$	3		$	3		$	7		$	9
Interest cost on projected benefit obligation	33			30			99			90
Expected return on plan assets	(48		)	(45		)	(144		)	(135		)
Amortization of net actuarial loss	6			10			19			34
Settlement loss	—			3			—			3
Net periodic pension cost (benefit)	$	(6	)	$	1		$	(19	)	$	1
Postretirement cost (benefit)
Interest cost on projected benefit obligation	$	—		$	—		$	1		$	1
Amortization of prior service credit	—			(4		)	(9		)	(13		)
Amortization of net actuarial loss	—			1			—			1
Curtailment gain	—			—			(86		)	—
Net periodic postretirement cost (benefit)	$	—		$	(3	)	$	(94	)	$	(11	)