Employment Benefit Plans

9 Months Ended

Sep. 30, 2015

Compensation and Retirement Disclosure [Abstract]

Employment Benefit Plans

Employment Benefit Plans

Components of the net cost for the periods presented below for certain employee benefit plans were as follows (in millions):

	Pension Benefits
	Three Months Ended September 30,
Net Cost	2015			2014
Service cost	$	12		$	10
Interest cost	23			23
Expected return on plan assets	(34		)	(34		)
Amortization of net loss	—			—
Net cost recognized	$	1		$	(1	)

	Pension Benefits
	Nine Months Ended September 30,
Net Cost	2015			2014
Service cost	$	36		$	29
Interest cost	68			71
Expected return on plan assets	(104		)	(101		)
Amortization of net loss	1			—
Net cost recognized	$	1		$	(1	)

	Retiree Health and Welfare Benefits
	Three Months Ended September 30,
Net Cost	2015			2014
Service cost	$	1		$	1
Interest cost	2			3
Amortization of prior service credits	(1		)	(1		)
Amortization of net loss	1			—
Net cost recognized	$	3		$	3

	Retiree Health and Welfare Benefits
	Nine Months Ended September 30,
Net Cost	2015			2014
Service cost	$	1		$	1
Interest cost	7			9
Amortization of prior service credits	(2		)	(2		)
Amortization of net loss	2			1
Net cost recognized	$	8		$	9