Employment Benefit Plans

6 Months Ended

Jun. 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 June 30,
Net Cost	2015			2014
Service cost	$	12		$	9
Interest cost	22			24
Expected return on plan assets	(35		)	(33		)
Amortization of net loss	1			—
Net cost recognized	$	—		$	—

	Pension Benefits
	Six Months Ended June 30,
Net Cost	2015			2014
Service cost	$	24		$	19
Interest cost	45			48
Expected return on plan assets	(70		)	(67		)
Amortization of net loss	1			—
Net cost recognized	$	—		$	—

	Retiree Health and Welfare Benefits
	Three Months Ended June 30,
Net Cost	2015		2014
Interest cost	$	3	$	3
Amortization of prior service credits	—		—
Amortization of net loss	—		—
Net cost recognized	$	3	$	3

	Retiree Health and Welfare Benefits
	Six Months Ended June 30,
Net Cost	2015			2014
Interest cost	$	5		$	6
Amortization of prior service credits	(1		)	(1		)
Amortization of net loss	1			1
Net cost recognized	$	5		$	6