Pensions, Other Post-employment Benefits and Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2016

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Periodic Benefit Costs

Components of net periodic benefit cost for the three months ended March 31, 2016 and 2015 are as follows:

	Pension Benefits						OPEB
	Three Months Ended March 31,						Three Months Ended March 31,
	2016			2015			2016			2015
	(in millions)
Service cost	$	4		$	5		$	—		$	—
Interest cost	17			16			3			3
Expected return on plan assets	(14		)	(17		)	—			—
Amortization of actuarial losses	5			7			1			2
Amortization of prior service credit	—			—			(1		)	(1		)
	$	12		$	11		$	3		$	4