Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2016

Compensation and Retirement Disclosure [Abstract]

Schedule of net benefit costs

The following table shows the components of net periodic cost:

	Pension Benefits						Other Postretirement and Postemployment Benefits
(in millions)	2016			2015			2016			2015
Three Months Ended September 30,
Service cost	$	—		$	—		$	17		$	16
Interest cost	229			221			37			35
Expected return on plan assets	(226		)	(220		)	(18		)	(20		)
Amortization of prior service credit	—			—			(7		)	(7		)
Recognized net actuarial loss	59			61			6			6
Net periodic cost	$	62		$	62		$	35		$	30
Nine Months Ended September 30,
Service cost	$	—		$	—		$	51		$	48
Interest cost	687			663			111			105
Expected return on plan assets	(678		)	(660		)	(54		)	(60		)
Amortization of prior service credit	—			—			(21		)	(21		)
Recognized net actuarial loss	177			177			18			18
Net periodic cost	$	186		$	180		$	105		$	90