Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2015

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)	2015			2014			2015			2014
Three Months Ended June 30,
Service cost	$	—		$	—		$	16		$	13
Interest cost	221			232			35			39
Expected return on plan assets	(220		)	(207		)	(20		)	(21		)
Amortization of prior service credit	—			—			(7		)	(7		)
Recognized net actuarial loss	58			33			6			1
Net periodic cost	$	59		$	58		$	30		$	25
Six Months Ended June 30,
Service cost	$	—		$	—		$	32		$	26
Interest cost	442			464			70			78
Expected return on plan assets	(440		)	(414		)	(40		)	(42		)
Amortization of prior service credit	—			—			(14		)	(14		)
Recognized net actuarial loss	116			67			12			2
Net periodic cost	$	118		$	117		$	60		$	50