Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2014

Pension Plan [Member]

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Schedule of Net Benefit Costs [Table Text Block]

Net periodic pension cost consisted of the following:

	For the Six Months Ended June 30,						For the Three Months Ended June 30,
	2014			2013			2014			2013
	(in millions)
Service cost	$	34		$	43		$	17		$	22
Interest cost	172			157			86			79
Expected return on plan assets	(260		)	(247		)	(130		)	(124		)
Amortization:
Net loss	75			136			37			67
Prior service cost	5			5			2			2
Net periodic pension cost	$	26		$	94		$	12		$	46

Other Postretirement Benefit Plan, Defined Benefit [Member]

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Schedule of Net Benefit Costs [Table Text Block]

Net postretirement health care costs consisted of the following:

	For the Six Months Ended June 30,						For the Three Months Ended June 30,
	2014			2013			2014			2013
	(in millions)
Service cost	$	8		$	10		$	4		$	5
Interest cost	54			51			27			26
Amortization:
Net loss	14			28			7			14
Prior service credit	(21		)	(22		)	(10		)	(11		)
Net postretirement health care costs	$	55		$	67		$	28		$	34