Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2013

General Discussion of Pension and Other Postretirement Benefits [Abstract]

Schedule Of Components Of Net Periodic Pension Cost

Net periodic pension cost consisted of the following:

	For the Six Months Ended June 30,						For the Three Months Ended June 30,
	2013			2012			2013			2012
	(in millions)
Service cost	$	43		$	40		$	22		$	20
Interest cost	157			172			79			86
Expected return on plan assets	(247		)	(221		)	(124		)	(110		)
Amortization:
Net loss	136			112			67			56
Prior service cost	5			5			2			2
Net periodic pension cost	$	94		$	108		$	46		$	54

Postretirement Health Care Costs

Net postretirement health care costs consisted of the following:

	For the Six Months Ended June 30,						For the Three Months Ended June 30,
	2013			2012			2013			2012
	(in millions)
Service cost	$	10		$	11		$	5		$	6
Interest cost	51			60			26			30
Amortization:
Net loss	28			24			14			12
Prior service credit	(22		)	(23		)	(11		)	(12		)
Curtailment gain	—			(26		)	—			—
Net postretirement health care costs	$	67		$	46		$	34		$	36