Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2012

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 Nine Months Ended September 30,						For the Three Months Ended September 30,
	2012			2011			2012			2011
	(in millions)
Service cost	$	59		$	56		$	19		$	18
Interest cost	258			263			86			88
Expected return on plan assets	(331		)	(317		)	(110		)	(106		)
Amortization:
Net loss	168			129			56			43
Prior service cost	8			10			3			3
Net periodic pension cost	$	162		$	141		$	54		$	46

Postretirement Health Care Costs

Net postretirement health care costs consisted of the following:

	For the Nine Months Ended September 30,						For the Three Months Ended September 30,
	2012			2011			2012			2011
	(in millions)
Service cost	$	16		$	25		$	5		$	8
Interest cost	87			104			27			35
Amortization:
Net loss	34			30			10			11
Prior service credit	(32		)	(16		)	(9		)	(5		)
Curtailment gain	(26		)	—			—			—
Net postretirement health care costs	$	79		$	143		$	33		$	49