Employee Benefit Plans (Note)

3 Months Ended

Mar. 31, 2013

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]

Employee Benefit Plans

Employee benefit plans

The components of net periodic benefit cost are as follows:

Net periodic benefit cost (credit)	Quarter ended
	March 31, 2013									March 31, 2012
(in millions)	Domestic pension benefits			Foreign pension benefits			Health care benefits			Domestic pension benefits			Foreign pension benefits			Health care benefits
Service cost	$	16		$	9		$	1		$	15		$	8		$	1
Interest cost	43			10			2			42			9			3
Expected return on assets	(73		)	(12		)	(2		)	(68		)	(12		)	(2		)
Other	47			4			1			38			3			3
Net periodic benefit cost	$	33		$	11		$	2		$	27		$	8		$	5