Retirement Plans (Tables)

3 Months Ended

Mar. 31, 2013

Retirement Plans [Abstract]

Net Periodic Pension And OPEB Cost/(Benefit) [Table Text Block]

The components of our net periodic pension and OPEB cost/(benefit) were as follows for the three months ended March 31:

	Pension					OPEB
Millions	2013		2012		2013		2012
Service cost	$	19	$	13	$	1	$	1
Interest cost		33		35		3		3
Expected return on plan assets		(51)		(47)		-		-
Amortization of:
Prior service credit		-		-		(4)		(4)
Actuarial loss		26		21		4		3
Net periodic pension cost	$	27	$	22	$	4	$	3