Pension and Postretirement Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2013

Pension and Postretirement Benefit Plans

Components of net periodic benefit cost (benefit)

		Three months ended March 31,
		Qualified and Non-qualified
		Pension Benefits								Postretirement
		United States				International				Benefits
(Millions)		2013		2012		2013		2012		2013		2012
Net periodic benefit cost (benefit)
Service cost		$	64	$	63	$	36	$	31	$	20	$	19
Interest cost			150		147		61		61		22		22
Expected return on plan assets			(261)		(248)		(75)		(73)		(22)		(21)
Amortization of transition (asset) obligation			―		―		(1)		(1)		―		―
Amortization of prior service cost (benefit)			1		2		(4)		(4)		(17)		(18)
Amortization of net actuarial (gain) loss			100		117		40		30		24		27
Net periodic benefit cost (benefit)		$	54	$	81	$	57	$	44	$	27	$	29
Settlements, curtailments, special termination benefits and other			―		26		―		―		―		―
Net periodic benefit cost (benefit) after settlements, curtailments,
	special termination benefits and other	$	54	$	107	$	57	$	44	$	27	$	29