Pension And Postretirement Plan Expenses

9 Months Ended

Jun. 30, 2013

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

Pension And Postretirement Plan Expenses

Total periodic pension and postretirement expense is summarized below (in millions):

	Three Months Ended June 30,					Nine Months Ended June 30,
	2012			2013		2012		2013
Service cost	$	22		26		64		79
Interest cost	60			56		179		169
Expected return on plan assets	(80		)	(83	)	(239	)	(249	)
Net amortization	43			58		129		174
Total	$	45		57		133		173

Higher expense primarily reflects a lower discount rate in 2013 compared to 2012.