Pension And Postretirement Plan Expenses

6 Months Ended

Mar. 31, 2014

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 March 31,					Six Months Ended March 31,
	2013			2014		2013		2014
Service cost	$	27		23		53		47
Interest cost	57			60		113		122
Expected return on plan assets	(83		)	(86	)	(166	)	(172	)
Net amortization	58			37		116		73
Total	$	59		34		116		70

Lower expense primarily reflects the impact of the higher interest rate environment and favorable investment performance the last two years.