Pension & Postretirement Expenses

3 Months Ended

Dec. 31, 2016

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 December 31,
		2015			2016
Service cost		$	22		21
Interest cost		50			42
Expected return on plan assets		(88		)	(86	)
Net amortization		40			53
Total		$	24		30