Pension And Postretirement Plan Expenses

3 Months Ended

Dec. 31, 2011

Pension And Postretirement Plan Expenses [Abstract]

Pension And Postretirement Plan Expenses

4.  Net periodic pension and net postretirement plan expenses are summarized as follows (in millions):       

	Three months ended December 31,
	Pension						Postretirement
	2010			2011			2010			2011
Service cost	$	21			21			1			1
Interest cost		55			56			4			4
Expected return on plan assets		(82	)		(80	)
Net amortization		42			46			(2	)		(3	)
Total	$	36			43			3			2