Retirement Benefit Liabilities

6 Months Ended

Mar. 31, 2015

Compensation and Retirement Disclosure [Abstract]

Retirement Benefit Liabilities

Retirement Benefit Liabilities

Retirement benefit liabilities consisted of the following (in millions):

	March 31, 2015			September 30, 2014
Retiree medical liability	$	468		$	479
Pension liability	297			323
Other	15			16
Subtotal	780			818
Less: current portion (included in compensation and benefits, Note 14)	(43		)	(43		)
Retirement benefits	$	737		$	775

The components of net periodic pension and retiree medical expense included in continuing operations for the three months ended March 31 are as follows (in millions):

	2015					2014
	Pension			Retiree Medical		Pension			Retiree Medical
Interest cost	18			5		20			7
Assumed return on plan assets	(28		)	—		(26		)	—
Amortization of prior service costs	—			—		—			(2		)
Recognized actuarial loss	7			5		6			5
Total expense (income)	$	(3	)	$	10	$	—		$	10

The components of net periodic pension and retiree medical expense included in continuing operations for the six months ended March 31 are as follows (in millions):

	2015					2014
	Pension			Retiree Medical		Pension			Retiree Medical
Interest cost	36			10		40			13
Assumed return on plan assets	(56		)	—		(52		)	—
Amortization of prior service costs	—			—		—			(4		)
Recognized actuarial loss	14			10		12			11
Total expense	$	(6	)	$	20	$	—		$	20