Retirement Benefit Liabilities

9 Months Ended

Jun. 30, 2015

Compensation and Retirement Disclosure [Abstract]

Retirement Benefit Liabilities

Retirement Benefit Liabilities

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

	June 30, 2015			September 30, 2014
Retiree medical liability	$	463		$	479
Pension liability	293			323
Other	16			16
Subtotal	772			818
Less: current portion (included in compensation and benefits, Note 14)	(43		)	(43		)
Retirement benefits	$	729		$	775

The components of net periodic pension and retiree medical expense included in continuing operations for the three months ended June 30 are as follows (in millions):

	2015						2014
	Pension			Retiree Medical			Pension			Retiree Medical
Service cost	$	1		$	—		$	1		$	—
Interest cost	17			5			19			6
Assumed return on plan assets	(28		)	—			(26		)	—
Amortization of prior service costs	—			(1		)	—			(2		)
Recognized actuarial loss	6			6			6			6
Total expense (income)	$	(4	)	$	10		$	—		$	10

The components of net periodic pension and retiree medical expense included in continuing operations for the nine months ended June 30 are as follows (in millions):

	2015						2014
	Pension			Retiree Medical			Pension			Retiree Medical
Service cost	$	1		$	—		$	1		$	—
Interest cost	53			15			59			19
Assumed return on plan assets	(84		)	—			(78		)	—
Amortization of prior service costs	—			(1		)	—			(6		)
Recognized actuarial loss	20			16			18			17
Total expense (income)	$	(10	)	$	30		$	—		$	30