Employee Benefit Plans

6 Months Ended

Mar. 31, 2013

Compensation And Retirement Disclosure [Abstract]

Employee Benefit Plans

E. Employee Benefit Plans

Net periodic defined benefit pension and other postretirement benefit costs include the following:

	Three Months Ended March 31
	2013						2012						2013					2012
	Pension Benefits												Postretirement Benefits
	U.S.			Foreign			U.S.			Foreign			U.S.			Foreign		U.S.			Foreign
	(Dollars in millions)
Service cost	$	2		$	3		$	2		$	2		$	—		$	—	$	—		$	—
Interest cost		1			3			1			2			—			—		—			—
Expected return on plan assets		(2	)		(4	)		(2	)		(3	)		—			—		—			—
Amortization of prior service credit		—			—			—			—			(1	)		—		(1	)		—
Amortization of actuarial loss		—			1			1			—			—			—		—			—
Curtailment loss		—			—			—			1			—			—		—			—
Net periodic benefit cost	$	1		$	3		$	2		$	2		$	(1	)	$	—	$	(1	)	$	—
	Six Months Ended March 31
	2013						2012						2013					2012
	Pension Benefits												Postretirement Benefits
	U.S.			Foreign			U.S.			Foreign			U.S.			Foreign		U.S.			Foreign
	(Dollars in millions)
Service cost	$	3		$	5		$	3		$	3		$	—		$	—	$	—		$	—
Interest cost		3			7			3			5			1			—		1			—
Expected return on plan assets		(5	)		(9	)		(4	)		(6	)		—			—		—			—
Amortization of prior service credit		—			—			—			—			(2	)		—		(2	)		—
Amortization of actuarial loss		1			2			1			1			—			—		—			—
Curtailment loss		—			—			—			1			—			—		—			—
Net periodic benefit cost	$	2		$	5		$	3		$	4		$	(1	)	$	—	$	(1	)	$	—

Curtailment of employee benefit plan

During the three and six months ended March 31, 2012, the Company incurred a curtailment loss in foreign employee benefit plans as a result of freezing two defined benefit plans in foreign affiliates.