Employee Benefit Plans (Tables)

3 Months Ended

Dec. 31, 2013

Compensation And Retirement Disclosure [Abstract]

Net Periodic Defined Benefit Pension and Other Postretirement Benefit Costs

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

	Three months ended December 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	$	1		$	2		$	1		$	2		$	—		$	—	$	—		$	—
Interest cost		2			4			2			4			1			—		1			—
Expected return on plan assets		(3	)		(5	)		(3	)		(5	)		—			—		(1	)		—
Amortization of prior service credit		—			—			—			—			(1	)		—		—			—
Amortization of actuarial loss		—			1			1			1			—			—		—			—
Net periodic benefit cost	$	—		$	2		$	1		$	2		$	—		$	—	$	—		$	—