Pension And Other Postretirement Benefits (Tables)

6 Months Ended

Mar. 31, 2012

Pension And Other Postretirement Benefits [Abstract]

Components Of Net Periodic Benefit Cost

	Three Months Ended March 31,						Six Months Ended March 31,
	2012			2011			2012			2011
Pension Benefits
Service cost	$	.6		$	.4		$	1.3		$	.9
Interest cost		3.0			2.7			5.9			5.5
Expected return on plan assets		(4.6	)		(4.2	)		(9.3	)		(8.5	)
Amortization of net loss		1.6			1.1			3.2			2.2
Net periodic benefit cost	$	.6		$	—		$	1.1		$	.1
Other Postretirement Benefits
Service cost	$	.1		$	(.1	)	$	.1		$	(.1	)
Interest cost		.4			.4			.9			.8
Amortization of net loss		.1			.1			.2			—
Net periodic benefit cost	$	.6		$	.4		$	1.2		$	.7