Pension and Other Postretirement Benefits (Tables)

9 Months Ended

Jun. 30, 2014

Pension and Other Postretirement Benefit Expense [Abstract]

Schedule of net benefit costs and assumptions used in calculation

The following tables provide the components of net periodic benefit cost for the plans.

	Pension Benefits
	Three Months Ended June 30,						Nine Months Ended June 30,
	2014			2013			2014			2013
Components of net periodic benefit cost
Service cost	$	0.9		$	1.0		$	2.7		$	3.1
Interest cost	0.6			0.5			1.7			1.3
Expected return on plan assets	(0.5		)	(0.4		)	(1.6		)	(1.2		)
Recognized net actuarial loss	0.1			0.3			0.5			0.8
Recognized prior service cost	0.1			0.1			0.3			0.3
Curtailment cost	—			1.7			—			1.7
Net periodic benefit cost	$	1.2		$	3.2		$	3.6		$	6.0

	Other Benefits
	Three Months Ended June 30,						Nine Months Ended June 30,
	2014			2013			2014			2013
Components of net periodic benefit cost
Service cost	$	0.5		$	0.6		$	1.5		$	1.8
Interest cost	1.1			1.0			3.4			3.0
Recognized net actuarial loss	0.1			0.4			0.3			1.3
Recognized prior service credit	(0.6		)	(0.3		)	(1.8		)	(0.9		)
Net periodic benefit cost	$	1.1		$	1.7		$	3.4		$	5.2