Retirement Plans (Tables)

6 Months Ended

Mar. 31, 2014

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]

Schedule of Net Periodic Benefit Cost

The components of net periodic benefit cost allocated to continuing operations for defined benefit pension plans are as follows.

	Three months ended						Six months ended
	March 31,						March 31,
	2014			2013			2014			2013
	(in millions)
Service cost	$	0.4		$	0.5		$	0.8		$	1.0
Interest cost	5.0			1.6			10.0			3.2
Expected return on plan assets	(6.0		)	(2.2		)	(11.9		)	(4.3		)
Amortization of actuarial net loss	0.9			0.8			1.8			1.5
Net periodic benefit cost	$	0.3		$	0.7		$	0.7		$	1.4