Employee Benefit 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

Components of net periodic other post-employment benefit cost were as follows (in millions):

	Three Months Ended March 31,						Six Months Ended March 31,
	2014			2013			2014			2013
Components of net periodic benefit cost
Service cost	$	0.6		$	1.8		$	1.2		$	3.8
Interest cost	0.5			0.8			1.0			1.6
Amortization of prior service cost	(0.4		)	(0.1		)	(0.8		)	(0.2		)
Curtailment	—			(1.0		)	—			(1.0		)
Amortization of net actuarial loss	—			0.3			0.1			0.6
Net periodic benefit cost	$	0.7		$	1.8		$	1.5		$	4.8

Components of net periodic pension benefit cost were as follows (in millions):

	Three Months Ended March 31,						Six Months Ended March 31,
	2014			2013			2014			2013
Components of net periodic benefit cost
Service cost	$	2.8		$	3.6		$	5.6		$	7.6
Interest cost	4.4			4.0			8.8			8.0
Expected return on plan assets	(4.8		)	(4.1		)	(9.3		)	(8.3		)
Amortization of prior service cost	0.6			0.4			1.0			0.9
Curtailment	4.1			1.9			4.1			2.8
Amortization of net actuarial loss	0.3			1.1			0.5			2.2
Net periodic benefit cost	$	7.4		$	6.9		$	10.7		$	13.2