Pension and Other Postretirement Benefits (Tables)

9 Months Ended

Mar. 31, 2013

Pension and Other Postretirement Benefits

Schedule of components of the net periodic benefit cost

Three months ended March 31,							Other Postretirement
($ in millions)	Pension Plans						Plans
	2013			2012			2013			2012
Service cost	$	8.3		$	5.8		$	1.1		$	1.0
Interest cost	13.3			12.8			3.0			2.9
Expected return on plan assets	(13.7		)	(13.5		)	(1.6		)	(1.6		)
Amortization of net loss	7.0			4.4			0.8			0.6
Amortization of prior service cost (benefit)	0.2			0.2			(1.0		)	(2.0		)
Net pension expense	$	15.1		$	9.7		$	2.3		$	0.9

Nine months ended March 31,							Other Postretirement
($ in millions)	Pension Plans						Plans
	2013			2012			2013			2012
Service cost	$	24.4		$	16.9		$	3.3		$	2.3
Interest cost	39.8			37.5			9.1			8.4
Expected return on plan assets	(41.1		)	(39.7		)	(4.8		)	(4.8		)
Amortization of net loss	21.0			13.2			2.4			1.9
Amortization of prior service cost (benefit)	0.6			0.5			(3.0		)	(5.9		)
Net pension expense	$	44.7		$	28.4		$	7.0		$	1.9