Pension and Other Postretirement Benefits (Tables)

3 Months Ended

Sep. 30, 2012

Pension and Other Postretirement Benefits

Schedule of components of the net periodic benefit cost

Three months ended September 30,					Other Postretirement
($ in millions)	Pension Plans				Plans
	2012		2011		2012		2011
Service cost	$	8.1	$	5.6	$	1.1	$	0.7
Interest cost	13.3		12.3		3.0		2.7
Expected return on plan assets	(13.7)		(13.0)		(1.6)		(1.6)
Amortization of net loss	7.0		0.2		0.8		0.6
Amortization of prior service cost (benefit)	0.2		4.4		(1.0)		(2.0)
Net pension expense	$	14.9	$	9.5	$	2.3	$	0.4