Pension And Other Postretirement Benefits (Tables)

9 Months Ended

Mar. 31, 2012

Pension And Other Postretirement Benefits [Abstract]

Components Of The Net Periodic Benefit Cost

Three months ended March 31, ($ in millions)	Pension Plans						Other Postretirement Plans
	2012			2011			2012			2011
Service cost	$	5.8		$	5.7		$	1.0		$	0.7
Interest cost		12.8			11.6			2.9			2.7
Expected return on plan assets		(13.5	)		(11.3	)		(1.6	)		(1.3	)
Amortization of net loss		4.4			7.2			0.6			1.5
Amortization of prior service cost (benefit)		0.2			0.3			(2.0	)		(1.9	)
Net pension expense	$	9.7		$	13.5		$	0.9		$	1.7
Nine months ended March 31, ($ in millions)	Pension Plans						Other Postretirement Plans
	2012			2011			2012			2011
Service cost	$	16.9		$	17.1		$	2.3		$	2.0
Interest cost		37.5			34.8			8.4			8.2
Expected return on plan assets		(39.7	)		(33.9	)		(4.8	)		(3.9	)
Amortization of net loss		13.2			21.6			1.9			4.4
Amortization of prior service cost (benefit)		0.5			0.9			(5.9	)		(5.7	)
Net pension expense	$	28.4		$	40.5		$	1.9		$	5.0