Pension And Other Postretirement Benefits (Tables)

6 Months Ended

Dec. 31, 2011

Pension And Other Postretirement Benefits [Abstract]

Components Of The Net Periodic Benefit Cost

Three months ended December 31, ($ in millions)	Pension Plans						Other Postretirement Plans
	2011			2010			2011			2010
Service cost	$	5.5		$	5.6		$	0.7		$	0.7
Interest cost		12.3			11.6			2.7			2.7
Expected return on plan assets		(13.0	)		(11.3	)		(1.6	)		(1.3	)
Amortization of net loss		4.3			7.2			0.6			1.5
Amortization of prior service cost (benefit)		0.2			0.3			(1.9	)		(1.9	)
Net pension expense	$	9.3		$	13.4		$	0.5		$	1.7

Six months ended December 31, ($ in millions)	Pension Plans						Other Postretirement Plans
	2011			2010			2011			2010
Service cost	$	11.1		$	11.3		$	1.4		$	1.4
Interest cost		24.6			23.2			5.4			5.5
Expected return on plan assets		(26.0	)		(22.6	)		(3.2	)		(2.5	)
Amortization of net loss		8.7			14.4			1.2			3.0
Amortization of prior service cost (benefit)		0.4			0.6			(3.9	)		(4.0	)
Net pension expense	$	18.8		$	26.9		$	0.9		$	3.4