Income Taxes (Tables)

9 Months Ended

Mar. 31, 2013

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Provision from Continuing Operations

Significant components of the provision for income taxes from continuing operations are as follows (in millions).

	Nine months ended March 31,
	2012		2013
Current:
Federal	$	2.2	$	11.5
State	2.8		0.2
Total current	5.0		11.7
Deferred:
Federal	13.4		13.9
State	0.7		0.4
Total deferred	14.1		14.3
Change in valuation allowance	1.3		(1.5		)
Total income tax expense	$	20.4	$	24.5