Income Taxes (Effective Income Tax Rate Reconciliation) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Income Loss From Operations Before Provision Benefit For Income Taxes [Line Items]
Provision for income taxes at U.S. statutory rate, Rate	35.00%	35.00%	35.00%
State taxes, net of federal tax, Rate	2.40%	1.30%	1.60%
Foreign taxes, Rate	(2.80%)	(0.50%)	(1.40%)
Valuation allowances, Rate	1.60%	(1.70%)	(2.80%)
Advance pricing agreement adjustment, Rate		1.90%
Other, Rate	1.60%	0.30%	1.80%
Effective rate of provision for imcome taxes	37.80%	36.30%	34.20%
Provision for income taxes at U.S. statutory rate, Amount	$ 70.3	$ 94.4	$ 119.7
State taxes, net of federal tax, Amount	4.8	3.6	8.6
Foreign taxes, Amount	(5.7)	(1.4)	(4.6)
Valuation allowances on tax attributes, Amount	3.2	(4.5)	(9.5)
Advance pricing agreement adjustment, Amount		4.9
Other, Amount	3.3	0.9	2.8
Total provision for income taxes	$ 75.9	$ 97.9	$ 117.0