Operating Leases (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Operating Leases
Rent expense total	$ 9.8	$ 7.3	$ 6.8
Future minimum payments for non-cancellable operating leases, 2013	12.1
Future minimum payments for non-cancellable operating leases, 2014	8.6
Future minimum payments for non-cancellable operating leases, 2015	5.3
Future minimum payments for non-cancellable operating leases, 2016	2.7
Future minimum payments for non-cancellable operating leases, 2017	1.1
Future minimum payments for non-cancellable operating leases, thereafter	$ 3.2