Operating Leases (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Operating Leases
Rent expense total	$ 12.3	$ 9.8	$ 7.3
Future minimum payments for non-cancellable operating leases, 2014	11.0
Future minimum payments for non-cancellable operating leases, 2015	7.8
Future minimum payments for non-cancellable operating leases, 2016	4.2
Future minimum payments for non-cancellable operating leases, 2017	2.3
Future minimum payments for non-cancellable operating leases, 2018	1.8
Future minimum payments for non-cancellable operating leases, thereafter	$ 7.2