Restructuring Charges (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2009
Restructuring Charges
Restructuring charges			$ 9.4
Number of workers employed			35

Amount charged against earnings in the period for incurred and estimated costs, excluding asset retirement obligations, associated with exit from or disposal of business activities or restructurings pursuant to a program that is planned and controlled by management, and materially changes either the scope of a business undertaken by an entity, or the manner in which that business is conducted.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 5
-Section P
-Subsection 3, 4

Name:	us-gaap_RestructuringCharges
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration