Share-Based Compensation (Details)	12 Months Ended
	Jun. 30, 2012	May 31, 2012
Share-based compensation awards available for grant or issuance
Stock options granted	(1,179,126)
Forfeited	364,738
Balance at June 2012	2,372,348
Awards Available under All Share Based Award Plans [Member]
Share-based compensation awards available for grant or issuance
Balance at June 2011		4,351,131
Stock options granted	(1,179,126)
Deferred stock units granted	(647,593)
Purchases under employee stock purchase plan	(242,225)
Forfeited	452,460
Plan shares expired	(362,299)
Balance at June 2012	2,372,348	4,351,131
2001 Incentive Compensation Plan [Member]
Share-based compensation awards available for grant or issuance
Forfeited	362,299
Plan shares expired	(362,299)
2010 Incentive Compensation Plan [Member]
Share-based compensation awards available for grant or issuance
Balance at June 2011		3,777,590
Stock options granted	(1,179,126)
Deferred stock units granted	(647,593)
Forfeited	90,161
Balance at June 2012	2,041,032	3,777,590
2010 Employee Stock Purchase Plan [Member]
Share-based compensation awards available for grant or issuance
Balance at June 2011		573,541
Purchases under employee stock purchase plan	(242,225)
Balance at June 2012	331,316	573,541