Segment Information (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended						0 Months Ended
	Jun. 30, 2013 Segments Reportable_Segments	Jun. 30, 2012 Reportable_Segments Segments	Jun. 30, 2011 Segments Reportable_Segments	Jun. 30, 2013 Corporate	Jun. 30, 2012 Corporate	Jun. 30, 2011 Corporate	Mar. 18, 2013 AssuraMed
Number of Operating Segments	2	2	2
Number of Reportable Segments	2	2	2
Business Acquisition, Effective Date of Acquisition							Mar. 18, 2013
Project costs on investment and other spending				$ 37	$ 21	$ 14