Summary Of Significant Accounting Policies (Narrative) (Details) (USD $)	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Investment Income, Interest		$ 3,800,000	$ 5,400,000
Interest Expense, Gross		11,100,000	12,400,000
Cash Equivalents, at Carrying Value	0
Investigator fees	523,100,000	421,200,000	250,800,000
Number of counterparties in derivative contracts	9
Research and development expense	26,900,000	23,800,000	21,000,000
Transaction (losses) gains	$ (3,500,000)	$ 4,100,000	$ 300,000
Office Furniture, Fixtures And Equipment [Member]
Estimated useful lives, minimum, years	5 years
Minimum [Member]
Marketable Securities Maturity Period	90 days
Minimum [Member] | Computer Software And Hardware [Member]
Estimated useful lives, minimum, years	3 years
Maximum [Member]
Marketable Securities Maturity Period	1 year
Maximum [Member] | Computer Software And Hardware [Member]
Estimated useful lives, minimum, years	8 years
Customer A [Member] | Sales Revenue, Services, Net [Member]
Percentage of consolidated service revenue attributable to largest client	16.00%	17.00%
Customer A [Member] | Accounts Receivable [Member]
Percentage of consolidated service revenue attributable to largest client	20.00%	18.00%
Customer B [Member] | Sales Revenue, Services, Net [Member]
Percentage of consolidated service revenue attributable to largest client	11.00%	12.00%