Acquisitions ClinIntel Acquisition (Details) - USD ($) $ in Millions			6 Months Ended	12 Months Ended
	Jan. 19, 2016	Oct. 03, 2014	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired				$ 67.3	$ 104.5	$ 0.1
Business Combination, Contingent Consideration, Liability			$ 7.3	5.2	7.3
Business Combination, Consideration Transferred	$ 71.6
Goodwill			354.9	389.2	354.9	329.5
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability			$ 8.2	8.7	(7.4)
Payment of contingent consideration				9.9	$ 0.0	$ 0.0
ClinIntel Acquisition [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired		$ 8.8
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High		16.2
Business Combination, Contingent Consideration, Liability		9.9
Business Combination, Consideration Transferred		18.7
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables		0.4
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		6.2
Goodwill		13.4
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets		20.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities		0.1
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities, Current		1.2
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities		1.3
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net		$ 18.7
Business Combination, Contingent Consideration Payment Period		21 months
Payment of contingent consideration				$ 14.1
Customer Relationships [Member] | ClinIntel Acquisition [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		$ 2.3
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		10 years
Technology-Based Intangible Assets [Member] | ClinIntel Acquisition [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		$ 3.9
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		8 years