Acquisitions The Medical Affairs Company (Details) - USD ($) $ in Thousands					9 Months Ended	12 Months Ended
	Mar. 01, 2017	Oct. 03, 2016	Feb. 10, 2016	Jan. 19, 2016	Mar. 31, 2017	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Business Acquisition [Line Items]
Goodwill, Acquired During Period							$ 0
Payments to Acquire Businesses, Net of Cash Acquired						$ 184,600	67,300	$ 104,500
Business Combination, Contingent Consideration, Liability						18,000	5,200
Goodwill						476,300	389,200	$ 354,900
ExecuPharm Inc. [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross		$ 148,900
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High		20,000
Goodwill, Acquired During Period						58,600
Payments to Acquire Businesses, Net of Cash Acquired		148,500
Business Combination, Contingent Consideration, Liability		9,400
Business Combination, Consideration Transferred			$ 167,200
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables		29,200
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets		100
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment		900
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		87,100			$ 87,100
Goodwill		58,600
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets		175,900
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities		8,700
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities		8,700
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net		167,200
ExecuPharm Inc. [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		$ 1,600
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		2 years
ExecuPharm Inc. [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles					$ 85,500
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life					15 years
Health Advances Acquisition [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross				$ 67,300
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High				15,800
Business Combination, Receivable from Working Capital Adjustment				(200)	$ 200
Goodwill, Acquired During Period							$ 52,500
Payments to Acquire Businesses, Net of Cash Acquired				67,100
Business Combination, Contingent Consideration, Liability				4,500
Business Combination, Consideration Transferred				71,600
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables				4,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets				700
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment				1,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles				15,000
Goodwill				52,500
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets				73,400
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities				1,800
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities				1,800
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net				71,600
Health Advances Acquisition [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles				$ 1,600
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				5 years
Health Advances Acquisition [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles				$ 11,600
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				10 years
TMAC [Member] [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	$ 37,700
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	11,000
Goodwill, Acquired During Period						$ 25,800
Payments to Acquire Businesses, Net of Cash Acquired	36,300
Business Combination, Contingent Consideration, Liability	2,100
Business Combination, Consideration Transferred	38,400
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables	4,700
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets	100
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	300
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	10,200				10,200
Goodwill	25,800
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	41,100
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	2,700
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	2,700
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	$ 38,400
TMAC [Member] [Member] | Order or Production Backlog [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles				$ 2,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				1 year
TMAC [Member] [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles					$ 700
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life					3 years
TMAC [Member] [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles					$ 7,500
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life					10 years