Condensed Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	$ 8,400	$ (36,100)	$ (18,800)	$ (105,000)
Revenues [Abstract]
Service revenue	527,100	502,000	1,557,700	1,493,000
Reimbursement revenue	84,300	74,400	243,100	232,100
Total revenue	611,400	576,400	1,800,800	1,725,100
Costs and Expenses [Abstract]
Direct costs	337,800	338,000	1,013,500	984,100
Reimbursable out-of-pocket expenses	84,300	74,400	243,100	232,100
Selling, general and administrative	97,100	88,600	289,400	286,400
Depreciation	18,400	17,900	54,300	51,600
Amortization of Intangible Assets	5,900	3,400	17,300	10,500
Restructuring charge (benefit)	(1,800)	(100)	23,400	(200)
Total costs and expenses	541,700	522,200	1,641,000	1,564,500
Income from operations	69,700	54,200	159,800	160,600
Interest Income (Expense), Net	(2,300)	(1,800)	(6,000)	(5,400)
Miscellaneous income (expense)	(300)	1,300	1,400	7,600
Total other income (expense)	(2,600)	(500)	(4,600)	2,200
Income before income taxes	67,100	53,700	155,200	162,800
Provision for income taxes	19,200	16,000	43,000	49,200
Net income	$ 47,900	$ 37,700	$ 112,200	$ 113,600
Earnings per common share
Basic	$ 0.91	$ 0.69	$ 2.09	$ 2.07
Diluted	$ 0.89	$ 0.68	$ 2.06	$ 2.04
Shares used in computing earnings per common share
Basic	52,900	54,900	53,700	54,800
Diluted	53,600	55,800	54,500	55,800