Condensed Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	$ (26,000)	$ (12,200)	$ (22,200)	$ (27,200)
Revenues [Abstract]
Service revenue	534,400	518,500	1,031,100	1,030,600
Reimbursement revenue	77,800	85,700	157,600	158,800
Total revenue	612,200	604,200	1,188,700	1,189,400
Costs and Expenses [Abstract]
Direct costs	350,900	332,500	678,600	675,700
Reimbursable out-of-pocket expenses	77,800	85,700	157,600	158,800
Selling, general and administrative	95,600	97,400	187,800	192,300
Depreciation	19,100	17,900	38,400	35,900
Amortization of Intangible Assets	7,200	5,700	12,700	11,400
Restructuring charge (benefit)		10,400	300	25,200
Total costs and expenses	552,200	549,600	1,075,400	1,099,300
Income from operations	60,000	54,600	113,300	90,100
Interest Income (Expense), Net	(2,800)	(2,100)	(5,400)	(3,700)
Miscellaneous income (expense)	(17,700)	(100)	(18,500)	1,700
Total other income (expense)	(20,500)	(2,200)	(23,900)	(2,000)
Income before income taxes	39,500	52,400	89,400	88,100
Provision for income taxes	17,700	13,000	29,800	23,800
Net income	$ 21,800	$ 39,400	$ 59,600	$ 64,300
Earnings per common share
Basic	$ 0.42	$ 0.74	$ 1.14	$ 1.19
Diluted	$ 0.41	$ 0.73	$ 1.12	$ 1.17
Shares used in computing earnings per common share
Basic	52,000	53,300	52,400	54,100
Diluted	52,700	54,000	53,200	54,900