Income Taxes (Consolidated Effective Income Tax Rate Differed From The U.S. Federal Statutory Income Tax Rate) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Income Tax Expense (Benefit), Continuing Operations [Abstract]
Income tax expense computed at the federal statutory rate	$ 75,300	$ 70,100	$ 65,800
Income tax expense computed at the federal statutory rate, percentage	35.00%	35.00%	35.00%
State income taxes, net of federal benefit	$ 4,300	$ 5,100	$ 5,400
State income taxes, net of federal benefit, percentage	2.00%	2.50%	2.90%
Foreign rate differential	$ (12,800)	$ (4,300)	$ (4,900)
Foreign rate differential, percentage	(5.90%)	(2.20%)	(2.60%)
Change in valuation allowances	$ 13,300	$ (800)	$ (500)
Change in valuation allowances, percentage	6.20%	(0.40%)	(0.30%)
Change in reserves	$ (5,700)	$ (2,100)	$ (5,200)
Change in reserves, percentage	(2.70%)	(1.00%)	(2.80%)
Research and development	$ (9,000)	$ (13,400)	$ (3,300)
Research and development, percentage	(4.20%)	(6.70%)	(1.70%)
Effective Income Tax Rate Reconciliation, Tax Credit, Other, Amount	$ 2,800	$ (1,800)	$ (300)
Effective Income Tax Rate Reconciliation, Tax Credit, Other, Percent	1.30%	(0.90%)	(0.20%)
Non-deductible losses	$ (12,900)	$ 0	$ 0
Non-deductible losses, percentage	(6.00%)	0.00%	0.00%
Other non-deductible expenses, Percentage	0.70%	0.60%	0.00%
Other non-deductible expenses	$ 1,500	$ 1,300	$ 0
Statutory tax rate changes	$ 200	$ (600)	$ (600)
Statutory tax rate changes, percentage	0.10%	(0.20%)	(0.30%)
Other, net	$ 3,300	$ (1,100)	$ 2,400
Other, net, percentage	1.50%	(0.50%)	1.30%
Provision for income taxes	$ 60,300	$ 52,400	$ 58,800
Consolidated effective income tax rate, percentage	28.00%	26.20%	31.30%