Income Taxes (Schedule Of Provision For Income Tax Differ From The Amount Of Income Tax) (Details) - USD ($) $ in Thousands		12 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Income Taxes [Abstract]
Taxes computed at statutory U.S. rate		$ 153,949	$ 108,958	$ 146,280
Transition tax			6,038	126,753
State income taxes, net of U.S. tax benefit		3,563	2,186	2,427
Research and development credit		(13,595)	(12,953)	(4,089)
Change in statutory tax rates				16,685
Change in valuation allowance		7,216	(1,118)	(2,962)
Effect of non-U.S. tax rates		(20,935)	25,045	(70,250)
Foreign tax credits	[1]	(4,026)	(7,806)	(6,473)
Stock-based compensation expense		(20,696)	(11,534)	(7,045)
Other		5,938	5,439	4,398
Provision for income taxes		$ 111,414	114,255	$ 205,724
Foreign tax credit included as a reduction in transition tax			$ 75,500

[1] In fiscal year 2018, $75.5 million of the foreign tax credit is included as a reduction in the transition tax.