Accumulated Other Comprehensive Income (Loss) (Summary Of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Jun. 30, 2020
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	$ 3,263,853	$ 3,252,228	$ 3,239,354	$ 3,285,447
Balance	3,244,166	3,263,853	3,209,250	3,239,354
Foreign Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	17,701	14,130	(731)	(7,084)
Change associated with foreign currency translation	(2,156)	3,571	5,221	6,353
Balance	15,545	17,701	4,490	(731)
Cash Flow Hedge [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(2,790)	(2,909)	(4,472)	(288)
Change associated with current period hedging	(502)	(294)	(2,277)	(4,459)
Reclassification into earnings	543	413	281	275
Balance	(2,749)	(2,790)	(6,468)	(4,472)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	14,911	11,221	(5,203)	(7,372)
Change associated with foreign currency translation	(2,156)	3,571	5,221	6,353
Change associated with current period hedging	(502)	(294)	(2,277)	(4,459)
Reclassification into earnings	543	413	281	275
Balance	$ 12,796	$ 14,911	$ (1,978)	$ (5,203)