Accumulated Other Comprehensive Income (Loss) (Summary Of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	$ 3,244,166	$ 3,263,853	$ 3,252,228	$ 3,209,250	$ 3,239,354	$ 3,285,447
Balance	3,247,595	3,244,166	3,263,853	3,233,738	3,209,250	3,239,354
Foreign Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	15,545	17,701	14,130	4,490	(731)	(7,084)
Change associated with foreign currency translation	3,693	(2,156)	3,571	11,526	5,221	6,353
Balance	19,238	15,545	17,701	16,016	4,490	(731)
Cash Flow Hedge [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(2,749)	(2,790)	(2,909)	(6,468)	(4,472)	(288)
Change associated with current period hedging	3,887	(502)	(294)	(383)	(2,277)	(4,459)
Reclassification into earnings	708	543	413	302	281	275
Balance	1,846	(2,749)	(2,790)	(6,549)	(6,468)	(4,472)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	12,796	14,911	11,221	(1,978)	(5,203)	(7,372)
Change associated with foreign currency translation	3,693	(2,156)	3,571	11,526	5,221	6,353
Change associated with current period hedging	3,887	(502)	(294)	(383)	(2,277)	(4,459)
Reclassification into earnings	708	543	413	302	281	275
Balance	$ 21,084	$ 12,796	$ 14,911	$ 9,467	$ (1,978)	$ (5,203)