Segment Reporting (Schedule Of Net Revenues Earned On Major Geographical Areas) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting Information [Line Items]
Total net revenues	$ 1,050,721	$ 1,108,126	$ 2,157,514	$ 2,224,653
United States [Member]
Segment Reporting Information [Line Items]
Total net revenues	965,997	1,042,369	2,004,892	2,097,471
United Kingdom [Member]
Segment Reporting Information [Line Items]
Total net revenues	53,563	49,992	86,760	93,856
Canada [Member]
Segment Reporting Information [Line Items]
Total net revenues	6,853	5,933	28,831	13,384
Other [Member]
Segment Reporting Information [Line Items]
Total net revenues	$ 24,308	$ 9,832	$ 37,031	$ 19,942