Income Taxes (Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]
Lease liabilities	$ 222,808	$ 205,487
Deferred compensation	90,083	82,593
Receivable reserves	55,467	52,342
Unrealized loss on investments	54,706	51,549
Net operating loss carryforwards	56,882	45,879
Accrued expenses	35,782	15,457
Total deferred tax assets	515,728	453,307
Valuation allowance	(57,250)	(46,843)
Deferred tax assets	458,478	406,464
Lease right-of-use assets	(207,821)	(195,962)
Goodwill and other intangibles	(81,569)	(72,927)
Prepaid expenses	(8,031)	(6,966)
Depreciation	(5,069)	(3,620)
Other	(3,610)	(5,467)
Total deferred tax liabilities	(306,100)	(284,942)
Net deferred tax asset	$ 152,378	$ 121,522