Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities
Net income	$ 107,267	$ 68,978	$ 203,785
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	69,618	59,132	101,178
Amortization of operating lease right-of-use assets	33,235	29,394	44,078
Loss on impairment of assets	3,073	144	73,756
Loss (gain) on sales and disposal of subsidiaries, property and equipment and leases, net	9,603	(11,146)	(609,529)
Non-cash interest expense	1,018	1,591	6,761
Non-cash share-based compensation expense	7,114	8,776	10,172
Bad debt expense	43,733	21,972	34,370
Deferred income taxes	(55,856)	(530)	195,563
Unrealized foreign currency exchange loss (gain)	75,488	13,907	(7,033)
Non-cash loss from non-income tax contingencies	0	743	12,150
Other, net	283	6,086	1,106
Loss on derivative instruments	0	0	24,517
Loss on debt extinguishment	0	0	77,999
Payments for lease settlements	0	0	(46,804)
Changes in operating assets and liabilities:
Receivables	(51,738)	(27,524)	(15,986)
Prepaid expenses and other assets	2,621	4,800	(17,433)
Accounts payable and accrued expenses	(4,260)	(10,464)	(45,329)
Income tax receivable/payable, net	23,298	31,330	(101,126)
Deferred revenue and other liabilities	(13,717)	(18,959)	(98,277)
Net cash provided by (used in) operating activities	250,780	178,230	(156,082)
Cash flows from investing activities
Purchase of property and equipment	(56,437)	(52,756)	(50,444)
Expenditures for deferred costs	(20)	(312)	(5,843)
Receipts from sales of discontinued operations, net of cash sold, property and equipment	4,539	83,414	2,150,820
Settlement of derivatives related to sale of discontinued operations and net investment hedge	0	0	(50,341)
Net cash (used in) provided by investing activities	(51,918)	30,346	2,044,192
Cash flows from financing activities
Proceeds from issuance of long-term debt, net of original issue discount	153,772	496,253	46,493
Payments on long-term debt	(243,438)	(433,705)	(942,030)
Payments to purchase noncontrolling interests	(123)	0	0
Payments of special dividends, special cash distributions, and dividend equivalent rights	(112,478)	(253,188)	(1,374,855)
Proceeds from exercise of stock options	2,308	13,216	3,411
Payments to repurchase common stock	0	(282,151)	(380,505)
Withholding of shares to satisfy tax withholding for vested stock awards and exercised stock options	(623)	(1,994)	(2,769)
Payment of debt issuance costs	(1,306)	0	(32,980)
Net cash used in financing activities	(201,888)	(461,569)	(2,683,235)
Effects of exchange rate changes on Cash and cash equivalents and Restricted cash	6,641	1,202	(14,724)
Change in cash included in current assets held for sale	(502)	0	288,126
Net change in Cash and cash equivalents and Restricted cash	3,113	(251,791)	(521,723)
Cash and cash equivalents and Restricted cash at beginning of period	93,784	345,575	867,298
Cash and cash equivalents and Restricted cash at end of period	$ 96,897	$ 93,784	$ 345,575