Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net income	$ 438,647,000	$ 388,090,000	$ 243,386,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	349,449,000	271,294,000	251,296,000
Stock-based compensation	23,136,000	37,368,000	18,772,000
Amortization included in interest expense	6,158,000	5,877,000	5,909,000
Gain on disposition of assets	(15,721,000)	(2,115,000)	(9,026,000)
Loss on extinguishment of debt	0	21,604,000	25,235,000
Equity in earnings of investee	(4,315,000)	(3,384,000)	0
Deferred income tax expense (benefit)	3,212,000	1,574,000	(797,000)
Provision for doubtful accounts	9,013,000	4,527,000	12,729,000
(Increase) decrease in:
Receivables	(22,511,000)	(24,684,000)	1,287,000
Prepaid expenses	(906,000)	(5,493,000)	591,000
Other assets	2,711,000	5,030,000	7,629,000
Increase (decrease) in:
Trade accounts payable	1,176,000	1,308,000	841,000
Accrued expenses	(10,773,000)	9,553,000	10,052,000
Operating lease liabilities	7,198,000	3,819,000	24,549,000
Other liabilities	(4,862,000)	20,049,000	(22,580,000)
Cash flows provided by operating activities	781,612,000	734,417,000	569,873,000
Cash flows from investing activities:
Capital expenditures	(167,078,000)	(126,090,000)	(62,272,000)
Acquisitions	(479,766,000)	(312,257,000)	(45,584,000)
Payment for investments in equity securities	0	(30,000,000)	0
Decrease in notes receivable	12,124,000	107,000	0
Proceeds from disposition of assets and investments	15,649,000	6,480,000	10,968,000
Cash flows used in investing activities	(619,071,000)	(461,760,000)	(96,888,000)
Cash flows from financing activities:
Net proceeds from issuance of common stock	18,894,000	19,042,000	11,148,000
Cash used for purchase of treasury shares	(10,506,000)	(6,066,000)	(10,492,000)
Proceeds received from revolving credit facility	445,000,000	200,000,000	725,000,000
Payments on revolving credit facility	(575,000,000)	(25,000,000)	(875,000,000)
Principal payments on long-term debt	(365,000)	(378,000)	(9,112,000)
Borrowings on long-term debt	0	0	8,750,000
Principal payments on financing leases	(1,331,000)	(1,331,000)	0
Proceeds received from senior credit facility term loans	350,000,000	0	598,500,000
Payments on senior credit facility term loans	0	0	(978,097,000)
Proceeds received from accounts receivable securitization program	265,000,000	180,000,000	122,500,000
Payments on accounts receivable securitization program	(190,000,000)	(127,500,000)	(175,000,000)
Proceeds received from note offering	0	550,000,000	1,549,250,000
Redemption of senior notes and senior subordinated notes	0	(668,688,000)	(1,058,596,000)
Debt issuance costs	(1,583,000)	(8,823,000)	(32,950,000)
Distributions to non-controlling interest	(814,000)	(601,000)	(1,509,000)
Dividends/distributions	(508,614,000)	(405,174,000)	(252,309,000)
Cash flows used in financing activities	(209,319,000)	(294,519,000)	(377,917,000)
Effect of exchange rate changes in cash and cash equivalents	(391,000)	81,000	313,000
Net (decrease) increase in cash and cash equivalents	(47,169,000)	(21,781,000)	95,381,000
Cash and cash equivalents at beginning of period	99,788,000	121,569,000	26,188,000
Cash and cash equivalents at end of period	52,619,000	99,788,000	121,569,000
Supplemental disclosures of cash flow information:
Cash paid for interest	120,000,000	112,080,000	130,864,000
Cash paid for state and federal income taxes	$ 16,325,000	$ 8,388,000	$ 4,033,000