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	$ 497,415	$ 459,799	$ 237,624
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, accretion, and amortization	716,309	707,576	700,161
Non-cash asset impairment and decommission costs	154,947	42,807	31,790
Non-cash compensation expense	87,919	99,909	84,402
(Gain) loss on remeasurement of U.S. denominated intercompany loans	(81,222)	(20,295)	66,285
Loss from extinguishment of debt, net		437	36,718
Deferred income tax expense (benefit)	4,629	32,901	(8,510)
Non-cash interest expense	35,868	46,109	47,085
Amortization of deferred financing fees	20,273	19,835	19,589
Other non-cash items reflected in the Statements of Operations	43,785	9,742	9,881
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable and costs and estimated earnings in excess of billings on uncompleted contracts, net	44,386	(81,351)	(38,237)
Prepaid expenses and other assets	(35,498)	(29,746)	(28,243)
Operating lease right-of-use assets, net	141,114	135,473	114,321
Accounts payable and accrued expenses	(66,324)	25,118	(473)
Long-term lease liabilities	(138,699)	(129,471)	(113,292)
Other liabilities	119,491	(33,143)	30,795
Net cash provided by operating activities	1,544,393	1,285,700	1,189,896
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisitions	(129,961)	(1,176,092)	(1,257,704)
Capital expenditures	(236,698)	(214,443)	(133,694)
Purchase of investments	(1,339,026)	(881,781)	(1,731,111)
Proceeds from sale of investments	1,338,354	878,138	1,730,477
Loan to unconsolidated joint venture	(100,494)
Other investing activities	(421)	524	(31,228)
Net cash used in investing activities	(468,246)	(1,393,654)	(1,423,260)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings under Revolving Credit Facility	190,000	975,000	1,935,000
Repayments under Revolving Credit Facility	(730,000)	(605,000)	(1,965,000)
Proceeds from issuance of Senior Notes, net of fees			1,485,373
Repayment of Senior Notes			(1,870,909)
Proceeds from issuance of Tower Securities, net of fees		839,885	2,924,005
Repayment of Tower Securities		(640,000)	(1,335,000)
Repurchase and retirement of common stock	(100,010)	(431,666)	(582,578)
Payment of dividends on common stock	(369,960)	(306,766)	(253,580)
Proceeds from employee stock purchase/stock option plans	44,196	38,303	86,688
Payments related to taxes on stock options and restricted stock units	(27,481)	(9,958)	(71,904)
Other financing activities	(23,963)	4,728	(12,831)
Net cash (used in) provided by financing activities	(1,017,218)	(135,474)	339,264
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	2,734	(2,915)	(13,082)
NET CHANGE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH	61,663	(246,343)	92,818
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH:
Beginning of period	189,283	435,626	342,808
End of period	250,946	189,283	435,626
Cash paid during the period for:
Interest	396,593	347,659	360,515
Income taxes	25,581	32,320	25,568
SUPPLEMENTAL CASH FLOW INFORMATION OF NON-CASH ACTIVITIES:
Right-of-use assets obtained in exchange for new operating lease liabilities	55,409	171,203	33,315
Operating lease modifications and reassessments	(36,539)	48,946	36,817
Right-of-use assets obtained in exchange for new finance lease liabilities	$ 1,954	$ 3,860	$ 2,100