Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 302,525	$ 257,458
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, accretion, and amortization	364,235	350,716
Gain on remeasurement of U.S. denominated intercompany loans	(85,268)	(45,928)
Non-cash compensation expense	44,456	48,648
Non-cash asset impairment and decommission costs	51,784	16,966
Deferred and non-cash income tax (benefit) provision	(258)	23,012
Other non-cash items reflected in the Statements of Operations	44,089	35,962
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable and costs and estimated earnings in excess of billings on uncompleted contracts, net	49,566	(8,078)
Prepaid expenses and other assets	(17,988)	(14,805)
Operating lease right-of-use assets, net	75,226	69,180
Accounts payable and accrued expenses	(24,504)	(3,064)
Accrued interest	1,066	1,752
Long-term lease liabilities	(68,967)	(62,990)
Other liabilities	62,139	(4,232)
Net cash provided by operating activities	798,101	664,597
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisitions	(39,737)	(353,578)
Capital expenditures	(112,583)	(90,971)
Purchase of investments	(627,310)	(281,624)
Proceeds from sale of investments	606,801	242,622
Other investing activities	(85,517)	(2,144)
Net cash used in investing activities	(258,346)	(485,695)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings under Revolving Credit Facility	140,000	330,000
Repayments under Revolving Credit Facility	(410,000)	(150,000)
Repurchase and retirement of common stock		(431,666)
Payment of dividends on common stock	(186,070)	(153,438)
Proceeds from employee stock purchase/stock option plans	19,308	20,240
Payments related to taxes on stock options and restricted stock units	(27,377)	(9,622)
Other financing activities	(10,749)	18,482
Net cash used in financing activities	(474,888)	(376,004)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	1,359	12,454
NET CHANGE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH	66,226	(184,648)
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH:
Beginning of period	189,283	435,626
End of period	255,509	250,978
Cash paid during the period for:
Interest	201,424	167,803
Income taxes	16,158	14,060
SUPPLEMENTAL CASH FLOW INFORMATION OF NON-CASH ACTIVITIES:
Right-of-use assets obtained in exchange for new operating lease liabilities	18,570	115,089
Operating lease modifications and reassessments	13,556	23,621
Right-of-use assets obtained in exchange for new finance lease liabilities	$ 1,031	$ 2,392