Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities:
Net income	$ 156,074	$ 118,957
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	341,622	287,378
Stock-based compensation	78,350	64,499
Amortization of intangible assets	53,395	48,491
Amortization of debt issuance costs and debt discounts and premiums	3,940	3,460
Provision for credit loss allowance	2,740	3,934
Loss on asset sales	1,720	1,199
Loss on debt extinguishment	13,058	6,441
Other items	7,743	4,484
Changes in operating assets and liabilities:
Accounts receivable	(17,620)	15,306
Income taxes, net	(10,274)	3,697
Other assets	(73,255)	(101,882)
Operating lease right-of-use assets	40,924	38,797
Operating lease liabilities	(36,563)	(35,193)
Accounts payable and accrued expenses	(76,362)	(25,681)
Other liabilities	(94,334)	82,943
Net cash provided by operating activities	391,158	516,830
Cash flows from investing activities:
Purchases of investments	(22,406)	(44,813)
Sales of investments	4,057	5,873
Business acquisitions, net of cash and restricted cash acquired	0	(478,287)
Purchases of real estate	(53,737)	(36,373)
Purchases of other property, plant and equipment	(563,598)	(400,941)
Net cash used in investing activities	(635,684)	(954,541)
Cash flows from financing activities:
Proceeds from employee equity awards	40,034	30,391
Payment of dividends	(263,039)	(233,479)
Proceeds from public offering of common stock, net of issuance costs	0	101,792
Proceeds from senior notes, net of debt discounts	1,290,752	0
Proceeds from mortgage and loans payable	0	250,000
Repayments of finance lease liabilities	(32,584)	(18,977)
Repayments of mortgage and loans payable	(20,186)	(18,501)
Repayment of senior notes	(590,650)	(343,711)
Debt extinguishment costs	(8,521)	(4,619)
Debt issuance costs	(3,152)	0
Net cash provided by (used in) financing activities	412,654	(237,104)
Effect of foreign currency exchange rates on cash, cash equivalents and restricted cash	(22,019)	(25,287)
Net increase in cash, cash equivalents and restricted cash	146,109	(700,102)
Cash, cash equivalents and restricted cash at beginning of period	1,625,695	1,886,613
Cash, cash equivalents and restricted cash at end of period	1,771,804	1,186,511
Total cash, cash equivalents, and restricted cash shown in the condensed consolidated statement of cash flows	$ 1,771,804	$ 1,186,511