Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income	$ 376,587	$ 319,138
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	1,074,761	897,075
Stock-based compensation	267,395	215,591
Amortization of intangible assets	155,428	148,075
Amortization of debt issuance costs and debt discounts and premiums	12,760	11,788
Provision for credit loss allowance	7,604	6,466
Impairment charges	0	7,306
Gain on asset sales	(14,149)	(928)
Loss on debt extinguishment	115,339	101,803
Other items	22,377	14,764
Changes in operating assets and liabilities:
Accounts receivable	(111,313)	(38,104)
Income taxes, net	(44,200)	(20,193)
Other assets	(124,573)	(127,535)
Operating lease right-of-use assets	102,728	114,611
Operating lease liabilities	(137,751)	(107,391)
Accounts payable and accrued expenses	9,968	35,846
Other liabilities	(57,860)	45,366
Net cash provided by operating activities	1,655,101	1,623,678
Cash flows from investing activities:
Purchases of investments	(77,139)	(55,993)
Sales of investments	4,057	19,681
Business acquisitions, net of cash and restricted cash acquired	(158,498)	(478,248)
Real estate acquisitions	(194,849)	(124,462)
Purchases of other property, plant and equipment	(1,934,107)	(1,448,174)
Proceeds from sale of assets, net of cash transferred	174,494	0
Net cash used in investing activities	(2,186,042)	(2,087,196)
Cash flows from financing activities:
Proceeds from employee equity awards	77,628	62,118
Payment of dividends	(783,454)	(710,177)
Proceeds from public offering of common stock, net of issuance costs	99,599	1,981,375
Proceeds from senior notes, net of debt discounts	3,878,662	2,585,736
Proceeds from mortgage and loans payable	0	750,790
Repayments of finance lease liabilities	(130,129)	(74,446)
Repayments of mortgage and loans payable	(706,426)	(808,609)
Repayment of senior notes	(1,990,650)	(2,440,761)
Debt extinguishment costs	(99,185)	(82,404)
Debt issuance costs	(25,102)	(26,266)
Net cash provided by financing activities	320,943	1,237,356
Effect of foreign currency exchange rates on cash, cash equivalents and restricted cash	(24,139)	5,637
Net increase (decrease) in cash, cash equivalents and restricted cash	(234,137)	779,475
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	1,391,558	2,666,088
Cash and cash equivalents	1,379,100	2,645,045
Current portion of restricted cash included in other current assets	11,567	11,375
Non-current portion of restricted cash included in other assets	891	9,668
Total cash, cash equivalents, and restricted cash shown in the condensed consolidated statement of cash flows	$ 1,391,558	$ 2,666,088