Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities:
Net income	$ 224,561	$ 252,307
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	706,184	586,609
Stock-based compensation	172,685	140,343
Amortization of intangible assets	105,074	97,853
Amortization of debt issuance costs and debt discounts and premiums	8,370	7,904
Provision for credit loss allowance	5,751	11,496
Loss on asset sales	1,265	857
Loss on debt extinguishment	115,518	8,309
Other items	17,545	10,654
Changes in operating assets and liabilities:
Accounts receivable	(57,329)	(14,233)
Income taxes, net	(65,935)	11,861
Other assets	(57,280)	(60,019)
Operating lease right-of-use assets	61,775	76,292
Operating lease liabilities	(100,328)	(72,091)
Accounts payable and accrued expenses	(57,201)	(25,564)
Other liabilities	(90,300)	58,938
Net cash provided by operating activities	990,355	1,091,516
Cash flows from investing activities:
Purchases of investments	(25,001)	(52,415)
Sales of investments	4,057	12,134
Business acquisitions, net of cash and restricted cash acquired	0	(478,248)
Purchases of real estate	(87,637)	(82,567)
Purchases of other property, plant and equipment	(1,255,830)	(882,889)
Net cash used in investing activities	(1,364,411)	(1,483,985)
Cash flows from financing activities:
Proceeds from employee equity awards	40,034	30,391
Payment of dividends	(521,092)	(469,487)
Proceeds from public offering of common stock, net of issuance costs	99,599	1,784,898
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	(98,877)	(42,681)
Repayments of mortgage and loans payable	(696,059)	(789,178)
Repayment of senior notes	(1,990,650)	(493,711)
Debt extinguishment costs	(99,185)	(4,619)
Debt issuance costs	(25,102)	(26,266)
Net cash provided by financing activities	587,330	3,325,873
Effect of foreign currency exchange rates on cash, cash equivalents and restricted cash	(17,054)	(12,876)
Net increase in cash, cash equivalents and restricted cash	196,220	2,920,528
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	1,821,915	4,807,141
Cash and cash equivalents	1,799,727	4,785,050
Current portion of restricted cash included in other current assets	12,994	13,293
Non-current portion of restricted cash included in other assets	9,194	8,798
Total cash, cash equivalents, and restricted cash shown in the condensed consolidated statement of cash flows	$ 1,821,915	$ 4,807,141