CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net income	$ 1,211,762	$ 994,677	$ 1,021,294
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Depreciation and amortization	680,615	630,435	615,152
Impairment charges	0	0	124,892
Debt prepayment, refinancing and redemption charges	0	86,957	33,402
Stock-based compensation expense	102,209	91,458	67,850
Deferred income taxes	60,483	240,848	41,723
Equity investment loss, net	5,215	13,830	8,582
Loss on sales of business interests, net	0	24,248	23,022
Other non-cash charges, net	11,231	747	49,579
Changes in operating assets and liabilities, net of effect of acquisitions and divestitures:
Accounts receivable	(138,140)	(21,087)	(79,957)
Inventories	5,720	(12,349)	10,158
Other receivables and prepaid and other current assets	128,661	(79,277)	2,790
Other long-term assets	(26,387)	(6,123)	6,965
Accounts payable	(30,320)	37,200	(84,539)
Accrued compensation and benefits	(16,717)	(20,931)	(14,697)
Other current liabilities	(93,645)	105,637	181,940
Income taxes	36,921	(87,391)	95,645
Other long-term liabilities	(6,732)	(19,851)	(31,446)
Net Cash Provided by (Used in) Operating Activities, Total	1,930,876	1,979,028	2,072,355
Cash flows from investing activities:
Additions of property and equipment	(641,465)	(674,541)	(766,546)
Acquisitions	(187,050)	(182,013)	(100,861)
Proceeds from asset and business sales	61,464	50,139	3,877,392
Purchase of debt investments held-to-maturity	(30,849)	(150,701)	(101,462)
Purchase of other debt and equity investments	(2,987)	(3,757)	(5,458)
Proceeds from debt investments held-to-maturity	15,849	151,213	95,376
Proceeds from sale of other debt and equity investments	12,030	3,491	3,676
Purchase of equity method investments	(13,924)	(22,341)	(9,366)
Distributions from equity method investments	2,944	3,139	2,589
Payments to Acquire Other Investments	(745)	0	0
Net Cash Provided by (Used in) Investing Activities, Total	(784,733)	(825,371)	2,995,340
Cash flows from financing activities:
Borrowings	1,615,370	4,046,775	38,525,850
Payments on long-term debt	(861,115)	(4,110,304)	(40,520,722)
Deferred financing and debt redemption costs	(9,091)	(105,848)	(85,319)
Purchase of treasury stock	(1,538,626)	(1,458,442)	(2,383,816)
Distributions to noncontrolling interests	(244,033)	(253,118)	(233,123)
Net (payments) receipts related to stock purchases and awards	(60,001)	(975)
Net (payments) receipts related to stock purchases and awards			11,382
Contributions from noncontrolling interests	31,754	42,966	57,317
Proceeds from sales of additional noncontrolling interests	2,880	0	0
Purchases of noncontrolling interests	(20,104)	(7,831)	(68,019)
Net cash used in financing activities	(1,082,966)	(1,846,777)	(4,696,450)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(10,007)	(13,808)	(1,760)
Less: Net increase (decrease) in cash, cash equivalents and restricted cash	53,170	(706,928)	369,485
Cash, cash equivalents and restricted cash of continuing operations at beginning of the year	501,790	1,208,718	415,420
Cash, cash equivalents and restricted cash of continuing operations at end of the year	554,960	501,790	1,208,718
Discontinued Operations
Cash flows from financing activities:
Less: Net increase (decrease) in cash, cash equivalents and restricted cash	0	0	(423,813)
Continuing Operations
Cash flows from financing activities:
Less: Net increase (decrease) in cash, cash equivalents and restricted cash	$ 53,170	$ (706,928)	$ 793,298