CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income (loss)	$ 750,222	$ 107,210
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization (including impairments)	1,327,142	1,571,611
Loss (gain) on investments and sale of affiliate interests, net	(151,651)	(56,301)
Gain (Loss) on Price Risk Derivative Instruments Not Designated as Hedging Instruments	109,020	(26,203)
Loss on extinguishment of debt and write-off of deferred financing costs	51,712	250,489
Amortization of deferred financing costs and discounts (premiums) on indebtedness	69,176	69,296
Share-based compensation expense	80,277	96,974
Deferred income taxes	97,046	66,983
Decrease in right-of-use assets	32,694	34,778
Provision for doubtful accounts	46,448	50,383
Other	1,434	30,466
Change in assets and liabilities, net of effects of acquisitions and dispositions:
Accounts receivable, trade	(35,077)	4,419
Prepaid expenses and other assets	33,381	(5,976)
Amounts due from and due to affiliates	12,804	3,377
Accounts payable and accrued liabilities	(121,503)	(132,216)
Deferred revenue	(24,829)	(14,908)
Liabilities related to interest rate swap contracts	(100,817)	138,279
Net cash provided by operating activities	2,177,479	2,188,661
Cash flows from investing activities:
Capital expenditures	(845,067)	(729,377)
Payment for acquisitions, net of cash acquired	(340,444)	(150,115)
Other, net	(2,285)	4,827
Net cash used in investing activities	(1,187,796)	(874,665)
Cash flows from financing activities:
Proceeds from long-term debt	3,310,000	6,197,046
Repayment of long-term debt	(3,483,026)	(5,374,522)
Proceeds from collateralized indebtedness and related derivative contracts, net	185,105	0
Principal payments on finance lease obligations	(60,257)	(24,692)
Purchase of shares of Altice USA Class A common stock, pursuant to a share repurchase program	(804,928)	(1,814,689)
Other	2,698	(13,451)
Net cash used in financing activities	(1,035,513)	(1,030,308)
Net increase (decrease) in cash and cash equivalents	(45,830)	283,688
Effect of exchange rate changes on cash and cash equivalents	(140)	(1,523)
Net increase (decrease) in cash and cash equivalents	(45,970)	282,165
Cash, cash equivalents and restricted cash at beginning of year	278,686	702,160
Cash, cash equivalents and restricted cash at end of period	$ 232,716	$ 984,325