10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C.  20549

FORM 10-Q

(Mark One)

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2021

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission File Number	Registrant; State of Incorporation; Address and Telephone Number			IRS Employer Identification No.
001-38126				38-3980194
	Altice USA, Inc.
	Delaware
	1 Court Square West
	Long Island City,	New York	11101
	(516)	803-2300

Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.
	Yes	☒	No	☐

Indicate by check mark whether the Registrant has submitted electronically every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the Registrant was required to submit such files).
	Yes	☒	No	☐

Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of "large accelerated filer", "accelerated filer", "smaller reporting company", and "emerging growth company" in Rule 12b-2 of the Exchange Act. (Check one)
Large Accelerated Filer	☒	Accelerated filer	☐
Non-accelerated filer	☐	Smaller reporting company	☐
(Do not check if a smaller reporting company)		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes ☐ No ☒

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol	Name of each exchange on which registered
Class A Common Stock, par value $0.01 per share	ATUS	NYSE

Number of shares of common stock outstanding as of April 19, 2021 459,814,587 

ALTICE USA, INC. AND SUBSIDIARIES

FORM 10-Q

TABLE OF CONTENTS

		Page
PART I. FINANCIAL INFORMATION		2
Item 1. Financial Statements
ALTICE USA, INC. AND SUBSIDIARIES
Consolidated Financial Statements
	Consolidated Balance Sheets - March 31, 2021 (Unaudited) and December 31, 2020	4
	Consolidated Statements of Operations - Three months ended March 31, 2021 and 2020 (Unaudited)	6
	Consolidated Statements of Comprehensive Income (Loss) - Three months ended March 31, 2021 and 2020 (Unaudited)	7
	Consolidated Statements of Stockholders' Equity (Deficiency) - Three months ended March 31, 2021 and 2020 (Unaudited)	8
	Consolidated Statements of Cash Flows - Three months ended March 31, 2021 and 2020 (Unaudited)	10
	Combined Notes to Consolidated Financial Statements (Unaudited)	17
Supplemental Financial Statements Furnished:
CSC HOLDINGS, INC. AND SUBSIDIARIES
Consolidated Financial Statements
	Consolidated Balance Sheets - March 31, 2021 (Unaudited) and December 31, 2020	11
	Consolidated Statements of Operations - Three months ended March 31, 2021 and 2020 (Unaudited)	13
	Consolidated Statements of Comprehensive Income (Loss) - Three months ended March 31, 2021 and 2020 (Unaudited)	14
	Consolidated Statements of Member's Equity (Deficiency) - Three months ended March 31, 2021 and 2020 (Unaudited)	15
	Consolidated Statements of Cash Flows - Three months ended March 31, 2021 and 2020 Unaudited)	16
	Combined Notes to Consolidated Financial Statements (Unaudited)	17
Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations		34
Item 3. Quantitative and Qualitative Disclosures About Market Risk		48
Item 4. Controls and Procedures		50
PART II. OTHER INFORMATION		50
Item 1. Legal Proceedings		50
Item 1A. Risk Factors		50
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds		51
Item 6. Exhibits		51
SIGNATURES		52

1

Part I.    FINANCIAL INFORMATION

This Form 10-Q contains statements that constitute forward-looking information within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act and Section 21E of the Securities Act of 1934, as amended.  In this Form 10-Q there are statements concerning our future operating results and future financial performance.  Words such as "expects", "anticipates", "believes", "estimates", "may", "will", "should", "could", "potential", "continue", "intends", "plans" and similar words and terms used in the discussion of future operating results, future financial performance and future events identify forward-looking statements.  Investors are cautioned that such forward-looking statements are not guarantees of future performance, results or events and involve risks and uncertainties and that actual results or developments may differ materially from the forward-looking statements as a result of various factors. 

We operate in a highly competitive, consumer and technology driven and rapidly changing business that is affected by government regulation and economic, strategic, technological, political and social conditions. Various factors could adversely affect our operations, business or financial results in the future and cause our actual results to differ materially from those contained in the forward-looking statements. In addition, important factors that could cause our actual results to differ materially from those in our forward-looking statements include:

•competition for broadband, video and telephony customers from existing competitors (such as broadband communications companies, direct broadcast satellite ("DBS") providers, wireless data and telephony providers, and Internet-based providers) and new competitors entering our footprint;

•changes in consumer preferences, laws and regulations or technology that may cause us to change our operational strategies;

•increased difficulty negotiating programming agreements on favorable terms, if at all, resulting in increased costs to us and/or the loss of popular programming;

•increasing programming costs and delivery expenses related to our products and services;

•our ability to achieve anticipated customer and revenue growth, to successfully introduce new products and services and to implement our growth strategy;

•our ability to complete our capital investment plans on time and on budget, including our plan to build a fiber-to-the-home ("FTTH") network, and deploy Altice One, our home communications hub;

•our ability to develop mobile voice and data services and our ability to attract customers to these services;

•the effects of economic conditions or other factors which may negatively affect our customers’ demand for our current and future products and services;

•the effects of industry conditions;

•demand for digital and linear advertising products and services;

•our substantial indebtedness and debt service obligations;

•adverse changes in the credit market;

•changes as a result of any tax reforms that may affect our business;

•financial community and rating agency perceptions of our business, operations, financial condition and the industries in which we operate;

•the restrictions contained in our financing agreements;

•our ability to generate sufficient cash flow to meet our debt service obligations;

•fluctuations in interest rates which may cause our interest expense to vary from quarter to quarter;

•technical failures, equipment defects, physical or electronic break-ins to our services, computer viruses and similar problems;

2

•the disruption or failure of our network, information systems or technologies as a result of computer hacking, computer viruses, "cyber-attacks," misappropriation of data, outages, natural disasters, and other material events;

•the impact from the coronavirus ("COVID-19") pandemic;

•our ability to obtain necessary hardware, software, communications equipment and services and other items from our vendors at reasonable costs;

•our ability to effectively integrate acquisitions and to maximize expected operating efficiencies from our acquisitions or as a result of the transactions, if any;

•significant unanticipated increases in the use of bandwidth-intensive Internet-based services;

•the outcome of litigation, government investigations and other proceedings; and

•other risks and uncertainties inherent in our cable and other broadband communications businesses and our other businesses, including those listed under the caption "Risk Factors" and "Management's Discussion and Analysis of Financial Condition and Results of Operations" contained in the Company's Annual Report on Form 10-K filed with the Securities and Exchange Commission ("SEC") on February 11, 2021 (the "Annual Report").

These factors are not necessarily all of the important factors that could cause our actual results to differ materially from those expressed in any of our forward-looking statements. Other unknown or unpredictable factors could cause our actual results to differ materially from those expressed in any of our forward-looking statements.

Given these uncertainties, you are cautioned not to place undue reliance on such forward-looking statements. The forward-looking statements are made only as of the date of this Quarterly Report. Except to the extent required by law, we do not undertake, and specifically decline any obligation, to update any forward-looking statements or to publicly announce the results of any revisions to any of such statements to reflect future events or developments. Comparisons of results for current and any prior periods are not intended to express any future trends or indications of future performance, unless expressed as such, and should only be viewed as historical data.

You should read this Quarterly Report with the understanding that our actual future results, levels of activity, performance and events and circumstances may be materially different from what we expect. We qualify all forward-looking statements by these cautionary statements.

Certain numerical figures included in this Quarterly Report have been subject to rounding adjustments. Accordingly, such numerical figures shown as totals in various tables may not be arithmetic aggregations of the figures that precede them.

3

Item 1. Financial Statements

ALTICE USA, INC. AND SUBSIDIARIES CONSOLIDATED BALANCE SHEETS (In thousands)
	March 31, 2021 (Unaudited)		December 31, 2020
ASSETS
Current Assets:
Cash and cash equivalents	$	220,571	$	278,422
Restricted cash	264		264
Accounts receivable, trade (less allowance for doubtful accounts of $22,395 and $25,198)	376,155		442,581
Prepaid expenses and other current assets	221,819		200,252
Amounts due from affiliates	3,795		4,262
Derivative contracts	8,252		50,785
Total current assets	830,856		976,566
Property, plant and equipment, net of accumulated depreciation of $6,639,771 and $6,431,843	5,843,572		5,805,996
Right-of-use operating lease assets	234,358		241,342
Investment securities pledged as collateral	2,324,308		2,250,854
Derivative contracts	—		4,774
Other assets	92,137		87,429
Amortizable intangibles, net of accumulated amortization of $4,574,426 and $4,409,312	2,616,017		2,781,116
Indefinite-lived cable television franchises	13,068,017		13,068,017
Goodwill	8,160,566		8,160,566
Total assets	$	33,169,831	$	33,376,660

See accompanying notes to consolidated financial statements.

4

ALTICE USA, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS (continued)

(In thousands, except share and per share amounts)

LIABILITIES AND STOCKHOLDERS' DEFICIENCY	March 31, 2021 (Unaudited)		December 31, 2020
Current Liabilities:
Accounts payable	$	879,032	$	795,576
Interest payable	233,968		252,060
Accrued employee related costs	104,220		142,116
Amounts due to affiliates	12,698		8,538
Deferred revenue	153,032		109,798
Debt	1,258,055		1,245,713
Other current liabilities	550,263		544,302
Total current liabilities	3,191,268		3,098,103
Other liabilities	172,766		192,563
Deferred tax liability	5,037,625		5,006,167
Liabilities under derivative contracts	472,402		523,150
Right-of-use operating lease liability	248,758		257,424
Long-term debt, net of current maturities	25,431,481		25,476,629
Total liabilities	34,554,300		34,554,036
Commitments and contingencies (Note 16)
Redeemable equity	3,104		25,763
Stockholders' Deficiency:
Preferred stock, $0.01 par value, 100,000,000 shares authorized, no shares issued and outstanding	—		—
Class A common stock: $0.01 par value, 4,000,000,000 shares authorized, 282,245,265 shares issued and 276,179,014 shares outstanding as of March 31, 2021 and 297,203,087 shares issued and 290,573,672 shares outstanding as of December 31, 2020	2,822		2,972
Class B common stock: $0.01 par value, 1,000,000,000 shares authorized, 490,086,674 issued, 185,798,393 shares outstanding as of March 31, 2021 and 185,895,903 shares outstanding as of December 31, 2020	1,858		1,859
Class C common stock: $0.01 par value, 4,000,000,000 shares authorized, no shares issued and outstanding	—		—
Paid-in capital	—		—
Accumulated deficit	(1,185,610)		(985,641)
	(1,180,930)		(980,810)
Treasury stock, at cost (6,066,251 and 6,629,415 Class A common shares at March 31, 2021 and December 31, 2020, respectively)	(163,860)		(163,866)
Accumulated other comprehensive income	10,621		3,646
Total Altice USA stockholders' deficiency	(1,334,169)		(1,141,030)
Noncontrolling interests	(53,404)		(62,109)
Total stockholders' deficiency	(1,387,573)		(1,203,139)
Total liabilities and stockholders' deficiency	$	33,169,831	$	33,376,660

See accompanying notes to consolidated financial statements.

5

ALTICE USA, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except per share amounts)

(Unaudited)

	Three Months Ended March 31,
	2021		2020
Revenue (including revenue from affiliates of $3,406 and $3,488 respectively) (See Note 15)	$	2,478,821	$	2,450,256
Operating expenses:
Programming and other direct costs (including charges from affiliates of $2,228 and $2,189 respectively) (See Note 15)	851,864		864,514
Other operating expenses (including charges from affiliates of $3,179 and $3,941 respectively) (See Note 15)	580,433		582,309
Restructuring and other expense	3,209		7,294
Depreciation and amortization (including impairments)	434,857		547,569
	1,870,363		2,001,686
Operating income	608,458		448,570
Other income (expense):
Interest expense	(316,339)		(365,211)
Interest income	27		1,659
Gain (loss) on investments and sale of affiliate interests, net	73,453		(455,473)
Gain (loss) on derivative contracts, net	(53,565)		439,861
Gain (loss) on interest rate swap contracts, net	75,653		(54,832)
Other income, net	2,859		923
	(217,912)		(433,073)
Income before income taxes	390,546		15,497
Income tax expense	(112,007)		(17,035)
Net income (loss)	278,539		(1,538)
Net loss (income) attributable to noncontrolling interests	(4,403)		680
Net income (loss) attributable to Altice USA, Inc. stockholders	$	274,136	$	(858)
Income (loss) per share:
Basic income (loss) per share	$	0.58	$	—
Basic weighted average common shares (in thousands)	469,233		621,414
Diluted income (loss) per share	$	0.58	$	—
Diluted weighted average common shares (in thousands)	475,448		621,414
Cash dividends declared per common share	$	—	$	—

See accompanying notes to consolidated financial statements.

6

ALTICE USA, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(In thousands)

(Unaudited)

	Three Months Ended March 31,
	2021		2020
Net income (loss)	$	278,539	$	(1,538)
Other comprehensive income (loss):
Defined benefit pension plans:
Unrecognized actuarial gain (loss)	9,396		(13,469)
Applicable income taxes	(2,490)		3,598
Unrecognized gain (loss) arising during period, net of income taxes	6,906		(9,871)
Settlement loss (gain) included in other expense, net	(748)		502
Applicable income taxes	198		(134)
Settlement loss (gain) included in other expense, net, net of income taxes	(550)		368
Foreign currency translation adjustment	619		(424)
Applicable income taxes	—		—
Foreign currency translation adjustment, net	619		(424)
Other comprehensive income (loss)	6,975		(9,927)
Comprehensive income (loss)	285,514		(11,465)
Comprehensive loss (income) attributable to noncontrolling interests	(4,403)		680
Comprehensive income (loss) attributable to Altice USA, Inc. stockholders	$	281,111	$	(10,785)

See accompanying notes to consolidated financial statements.

7

ALTICE USA, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIENCY) (In thousands) (Unaudited)
	Class A Common Stock		Class B Common Stock		Paid-in Capital		Accumulated Deficit		Treasury Stock		Accumulated Other Comprehensive Income		Total Stockholders' Deficiency		Non-controlling Interests		Total Deficiency
Balance at January 1, 2021	$	2,972	$	1,859	$	—	$	(985,641)	$	(163,866)	$	3,646	$	(1,141,030)	$	(62,109)	$	(1,203,139)
Net income attributable to stockholders	—		—		—		274,136		—		—		274,136		—		274,136
Net income attributable to noncontrolling interests	—		—		—		—		—		—		—		4,403		4,403
Pension liability adjustments, net of income taxes	—		—		—		—		—		6,356		6,356		—		6,356
Foreign currency translation adjustment, net of income taxes	—		—		—		—		—		619		619		—		619
Share-based compensation expense (equity classified)	—		—		—		27,964		—		—		27,964		—		27,964
Redeemable equity vested	—		—		—		20,131		—		—		20,131		—		20,131
Change in redeemable equity	—		—		—		2,528		—		—		2,528		—		2,528
Class A shares acquired through share repurchase program and retired	(152)		—		—		(522,521)		—		—		(522,673)		—		(522,673)
Conversion of Class B to Class A shares	1		(1)		—		—		—		—		—		—		—
Issuance of common shares pursuant to employee long term incentive plan	1		—		—		2,037		6		—		2,044		—		2,044
Other	—		—		—		(4,244)		—		—		(4,244)		4,302		58
Balance at March 31, 2021	$	2,822	$	1,858	$	—	$	(1,185,610)	$	(163,860)	$	10,621	$	(1,334,169)	$	(53,404)	$	(1,387,573)

See accompanying notes to consolidated financial statements.

8

ALTICE USA, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIENCY) (In thousands) (Unaudited)
	Class A Common Stock		Class B Common Stock		Paid-in Capital		Retained Earnings		Treasury Stock		Accumulated Other Comprehensive Loss		Total Stockholders' Equity		Non-controlling Interest		Total Equity
Balance at January 1, 2020	$	4,572	$	1,862	$	2,039,918	$	390,766	$	(163,904)	$	(3,250)	$	2,269,964	$	9,298	$	2,279,262
Net loss attributable to stockholders	—		—		—		(858)		—		—		(858)		—		(858)
Net loss attributable to noncontrolling interests	—		—		—		—		—		—		—		(680)		(680)
Pension liability adjustments, net of income taxes	—		—		—		—		—		(9,503)		(9,503)		—		(9,503)
Foreign currency translation adjustment, net of income taxes	—		—		—		—		—		(424)		(424)		—		(424)
Share-based compensation expense	—		—		27,370		—		—		—		27,370		—		27,370
Redeemable equity vested	—		—		29,479		—		—		—		29,479		—		29,479
Change in redeemable equity	—		—		13,260		—		—		—		13,260		—		13,260
Class A shares acquired through share repurchase program and retired	(312)		—		(749,686)		—		—		—		(749,998)		—		(749,998)
Issuance of common shares pursuant to employee long term incentive plan	1		—		2,495		—		11		—		2,507		—		2,507
Balance at March 31, 2020	$	4,261	$	1,862	$	1,362,836	$	389,908	$	(163,893)	$	(13,177)	$	1,581,797	$	8,618	$	1,590,415

See accompanying notes to consolidated financial statements.

9

ALTICE USA, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

(Unaudited)

	Three Months Ended March 31,
	2021		2020
Cash flows from operating activities:
Net income (loss)	$	278,539	$	(1,538)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization (including impairments)	434,857		547,569
Loss (gain) on investments and sale of affiliate interests, net	(73,453)		455,473
Loss (gain) on derivative contracts, net	53,565		(439,861)
Amortization of deferred financing costs and discounts (premiums) on indebtedness	23,039		23,944
Share-based compensation expense	28,281		27,946
Deferred income taxes	29,165		30,225
Decrease in right-of-use assets	10,816		11,474
Provision for doubtful accounts	11,133		19,880
Other	1,074		1,849
Change in assets and liabilities, net of effects of acquisitions and dispositions:
Accounts receivable, trade	55,293		(4,458)
Prepaid expenses and other assets	(26,321)		(34,800)
Amounts due from and due to affiliates	4,627		3,894
Accounts payable and accrued liabilities	(29,696)		(165,728)
Deferred revenue	38,501		(5,153)
Liabilities related to interest rate swap contracts	(89,798)		122,849
Net cash provided by operating activities	749,622		593,565
Cash flows from investing activities:
Capital expenditures	(212,791)		(299,082)
Other, net	2,143		1,339
Net cash used in investing activities	(210,648)		(297,743)
Cash flows from financing activities:
Proceeds from long-term debt	150,000		—
Repayment of long-term debt	(225,863)		(18,183)
Proceeds from collateralized indebtedness and related derivative contracts, net	185,105		—
Repayment of collateralized indebtedness and related derivative contracts, net	(185,105)		—
Principal payments on finance lease obligations	(18,330)		(5,700)
Purchase of shares of Altice USA Class A common stock, pursuant to a share repurchase program	(503,645)		(726,005)
Other	393		(2,915)
Net cash used in financing activities	(597,445)		(752,803)
Net decrease in cash and cash equivalents	(58,471)		(456,981)
Effect of exchange rate changes on cash and cash equivalents	620		(424)
Net decrease in cash and cash equivalents	(57,851)		(457,405)
Cash, cash equivalents and restricted cash at beginning of year	278,686		702,160
Cash, cash equivalents and restricted cash at end of period	$	220,835	$	244,755

See accompanying notes to consolidated financial statements.

10

CSC HOLDINGS, LLC AND SUBSIDIARIES CONSOLIDATED BALANCE SHEETS (In thousands)
	March 31, 2021 (Unaudited)		December 31, 2020
ASSETS
Current Assets:
Cash and cash equivalents	$	220,214	$	277,938
Restricted cash	264		264
Accounts receivable, trade (less allowance for doubtful accounts of $22,395 and $25,198)	376,155		442,581
Prepaid expenses and other current assets	221,819		200,252
Amounts due from affiliates	3,795		4,262
Derivative contracts	8,252		50,785
Total current assets	830,499		976,082
Property, plant and equipment, net of accumulated depreciation of $6,639,771 and $6,431,843	5,843,572		5,805,996
Right-of-use operating lease assets	234,358		241,342
Investment securities pledged as collateral	2,324,308		2,250,854
Derivative contracts	—		4,774
Other assets	92,137		87,429
Amortizable intangibles, net of accumulated amortization of $4,574,426 and    $4,409,312	2,616,017		2,781,116
Indefinite-lived cable television franchises	13,068,017		13,068,017
Goodwill	8,160,566		8,160,566
Total assets	$	33,169,474	$	33,376,176

See accompanying notes to consolidated financial statements.

11

CSC HOLDINGS, LLC AND SUBSIDIARIES CONSOLIDATED BALANCE SHEETS (continued) (In thousands, except per membership unit amounts)
LIABILITIES AND MEMBER'S DEFICIENCY	March 31, 2021 (Unaudited)		December 31, 2020
Current Liabilities:
Accounts payable	$	879,032	$	795,576
Interest payable	233,968		252,060
Accrued employee related costs	104,220		142,116
Amounts due to affiliates	12,698		8,538
Deferred revenue	153,032		109,798
Debt	1,258,055		1,245,713
Other current liabilities	530,853		543,834
Total current liabilities	3,171,858		3,097,635
Other liabilities	172,766		192,563
Deferred tax liability	5,065,438		5,033,980
Liabilities under derivative contracts	472,402		523,150
Right-of-use operating lease liability	248,758		257,424
Long-term debt, net of current maturities	25,431,481		25,476,629
Total liabilities	34,562,703		34,581,381
Commitments and contingencies (Note 16)
Redeemable equity	3,104		25,763
Member's deficiency (100 membership units issued and outstanding)	(1,353,550)		(1,172,505)
Accumulated other comprehensive income	10,621		3,646
Total member's deficiency	(1,342,929)		(1,168,859)
Noncontrolling interest	(53,404)		(62,109)
Total deficiency	(1,396,333)		(1,230,968)
Total liabilities and member's deficiency	$	33,169,474	$	33,376,176

See accompanying notes to consolidated financial statements.

12

CSC HOLDINGS LLC AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands)

(Unaudited)

	Three Months Ended March 31,
	2021		2020
Revenue (including revenue from affiliates of $3,406 and $3,488 respectively) (See Note 15)	$	2,478,821	$	2,450,256
Operating expenses:
Programming and other direct costs (including charges from affiliates of $2,228 and $2,189 respectively) (See Note 15)	851,864		864,514
Other operating expenses (including charges from affiliates of $3,179 and $3,941 respectively) (See Note 15)	580,433		582,309
Restructuring and other expense	3,209		7,294
Depreciation and amortization (including impairments)	434,857		547,569
	1,870,363		2,001,686
Operating income	608,458		448,570
Other income (expense):
Interest expense	(316,339)		(365,211)
Interest income	27		1,659
Gain (loss) on investments and sale of affiliate interests, net	73,453		(455,819)
Gain (loss) on derivative contracts, net	(53,565)		439,861
Gain (loss) on interest rate swap contracts, net	75,653		(54,832)
Other income, net	2,859		923
	(217,912)		(433,419)
Income before income taxes	390,546		15,151
Income tax expense	(112,007)		(5,029)
Net income	278,539		10,122
Net loss (income) attributable to noncontrolling interests	(4,403)		680
Net income attributable to CSC Holdings, LLC sole member	$	274,136	$	10,802

See accompanying notes to consolidated financial statements.

13

CSC HOLDINGS, LLC AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(In thousands)

(Unaudited)

	Three Months Ended March 31,
	2021		2020
Net income	$	278,539	$	10,122
Other comprehensive income:
Defined benefit pension plans:
Unrecognized actuarial gain (loss)	9,396		(13,469)
Applicable income taxes	(2,490)		3,598
Unrecognized gain (loss) arising during period, net of income taxes	6,906		(9,871)
Settlement loss (gain) included in other expense, net	(748)		502
Applicable income taxes	198		(134)
Settlement loss (gain) included in other expense, net, net of income taxes	(550)		368
Foreign currency translation adjustment	619		(424)
Other comprehensive income (loss)	6,975		(9,927)
Comprehensive income	285,514		195
Comprehensive loss (income) attributable to noncontrolling interests	(4,403)		680
Comprehensive income attributable to CSC Holdings, LLC's sole member	$	281,111	$	875

See accompanying notes to consolidated financial statements.

14

CSC HOLDINGS, LLC AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CHANGES IN TOTAL MEMBER'S EQUITY (DEFICIENCY)

(In thousands)

(Unaudited)

	Member's Equity (Deficiency)		Accumulated Other Comprehensive Income (Loss)		Total Member's Equity (Deficiency)		Noncontrolling Interests		Total Equity (Deficiency)
Balance at January 1, 2021	$	(1,172,505)	$	3,646	$	(1,168,859)	$	(62,109)	$	(1,230,968)
Net income attributable to CSC Holdings' sole member	274,136		—		274,136		—		274,136
Net income attributable to noncontrolling interests	—		—		—		4,403		4,403
Pension liability adjustments, net of income taxes	—		6,356		6,356		—		6,356
Foreign currency translation adjustment, net of income taxes	—		619		619		—		619
Share-based compensation expense (equity classified)	27,964		—		27,964		—		27,964
Redeemable equity vested	20,131		—		20,131		—		20,131
Change in redeemable equity	2,528		—		2,528		—		2,528
Cash distributions to parent	(501,000)		—		(501,000)		—		(501,000)
Other	(4,804)		—		(4,804)		4,302		(502)
Balance at March 31, 2021	$	(1,353,550)	$	10,621	$	(1,342,929)	$	(53,404)	$	(1,396,333)

Balance at January 1, 2020	$	2,047,397	$	(3,250)	$	2,044,147	$	9,298	$	2,053,445
Net income attributable to CSC Holdings' sole member	10,802		—		10,802		—		10,802
Net loss attributable to noncontrolling interests	—		—		—		(680)		(680)
Pension liability adjustments, net of income taxes	—		(9,503)		(9,503)		—		(9,503)
Foreign currency translation adjustment, net of income taxes	—		(424)		(424)		—		(424)
Share-based compensation expense	27,370		—		27,370		—		27,370
Redeemable equity vested	29,479		—		29,479		—		29,479
Change in redeemable equity	13,260		—		13,260		—		13,260
Cash distributions to parent	(720,350)		—		(720,350)		—		(720,350)
Non-cash distributions to parent	(150,602)		—		(150,602)		—		(150,602)
Balance at March 31, 2020	$	1,257,356	$	(13,177)	$	1,244,179	$	8,618	$	1,252,797

See accompanying notes to consolidated financial statements.

15

CSC HOLDINGS LLC AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

(Unaudited)

	Three Months Ended March 31,
	2021		2020
Cash flows from operating activities:
Net income	$	278,539	$	10,122
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization (including impairments)	434,857		547,569
Loss (gain) on investments and sale of affiliate interests, net	(73,453)		455,819
Loss (gain) on derivative contracts, net	53,565		(439,861)
Amortization of deferred financing costs and discounts (premiums) on indebtedness	23,039		23,944
Share-based compensation expense	28,281		27,946
Deferred income taxes	29,165		172,835
Decrease in right-of-use assets	10,816		11,474
Provision for doubtful accounts	11,133		19,880
Other	1,074		1,849
Change in assets and liabilities, net of effects of acquisitions and dispositions:
Accounts receivable, trade	55,293		(4,458)
Prepaid expenses and other assets	(26,321)		(34,800)
Amounts due from and due to affiliates	3,882		(147,183)
Accounts payable and accrued liabilities	(29,611)		(165,723)
Deferred revenue	38,501		(5,153)
Liabilities related to interest rate swap contracts	(89,798)		122,849
Net cash provided by operating activities	748,962		597,109
Cash flows from investing activities:
Capital expenditures	(212,791)		(299,082)
Other, net	2,143		(2,669)
Net cash used in investing activities	(210,648)		(301,751)
Cash flows from financing activities:
Proceeds from long-term debt	150,000		—
Repayment of long-term debt	(225,863)		(18,183)
Proceeds from collateralized indebtedness and related derivative contracts, net	185,105		—
Repayment of collateralized indebtedness and related derivative contracts, net	(185,105)		—
Distributions to parent	(501,000)		(720,350)
Principal payments on finance lease obligations	(18,330)		(5,700)
Other	(1,465)		(4,947)
Net cash used in financing activities	(596,658)		(749,180)
Net decrease in cash and cash equivalents	(58,344)		(453,822)
Effect of exchange rate changes on cash and cash equivalents	620		(424)
Net decrease in cash and cash equivalents	(57,724)		(454,246)
Cash, cash equivalents and restricted cash at beginning of year	278,202		698,003
Cash, cash equivalents and restricted cash at end of period	$	220,478	$	243,757

See accompanying notes to consolidated financial statements.

16

ALTICE USA, INC. AND SUBSIDIARIES

COMBINED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Dollars in thousands, except share and per share amounts)

(Unaudited)

NOTE 1.    DESCRIPTION OF BUSINESS AND RELATED MATTERS

The Company and Related Matters

Altice USA, Inc. ("Altice USA") was incorporated in Delaware on September 14, 2015. Altice USA is majority-owned by Patrick Drahi through Next Alt. S.a.r.l. ("Next Alt").

Altice USA, through CSC Holdings, LLC (a wholly-owned subsidiary of Cablevision Systems Corporation) and its consolidated subsidiaries ("CSC Holdings," and collectively with Altice USA, the "Company"), principally provides broadband communications and video services in the United States. It markets its residential services primarily under two brands: Optimum, in the New York metropolitan area, and Suddenlink, principally in markets in the south-central United States. It operates enterprise services under the brands Lightpath and Altice Business. It delivers broadband, video, telephony services, proprietary content and advertising services to residential and business customers. In September 2019, the Company launched Altice Mobile, a full service voice and data offering, to consumers across its footprint. As these brands are managed on a consolidated basis, the Company classifies its operations in one segment.

The accompanying consolidated financial statements ("consolidated financial statements") of Altice USA include the accounts of Altice USA and its majority-owned subsidiaries and the accompanying consolidated financial statements of CSC Holdings include the accounts of CSC Holdings and its majority-owned subsidiaries. Altice USA is a holding company and has no business operations independent of its CSC Holdings subsidiary, whose operating results and financial position are consolidated into Altice USA. The consolidated balance sheets and statements of operations of Altice USA are essentially identical to the consolidated balance sheets and statements of operations of CSC Holdings, with the following exceptions: Altice USA has additional cash and deferred taxes on its consolidated balance sheet. In addition, CSC Holdings and its subsidiaries have certain intercompany receivables from and payables to Altice USA. Differences between Altice USA's results of operations and those of CSC Holdings for the three months ended March 31, 2020 primarily include gain on investments and sale of affiliate interests, net and income tax expense recorded by Altice USA.

The combined notes to the consolidated financial statements relate to the Company, which, except as noted, are essentially identical for Altice USA and CSC Holdings. All significant intercompany transactions and balances between Altice USA or CSC Holdings and their respective consolidated subsidiaries are eliminated in both sets of consolidated financial statements. Intercompany transactions between Altice USA and CSC Holdings are not eliminated in the CSC Holdings consolidated financial statements, but are eliminated in the Altice USA consolidated financial statements.

The financial statements of CSC Holdings are included herein as supplemental information as CSC Holdings is not an SEC registrant.

17

ALTICE USA, INC. AND SUBSIDIARIES

COMBINED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(Dollars in thousands, except share and per share amounts)

(Unaudited)

NOTE 2.    BASIS OF PRESENTATION

The accompanying unaudited consolidated financial statements of the Company have been prepared in accordance with U.S. generally accepted accounting principles ("GAAP") and with the instructions to Form 10-Q and Article 10 of Regulation S-X for interim financial information.  Accordingly, these financial statements do not include all the information and notes required for complete annual financial statements.

The interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company's Annual Report on Form 10-K for the year ended December 31, 2020.

The financial statements presented in this report are unaudited; however, in the opinion of management, such financial statements include all adjustments, consisting of normal recurring adjustments, necessary for a fair presentation of the results for the periods presented.

The results of operations for the interim periods are not necessarily indicative of the results that might be expected for future interim periods or for the full year ending December 31, 2021.

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period.  Actual results could differ from those estimates. See Note 12 for a discussion of fair value estimates.

Reclassifications

Certain reclassifications have been made to the 2020 financial statements to conform to the 2021 presentation.

NOTE 3.    COMMON STOCK

Share Repurchase Plan

In June 2018, the Board of Directors of Altice USA authorized a share repurchase program of $2,000,000, and on July 30, 2019, the Board of Directors authorized a new incremental three-year share repurchase program of $5,000,000 that took effect following the completion in August 2019 of the $2,000,000 repurchase program. In November 2020, the Board of Directors authorized an additional incremental $2,000,000 of share repurchases bringing the total amount of cumulative share repurchases authorized to $9,000,000. Under these repurchase programs, shares of Altice USA Class A common stock may be purchased from time to time in the open market and may include trading plans entered into with one or more brokerage firms in accordance with Rule 10b5-1 under the Securities Exchange Act of 1934. Size and timing of these purchases will be determined based on market conditions and other factors.  

For the three months ended March 31, 2021, Altice USA repurchased an aggregate of 15,179,697 shares for a total purchase price of approximately $522,673. From inception through March 31, 2021, Altice USA repurchased an aggregate of 277,093,742 shares for a total purchase price of approximately $7,526,443. These acquired shares were retired and the cost of these shares was recorded in stockholders' deficiency in the consolidated balance sheet of Altice USA.  As of March 31, 2021, Altice USA had approximately $1,473,557 of availability remaining under the incremental share repurchase program and had 461,977,407 combined Class A and Class B shares outstanding.

18

ALTICE USA, INC. AND SUBSIDIARIES

COMBINED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(Dollars in thousands, except share and per share amounts)

(Unaudited)

Common Stock of Altice USA

The following table provides details of Altice USA's shares of common stock outstanding:

	Shares of Common Stock Outstanding
	Class A Common Stock	Class B Common Stock
Balance at December 31, 2020	290,573,672	185,895,903
Conversion of Class B common stock to Class A common stock	97,510	(97,510)
Option exercises	104,365	—
Repurchase and retirement of Class A common shares in connection with the Company's share repurchase plan (discussed above)	(15,179,697)	—
Treasury shares reissued	583,164	—
Balance at March 31, 2021	276,179,014	185,798,393

NOTE 4.    REVENUE

The following table presents the composition of revenue:

	Three Months Ended March 31,
	2021		2020
Broadband	$	970,571	$	885,529
Video	905,834		947,061
Telephony	106,981		125,030
Residential revenue	1,983,386		1,957,620
Business services and wholesale revenue	367,216		364,530
News and advertising	105,070		105,540
Mobile	19,235		18,356
Other	3,914		4,210
Total revenue	$	2,478,821	$	2,450,256

The Company is assessed non-income related taxes by governmental authorities, including franchising authorities (generally under multi-year agreements), and collects such taxes from its customers.  In instances where the tax is being assessed directly on the Company, amounts paid to the governmental authorities are recorded as programming and other direct costs and amounts received from the customers are recorded as revenue. For the three months ended March 31, 2021, and 2020, the amount of franchise fees and certain other taxes and fees included as a component of revenue aggregated $66,056, and $64,910, respectively.

Customer Contract Costs

Deferred enterprise commission costs are included in other noncurrent assets in the consolidated balance sheets and totaled $18,864 and $19,959 as of March 31, 2021 and December 31, 2020, respectively.

A significant portion of our revenue is derived from residential and SMB customer contracts which are month-to month. As such, the amount of revenue related to unsatisfied performance obligations is not necessarily indicative of the future revenue to be recognized from our existing customer base. Contracts with enterprise customers generally range from three years to five years, and services may only be terminated in accordance with the contractual terms.

19

ALTICE USA, INC. AND SUBSIDIARIES

COMBINED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(Dollars in thousands, except share and per share amounts)

(Unaudited)

NOTE 5.    NET INCOME (LOSS) PER SHARE

Basic net income (loss) per common share attributable to Altice USA stockholders is computed by dividing net income (loss) attributable to Altice USA stockholders by the weighted average number of common shares outstanding during the period.  Diluted income per common share attributable to Altice USA stockholders reflects the dilutive effects of stock options and restricted stock. For such awards that are performance based, the diluted effect is reflected upon the achievement of the performance criteria. Diluted net loss per common share attributable to Altice USA stockholders excludes the effects of common stock equivalents as they are anti-dilutive.

The following table presents a reconciliation of weighted average shares used in the calculations of the basic and diluted net income per share attributable to Altice USA stockholders for the three months ended March 31, 2021 and 2020:

	Three Months Ended March 31,
	2021	2020
	(in thousands)
Basic weighted average shares outstanding	469,233	621,414
Effect of dilution:
Stock options	6,170	—
Restricted stock	45	—
Diluted weighted average shares outstanding	475,448	621,414
Weighted average shares excluded from diluted weighted average shares outstanding:
Anti-dilutive shares	495	22,525
Performance stock units and restricted stock whose performance metrics have not been achieved.	8,748	8,981

Net income (loss) per membership unit for CSC Holdings is not presented since CSC Holdings is a limited liability company and a wholly-owned subsidiary of Altice USA.

20

ALTICE USA, INC. AND SUBSIDIARIES

COMBINED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(Dollars in thousands, except share and per share amounts)

(Unaudited)

NOTE 6.    SUPPLEMENTAL CASH FLOW INFORMATION

The Company's non-cash investing and financing activities and other supplemental data were as follows:

	Three Months Ended March 31,
	2021		2020
Non-Cash Investing and Financing Activities:
Altice USA and CSC Holdings:
Property and equipment accrued but unpaid	$	266,995	$	219,889
Unsettled purchases of shares of Altice USA, Inc. Class A common stock, pursuant to a share repurchase program	18,942		23,993
Right-of-use assets acquired in exchange for finance lease obligations	38,348		27,674
CSC Holdings:
Distributions to parent	745		150,602
Supplemental Data:
Altice USA:
Cash interest paid	310,878		474,268
Income taxes paid, net	9,727		1,195
CSC Holdings:
Cash interest paid	310,878		474,268
Income taxes paid, net	9,727		1,195

NOTE 7.    RESTRUCTURING AND OTHER EXPENSE

The Company's restructuring and other expense is comprised of the following:

	Three Months Ended March 31,
	2021		2020
Contractual payments for terminated employees	$	1,856	$	3,121
Facility realignment costs	324		1,979
Impairment of right-of-use operating lease assets	405		1,705
Transaction costs related to certain transactions not related to the Company's operations	624		489
	$	3,209	$	7,294

As of March 31, 2021, the outstanding amounts due to terminated employees of $13,185 and the outstanding amounts related to facility realignment costs of $5,503 are reflected in other current and other long-term liabilities in the Company's consolidated balance sheet.

21

ALTICE USA, INC. AND SUBSIDIARIES

COMBINED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(Dollars in thousands, except share and per share amounts)

(Unaudited)

NOTE 8.    LEASES

The Company's operating leases are comprised primarily of facility leases and finance leases are comprised primarily of vehicle and equipment leases.

Balance sheet information related to our leases is presented below:

	Balance Sheet location	March 31, 2021		December 31, 2020
Operating leases:
Right-of-use lease assets	Right-of-use operating lease assets	$	234,358	$	241,342
Right-of-use lease liability, current	Other current liabilities	38,373		38,296
Right-of-use lease liability, long-term	Right-of-use operating lease liability	248,758		257,424
Finance leases:
Right-of-use lease assets	Property, plant and equipment	195,354		170,155
Right-of-use lease liability, current	Current portion of long-term debt	76,123		63,454
Right-of-use lease liability, long-term	Long-term debt	103,532		96,183

The following provides details of the Company's lease expense:

	Three Months Ended March 31,
	2021		2020
Operating lease expense, net	$	14,307	$	15,004
Finance lease expense:
Amortization of assets	11,574		4,460
Interest on lease liabilities	2,101		1,027
Total finance lease expense	13,675		5,487
	$	27,982	$	20,491

Other information related to leases is presented below:

	As of March 31,
	2021			2020
Right-of-use assets acquired in exchange for operating lease obligations	$	2,865		$	12,875
Cash Paid For Amounts Included In Measurement of Liabilities:
Operating cash flows related to finance leases	2,101			1,027
Operating cash flows related to operating leases	15,457			16,659
Weighted Average Remaining Lease Term:
Operating leases	8.8 years			9.3 years
Finance leases	2.4 years			3.1 years
Weighted Average Discount Rate:
Operating leases	5.60		%	5.90		%
Finance leases	5.16		%	5.50		%

22

ALTICE USA, INC. AND SUBSIDIARIES

COMBINED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(Dollars in thousands, except share and per share amounts)

(Unaudited)

The minimum future annual payments under non-cancellable leases during the next five years and thereafter, at rates now in force, are as follows:

	Finance leases		Operating leases
2021 (excluding the three months ended March 31, 2021)	$	62,394	$	30,274
2022	78,946		52,862
2023	43,839		45,139
2024	5,231		41,448
2025	292		33,458
Thereafter	—		167,700
Total future minimum lease payments, undiscounted	190,702		370,881
Less: Imputed interest	(11,047)		(83,750)
Present value of future minimum lease payments	$	179,655	$	287,131

NOTE 9.    INTANGIBLE ASSETS

The following table summarizes information relating to the Company's acquired amortizable intangible assets: 

	As of March 31, 2021						As of December 31, 2020
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Estimated Useful Lives
Customer relationships	$	6,052,598	$	(3,618,697)	$	2,433,901	$	6,052,598	$	(3,478,742)	$	2,573,856	3 to 18 years
Trade names	1,081,083		(917,820)		163,263		1,081,083		(894,189)		186,894		2 to 5 years
Other amortizable intangibles	56,762		(37,909)		18,853		56,747		(36,381)		20,366		1 to 15 years
	$	7,190,443	$	(4,574,426)	$	2,616,017	$	7,190,428	$	(4,409,312)	$	2,781,116

Amortization expense for the three months ended March 31, 2021 and 2020 aggregated $165,114 and $201,099, respectively.

The carrying amount of indefinite-lived cable television franchises as of March 31, 2021 and December 31, 2020 was $13,068,017. The carrying amount of goodwill as of March 31, 2021 and December 31, 2020 was $8,160,566.

23

ALTICE USA, INC. AND SUBSIDIARIES

COMBINED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(Dollars in thousands, except share and per share amounts)

(Unaudited)

NOTE 10.    DEBT

The following table provides details of the Company's outstanding debt:

		Interest Rate			March 31, 2021				December 31, 2020
Date Issued	Maturity Date				Principal Amount		Carrying Amount (a)		Principal Amount		Carrying Amount (a)
CSC Holdings Senior Notes:
November 15, 2011	November 15, 2021	6.750	%		$	1,000,000	$	992,691	$	1,000,000	$	989,917
September 27, 2012	September 15, 2022	5.875	%		649,024		621,617		649,024		617,333
May 23, 2014	June 1, 2024	5.250	%		750,000		700,419		750,000		697,041
October 18, 2018	April 1, 2028	7.500	%		4,118		4,112		4,118		4,112
November 27, 2018	April 1, 2028	7.500	%		1,045,882		1,044,462		1,045,882		1,044,424
July 10 and October 7, 2019	January 15, 2030	5.750	%		2,250,000		2,285,317		2,250,000		2,286,097
June 16, 2020	December 1, 2030	4.625	%		2,325,000		2,369,628		2,325,000		2,370,502
					8,024,024		8,018,246		8,024,024		8,009,426
CSC Holdings Senior Guaranteed Notes:
September 23, 2016	April 15, 2027	5.500	%		1,310,000		1,306,088		1,310,000		1,305,955
January 29, 2018	February 1, 2028	5.375	%		1,000,000		993,677		1,000,000		993,490
November 27, 2018	May 15, 2026	5.500	%		1,498,806		1,488,086		1,498,806		1,487,644
January 24, 2019	February 1, 2029	6.500	%		1,750,000		1,747,309		1,750,000		1,747,245
June 16, 2020	December 1, 2030	4.125	%		1,100,000		1,095,377		1,100,000		1,095,283
August 17, 2020	February 15, 2031	3.375	%		1,000,000		996,760		1,000,000		996,692
					7,658,806		7,627,297		7,658,806		7,626,309
CSC Holdings Restricted Group Credit Facility:
Revolving Credit Facility	(c)	2.358	%	(b)	575,000		566,720		625,000		616,027
Term Loan B	July 17, 2025	2.356	%		2,887,500		2,877,145		2,895,000		2,884,065
Incremental Term Loan B-3	January 15, 2026	2.356	%		1,249,500		1,245,315		1,252,688		1,248,293
Incremental Term Loan B-5	April 15, 2027	2.606	%		2,970,000		2,950,038		2,977,500		2,956,807
					7,682,000		7,639,218		7,750,188		7,705,192
Lightpath Senior Notes:
September 29, 2020	September 15, 2028	5.625	%		415,000		406,400		415,000		406,176
Lightpath Senior Secured Notes:
September 29, 2020	September 15, 2027	3.875	%		450,000		440,791		450,000		440,487
Lightpath Term Loan	November 30, 2027	3.750	%		598,500		581,879		600,000		582,808
Lightpath Revolving Credit Facility		(d)			—		—		—		—
					1,463,500		1,429,070		1,465,000		1,429,471
Collateralized indebtedness (see Note 11)					1,759,017		1,677,985		1,699,566		1,617,506
Finance lease obligations (see Note 8)					179,655		179,655		159,637		159,637
Notes payable and supply chain financing (e)					118,065		118,065		183,690		174,801
					26,885,067		26,689,536		26,940,911		26,722,342
Less: current portion of credit facility debt					(78,750)		(78,750)		(78,750)		(78,750)
Less: current portion of senior notes					(1,000,000)		(992,691)		(1,000,000)		(989,917)
Less: current portion of finance lease obligations					(76,123)		(76,123)		(63,454)		(63,454)
Less: current portion of notes payable and supply chain financing					(110,491)		(110,491)		(113,592)		(113,592)
					(1,265,364)		(1,258,055)		(1,255,796)		(1,245,713)
Long-term debt					$	25,619,703	$	25,431,481	$	25,685,115	$	25,476,629

24

ALTICE USA, INC. AND SUBSIDIARIES

COMBINED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(Dollars in thousands, except share and per share amounts)

(Unaudited)

(a)The carrying amount is net of the unamortized deferred financing costs and/or discounts/premiums and with respect to certain notes, a fair value adjustment resulting from the acquisitions of Cequel Corporation and Cablevision Systems Corporation.

(b)At March 31, 2021, $137,875 of the revolving credit facility was restricted for certain letters of credit issued on behalf of the Company and $1,762,125 of the facility was undrawn and available, subject to covenant limitations.

(c)The revolving credit facility of an aggregate principal amount of $2,475,000 matures in January 2024 and is priced at LIBOR plus 2.25%. In March 2021, a lender under the revolving credit facility extended the maturity date and reduced the interest rate on its aggregate principal amount of $200,000 which had an original maturity date of November 2021 and was priced at LIBOR plus 3.25%.

(d)There were no borrowings outstanding under the Lightpath Revolving Credit Facility which provides for commitments in an aggregate principal amount of $100,000. Borrowings bear interest at a rate per annum equal to the adjusted LIBOR rate or the alternate base rate, as applicable, plus the applicable margin, where the applicable margin is (i) with respect to any alternate base rate loan, 2.25% per annum and (ii) with respect to any eurodollar loan, 3.25% per annum.

(e)Includes $99,941 related to supply chain financing agreements that are required to be repaid within one year from the date of the respective agreement. The decrease in the principal amount at March 31, 2021 includes a $59,451 reclassification to collateralized indebtedness in connection with the maturity of a monetization contract related to the synthetic monetization closeout transaction in November 2019.

For financing purposes, the Company has two debt silos: CSC Holdings and Lightpath. The CSC Holdings silo is structured as a restricted group (the "Restricted Group") and an unrestricted group, which includes certain designated subsidiaries and investments (the "Unrestricted Group"). The Restricted Group is comprised of CSC Holdings and substantially all of its wholly-owned operating subsidiaries excluding Cablevision Lightpath LLC ("Lightpath"), a 50.01% owned subsidiary of the Company, which became an unrestricted subsidiary in September 2020. These Restricted Group subsidiaries are subject to the covenants and restrictions of the credit facility and indentures governing the notes issued by CSC Holdings. The Lightpath silo includes all of its operating subsidiaries which are subject to the covenants and restrictions of the credit facility and indentures governing the notes issued by Lightpath.

Both CSC Holdings and Lightpath's credit facilities agreements contains certain customary representations and warranties, affirmative covenants and events of default (including, among others, an event of default upon a change of control). If an event of default occurs, the lenders under the credit facilities will be entitled to take various actions, including the acceleration of amounts due under the credit facilities and all actions permitted to be taken by a secured creditor.

As of March 31, 2021, CSC Holdings and Cablevision Lightpath were in compliance with applicable financial covenants under their respective credit facilities and with applicable financial covenants under each respective indenture by which the senior guaranteed notes, senior secured notes and senior notes were issued.

Summary of Debt Maturities

The future maturities of debt payable by the Company under its various debt obligations outstanding as of March 31, 2021, including notes payable and collateralized indebtedness (see Note 11), but excluding finance lease obligations (see Note 8), are as follows:

2021	$	1,166,479
2022	734,667
2023	1,841,383
2024	1,403,889
2025	2,823,750
Thereafter	18,735,244

NOTE 11.    DERIVATIVE CONTRACTS AND COLLATERALIZED INDEBTEDNESS

Prepaid Forward Contracts

The Company has entered into various transactions to limit the exposure against equity price risk on its shares of Comcast Corporation ("Comcast") common stock.  The Company has monetized all of its stock holdings in Comcast

25

ALTICE USA, INC. AND SUBSIDIARIES

COMBINED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(Dollars in thousands, except share and per share amounts)

(Unaudited)

through the execution of prepaid forward contracts, collateralized by an equivalent amount of the respective underlying stock.  At maturity, the contracts provide for the option to deliver cash or shares of Comcast stock with a value determined by reference to the applicable stock price at maturity.  These contracts, at maturity, are expected to offset declines in the fair value of these securities below the hedge price per share while allowing the Company to retain upside appreciation from the hedge price per share to the relevant cap price.  

The Company received cash proceeds upon execution of the prepaid forward contracts discussed above which has been reflected as collateralized indebtedness in the accompanying consolidated balance sheets.  In addition, the Company separately accounts for the equity derivative component of the prepaid forward contracts.  These equity derivatives have not been designated as hedges for accounting purposes.  Therefore, the net fair values of the equity derivatives have been reflected in the accompanying consolidated balance sheets as an asset or liability and the net increases or decreases in the fair value of the equity derivative component of the prepaid forward contracts are included in gain (loss) on derivative contracts in the accompanying consolidated statements of operations.

All of the Company's monetization transactions are obligations of its wholly-owned subsidiaries that are not part of the Restricted Group; however, CSC Holdings has provided guarantees of the subsidiaries' ongoing contract payment expense obligations and potential payments that could be due as a result of an early termination event (as defined in the agreements).  If any one of these contracts was terminated prior to its scheduled maturity date, the Company would be obligated to repay the fair value of the collateralized indebtedness less the sum of the fair values of the underlying stock and equity collar, calculated at the termination date.  As of March 31, 2021, the Company did not have an early termination shortfall relating to any of these contracts.

The Company monitors the financial institutions that are counterparties to its equity derivative contracts.  All of the counterparties to such transactions carry investment grade credit ratings as of March 31, 2021.

In January 2021, the Company settled a collateralized debt and an equity derivative contract aggregating $185,102 upon maturity related to 5,337,750 shares of Comcast common stock held by us, with proceeds of $185,102 received in the current period pursuant to the synthetic monetization closeout transaction in November 2019. In connection with this transaction the Company recorded (i) a decrease in notes payable of $59,451 and (ii) an increase in collateralized debt of $59,451.

Interest Rate Swap Contracts

To manage interest rate risk, we have from time to time entered into interest rate swap contracts to adjust the proportion of total debt that is subject to variable and fixed interest rates. Such contracts effectively fix the borrowing rates on floating rate debt to provide an economic hedge against the risk of rising rates and/or effectively convert fixed rate borrowings to variable rates to permit the Company to realize lower interest expense in a declining interest rate environment. We monitor the financial institutions that are counterparties to our interest rate swap contracts and we only enter into interest rate swap contracts with financial institutions that are rated investment grade. All such contracts are carried at their fair market values on our consolidated balance sheet, with changes in fair value reflected in the consolidated statement of operations. As of March 31, 2021, the Company did not hold and has not issued derivative instruments for trading or speculative purposes.

26

ALTICE USA, INC. AND SUBSIDIARIES

COMBINED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(Dollars in thousands, except share and per share amounts)

(Unaudited)

The following represents the location of the assets and liabilities associated with the Company's derivative instruments within the consolidated balance sheets:

Derivatives Not Designated as Hedging Instruments	Balance Sheet Location	Fair Value at
		March 31, 2021		December 31, 2020
Asset Derivatives:
Interest rate swap contracts	Derivative contracts, short-term	$	8,252	$	5,132
Prepaid forward contracts	Derivative contracts, short-term	—		45,653
Interest rate swap contracts	Derivative contracts, long-term	—		4,774
		8,252		55,559
Liability Derivatives:
Prepaid forward contracts	Other current liabilities	—		(45,653)
Interest rate swap contracts	Other current liabilities	(12,861)		—
Prepaid forward contracts	Liabilities under derivative contracts, long-term	(301,418)		(247,853)
Interest rate swap contracts	Liabilities under derivative contracts, long-term	(170,984)		(275,297)
		$	(485,263)	$	(568,803)

The following table presents certain consolidated statement of operations data related to our derivative contracts and the underlying common stock:

	Three Months Ended March 31,
	2021		2020
Gain (loss) on derivative contracts related to change in the value of equity derivative contracts related to Comcast common stock	$	(53,565)	$	439,861
Change in the fair value of Comcast common stock included in gain (loss) on investments	73,453		(454,896)
Gain (loss) on interest rate swap contracts, net of a gain of $74,835 recorded in the 2020 period in connection with the early termination of the swap agreements discussed below	75,653		(54,832)

In March 2020, the Company terminated two swap agreements whereby the Company was paying a floating rate of interest and receiving a fixed rate of interest on an aggregate notional value of $1,500,000. These contracts were due to mature in May 2026. In connection with the early termination, the Company received cash of $74,835 which has been recorded in loss on interest swap contracts, net in our consolidated statement of operations and presented in operating activities in our consolidated statement of cash flows.

In addition, in March 2020, the Company executed amendments to two interest swap contracts that reduced the fixed rate of interest that the Company was paying on an aggregate notional value of $1,000,000 and extended the maturity date of the contracts to January 15, 2025 from January 15, 2022.

The following is a summary of interest rate swap contracts outstanding at March 31, 2021:

Trade Date	Maturity Date	Notional Amount		Company Pays	Company Receives
December 2018	January 2025	$	500,000	Fixed rate of 1.53%	Three-month LIBOR
December 2018	January 2022	500,000		Fixed rate of 2.733%	Three-month LIBOR
December 2018	January 2025	500,000		Fixed rate of 1.625%	Three-month LIBOR
December 2018	December 2026	750,000		Fixed rate of 2.9155%	Three-month LIBOR
December 2018	December 2026	750,000		Fixed rate of 2.9025%	Three-month LIBOR
March 2020	January 2025	500,000		Fixed rate of 1.458%	Three-month LIBOR
March 2020	January 2022	500,000		Three-month LIBOR	Fixed rate of 2.733%
April 2020	April 2021	2,850,000		Six-month LIBOR minus 0.5185%	One-month LIBOR

27

ALTICE USA, INC. AND SUBSIDIARIES

COMBINED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(Dollars in thousands, except share and per share amounts)

(Unaudited)

NOTE 12.    FAIR VALUE MEASUREMENT

The fair value hierarchy is based on inputs to valuation techniques that are used to measure fair value that are either observable or unobservable.  Observable inputs reflect assumptions market participants would use in pricing an asset or liability based on market data obtained from independent sources while unobservable inputs reflect a reporting entity's pricing based upon their own market assumptions.  The fair value hierarchy consists of the following three levels:

•Level I - Quoted prices for identical instruments in active markets.

•Level II - Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations whose inputs are observable or whose significant value drivers are observable.

•Level III - Instruments whose significant value drivers are unobservable.

The following table presents the Company's financial assets and financial liabilities that are measured at fair value on a recurring basis and their classification under the fair value hierarchy:

	Fair Value Hierarchy	March 31, 2021		December 31, 2020
Assets:
Money market funds	Level I	$	150,965	$	50,236
Investment securities pledged as collateral	Level I	2,324,308		2,250,854
Prepaid forward contracts	Level II	—		45,653
Interest rate swap contracts	Level II	8,252		9,906
Liabilities:
Prepaid forward contracts	Level II	(301,418)		293,506
Interest rate swap contracts	Level II	(183,845)		275,297

The Company's money market funds which are classified as cash equivalents and investment securities pledged as collateral are classified within Level I of the fair value hierarchy because they are valued using quoted market prices.

The Company's derivative contracts and liabilities under derivative contracts on the Company's consolidated balance sheets are valued using market-based inputs to valuation models.  These valuation models require a variety of inputs, including contractual terms, market prices, yield curves, and measures of volatility.  When appropriate, valuations are adjusted for various factors such as liquidity, bid/offer spreads and credit risk considerations.  Such adjustments are generally based on available market evidence. Since model inputs can generally be verified and do not involve significant management judgment, the Company has concluded that these instruments should be classified within Level II of the fair value hierarchy.

Fair Value of Financial Instruments

The following methods and assumptions were used to estimate fair value of each class of financial instruments for which it is practicable to estimate:

Credit Facility Debt, Collateralized Indebtedness, Senior Notes, Senior Guaranteed Notes, Senior Secured Notes, Notes Payable, and Supply Chain Financing

The fair values of each of the Company's debt instruments are based on quoted market prices for the same or similar issues or on the current rates offered to the Company for instruments of the same remaining maturities. The fair value of notes payable is based primarily on the present value of the remaining payments discounted at the borrowing cost. The carrying value of outstanding amounts related to supply chain financing agreements approximates the fair value due to their short-term maturity (less than one year).

The carrying values, estimated fair values, and classification under the fair value hierarchy of the Company's financial instruments, excluding those that are carried at fair value in the accompanying consolidated balance sheets, are summarized below:

28

ALTICE USA, INC. AND SUBSIDIARIES

COMBINED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(Dollars in thousands, except share and per share amounts)

(Unaudited)

		March 31, 2021				December 31, 2020
	Fair Value Hierarchy	Carrying Amount (a)		Estimated Fair Value		Carrying Amount (a)		Estimated Fair Value
Credit facility debt	Level II	$	8,221,097	$	8,280,500	$	8,288,000	$	8,350,188
Collateralized indebtedness	Level II	1,677,985		1,753,986		1,617,506		1,692,724
Senior guaranteed notes and senior secured notes	Level II	8,068,088		8,363,231		8,066,796		8,567,858
Senior notes	Level II	8,424,646		8,734,561		8,415,602		9,024,990
Notes payable and supply chain financing	Level II	118,065		118,183		174,801		175,251
		$	26,509,881	$	27,250,461	$	26,562,705	$	27,811,011

(a)Amounts are net of unamortized deferred financing costs and discounts/premiums.

The fair value estimates related to the Company's debt instruments presented above are made at a specific point in time, based on relevant market information and information about the financial instrument.  These estimates are subjective in nature and involve uncertainties and matters of significant judgments and therefore cannot be determined with precision.  Changes in assumptions could significantly affect the estimates.

NOTE 13.    INCOME TAXES

In general, the Company is required to use an estimated annual effective tax rate ("AETR") to measure the income tax expense or benefit recognized on a year to date basis in an interim period. In addition, certain items included in income tax expense as well as the tax impact of certain items included in pretax income must be treated as discrete items. The income tax expense or benefit associated with these discrete items is fully recognized in the interim period in which the items occur.

Altice USA

For the three months ended March 31, 2021, Altice USA recorded a tax expense of $112,007 on pre-tax income of $390,546, resulting in an effective tax rate that was higher than the U.S. statutory tax rate. The higher tax rate was due to the impact of certain non-deductible expenses and state tax expense.

For the three months ended March 31, 2020, Altice USA recorded a tax expense of $17,035 on pre-tax income of $15,497, resulting in an effective tax rate that was higher than the U.S. statutory tax rate. The higher tax rate was due to the impact of certain non-deductible expenses and certain state tax expense adjustments, partially offset by a benefit resulting from the Coronavirus Aid, Relief and Economic Security (“CARES Act”) enacted in March 2020.

CSC Holdings

For the three months ended March 31, 2021, CSC Holdings recorded a tax expense of $112,007 on pre-tax income of $390,546, resulting in an effective tax rate that was higher than the U.S. statutory tax rate. The higher tax rate was due to the impact of certain non-deductible expenses and state tax expense.

For the three months ended March 31, 2020, CSC Holdings recorded a tax expense of $5,029 on pre-tax income of $15,151, resulting in an effective tax rate that was higher than the U.S. statutory tax rate. The higher tax rate was due to the impact of certain non-deductible expenses and certain state tax expense adjustments, partially offset by a benefit resulting from the CARES Act.

29

ALTICE USA, INC. AND SUBSIDIARIES

COMBINED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(Dollars in thousands, except share and per share amounts)

(Unaudited)

NOTE 14.    SHARE-BASED COMPENSATION

The following table presents share-based compensation expense recognized by the Company and unrecognized compensation costs:

	Share-Based Compensation				Unrecognized Compensation Costs
	Three Months Ended March 31,
	2021		2020		As of March 31, 2021
Carry Unit Plan	$	759	$	3,120	$	44
Awards issued pursuant to LTIP:
Stock Option Awards	24,223		20,349		123,543
Performance Stock Units	2,982		3,901		60,675
Restricted Awards	317		576		549
	$	28,281	$	27,946	$	184,811

Carry Unit Plan

The following table summarizes activity relating to the Company's Carry Unit Plan:

	Number of Time Vesting Awards	Weighted Average Grant Date Fair Value
Balance, December 31, 2020	6,875,000	$	3.41
Vested	(5,375,000)	3.80
Balance, March 31, 2021	1,500,000	$	1.99

The weighted average fair value per unit was $2.10 and $3.89, as of March 31, 2021 and December 31, 2020, respectively.

Stock Option Awards

The following table summarizes activity related to stock options granted to Company employees:

	Shares Under Option	Weighted Average Exercise Price Per Share		Weighted Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value (a)
Balance at December 31, 2020	37,062,146	$	25.52	8.69	$	457,608
Granted	409,478	34.78
Exercised	(104,365)	17.79
Forfeited	(360,778)	26.10
Balance at March 31, 2021	37,006,481	25.64		8.46	256,796
Options exercisable at March 31, 2021	3,141,750	$	17.55	6.78	$	47,070

(a)The aggregate intrinsic value is calculated as the difference between the exercise price and the closing price of Altice USA's Class A common stock at the respective date.

The total unrecognized compensation cost related to stock options is expected to be recognized over a weighted-average period of approximately 2.56 years.

30

ALTICE USA, INC. AND SUBSIDIARIES

COMBINED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(Dollars in thousands, except share and per share amounts)

(Unaudited)

The following weighted-average assumptions were used to calculate the fair values of stock option awards granted during the three months ended March 31, 2021:

Risk-free interest rate	0.93%
Expected life (in years)	6.18
Dividend yield	—%
Volatility	32.92%
Grant date fair value	$10.77

Performance Stock Unit Awards

As of March 31, 2021, the Company had 7,330,235 PSUs outstanding. The PSUs have a weighted average grant date fair value of $10.65 per unit. The total unrecognized compensation cost related to outstanding PSUs is expected to be recognized over a weighted-average period of approximately 4.85 years.

NOTE 15.    AFFILIATE AND RELATED PARTY TRANSACTIONS

Affiliate and Related Party Transactions

Altice USA is controlled by Patrick Drahi who also controls Altice Europe N.V. ("Altice Europe") and its subsidiaries and other entities.

As the transactions discussed below were conducted between entities under common control by Mr. Drahi, amounts charged for certain services may not have represented amounts that might have been received or incurred if the transactions were based upon arm's length negotiations.

The following table summarizes the revenue and expenses related to services provided to or received from affiliates and related parties:

	Three Months Ended March 31,
	2021		2020
Revenue	$	3,406	$	3,488
Operating expenses:
Programming and other direct costs	$	(2,228)	$	(2,189)
Other operating expenses, net	(3,179)		(3,941)
Operating expenses, net	(5,407)		(6,130)
Net charges	$	(2,001)	$	(2,642)
Capital Expenditures	$	10,621	$	7,225

Revenue

The Company recognized revenue primarily from the sale of advertising to a subsidiary of Altice Europe and a foundation controlled by Patrick Drahi.

Programming and other direct costs

Programming and other direct costs include costs incurred by the Company for advertising services provided by a subsidiary of Altice Europe.

Other operating expenses, net

Other operating expenses primarily include charges for services provided by certain subsidiaries of Altice Europe and other related parties.

Capital Expenditures

Capital expenditures primarily include costs for equipment purchased and software development services provided by subsidiaries of Altice Europe.

31

ALTICE USA, INC. AND SUBSIDIARIES

COMBINED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(Dollars in thousands, except share and per share amounts)

(Unaudited)

Aggregate amounts that were due from and due to affiliates and related parties are summarized below:

	March 31,		December 31,
	2021		2020
Due from other affiliates and related parties	$	3,795	$	4,262
Due to:
Altice Europe	$	11,472	$	7,938
Other affiliates and related parties	1,226		600
	$	12,698	$	8,538

Amounts due from affiliates presented in the table above represent amounts paid by the Company on behalf of or for services provided to the respective related party. Amounts due to affiliates relate to the purchase of equipment and advertising services, as well as reimbursement for payments made on our behalf.

CSC Holdings

CSC Holdings made cash equity distribution payments to its parent aggregating $501,000, and $720,350 during the three months ended March 31, 2021 and 2020, respectively. CSC Holdings also recorded net non-cash equity contributions of $745 and $150,602 during the three months ended March 31, 2021 and 2020, respectively, which represent the non-cash settlement of intercompany balances with Altice USA. These balances primarily include amounts due to/due from Altice USA pursuant to a tax sharing agreement between the entities.

NOTE 16.    COMMITMENTS AND CONTINGENCIES

Legal Matters

In the latter half of 2018, eight named plaintiffs, each on behalf of a putative class of stockholders who purchased Company common stock in Altice USA's IPO pursuant to the Registration Statement and Prospectus, filed complaints (seven in New York State Supreme Court, one in United States District Court for the Eastern District of New York). The lawsuits name as defendants Altice USA, Altice Europe, and Altice USA's directors, among others, and assert that all defendants violated Sections 11 and 12 of the Securities Act of 1933 (the "Securities Act") and that the individual defendants violated Section 15 of the Securities Act as control persons. In a consolidated amended complaint filed in the lawsuit in the Eastern District of New York, plaintiff also asserts violations of Section 10(b) of the Securities Act of 1934 ("34 Act"), Rule 10b-5 promulgated thereunder, and Section 20 of the 34 Act against Altice USA, Altice Europe, and certain individual directors. The facts underlying each case are substantively similar, with plaintiffs alleging that the Registration Statement and Prospectus misrepresented or omitted material facts relating to the negative performance of Altice France and Altice Portugal, the disclosure of which in November 2017 negatively impacted the value of Altice USA’s stock. In June of 2019, plaintiffs in the New York State action filed a consolidated amended complaint, which the Company moved to dismiss in July of 2019. The Company moved to dismiss the complaint in the Eastern District of New York in October 2019. On June 26, 2020, the state Court granted the Company’s motion to dismiss. Plaintiffs in the New York State action filed a notice of appeal on July 21, 2020 and moved for leave to file an amended complaint on September 4, 2020. On September 23, 2020, the federal district court granted the Company’s motion to dismiss with leave for plaintiff to refile. On October 7, 2020, plaintiffs filed a second amended complaint in the Eastern District of New York. Following negotiations with the state and federal court plaintiffs, the parties executed a Memorandum of Understanding on February 12, 2021 to settle the litigation. That settlement remains subject to final documentation and court approval.

On June 23, 2020, a purported stockholder of the Company filed a complaint in the Court of Chancery of the State of Delaware, derivatively on behalf of the Company, against Patrick Drahi, Next Alt S.A.R.L., and those directors of the Company who are members of the Compensation Committee (collectively, the “Director Defendants”). The Company is also named as a nominal defendant in the complaint. The complaint alleges that the Director Defendants breached their fiduciary duties to the Company’s stockholders, and wasted corporate assets, by approving certain equity grants for Patrick Drahi. The complaint seeks rescission of the equity awards, monetary damages, and costs and disbursements for the plaintiff. On October 15, 2020, the Director Defendants answered the complaint and the Company filed a general denial of liability.

32

ALTICE USA, INC. AND SUBSIDIARIES

COMBINED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

(Dollars in thousands, except share and per share amounts)

(Unaudited)

The Company intends to vigorously defend these lawsuits. Although the outcome of the matter cannot be predicted and the impact of the final resolution of these matters on the Company’s results of operations in any particular subsequent reporting period is not known at this time, management does not believe that the ultimate resolution of these matters will have a material adverse effect on the operations or financial position of the Company or the ability of the Company to meet its financial obligations as they become due.

On November 6, 2018, Sprint Communications Company L.P ("Sprint") filed a complaint in the U.S. District Court for the District of Delaware alleging that the Company infringes Sprint’s patents purportedly by providing Voice over Internet Protocol ("VoIP") services. On December 3, 2018, Sprint filed a second complaint alleging that the Company infringes Sprint’s patents purportedly by providing certain VOD related services. The lawsuits are part of a pattern of litigation that was initiated as far back as 2005 by Sprint against numerous broadband and telecommunications providers, which has resulted in judgments and settlements of significant value for Sprint. The Company intends to vigorously defend the lawsuits. Although the outcome of the matter cannot be predicted and the impact of the final resolution of this matter on the Company’s results of operations in any particular subsequent reporting period is not known at this time, management does not believe that the ultimate resolution of the matter will have a material adverse effect on the operations or financial position of the Company or the ability of the Company to meet its financial obligations as they become due, but it could be material to the Company’s consolidated results of operations or cash flows for any one period.

The Company receives notices from third parties and, in some cases, is named as a defendant in certain lawsuits claiming infringement of various patents relating to various aspects of the Company's businesses. In certain of these cases other industry participants are also defendants. In certain of these cases the Company expects that any potential liability would be the responsibility of the Company's equipment vendors pursuant to applicable contractual indemnification provisions.

In the event that the Company is found to infringe on any patent rights, the Company may be subject to substantial damages and/or an injunction that could require the Company or its vendors to modify certain products and services the Company offers to its subscribers, as well as enter into royalty or license agreements with respect to the patents at issue. The Company believes that the claims are without merit, but is unable to predict the outcome of these matters or reasonably estimate a range of possible loss.

In addition to the matters discussed above, the Company is party to various lawsuits, disputes and investigations, some of which may involve claims for substantial damages, fines or penalties. Although the outcome of these other matters cannot be predicted and the impact of the final resolution of these other matters on the Company's results of operations in a particular subsequent reporting period is not known, management does not believe that the resolution of these other lawsuits will have a material adverse effect on the financial position of the Company or the ability of the Company to meet its financial obligations as they become due.

NOTE 17.    SUBSEQUENT EVENTS

In April 2021, the Company completed its acquisition of the cable assets of Morris Broadband, LLC in North Carolina for $310,000, subject to certain closing adjustments as set forth in the asset purchase agreement. The acquisition was funded with borrowings under the CSC Holdings Revolving Credit Facility.

33

Item 2.    Management's Discussion and Analysis of Financial Condition and Results of Operations

All dollar amounts, except per customer and per share data, included in the following discussion, are presented in thousands.

The preparation of our consolidated financial statements requires us to make estimates that affect the reported amounts of assets, liabilities, revenue and expenses. For a complete discussion of the accounting judgments and estimates that we have identified as critical in the preparation of our consolidated financial statements, please refer to our Management's Discussion and Analysis of Financial Condition and Results of Operations in our Annual Report on Form 10-K for the year ended December 31, 2020.

Overview

Our Business

We principally provide broadband communications and video services in the United States and market our services primarily under two brands: Optimum, in the New York metropolitan area, and Suddenlink, principally in markets in the south-central United States. We deliver broadband, video, telephony, and mobile services to more than five million residential and business customers. Our footprint extends across 21 states through a fiber-rich hybrid-fiber coaxial ("HFC") broadband network and a fiber-to-the-home ("FTTH") network with approximately 9.1 million homes passed as of March 31, 2021. Additionally, we offer news programming and content, and advertising services, as well as Altice Mobile, our full service mobile offering, to consumers across our footprint.

Key Factors Impacting Operating Results and Financial Condition

Our future performance is dependent, to a large extent, on the impact of direct competition, general economic conditions (including capital and credit market conditions), our ability to manage our businesses effectively, and our relative strength and leverage in the marketplace, both with suppliers and customers. For more information, see "Risk Factors" and "Business-Competition" included in our Annual Report on Form 10-K for the year ended December 31, 2020.

In March 2020, the United States declared a national emergency concerning the outbreak of the coronavirus ("COVID-19"). There have also been extraordinary and wide-ranging actions taken by federal, state and local governmental authorities to contain and combat the outbreak and spread of the virus. We have continued to provide our telecommunications services to our customers during this pandemic. We expect that our future results may be impacted, including if residential or business customers discontinue their service or are unable to pay for our products and services, or if advertising revenue declines. Additionally, in order to prioritize the demands of the business, we may continue to delay certain capital investments. Due to the uncertainty surrounding the magnitude and duration of business and economic impacts relating to COVID-19, including the effort to contain and combat the spread of the virus, and business impacts of government actions, including the impact of the recent New York legislation expected to be enacted that would require us, during the pendency of the pandemic emergency and a period thereafter, to maintain broadband, video and voice services for non-paying customers and offer deferred payment plans to customers experiencing financial difficulty, we currently cannot reasonably estimate the ultimate impact of COVID-19 on our business. See "Risk Factors - Our business, financial condition and results of operations may be adversely affected by the recent COVID-19 pandemic".

We derive revenue principally through monthly charges to residential customers of our broadband, video, and telephony services. We also derive revenue from digital video recorder ("DVR"), video-on-demand ("VOD"), pay-per-view, installation and home shopping commissions. Our residential broadband, video, and telephony services accounted for approximately 39%, 37%, and 4%, respectively, of our consolidated revenue for the three months ended March 31, 2021. We also derive revenue from the sale of a wide and growing variety of products and services to both large enterprise and SMB customers, including broadband, telephony, networking and video services. For the three months ended March 31, 2021, 15% of our consolidated revenue was derived from these business services. In addition, we derive revenues from the sale of advertising time available on the programming carried on our cable television systems, digital advertising and data analytics, and affiliation fees for news programming, which accounted for approximately 4% of our consolidated revenue for the three months ended March 31, 2021. Our mobile and other revenue for the three months ended March 31, 2021 accounted for approximately 1% of our consolidated revenue.

Revenue is impacted by rate increases, changes in the number of customers that subscribe to our services, including additional services sold to our existing customers, programming package changes by our video customers, speed tier changes by our broadband customers, and acquisitions and construction of cable systems that result in the addition of new customers.

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Our ability to increase the number of customers to our services is significantly related to our penetration rates.

We operate in a highly competitive consumer-driven industry and we compete against a variety of broadband, video and telephony providers and delivery systems, including broadband communications companies, wireless data and telephony providers, satellite-delivered video signals, Internet-delivered video content, and broadcast television signals available to residential and business customers in our service areas. Our competitors include AT&T, Inc. and its DirecTV subsidiary, Lumen Technologies, Inc., DISH Network Corporation, Frontier Communications Corporation and Verizon Communications Inc. Consumers' selection of an alternate source of service, whether due to economic constraints, technological advances or preference, negatively impacts the demand for our services. For more information on our competitive landscape, see "Risk Factors" and "Business-Competition" included in our Annual Report on Form 10-K for the year ended December 31, 2020.

Our programming costs, which are the most significant component of our operating expenses, have increased and are expected to continue to increase primarily as a result of contractual rate increases. See "Results of Operations" below for more information regarding the key factors impacting our revenues and operating expenses.

Historically, we have made substantial investments in our network and the development of new and innovative products and other service offerings for our customers as a way of differentiating ourselves from our competitors and we may continue to do so in the future. Our FTTH network build, which would enable us to deliver more than 10 Gbps broadband speeds to meet the growing data needs of residential and business customers, is underway. In addition, we launched Altice Mobile to consumers across our footprint in September 2019. We may incur greater than anticipated capital expenditures in connection with these initiatives, fail to realize anticipated benefits, experience delays and business disruptions or encounter other challenges to executing them as planned. See "Liquidity and Capital Resources- Capital Expenditures" for additional information regarding our capital expenditures.

Certain Transactions

The following transactions which occurred in 2020 had an impact in the periods covered by this Management's Discussion and Analysis of Financial Condition and Results of Operations:

In December 2020, the Company completed the sale of a 49.99% interest in its Lightpath fiber enterprise business (the "Lightpath Transaction") based on an implied enterprise value of $3.2 billion. The Company retained a 50.01% interest in the Lightpath business and maintained control of Cablevision Lightpath LLC ("Lightpath"), the entity holding the interest in the Lightpath business. Accordingly, the Company continues to consolidate the operating results of the Lightpath business.

On July 14, 2020, the Company completed its acquisition of certain cable assets in New Jersey and the operating results of the acquired business were consolidated as of the acquisition date.

Non-GAAP Financial Measures

We define Adjusted EBITDA, which is a non-GAAP financial measure, as net income (loss) excluding income taxes, non-operating income or expenses, loss on extinguishment of debt and write-off of deferred financing costs, gain (loss) on interest rate swap contracts, gain (loss) on derivative contracts, gain (loss) on investments and sale of affiliate interests, interest expense, interest income, depreciation and amortization (including impairments), share-based compensation expense or benefit, restructuring expense or credits, and transaction expenses.

We believe Adjusted EBITDA is an appropriate measure for evaluating the operating performance of the Company. Adjusted EBITDA and similar measures with similar titles are common performance measures used by investors, analysts and peers to compare performance in our industry. Internally, we use revenue and Adjusted EBITDA measures as important indicators of our business performance and evaluate management’s effectiveness with specific reference to these indicators. We believe Adjusted EBITDA provides management and investors a useful measure for period-to-period comparisons of our core business and operating results by excluding items that are not comparable across reporting periods or that do not otherwise relate to the Company’s ongoing operating results. Adjusted EBITDA should be viewed as a supplement to and not a substitute for operating income (loss), net income (loss), and other measures of performance presented in accordance with GAAP. Since Adjusted EBITDA is not a measure of performance calculated in accordance with GAAP, this measure may not be comparable to similar measures with similar titles used by other companies.

We also use Operating Free Cash Flow (defined as Adjusted EBITDA less cash capital expenditures), and Free Cash Flow (defined as net cash flows from operating activities less cash capital expenditures) as indicators of the

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Company’s financial performance. We believe these measures are two of several benchmarks used by investors, analysts and peers for comparison of performance in the Company’s industry, although they may not be directly comparable to similar measures reported by other companies.

Results of Operations - Altice USA (unaudited)

	Three Months Ended March 31,
	2021		2020
Revenue:
Broadband	$	970,571	$	885,529
Video	905,834		947,061
Telephony	106,981		125,030
Residential revenue	1,983,386		1,957,620
Business services and wholesale revenue	367,216		364,530
News and advertising	105,070		105,540
Mobile	19,235		18,356
Other	3,914		4,210
Total revenue	2,478,821		2,450,256
Operating expenses:
Programming and other direct costs	851,864		864,514
Other operating expenses	580,433		582,309
Restructuring and other expense	3,209		7,294
Depreciation and amortization (including impairments)	434,857		547,569
Operating income	608,458		448,570
Other income (expense):
Interest expense, net	(316,312)		(363,552)
Gain (loss) on investments and sale of affiliate interests, net	73,453		(455,473)
Gain (loss) on derivative contracts, net	(53,565)		439,861
Gain (loss) on interest rate swap contracts, net	75,653		(54,832)
Other income, net	2,859		923
Income before income taxes	390,546		15,497
Income tax expense	(112,007)		(17,035)
Net income (loss)	278,539		(1,538)
Net loss (income) attributable to noncontrolling interests	(4,403)		680
Net income (loss) attributable to Altice USA, Inc. stockholders	$	274,136	$	(858)

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The following is a reconciliation of net income (loss) to Adjusted EBITDA and Operating Free Cash Flow (unaudited):

	Three Months Ended March 31,
	2021		2020
Net income (loss)	$	278,539	$	(1,538)
Income tax expense	112,007		17,035
Other income, net	(2,859)		(923)
Loss (gain) on interest rate swap contracts, net	(75,653)		54,832
Loss (gain) on derivative contracts, net	53,565		(439,861)
Loss (gain) on investments and sales of affiliate interests, net	(73,453)		455,473
Interest expense, net	316,312		363,552
Depreciation and amortization (including impairments) (a)	434,857		547,569
Restructuring and other expense	3,209		7,294
Share-based compensation	28,281		27,946
Adjusted EBITDA	1,074,805		1,031,379
Capital Expenditures (cash)	212,791		299,082
Operating Free Cash Flow	$	862,014	$	732,297

The following is a reconciliation of net cash flow from operating activities to Free Cash Flow (unaudited):

	Three Months Ended March 31,
	2021		2020
Net cash flows from operating activities	$	749,622	$	593,565
Capital Expenditures (cash)	212,791		299,082
Free Cash Flow	$	536,831	$	294,483

The following table sets forth certain customer metrics, excluding Altice Mobile customers, for the Company (unaudited):

	March 31,			December 31,			March 31,
	2021			2020 (f)			2020
	(in thousands)
Homes passed (a)	9,067.6			9,034.1			8,834.8
Total customer relationships (b)(c)	5,023.2			5,024.6			4,950.1
Residential	4,647.4			4,648.4			4,568.4
SMB	375.8			376.1			381.7
Residential customers:
Broadband	4,370.8			4,359.2			4,237.4
Video	2,906.6			2,961.0			3,137.5
Telephony	2,161.2			2,214.0			2,359.8
Penetration of homes passed (d)	55.4		%	55.6		%	56.0		%
ARPU(e)(g)	$	142.24		$	140.09		$	143.39

(a)Represents the estimated number of single residence homes, apartments and condominium units passed by the broadband network in areas serviceable without further extending the transmission lines. In addition, it includes commercial establishments that have connected to our broadband network. Broadband services were not available to approximately 30 thousand homes passed and telephony services were not available to approximately 500 thousand homes passed.

(b)Represents number of households/businesses that receive at least one of the Company's fixed-line services.

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(c)Customers represent each customer account (set up and segregated by customer name and address), weighted equally and counted as one customer, regardless of size, revenue generated, or number of boxes, units, or outlets.  Free accounts are included in the customer counts along with all active accounts, but they are limited to a prescribed group.  Most of these accounts are also not entirely free, as they typically generate revenue through pay-per-view or other pay services and certain equipment fees.  Free status is not granted to regular customers as a promotion.  In counting bulk residential customers, such as an apartment building, we count each subscribing family unit within the building as one customer, but do not count the master account for the entire building as a customer. We count a bulk commercial customer, such as a hotel, as one customer, and do not count individual room units at that hotel.

(d)Represents the number of total customer relationships divided by homes passed.

(e)Calculated by dividing the average monthly revenue for the respective quarter (fourth quarter for annual periods) derived from the sale of broadband, video and telephony services to residential customers for the quarter by the average number of total residential customers for the same period.

(f)Customer metrics as of December 31, 2020 include certain customers impacted by storms in Louisiana that had not yet been disconnected for non-payment (see table below).

	December 31, 2020
	Storms
	(in thousands)
Total customer relationships	10.3
Residential	9.2
SMB	1.1
Residential customers:
Broadband	8.7
Video	4.8
Telephony	2.0

(g)ARPU for the December 31, 2020 period reflects a reduction of $1.26 due to credits that we anticipated to be issued to video customers as a result of credits the Company expected to receive from certain sports programming networks whereby the minimum number of events were not delivered pursuant to the contractual agreements with the networks and related franchise fees.

Altice USA- Comparison of Results for the Three Months Ended March 31, 2021 compared to the Three Months Ended March 31, 2020

Broadband Revenue

Broadband revenue for the three months ended March 31, 2021 and 2020 was $970,571 and $885,529, respectively. Broadband revenue is derived principally through monthly charges to residential subscribers of our broadband services. Revenue is impacted by rate increases, changes in the number of customers, including additional services sold to our existing subscribers, and changes in speed tiers. Additionally, revenue is impacted by changes in the standalone selling price of each performance obligation within our promotional bundled offers.

Broadband revenue increased $85,042 (10%) for the three months ended March 31, 2021 compared to the three months ended March 31, 2020. The increase was due primarily to higher average recurring broadband revenue per broadband customer, primarily driven by certain rate increases and service level changes, and an increase in broadband customers.

Video Revenue

Video revenue for the three months ended March 31, 2021 and 2020 was $905,834 and $947,061, respectively. Video revenue is derived principally through monthly charges to residential customers of our video services. Revenue is impacted by rate increases, changes in the number of customers, including additional services sold to our existing customers, and changes in programming packages. Additionally, revenue is impacted by changes in the standalone selling price of each performance obligation within our promotional bundled offers.

Video revenue decreased $41,227 (4%) for the three months ended March 31, 2021 compared to the three months ended March 31, 2020. The decrease was due primarily to a decline in video customers and lower pay-per-view and video-on-demand revenue, partially offset by higher average recurring video revenue per video customer, primarily driven by certain rate increases.

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Telephony Revenue

Telephony revenue for the three months ended March 31, 2021 and 2020 was $106,981 and $125,030, respectively. Telephony revenue is derived principally through monthly charges to residential customers of our telephony services. Revenue is impacted by changes in rates for services, changes in the number of customers, and additional services sold to our existing customers. Additionally, revenue is impacted by changes in the standalone selling price of each performance obligation within our promotional bundled offers.

Telephony revenue decreased $18,049 (14%) for the three months ended March 31, 2021 compared to the three months ended March 31, 2020. The decrease was due to a decline in telephony customers and lower average revenue per telephony customer.

Business Services and Wholesale Revenue

Business services and wholesale revenue for the three months ended March 31, 2021 and 2020 was $367,216 and $364,530, respectively. Business services and wholesale revenue is derived primarily from the sale of fiber-based telecommunications services to the business market, and the sale of broadband, video and telephony services to SMB customers.

Business services and wholesale revenue increased $2,686 (1%) for the three months ended March 31, 2021 compared to the three months ended March 31, 2020. The increase was primarily due to higher average recurring broadband revenue per SMB customer, primarily driven by certain rate increases and service level changes, partially offset by a decrease in SMB customers.

News and Advertising Revenue

News and advertising revenue for the three months ended March 31, 2021 and 2020 was $105,070 and $105,540, respectively. News and advertising revenue is primarily derived from the sale of (i) advertising inventory available on the programming carried on our cable television systems, (ii) advertising on over the top ("OTT") platforms, (iii) digital advertising, and (iv) data analytics. News and advertising revenue also includes affiliation fees for news programming.

News and advertising revenue decreased $470 for the three months ended March 31, 2021 compared to the three months ended March 31, 2020. The decrease was primarily due to lower political advertising revenue in 2021.

Mobile Revenue

Mobile revenue for the three months ended March 31, 2021 and 2020 was $19,235 and $18,356, respectively, and relates to sales of devices and mobile services. Mobile revenue increased $879 (5%) for the three months ended March 31, 2021 compared to the three months ended March 31, 2020. As of March 31, 2021, we had approximately 174,000 mobile lines compared to 110,000 mobile lines as of March 31, 2020.

Other Revenue

Other revenue for the three months ended March 31, 2021 and 2020 was $3,914 and $4,210, respectively. Other revenue includes revenue from other miscellaneous revenue streams.

Programming and Other Direct Costs

Programming and other direct costs for the three months ended March 31, 2021 and 2020 amounted to $851,864 and $864,514, respectively. Programming and other direct costs include cable programming costs, which are costs paid to programmers (net of amortization of any incentives received from programmers for carriage) for cable content (including costs of VOD and pay-per-view) and are generally paid on a per-customer basis. These costs typically rise due to increases in contractual rates and new channel launches and are also impacted by changes in the number of customers receiving certain programming services. These costs also include interconnection, call completion, circuit and transport fees paid to other telecommunication companies for the transport and termination of voice and data services, which typically vary based on rate changes and the level of usage by our customers. These costs also include franchise fees which are payable to the state governments and local municipalities where we operate and are primarily based on a percentage of certain categories of revenue derived from the provision of video service over our cable systems, which vary by state and municipality. These costs change in relation to changes in such categories of revenues or rate changes. Additionally, these costs include the costs of mobile devices sold to our customers and direct costs of providing mobile services.

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The decrease of $12,650 (1%) for the three months ended March 31, 2021, as compared to the three months ended March 31, 2020 was primarily attributable to the following:

Decrease in programming costs due to lower video customers, estimated credits expected to be received and lower pay-per-view and video-on-demand costs, partially offset by an increase in costs due to net contractual rate increases	$	(11,136)
Decrease in costs of mobile devices	(3,374)
Decrease in costs of digital media and linear advertising spots for resale	(3,458)
Increase in call completion and transfer costs primarily related to our mobile services, partially offset by a decrease in costs based on a lower level of activity related to our telephony service	3,451
Other net increases	1,867
	$	(12,650)

Programming costs

Programming costs aggregated $699,453 and $710,590 for the three months ended March 31, 2021 and 2020, respectively. Our programming costs in 2021 will continue to be impacted by changes in programming rates, which we expect to increase, and by changes in the number of video customers.

Other Operating Expenses

Other operating expenses for the three months ended March 31, 2021 and 2020 amounted to $580,433 and $582,309, respectively. Other operating expenses include staff costs and employee benefits including salaries of company employees and related taxes, benefits and other employee related expenses, as well as third-party labor costs. Other operating expenses also include network management and field service costs, which represent costs associated with the maintenance of our broadband network, including costs of certain customer connections and other costs associated with providing and maintaining services to our customers.

Customer installation and network repair and maintenance costs may fluctuate as a result of changes in the level of activities and the utilization of contractors as compared to employees. Also, customer installation costs fluctuate as the portion of our expenses that we are able to capitalize changes. Costs associated with the initial deployment of new customer premise equipment necessary to provide broadband, video and telephony services are capitalized (asset-based). The redeployment of customer premise equipment is expensed as incurred.

Other operating expenses also include costs related to the operation and maintenance of our call center facilities that handle customer inquiries and billing and collection activities and sales and marketing costs, which include advertising production and placement costs associated with acquiring and retaining customers. These costs vary period to period and certain of these costs, such as sales and marketing, may increase with intense competition. Additionally, other operating expenses include various other administrative costs, including legal fees, and product development costs.

The decrease in other operating expenses of $1,876, for the three months ended March 31, 2021 as compared to the three months ended March 31, 2020 was attributable to the following:

Net decrease in labor costs and benefits, partially offset by a decrease in capitalizable activity	$	(24,807)
Decrease in bad debt expense	(8,748)
Increase in repairs and maintenance costs	8,001
Increase in marketing costs	6,060
Increase in utility costs primarily due to winter storm Uri	5,707
Increase in legal costs	4,332
Increase in property taxes	2,649
Other net increases	4,930
	$	(1,876)

Restructuring and Other Expense

Restructuring and other expense for the three months ended March 31, 2021 amounted to $3,209, as compared to $7,294 for the three months ended March 31, 2020. These amounts primarily related to severance and other employee related costs resulting from headcount reductions, facility realignment costs and impairments of certain ROU assets. We may incur additional restructuring expenses in the future as we continue to analyze our organizational structure.

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Depreciation and Amortization

Depreciation and amortization for the three months ended March 31, 2021 and 2020 amounted to $434,857 and $547,569, respectively.

The decrease in depreciation and amortization of $112,712 (21%) for the three months ended March 31, 2021 as compared to the three months ended March 31, 2020 was due to certain fixed assets and intangible assets becoming fully depreciated or amortized, as well as the acceleration of amortization in 2020 of certain customer relationship intangible assets. This decrease was partially offset by an increase in depreciation as a result of asset additions.

Adjusted EBITDA

Adjusted EBITDA amounted to $1,074,805 and $1,031,379 for the three months ended March 31, 2021 and 2020, respectively.

Adjusted EBITDA is a non-GAAP measure that is defined as net income (loss) excluding income taxes, non-operating income or expenses, loss on extinguishment of debt and write-off of deferred financing costs, gain (loss) on interest rate swap contracts, gain (loss) on derivative contracts, gain (loss) on investments and sale of affiliate interests, interest expense, interest income, depreciation and amortization (including impairments), share-based compensation expense or benefit, restructuring expense or credits and transaction expenses. See reconciliation of net income (loss) to Adjusted EBITDA above.

The increase in Adjusted EBITDA for the three months ended March 31, 2021 as compared to the three months ended March 31, 2020 was due to the increase in revenue and a decrease in operating expenses (excluding depreciation and amortization, restructuring and other expense and share-based compensation), as discussed above.

Operating Free Cash Flow

Operating free cash flow was $862,014 and $732,297 for the three months ended March 31, 2021 and 2020, respectively. The increase in operating free cash flow for the three months ended 2021 as compared to the same period in 2020 is due to a decrease in capital expenditures an increase in Adjusted EBITDA.

Free Cash Flow

Free cash flow was $536,831 and $294,483 for the three months ended March 31, 2021 and 2020, respectively. The increase in free cash flow in 2021 as compared to 2020 is primarily due to an increase in cash flows from operating activities and decrease in capital expenditures.

Interest Expense

Interest expense, net was $316,312 and $363,552 for the three months ended March 31, 2021 and 2020, respectively. The decrease of $47,240 for the three months ended March 31, 2021 as compared to the three months ended March 31, 2020 was attributable to the following:

Decrease due to changes in average debt balances and interest rates on our indebtedness	$	(49,048)
Lower interest income	1,632
Other net increases, primarily amortization of deferred financing costs and original issue discounts	176
	$	(47,240)

Gain (Loss) on Investments and Sale of Affiliate Interests, net

Gain (loss) on investments, net for the three months ended March 31, 2021 and 2020, of $73,453 and $(455,473) consists primarily of the increase (decrease) in the fair value of Comcast common stock owned by the Company for the periods. The effects of these gains (losses) are partially offset by the losses (gains) on the related equity derivative contracts, net described below.

Gain (Loss) on Derivative Contracts, net

Gain (loss) on derivative contracts, net for the three months ended March 31, 2021 amounted to $(53,565) compared to $439,861 for the three months ended March 31, 2020, and includes realized and unrealized gains or losses due to the change in fair value of equity derivative contracts relating to the Comcast common stock owned by the Company. The effects of these gains (losses) are offset by losses (gains) on investment securities pledged as collateral, which are included in gain (loss) on investments, net discussed above.

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Gain (Loss) on Interest Rate Swap Contracts, net

Gain (loss) on interest rate swap contracts, net was $75,653 and $(54,832) for the three months ended March 31, 2021 and 2020, respectively. These amounts represent the increase or decrease in the fair value of interest rate swap contracts and for the 2020 period also includes the gain recognized in connection with the early termination of two interest rate swap contracts. These swap contracts are not designated as hedges for accounting purposes.

Other Income, net

Other income, net amounted to $2,859 and $923 for the three months ended March 31, 2021 and 2020, respectively. These amounts include dividends received on Comcast common stock owned by the Company and the non-service cost/benefit components of the Company's pension plan.

Income Tax Expense

For the three months ended March 31, 2021, Altice USA recorded a tax expense of $112,007 on pre-tax income of $390,546, resulting in an effective tax rate that was higher than the U.S. statutory tax rate. The higher tax rate was due to the impact of certain non-deductible expenses and state tax expense.

For the three months ended March 31, 2020, the Company recorded a tax expense of $17,035 on pre-tax income of $15,497, resulting in an effective tax rate that was higher than the U.S. statutory tax rate. The higher tax rate was due to the impact of certain non-deductible expenses and certain state tax expense adjustments, partially offset by a benefit resulting from the Coronavirus Aid, Relief and Economic Security (“CARES Act”) enacted in March 2020.

CSC HOLDINGS, LLC

The consolidated statements of operations of CSC Holdings are essentially identical to the consolidated statements of operations of Altice USA, except for the following:

		Three months ended March 31,
		2021		2020
		(in thousands)
Net income (loss) attributable to Altice USA shareholders		$	274,136	$	(858)
	Less: items included in Altice USA's consolidated statements of operations:
	Income tax expense	—		12,006
	Gain on sale of affiliate interest recorded by Altice USA	—		(346)
Net income attributable to CSC Holdings' sole member		$	274,136	$	10,802

Refer to Altice USA's Management's Discussion and Analysis of Financial Condition and Results of Operations herein.

The following is a reconciliation of CSC Holdings' net loss to Adjusted EBITDA:

	Three Months Ended March 31,
	2021		2020
Net income	$	278,539	$	10,122
Income tax expense (benefit)	112,007		5,029
Other income, net	(2,859)		(923)
Loss (gain) on interest rate swap contracts, net	(75,653)		54,832
Loss (gain) on derivative contracts, net	53,565		(439,861)
Loss (gain) on investments and sales of affiliate interests, net	(73,453)		455,819
Interest expense, net	316,312		363,552
Depreciation and amortization	434,857		547,569
Restructuring and other expense	3,209		7,294
Share-based compensation	28,281		27,946
Adjusted EBITDA	1,074,805		1,031,379
Capital expenditures (cash)	212,791		299,082
Operating Free Cash Flow	$	862,014	$	732,297

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The following is a reconciliation of CSC Holdings' net cash flow from operating activities to Free Cash Flow:

	Three Months Ended March 31,
	2021		2020
Net cash flows from operating activities	$	748,962	$	597,109
Capital expenditures (cash)	212,791		299,082
Free Cash Flow	$	536,171	$	298,027

LIQUIDITY AND CAPITAL RESOURCES

Altice USA has no operations independent of its subsidiaries. Funding for our subsidiaries has generally been provided by cash flow from their respective operations, cash on hand and borrowings under the revolving credit facility and the proceeds from the issuance of securities and borrowings under syndicated term loans in the capital markets.  Our decision as to the use of cash generated from operating activities, cash on hand, borrowings under the revolving credit facility or accessing the capital markets has been based upon an ongoing review of the funding needs of the business, the optimal allocation of cash resources, the timing of cash flow generation and the cost of borrowing under the revolving credit facility, debt securities and syndicated term loans. We target a year-end leverage ratio of 4.5x to 5.0x for our CSC Holdings debt silo. We calculate our consolidated net leverage ratio as net debt to L2QA EBITDA (Adjusted EBITDA for the two most recent consecutive fiscal quarters multiplied by 2.0).

We expect to utilize free cash flow and availability under the CSC Holdings revolving credit facility, as well as future refinancing transactions, to further extend the maturities of, or reduce the principal on, our debt obligations. The timing and terms of any refinancing transactions will be subject to, among other factors, market conditions. Additionally, we may, from time to time, depending on market conditions and other factors, use cash on hand and the proceeds from other borrowings to repay the outstanding debt securities through open market purchases, privately negotiated purchases, tender offers, or redemptions.

We believe existing cash balances, operating cash flows and availability under the CSC Holdings revolving credit facility will provide adequate funds to support our current operating plan, make planned capital expenditures and fulfill our debt service requirements for the next twelve months. However, our ability to fund our operations, make planned capital expenditures, make scheduled payments on our indebtedness and repay our indebtedness depends on our future operating performance and cash flows and our ability to access the capital markets, which, in turn, are subject to prevailing economic conditions and to financial, business and other factors, some of which are beyond our control. Competition, market disruptions or a deterioration in economic conditions could lead to lower demand for our products, as well as lower levels of advertising, and increased incidence of customers' inability to pay for the services we provide.  These events would adversely impact our results of operations, cash flows and financial position.  Although we currently believe amounts available under the CSC Holdings revolving credit facility will be available when, and if, needed, we can provide no assurance that access to such funds will not be impacted by adverse conditions in the financial markets or other conditions.  The obligations of the financial institutions under the revolving credit facility are several and not joint and, as a result, a funding default by one or more institutions does not need to be made up by the others.

In the longer term, we may not be able to generate sufficient cash from operations to fund anticipated capital expenditures, meet all existing future contractual payment obligations and repay our debt at maturity.  As a result, we could be dependent upon our continued access to the capital and credit markets to issue additional debt or equity or refinance existing debt obligations.  We intend to raise significant amounts of funding over the next several years to fund capital expenditures, repay existing obligations and meet other obligations, and the failure to do so successfully could adversely affect our business.  If we are unable to do so, we will need to take other actions including deferring capital expenditures, selling assets, seeking strategic investments from third parties or reducing or eliminating stock repurchases and discretionary uses of cash.

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Debt Outstanding

The following tables summarize the carrying value of our outstanding debt, net of unamortized deferred financing costs, discounts and premiums (excluding accrued interest), as well as interest expense for the three months ended March 31, 2021.

	CSC Holdings Restricted Group		Lightpath		Other Unrestricted Entities		Altice USA/CSC Holdings
Debt outstanding:
Credit facility debt	$	7,639,218	$	581,879	$	—	$	8,221,097
Senior guaranteed notes	7,627,297		—		—		7,627,297
Senior secured notes	—		440,791		—		440,791
Senior notes	8,018,246		406,400		—		8,424,646
Subtotal	23,284,761		1,429,070		—		24,713,831
Finance lease obligations	179,655		—		—		179,655
Notes payable and supply chain financing	118,065		—		—		118,065
Subtotal	23,582,481		1,429,070		—		25,011,551
Collateralized indebtedness relating to stock monetizations (a)	—		—		1,677,985		1,677,985
Total debt	$	23,582,481	$	1,429,070	$	1,677,985	$	26,689,536
Interest expense:
Credit facility debt, senior notes, finance leases, notes payable and supply chain financing	$	280,672	$	17,066	$	—	$	297,738
Collateralized indebtedness relating to stock monetizations (a)	—		—		18,601		18,601
Total interest expense	$	280,672	$	17,066	$	18,601	$	316,339

(a)This indebtedness is collateralized by shares of Comcast common stock. We intend to settle this debt by (i) delivering shares of Comcast common stock and the related equity contracts, or (ii) delivering cash from the net proceeds from new monetization contracts.

The following table provides details of our outstanding credit facility debt, net of unamortized discounts and deferred financing costs as of March 31, 2021:

	Maturity Date	Interest Rate	Principal		Carrying Value
CSC Holdings
Revolving Credit Facility (a)	(b)	2.36%	$	575,000	$	566,720
Term Loan B	July 17, 2025	2.36%	2,887,500		2,877,145
Incremental Term Loan B-3	January 15, 2026	2.36%	1,249,500		1,245,315
Incremental Term Loan B-5	April 15, 2027	2.61%	2,970,000		2,950,038
			7,682,000		7,639,218
Lightpath
Revolving Credit Facility (c)	November 30, 2025	—%	—		—
Term Loan	November 30, 2027	3.75%	598,500		581,879
			$	8,280,500	$	8,221,097

(a)At March 31, 2021, $137,875 of the revolving credit facility was restricted for certain letters of credit issued on behalf of the Company and $1,762,125 of the facility was undrawn and available, subject to covenant limitations.

(b)The revolving credit facility of an aggregate principal amount of $2,475,000 matures in January 2024 and is priced at LIBOR plus 2.25%. In March 2021, a lender under the revolving credit facility extended the maturity date and reduced the interest rate on its aggregate principal amount of $200,000 which had an original maturity date of November 2021 and was priced at LIBOR plus 3.25%.

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(c)There were no borrowings outstanding under the Lightpath Revolving Credit Facility which provides for commitments in an aggregate principal amount of $100,000. Borrowings bear interest at a rate per annum equal to the adjusted LIBOR rate or the alternate base rate, as applicable, plus the applicable margin, where the applicable margin is (i) with respect to any alternate base rate loan, 2.25% per annum and (ii) with respect to any eurodollar loan, 3.25% per annum.

Payment Obligations Related to Debt

As of March 31, 2021, total amounts payable by us in connection with our outstanding obligations, including related interest, as well as notes payable and supply chain financing, and the value deliverable at maturity under monetization contracts, but excluding finance lease obligations (see Note 8 to our consolidated financial statements) are as follows:

	CSC Holdings Restricted Group		Lightpath		Other Unrestricted Entities (a)		Altice USA/ CSC Holdings
2021	$	1,986,441	$	41,868	$	25,345	$	2,053,654
2022	1,770,900		68,973		33,886		1,873,759
2023	1,083,511		69,358		1,776,378		2,929,247
2024	2,365,392		68,038		—		2,433,430
2025	3,733,695		68,596		—		3,802,291
Thereafter	19,868,658		1,570,335		—		21,438,993
Total	$	30,808,597	$	1,887,168	$	1,835,609	$	34,531,374

(a)Includes $1,776,378 related to the Company's collateralized indebtedness (including related interest).  This indebtedness is collateralized by shares of Comcast common stock. We intend to settle this debt by (i) delivering shares of Comcast common stock and the related equity contracts or (ii) delivering cash from the net proceeds on new monetization contracts.

CSC Holdings Restricted Group

For financing purposes, the Company is structured as a restricted group (the "Restricted Group") and an unrestricted group, which includes certain designated subsidiaries and investments (the "Unrestricted Group"). The CSC Holdings Restricted Group is comprised of CSC Holdings and substantially all of its wholly-owned operating subsidiaries, excluding Lightpath which became an unrestricted subsidiary in September 2020. These subsidiaries are subject to the covenants and restrictions of the credit facility and indentures governing the notes issued by CSC Holdings.

Sources of cash for the Restricted Group include primarily cash flow from the operations of the businesses in the Restricted Group, borrowings under its credit facility and issuance of securities in the capital markets, contributions from its parent, and, from time to time, distributions or loans from its subsidiaries.  The Restricted Group's principal uses of cash include:  capital spending, in particular, the capital requirements associated with the upgrade of its digital broadband, video and telephony services, including costs to build our FTTH network; debt service; distributions made to its parent to fund share repurchases; other corporate expenses and changes in working capital; and investments that it may fund from time to time.

CSC Holdings Credit Facility

In October 2015, a wholly-owned subsidiary of Altice USA, which merged with and into CSC Holdings on June 21, 2016, entered into a senior secured credit facility, which currently provides U.S. dollar term loans currently in an aggregate principal amount of $3,000,000 ($2,887,500 outstanding at March 31, 2021) (the "CSC Term Loan Facility", and the term loans extended under the CSC Term Loan Facility, the "CSC Term Loans") and U.S. dollar revolving loan commitments in an aggregate principal amount of $2,475,000 ($575,000 outstanding at March 31, 2021) (the "CSC Revolving Credit Facility" and, together with the CSC Term Loan Facility, the "CSC Credit Facilities"), which are governed by a credit facilities agreement entered into by, inter alios, CSC Holdings certain lenders party thereto and JPMorgan Chase Bank, N.A. as administrative agent and security agent (as amended, restated, supplemented or otherwise modified on June 20, 2016, June 21, 2016, July 21, 2016, September 9, 2016, December 9, 2016, March 15, 2017, January 12, 2018, October 15, 2018, January 24, 2019, February 7, 2019, May 14, 2019, and October 3, 2019, respectively, and as further amended, restated, supplemented or otherwise modified from time to time, the "CSC Credit Facilities Agreement").

In October 2018, CSC Holdings entered into a $1,275,000 ($1,249,500 outstanding at March 31, 2021) incremental term loan facility (the “Incremental Term Loan B-3”) and in October 2019, CSC Holdings entered into a $3,000,000

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($2,970,000 outstanding at March 31, 2021) incremental term loan facility ("Incremental Term Loan B-5") under its existing credit facilities agreement.

See Note 10 to our consolidated financial statements for further information regarding the CSC Credit Facilities Agreement.

CSC Holdings Senior Guaranteed Notes and Senior Notes

See Note 10 of our consolidated financial statements for further details of the Company’s outstanding senior guaranteed notes and senior notes.

Lightpath Debt

Lightpath was financed independently outside of the CSC Holdings restricted group. In September 2020, Lightpath issued $450,000 in aggregate principal amount of senior secured notes and $415,000 in aggregate principal amount of senior notes. Also, in November 2020, Lightpath entered into a credit agreement which provides a term loan in an aggregate principal amount of $600,000 and revolving loan commitments in an aggregate principal amount of $100,000. As of March 31, 2021, there were no borrowings outstanding under the Lightpath revolving credit facility. See Note 10 to our consolidated financial statements for further information regarding the Lightpath credit agreement and the Lightpath senior and senior secured notes.

Capital Expenditures

The following table presents the Company's capital expenditures:

	Three Months Ended March 31,
	2021		2020
Customer premise equipment	$	41,836	$	63,335
Network infrastructure	116,387		140,063
Support and other	29,973		60,626
Business Services	24,595		35,058
Capital purchases (cash basis)	$	212,791	$	299,082
Right-of-use assets acquired in exchange for finance lease obligations	$	38,348	$	27,674
Change in accrued and unpaid purchases and other	60,334		46,212
Capital purchases (accrual basis)	$	311,473	$	372,968

Customer premise equipment includes expenditures for set-top boxes, cable modems, routers and other equipment that is placed in a customer's home, as well as installation costs for placing assets into service. Network infrastructure includes: (i) scalable infrastructure, such as headend equipment, (ii) line extensions, such as FTTH and fiber/coaxial cable, amplifiers, electronic equipment, make-ready and design engineering, and (iii) upgrade and rebuild, including costs to modify or replace existing fiber/coaxial cable networks, including enhancements. Support and other capital expenditures includes costs associated with the replacement or enhancement of non-network assets, such as software systems, vehicles, facilities and office equipment. Business services capital expenditures include primarily equipment, installation, support, and other costs related to our fiber based telecommunications business serving primarily enterprise customers.

Other Transactions

In April 2021, the Company completed its acquisition of the cable assets of Morris Broadband, LLC in North Carolina for $310,000, subject to certain closing adjustments as set forth in the asset purchase agreement. The acquisition was funded with borrowings under the CSC Holdings Revolving Credit Facility.

Cash Flow Discussion

Altice USA

Operating Activities

Net cash provided by operating activities amounted to $749,622 for the three months ended March 31, 2021 compared to $593,565 for the three months ended March 31, 2020. 

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The 2021 cash provided by operating activities resulted from $797,016 of income before depreciation and amortization and non-cash items, a decrease in accounts receivable of $55,293, an increase in deferred revenue of $38,501, and a net increase in amounts due to affiliates of $4,627, partially offset by a decrease in accounts payable and accrued liabilities of $29,696, a decrease in liabilities related to interest rate swap contracts of $89,798, and an increase in prepaid expenses and other assets of $26,321.

The 2020 cash provided by operating activities resulted from $676,961 of income before depreciation and amortization and non-cash items, increases in liabilities related to interest rate swap contracts of $122,849, and a net increase in amounts due to affiliates of $3,894, partially offset by a decrease in accounts payable and accrued expenses of $165,728, an increase in prepaid expenses and other assets of $34,800, an increase in accounts receivable of $4,458, and a decrease in deferred revenue of $5,153.

Investing Activities

Net cash used in investing activities for the three months ended March 31, 2021 was $210,648 compared to $297,743 for the three months ended March 31, 2020. The 2021 investing activities consisted primarily of capital expenditures of $212,791. The 2020 investing activities consisted primarily of capital expenditures of $299,082.

Financing Activities

Net cash used in financing activities amounted to $597,445 for the three months ended March 31, 2021, compared to $752,803 for the three months ended March 31, 2020. In 2021, the Company's financing activities consisted of the repurchase of common stock pursuant to a share repurchase program of $503,645, repayment of long-term debt of $225,863, repayment of collateralized indebtedness and related derivative contracts, net of $185,105, principal payments on finance lease obligations of $18,330, partially offset by proceeds from collateralized indebtedness, net of $185,105, proceeds from long-term debt of $150,000, and other net cash receipts of $393.

In 2020, the Company's financing activities consisted of the repurchase of common stock pursuant to a share repurchase program of $726,005, the repayment of long-term debt of $18,183, principal payments on finance lease obligations of $5,700, and other net cash payments of $2,915.

CSC Holdings

Operating Activities

Net cash provided by operating activities amounted to $748,962 for the three months ended March 31, 2021 compared to $597,109 for the three months ended March 31, 2020. The 2021 cash provided by operating activities resulted from $797,016 of income before depreciation and amortization and non-cash items, a decrease in accounts receivable of $55,293, an increase deferred revenue of $38,501, and a net increase in amounts due to affiliates of $3,882, partially offset by a decrease in accounts payable and accrued expenses of $29,611, an increase in prepaid expenses and other assets of $26,321, and a decrease in liabilities related to interest rate swap contracts of $89,798.

The 2020 cash provided by operating activities resulted from $831,577 of income before depreciation and amortization and non-cash items, increases in liabilities related to interest rate swap contracts of $122,849, partially offset by a decrease in accounts payable and accrued liabilities of $165,723, a net decrease in amounts due to affiliates of $147,183, an increase in prepaid expenses and other assets of $34,800, an increase in accounts receivable of $4,458, and a decrease in deferred revenue of $5,153.

Investing Activities

Net cash used in investing activities for the three months ended March 31, 2021 was $210,648 compared to $301,751 for the three months ended March 31, 2020. The 2021 investing activities consisted primarily of capital expenditures of $212,791. The 2020 investing activities consisted primarily of capital expenditures of $299,082.

Financing Activities

Net cash used in financing activities amounted to $596,658 for the three months ended March 31, 2021 compared to $749,180 for the three months ended March 31, 2020. In 2021, the Company's financing activities consisted of distributions to its parent of $501,000, repayment of long-term debt of $225,863, repayment of collateralized indebtedness and related derivative contracts, net of $185,105, principal payments on finance lease obligations of $18,330, and other net cash payments of $1,465, partially offset by proceeds from collateralized indebtedness, net of $185,105 and proceeds from long term debt of $150,000.

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In 2020, the Company's financing activities consisted of distributions to its parent of $720,350, the repayment of long-term debt of $18,183, principal payments on finance lease obligations of $5,700, and other net cash payments of $4,947.

Commitments and Contingencies

As of March 31, 2021, the Company's commitments and contingencies not reflected in the Company's balance sheet decreased to approximately $6,307,000 as compared to approximately $6,780,000 at December 31, 2020. This decrease relates primarily to payments made pursuant to programming commitments, partially offset by renewed multi-year programming agreements entered into during the three months ended March 31, 2021.

Share Repurchase Program

In June 2018, the Board of Directors of Altice USA authorized a share repurchase program of $2,000,000, and on July 30, 2019, the Board of Directors authorized a new incremental three-year share repurchase program of $5,000,000 that took effect following the completion in August 2019 of the $2,000,000 repurchase program. In November 2020, the Board of Directors authorized an additional incremental $2,000,000 of share repurchases bringing the total amount of cumulative share repurchases authorized to $9,000,000. Under these repurchase programs, shares of Altice USA Class A common stock may be purchased from time to time in the open market and may include trading plans entered into with one or more brokerage firms in accordance with Rule 10b5-1 under the Securities Exchange Act of 1934. Size and timing of these purchases will be determined based on market conditions and other factors.  

For the three months ended March 31, 2021, Altice USA repurchased an aggregate of 15,179,697 shares for a total purchase price of approximately $522,673. From inception through March 31, 2021, Altice USA repurchased an aggregate of 277,093,742 shares for a total purchase price of approximately $7,526,443. These acquired shares were retired and the cost of these shares was recorded in stockholders' deficiency in the consolidated balance sheet of Altice USA.  As of March 31, 2021, Altice USA had approximately $1,473,557 of availability remaining under the incremental share repurchase program and had 461,977,407 combined Class A and Class B shares outstanding.

Item 3.     Quantitative and Qualitative Disclosures About Market Risk

All dollar amounts, except per share data, included in the following discussion are presented in thousands.

Equity Price Risk

We are exposed to market risks from changes in certain equity security prices.  Our exposure to changes in equity security prices stems primarily from the shares of Comcast common stock we hold.  We have entered into equity derivative contracts consisting of a collateralized loan and an equity collar to hedge our equity price risk and to monetize the value of these securities.  These contracts, at maturity, are expected to offset declines in the fair value of these securities below the hedge price per share while allowing us to retain upside appreciation from the hedge price per share to the relevant cap price.  The contracts' actual hedge prices per share vary depending on average stock prices in effect at the time the contracts were executed.  The contracts' actual cap prices vary depending on the maturity and terms of each contract, among other factors.  If any one of these contracts is terminated prior to its scheduled maturity date due to the occurrence of an event specified in the contract, we would be obligated to repay the fair value of the collateralized indebtedness less the sum of the fair values of the underlying stock and equity collar, calculated at the termination date.  As of March 31, 2021, we did not have an early termination shortfall relating to any of these contracts.

The underlying stock and the equity collars are carried at fair value in our consolidated balance sheet and the collateralized indebtedness is carried at its principal value, net of discounts. These discounts are being amortized over the term of the related indebtedness. The carrying value of our collateralized indebtedness amounted to $1,677,985 at March 31, 2021.  At maturity, the contracts provide for the option to deliver cash or shares of Comcast common stock, with a value determined by reference to the applicable stock price at maturity.

As of March 31, 2021, the fair value and the carrying value of our holdings of Comcast common stock aggregated $2,324,308.  Assuming a 10% change in price, the potential change in the fair value of these investments would be approximately $232,431.  As of March 31, 2021, the net fair value and the carrying value of the equity collar component of the equity derivative contracts entered into to partially hedge the equity price risk of our holdings of Comcast common stock aggregated $301,418, a net liability position.  For the three months ended March 31, 2021, we recorded a net loss of $53,565 related to our outstanding equity derivative contracts and recorded an unrealized gain of $73,453 related to the Comcast common stock that we held.

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Fair Value of Equity Derivative Contracts
Fair value as of December 31, 2020, net liability position	$	(247,853)
Change in fair value, net	(53,565)
Fair value as of March 31, 2021, net liability position	$	(301,418)

The maturity, number of shares deliverable at the relevant maturity, hedge price per share, and the lowest and highest cap prices received for the Comcast common stock monetized via an equity derivative prepaid forward contract are summarized in the following table:

# of Shares Deliverable	Maturity	Hedge Price per Share (a)	Cap Price (b)
42,955,236	2023	$40.95	$	49.55

(a)Represents the price below which we are provided with downside protection and above which we retain upside appreciation.  Also represents the price used in determining the cash proceeds payable to us at inception of the contracts.

(b)Represents the price up to which we receive the benefit of stock price appreciation.

Fair Value of Debt

At March 31, 2021, the fair value of our fixed rate debt of $18,969,961 was higher than its carrying value of $18,288,784 by $681,177.  The fair value of these financial instruments is estimated based on reference to quoted market prices for these or comparable securities.  Our floating rate borrowings bear interest in reference to current LIBOR-based market rates and thus their principal values approximate fair value.  The effect of a hypothetical 100 basis point decrease in interest rates prevailing at March 31, 2021 would increase the estimated fair value of our fixed rate debt by $724,029 to $19,693,990.  This estimate is based on the assumption of an immediate and parallel shift in interest rates across all maturities.

Interest Rate Risk

To manage interest rate risk, we have from time to time entered into interest rate swap contracts to adjust the proportion of total debt that is subject to variable and fixed interest rates. Such contracts effectively fix the borrowing rates on floating rate debt to provide an economic hedge against the risk of rising rates and/or effectively convert fixed rate borrowings to variable rates to permit the Company to realize lower interest expense in a declining interest rate environment. We monitor the financial institutions that are counterparties to our interest rate swap contracts and we only enter into interest rate swap contracts with financial institutions that are rated investment grade. All such contracts are carried at their fair market values on our consolidated balance sheets, with changes in fair value reflected in the consolidated statements of operations. See Note 11 to our Consolidated Financial Statements for a summary of interest rate swap contracts outstanding at March 31, 2021. The Company's outstanding swap contracts are not designated as hedges for accounting purposes. Accordingly, the changes in the fair value of these interest rate swap contracts are recorded through the statement of operations. For the three months ended March 31, 2021, the Company recorded a gain on interest rate swap contracts of $75,653.

The following represents the location of the assets and liabilities associated with the Company's equity derivative contracts and interest rate swap contracts within the consolidated balance sheets:

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Derivatives Not Designated as Hedging Instruments	Balance Sheet Location	Fair Value at March 31, 2021
Asset Derivatives:
Interest rate swap contracts	Derivative contracts, short-term	$	8,252
Prepaid forward contracts	Derivative contracts, short-term	—
Interest rate swap contracts	Derivative contracts, long-term	—
		8,252
Liability Derivatives:
Interest rate swap contracts	Other current liabilities	—
Prepaid forward contracts	Other current liabilities	(12,861)
Prepaid forward contracts	Liabilities under derivative contracts, long-term	(301,418)
Interest rate swap contracts	Liabilities under derivative contracts, long-term	(170,984)
		$	(485,263)

As of March 31, 2021, we did not hold and have not issued derivative instruments for trading or speculative purposes.

Item 4.    Controls and Procedures

Evaluation of Disclosure Controls and Procedures

An evaluation was carried out under the supervision and with the participation of Altice USA's management, including our Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures (as defined under SEC rules).  Based upon that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that the design and operation of these disclosure controls and procedures were effective as of March 31, 2021.

Changes in Internal Control

During the three months ended March 31, 2021, there were no changes in the Company's internal control over financial reporting that materially affected or are reasonably likely to materially affect the Company's internal control over financial reporting.

PART II.    OTHER INFORMATION

Item 1.        Legal Proceedings

Refer to Note 16 to our consolidated financial statements included in this Quarterly Report on Form 10-Q for a discussion of our legal proceedings.

Item 1A.    Risk Factors

Our business, financial condition and results of operations may be adversely affected by the recent COVID-19 pandemic.

The coronavirus pandemic ("COVID-19"), and measures to prevent its spread, may have a material adverse impact on our business, financial condition and results of operations. The severity and timing of the impact will depend on a number of factors, including the level and rapidity of infection, duration of containment measures, changes in consumer spending patterns, measures imposed or taken by governmental authorities in response to the pandemic, macroeconomic conditions in our markets, and negative effects on the financial condition of our customers.

Under difficult economic conditions, including prolonged unemployment and employment furloughs, demand for our products and services could decline and some customers may be unable or unwilling to pay for our products and services. Additionally, in order to prioritize the demands of the business, we may delay certain capital investments, such as FTTH or in other new initiatives, products or services, which may adversely affect our business in the future.

Governmental and non-governmental initiatives to reduce the transmission of COVID-19, such as the imposition of restrictions on work and public gatherings and the promotion of social distancing, along with new government service, collection, pricing or rebate mandates, have impacted and will continue to impact our operations and financial results. These measures include New Jersey executive orders enacted in April and October 2020 that require us to maintain broadband service and not impose late fees for certain non-paying customers and recent New

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York legislation expected to be enacted that would require us, during the pendency of the pandemic emergency and a period thereafter, to maintain broadband, video and voice services for non-paying customers and offer deferred payment plans to customers experiencing financial difficulty. Our suppliers and vendors also may be affected by such measures in their ability to provide products and services to us and these measures could also make it more difficult for us to serve our customers.

If these events occur and were to continue, our revenue, operating margins and cash flows may be materially reduced.

In addition, the impact that the COVID-19 pandemic will have on our business, financial condition and results of operations could exacerbate the risks identified in "Item 1A. Risk Factors" in our Annual Report on Form 10-K.

Item 2.        Unregistered Sales of Equity Securities and Use of Proceeds

(a)    Sales of Unregistered Securities

Set forth below is information related to transactions under the Company's share repurchase program for the quarter ended March 31, 2021.

	(a) Total Number of Shares (or Units) Purchased	(b) Average Price Paid per Share (or Unit)		(c) Total Number of Shares (or Units) Purchased as Part of Publicly Announced Plans or Programs (1)(2)	(d) Maximum Number (or Approximate Dollar Value) of Shares (or Units) that May Yet Be Purchased Under the Plans or Programs (1)
January 1- January 31	2,520,426	$	35.70	264,434,471	$	1,906,246,308
February 1- February 28	5,893,081	34.61		270,327,552	1,702,290,406
March 1 - March 31	6,766,190	33.81		277,093,742	1,473,557,510

(1)On June 8, 2018, the Company's Board of Directors authorized the repurchase of up to $2.0 billion of Altice USA Class A common stock. On July 30, 2019, the Board of Directors authorized a new incremental three-year share repurchase program of $5.0 billion, to take effect following the completion of the June 2018 repurchase program. In November 2020, the Board of Directors authorized an additional incremental $2.0 billion of share repurchases bringing the total amount of cumulative share repurchases authorized to $9.0 billion. Under these repurchase programs, shares of Altice USA Class A common stock may be purchased from time to time in the open market and may include trading plans entered into with one or more brokerage firms in accordance with Rule 10b5-1 under the Securities Exchange Act of 1934. The programs do not have an expiration date and may be suspended at any time at the discretion of the Board of Directors.

(2)This column reflects the cumulative number of shares acquired pursuant to the repurchase program at the end of the respective period.

Item 6.        Exhibits

EXHIBIT NO.	DESCRIPTION
31.1	Section 302 Certification of the CEO.
31.2	Section 302 Certification of the CFO.
32	Section 906 Certifications of the CEO and CFO.
101	The following financial statements from Altice USA's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2021 filed with the Securities and Exchange Commission on April 28, 2021 formatted in XBRL (eXtensible Business Reporting Language):  (i) the Consolidated Balance Sheets; (ii) the Consolidated Statements of Operations; (iii) the Consolidated Statements of Comprehensive Income (Loss); (iv) the Consolidated Statements of Stockholders' Equity (Deficiency); (v) the Consolidated Statements of Cash Flows; and (vi) the Combined Notes to Consolidated Financial Statements.
104	The cover page from this quarterly report on Form 10-Q formatted in Inline XBRL.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. 

		ALTICE USA, INC.
Date:	April 28, 2021		/s/ Michael J. Grau
		By:	Michael J. Grau Chief Financial Officer

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EX-31.1

Exhibit 31.1

CERTIFICATION

I, Dexter Goei, Chief Executive Officer and Director of Altice USA, Inc., certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Altice USA, Inc.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including their consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures as of the end of the period covered by this report based on such evaluation; and

(d)disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting;

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	April 28, 2021	By:	/s/ Dexter Goei
			Dexter Goei
			Chief Executive Officer and Director

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Michael J. Grau, Chief Financial Officer of Altice USA, Inc., certify that:

1.I have reviewed this report on Form 10-Q of Altice USA, Inc.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including their consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures as of the end of the period covered by this report based on such evaluation; and

(d)disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting;

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	April 28, 2021	By:	/s/ Michael J. Grau
			Michael J. Grau
			Chief Financial Officer

EX-32

Exhibit 32 

Certifications 

Pursuant to 18 U.S.C. § 1350, each of the undersigned officers of Altice USA, Inc. ("Altice USA") hereby certifies, to such officer's knowledge, that Altice USA's Quarterly Report on Form 10-Q for the quarter ended March 31, 2021 (the "Report") fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934, and that the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of Altice USA.

Date:	April 28, 2021	By:	/s/ Dexter Goei
			Dexter Goei
			Chief Executive Officer and Director
Date:	April 28, 2021	By:	/s/ Michael J. Grau
			Michael J. Grau
			Chief Financial Officer

XML

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2021	Apr. 19, 2021
Document and Entity Information [Abstract]
Title of 12(b) Security	Class A Common Stock, par value $0.01 per share
Entity Interactive Data Current	Yes
Entity File Number	001-38126
Document Transition Report	false
Document Type	10-Q
Entity Central Index Key	0001702780
Entity Registrant Name	Altice USA, Inc.
Document Fiscal Year Focus	2021
Entity Filer Category	Large Accelerated Filer
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Document Period End Date	Mar. 31, 2021
Entity Common Stock, Shares Outstanding		459,814,587
Entity Current Reporting Status	Yes
Entity Small Business	false
Current Fiscal Year End Date	--12-31
Entity Tax Identification Number	38-3980194
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	1 Court Square West
Entity Address, City or Town	Long Island City,
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	11101
City Area Code	(516)
Local Phone Number	803-2300
Trading Symbol	ATUS
Security Exchange Name	NYSE
Document Quarterly Report	true

XML

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current Assets:
Cash and cash equivalents	$ 220,571	$ 278,422
Restricted cash	264	264
Accounts receivable, trade (less allowance for doubtful accounts of $22,395 and $25,198)	376,155	442,581
Prepaid expenses and other current assets	221,819	200,252
Amounts due from affiliates	3,795	4,262
Derivative contracts	8,252	50,785
Total current assets	830,856	976,566
Property, plant and equipment, net of accumulated depreciation of $6,639,771 and $6,431,843	5,843,572	5,805,996
Right-of-use operating lease assets	234,358	241,342
Investment securities pledged as collateral		2,250,854
Derivative contracts	0	4,774
Other assets	92,137	87,429
Amortizable intangibles, net of accumulated amortization of $4,574,426 and $4,409,312	2,616,017	2,781,116
Indefinite-lived cable television franchises	13,068,017	13,068,017
Goodwill	8,160,566	8,160,566
Total assets	33,169,831	33,376,660
Current Liabilities:
Accounts payable	879,032	795,576
Interest payable	233,968	252,060
Accrued employee related costs	104,220	142,116
Amounts due to affiliates	12,698	8,538
Deferred revenue	153,032	109,798
Debt	1,258,055	1,245,713
Other current liabilities	550,263	544,302
Total current liabilities	3,191,268	3,098,103
Other liabilities	172,766	192,563
Deferred tax liability	5,037,625	5,006,167
Liabilities under derivative contracts	472,402	523,150
Right-of-use operating lease liability	248,758	257,424
Long-term debt, net of current maturities	25,431,481	25,476,629
Total liabilities	34,554,300	34,554,036
Commitments and contingencies (Note 16)
Redeemable equity	3,104	25,763
Stockholders' Deficiency:
Preferred stock, $0.01 par value, 100,000,000 shares authorized, no shares issued and outstanding	0	0
Paid-in capital	0	0
Accumulated deficit	(1,185,610)	(985,641)
Total stockholders' equity before accumulated other comprehensive Income and non-controlling interest	(1,180,930)	(980,810)
Treasury stock, at cost (6,066,251 and 6,629,415 Class A common shares at March 31, 2021 and December 31, 2020, respectively)	163,860	163,866
Accumulated other comprehensive income	10,621	3,646
Total Altice USA stockholders' deficiency	(1,334,169)	(1,141,030)
Noncontrolling interests	(53,404)	(62,109)
Total stockholders' deficiency	(1,387,573)	(1,203,139)
Total liabilities and stockholders' deficiency	33,169,831	33,376,660
Common Class A
Stockholders' Deficiency:
Common stock	2,822	2,972
Common Class B
Stockholders' Deficiency:
Common stock	1,858	1,859
Common Class C
Stockholders' Deficiency:
Common stock	0	0
CSC Holdings
Current Assets:
Cash and cash equivalents	220,214	277,938
Restricted cash	264	264
Accounts receivable, trade (less allowance for doubtful accounts of $22,395 and $25,198)	376,155	442,581
Prepaid expenses and other current assets	221,819	200,252
Amounts due from affiliates	3,795	4,262
Derivative contracts	8,252	50,785
Total current assets	830,499	976,082
Property, plant and equipment, net of accumulated depreciation of $6,639,771 and $6,431,843	5,843,572	5,805,996
Right-of-use operating lease assets	234,358	241,342
Investment securities pledged as collateral	2,324,308	2,250,854
Derivative contracts	0	4,774
Other assets	92,137	87,429
Amortizable intangibles, net of accumulated amortization of $4,574,426 and $4,409,312	2,616,017	2,781,116
Indefinite-lived cable television franchises	13,068,017	13,068,017
Goodwill	8,160,566	8,160,566
Total assets	33,169,474	33,376,176
Current Liabilities:
Accounts payable	879,032	795,576
Interest payable	233,968	252,060
Accrued employee related costs	104,220	142,116
Amounts due to affiliates	12,698	8,538
Deferred revenue	153,032	109,798
Debt	1,258,055	1,245,713
Other current liabilities	530,853	543,834
Total current liabilities	3,171,858	3,097,635
Other liabilities	172,766	192,563
Deferred tax liability	5,065,438	5,033,980
Liabilities under derivative contracts	472,402	523,150
Right-of-use operating lease liability		257,424
Long-term debt, net of current maturities	25,431,481	25,476,629
Total liabilities	34,562,703	34,581,381
Redeemable equity	3,104	25,763
Stockholders' Deficiency:
Accumulated other comprehensive income	10,621	3,646
Noncontrolling interests	(53,404)	(62,109)
Total liabilities and stockholders' deficiency	$ 33,169,474	$ 33,376,176

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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Assets [Abstract]
Property, plant and equipment, accumulated depreciation	$ 6,639,771	$ 6,431,843
Amortizable intangible assets, accumulated amortization	$ 4,574,426	4,409,312
Accounts receivable, trade allowance for doubtful accounts		$ 25,198
Stockholders' Deficiency:
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	100,000,000	100,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Treasury Stock, Shares, Acquired	6,066,251	6,629,415
Common stock, shares outstanding (in shares)	461,977,407
Common Class A
Stockholders' Deficiency:
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	4,000,000,000	4,000,000,000
Common stock, shares issued (in shares)	282,245,265	297,203,087
Common stock, shares outstanding (in shares)	276,179,014	290,573,672
Common Class B
Stockholders' Deficiency:
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares outstanding (in shares)	185,798,393	185,895,903
Common Class C
Stockholders' Deficiency:
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	4,000,000,000	4,000,000,000
Common stock, shares issued (in shares)	0	0
Common stock, shares outstanding (in shares)	0	0

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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Revenue (including revenue from affiliates of $3,406 and $3,488 respectively) (See Note 15)	$ 2,478,821	$ 2,450,256
Operating expenses:
Programming and other direct costs (including charges from affiliates of $2,228 and $2,189 respectively) (See Note 15)	851,864	864,514
Other operating expenses (including charges from affiliates of $3,179 and $3,941 respectively) (See Note 15)	580,433	582,309
Restructuring and other expense	3,209	7,294
Depreciation and amortization (including impairments)	434,857	547,569
Total operating expenses	1,870,363	2,001,686
Operating income	608,458	448,570
Other income (expense):
Interest expense	(316,339)	(365,211)
Interest income	27	1,659
Gain (loss) on investments and sale of affiliate interests, net	73,453	(455,473)
Gain (loss) on derivative contracts related to change in the value of equity derivative contracts related to Comcast common stock	(53,565)	439,861
Gain (loss) on interest rate swap contracts, net of a gain of $74,835 recorded in the 2020 period in connection with the early termination of the swap agreements discussed below	75,653	(54,832)
Other income, net	2,859	923
Total other income (expense)	(217,912)	(433,073)
Income before income taxes	390,546	15,497
Income Tax Expense (Benefit)	(112,007)	(17,035)
Net income (loss)	278,539	(1,538)
Net loss (income) attributable to noncontrolling interests	(4,403)	680
Net income (loss) attributable to Altice USA, Inc. stockholders	$ 274,136	$ (858)
Income (loss) per share:
Basic income (loss) per share	$ 0.58	$ 0
Basic weighted average common shares (in thousands)	469,233	621,414
Diluted income (loss) per share	$ 0.58	$ 0
Diluted weighted average common shares (in thousands)	475,448	621,414
Cash dividends declared per common share	$ 0	$ 0

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CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Revenue from affiliates	$ 3,406	$ 3,488
Programming and other direct costs from affiliates	2,228	2,189
Other operating expenses from affiliates	$ 3,179	$ 3,941

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 278,539	$ (1,538)
Defined benefit pension plans:
Unrecognized actuarial gain (loss)		(13,469)
Applicable income taxes		3,598
Unrecognized gain (loss) arising during period, net of income taxes	6,906	(9,871)
Settlement loss (gain) included in other expense, net		502
Applicable income taxes		(134)
Settlement loss (gain) included in other expense, net, net of income taxes	(550)	368
Foreign currency translation adjustment		(424)
Applicable income taxes		0
Foreign currency translation adjustment, net	619	(424)
Other comprehensive income (loss)	6,975	(9,927)
Comprehensive income (loss)	285,514	(11,465)
Comprehensive loss (income) attributable to noncontrolling interests		680
Comprehensive income (loss) attributable to Altice USA, Inc. stockholders	$ 281,111	$ (10,785)

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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Parent [Member]	Member's Equity (Deficiency)	Accumulated Deficit	Treasury Stock	Accumulated Other Comprehensive Income	Noncontrolling Interests	Common Class A Common Stock	Common Class B Common Stock
Beginning balance at Dec. 31, 2019	$ 2,279,262	$ 2,269,964	$ 2,039,918		$ (163,904)	$ (3,250)	$ 9,298	$ 4,572	$ 1,862
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to Altice USA, Inc. stockholders	(858)			$ (858)				(858)	0
Net loss (income) attributable to noncontrolling interests	680						680
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Plan Amendments, Net Of Tax	9,503	9,503				9,503
Foreign currency translation adjustment, net	(424)	(424)				(424)
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	27,370	27,370	27,370
Redeemable equity vested	29,479	29,479	29,479
Adjustments to Additional Paid in Capital, Increase in Carrying Amount of Redeemable Preferred Stock	13,260	13,260	13,260
Class A shares acquired through share repurchase program and retired	(749,998)	(749,998)	(749,686)					(312)
Stock Issued During Period, Value, New Issues	2,507	2,507			11
Other							4,302
Ending balance at Mar. 31, 2020	1,590,415	1,581,797	1,362,836		(163,893)	(13,177)	8,618	4,261	1,862
Beginning balance at Dec. 31, 2020	(1,203,139)	(1,141,030)	0	(985,641)	(163,866)	3,646	(62,109)	2,972	1,859
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to Altice USA, Inc. stockholders	274,136	274,136		274,136
Net loss (income) attributable to noncontrolling interests	(4,403)						(4,403)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Plan Amendments, Net Of Tax	(6,356)	(6,356)				6,356
Foreign currency translation adjustment, net	619	619				619
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	27,964	27,964		27,964
Redeemable equity vested	20,131	20,131		20,131
Adjustments to Additional Paid in Capital, Increase in Carrying Amount of Redeemable Preferred Stock	2,528	2,528		2,528
Class A shares acquired through share repurchase program and retired	(522,673)	(522,673)		(522,521)				(152)
Conversion of Class B to Class A shares								1	(1)
Stock Issued During Period, Value, New Issues	2,044	2,044	2,495	2,037	6			1
Other	58	(4,244)	0	(4,244)
Ending balance at Mar. 31, 2021	$ (1,387,573)	$ (1,334,169)	$ 0	$ (1,185,610)	$ (163,860)	$ 10,621	$ (53,404)	$ 2,822	$ 1,858

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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities:
Net income (loss)	$ 278,539	$ (1,538)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization (including impairments)	434,857	547,569
Loss (gain) on investments and sale of affiliate interests, net	(73,453)	455,473
Gain (Loss) on Price Risk Derivative Instruments Not Designated as Hedging Instruments	53,565	(439,861)
Amortization of deferred financing costs and discounts (premiums) on indebtedness	23,039	23,944
Share-based compensation expense	28,281	27,946
Deferred income taxes	29,165	30,225
Decrease in right-of-use assets	10,816	11,474
Provision for doubtful accounts	11,133	19,880
Other	1,074	1,849
Change in assets and liabilities, net of effects of acquisitions and dispositions:
Accounts receivable, trade	55,293	(4,458)
Prepaid expenses and other assets	(26,321)	(34,800)
Amounts due from and due to affiliates	4,627	3,894
Accounts payable and accrued liabilities	(29,696)	(165,728)
Deferred revenue	38,501	(5,153)
Liabilities related to interest rate swap contracts	(89,798)	122,849
Net cash provided by operating activities	749,622	593,565
Cash flows from investing activities:
Capital expenditures	(212,791)	(299,082)
Other, net	2,143	1,339
Net cash used in investing activities	(210,648)	(297,743)
Cash flows from financing activities:
Proceeds from long-term debt	150,000	0
Repayment of long-term debt	(225,863)	(18,183)
Proceeds from collateralized indebtedness and related derivative contracts, net	185,105	0
Repayment of collateralized indebtedness and related derivative contracts, net	(185,105)	0
Principal payments on finance lease obligations	(18,330)	(5,700)
Purchase of shares of Altice USA Class A common stock, pursuant to a share repurchase program	(503,645)	(726,005)
Other	(393)	2,915
Net cash used in financing activities	(597,445)	(752,803)
Net decrease in cash and cash equivalents	(58,471)	(456,981)
Effect of exchange rate changes on cash and cash equivalents	620	(424)
Net decrease in cash and cash equivalents	(57,851)	(457,405)
Cash, cash equivalents and restricted cash at beginning of year	278,686	702,160
Cash, cash equivalents and restricted cash at end of period	$ 220,835	$ 244,755

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CSC HOLDINGS - CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current Assets:
Cash and cash equivalents	$ 220,571	$ 278,422
Restricted cash	264	264
Accounts receivable, trade (less allowance for doubtful accounts of $13,420 and $11,677)	376,155	442,581
Prepaid expenses and other current assets (including a prepayment to an affiliate of $19,563 in 2017) (See Note 14)	221,819	200,252
Amounts due from affiliates	3,795	4,262
Derivative contracts	8,252	50,785
Total current assets	830,856	976,566
Property, plant and equipment, net	5,843,572	5,805,996
Right-of-use operating lease assets	234,358	241,342
Investment securities pledged as collateral		2,250,854
Derivative contracts	0	4,774
Other assets	92,137	87,429
Amortizable intangible assets, net of accumulated amortization	2,616,017	2,781,116
Indefinite-lived cable television franchises	13,068,017	13,068,017
Goodwill	8,160,566	8,160,566
Total assets	33,169,831	33,376,660
Current Liabilities:
Accounts payable	879,032	795,576
Interest payable	233,968	252,060
Accrued employee related costs	104,220	142,116
Amounts due to affiliates	12,698	8,538
Deferred revenue	153,032	109,798
Debt	1,258,055	1,245,713
Other current liabilities	550,263	544,302
Total current liabilities	3,191,268	3,098,103
Other liabilities	172,766	192,563
Deferred tax liability	5,037,625	5,006,167
Liabilities under derivative contracts	472,402	523,150
Right-of-use operating lease liability	248,758	257,424
Long-term debt, net of current maturities	25,431,481	25,476,629
Total liabilities	34,554,300	34,554,036
Commitments and contingencies (Note 16)
Redeemable equity	3,104	25,763
Limited Liability Company (LLC) Members' Equity [Abstract]
Accumulated other comprehensive income (loss)	10,621	3,646
Noncontrolling interests	(53,404)	(62,109)
Total liabilities and stockholders' deficiency	33,169,831	33,376,660
Customer Relationships [Member]
Current Assets:
Amortizable intangible assets, net of accumulated amortization	2,433,901	2,573,856
Other Intangible Assets [Member]
Current Assets:
Amortizable intangible assets, net of accumulated amortization	18,853	20,366
CSC Holdings
Current Assets:
Cash and cash equivalents	220,214	277,938
Restricted cash	264	264
Accounts receivable, trade (less allowance for doubtful accounts of $13,420 and $11,677)	376,155	442,581
Prepaid expenses and other current assets (including a prepayment to an affiliate of $19,563 in 2017) (See Note 14)	221,819	200,252
Amounts due from affiliates	3,795	4,262
Derivative contracts	8,252	50,785
Total current assets	830,499	976,082
Property, plant and equipment, net	5,843,572	5,805,996
Right-of-use operating lease assets	234,358	241,342
Investment securities pledged as collateral	2,324,308	2,250,854
Derivative contracts	0	4,774
Other assets	92,137	87,429
Amortizable intangible assets, net of accumulated amortization	2,616,017	2,781,116
Indefinite-lived cable television franchises	13,068,017	13,068,017
Goodwill	8,160,566	8,160,566
Total assets	33,169,474	33,376,176
Current Liabilities:
Accounts payable	879,032	795,576
Interest payable	233,968	252,060
Accrued employee related costs	104,220	142,116
Amounts due to affiliates	12,698	8,538
Deferred revenue	153,032	109,798
Debt	1,258,055	1,245,713
Other current liabilities	530,853	543,834
Total current liabilities	3,171,858	3,097,635
Other liabilities	172,766	192,563
Deferred tax liability	5,065,438	5,033,980
Liabilities under derivative contracts	472,402	523,150
Right-of-use operating lease liability		257,424
Long-term debt, net of current maturities	25,431,481	25,476,629
Total liabilities	34,562,703	34,581,381
Redeemable equity	3,104	25,763
Limited Liability Company (LLC) Members' Equity [Abstract]
Membership interest before accumulated comprehensive loss	(1,353,550)	(1,172,505)
Accumulated other comprehensive income (loss)	10,621	3,646
Membership equity before noncontrolling interest	(1,342,929)	(1,168,859)
Noncontrolling interests	(53,404)	(62,109)
Total Equity (Deficiency)	(1,396,333)	(1,230,968)
Total liabilities and stockholders' deficiency	$ 33,169,474	$ 33,376,176

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CSC HOLDINGS - CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Accounts receivable, trade allowance for doubtful accounts		$ 25,198
Property, plant and equipment, accumulated depreciation	$ 6,639,771	6,431,843
Amortizable intangible assets, accumulated amortization	4,574,426	4,409,312
CSC Holdings
Accounts receivable, trade allowance for doubtful accounts	22,395	25,198
Property, plant and equipment, accumulated depreciation	6,639,771	6,431,843
Amortizable intangible assets, accumulated amortization	$ 4,574,426	$ 4,409,312
Members' Equity	100	100
Common Unit, Outstanding	100	100

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CSC HOLDINGS - CONSOLIDATED STATEMENT OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenue (including revenue from affiliates of $3,406 and $3,488 respectively) (See Note 15)	$ 2,478,821	$ 2,450,256
Operating expenses:
Programming and other direct costs (including charges from affiliates of $2,228 and $2,189 respectively) (See Note 15)	851,864	864,514
Other operating expenses (including charges from affiliates of $3,179 and $3,941 respectively) (See Note 15)	580,433	582,309
Restructuring and other expense	3,209	7,294
Depreciation and amortization (including impairments)	434,857	547,569
Total operating expenses	1,870,363	2,001,686
Operating income	608,458	448,570
Other income (expense):
Interest expense	(316,339)	(365,211)
Interest income	27	1,659
Gain (loss) on investments and sale of affiliate interests, net	73,453	(455,473)
Loss on equity derivative contracts, net	(53,565)	439,861
Gain (loss) on interest rate swap contracts, net of a gain of $74,835 recorded in the 2020 period in connection with the early termination of the swap agreements discussed below	75,653	(54,832)
Other income, net	2,859	923
Total other income (expense)	(217,912)	(433,073)
Income before income taxes	390,546	15,497
Income Tax Expense (Benefit)	(112,007)	(17,035)
Net income	278,539	(1,538)
Net loss (income) attributable to noncontrolling interests	(4,403)	680
Net income attributable to CSC Holdings, LLC sole member	274,136	(858)
CSC Holdings
Revenue (including revenue from affiliates of $3,406 and $3,488 respectively) (See Note 15)	2,478,821	2,450,256
Operating expenses:
Programming and other direct costs (including charges from affiliates of $2,228 and $2,189 respectively) (See Note 15)	851,864	864,514
Other operating expenses (including charges from affiliates of $3,179 and $3,941 respectively) (See Note 15)	580,433	582,309
Restructuring and other expense	3,209	7,294
Depreciation and amortization (including impairments)	434,857	547,569
Total operating expenses	1,870,363	2,001,686
Operating income	608,458	448,570
Other income (expense):
Interest expense	(316,339)	(365,211)
Interest income	27	1,659
Gain (loss) on investments and sale of affiliate interests, net	73,453	(455,819)
Loss on equity derivative contracts, net	(53,565)	439,861
Gain (loss) on interest rate swap contracts, net of a gain of $74,835 recorded in the 2020 period in connection with the early termination of the swap agreements discussed below	75,653	(54,832)
Other income, net	2,859	923
Total other income (expense)	(217,912)	(433,419)
Income before income taxes	390,546	15,151
Income Tax Expense (Benefit)	(112,007)	(5,029)
Net income	278,539	10,122
Net loss (income) attributable to noncontrolling interests	(4,403)	680
Net income attributable to CSC Holdings, LLC sole member	$ 274,136	$ 10,802

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CSC HOLDINGS - CONSOLIDATED STATEMENT OF OPERATIONS (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Revenue from affiliates	$ 3,406	$ 3,488
Programming and other direct costs from affiliates	2,228	2,189
Related Party Transaction, Other Operating Expense	$ 3,179	$ 3,941

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CSC HOLDINGS - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net income	$ 278,539	$ (1,538)
Defined benefit pension and postretirement plans:
Unrecognized actuarial gain (loss)		(13,469)
Applicable income taxes		3,598
Unrecognized gain (loss) arising during period, net of income taxes	6,906	(9,871)
Settlement loss (gain) included in other expense, net		502
Applicable income taxes		(134)
Settlement loss (gain) included in other expense, net, net of income taxes	(550)	368
Foreign currency translation adjustment		(424)
Applicable income taxes		0
Foreign currency translation adjustment, net	619	(424)
Other comprehensive income (loss)	6,975	(9,927)
Comprehensive income (loss)	285,514	(11,465)
Comprehensive loss (income) attributable to noncontrolling interests		680
Comprehensive income (loss) attributable to Altice USA, Inc. stockholders	281,111	(10,785)
CSC Holdings
Net income	278,539	10,122
Defined benefit pension and postretirement plans:
Unrecognized actuarial gain (loss)	9,396	(13,469)
Applicable income taxes	(2,490)	3,598
Unrecognized gain (loss) arising during period, net of income taxes	6,906	(9,871)
Settlement loss (gain) included in other expense, net	(748)	502
Applicable income taxes	198	(134)
Settlement loss (gain) included in other expense, net, net of income taxes	(550)	368
Foreign currency translation adjustment	619	(424)
Applicable income taxes	0
Foreign currency translation adjustment, net	619	(424)
Other comprehensive income (loss)	6,975	(9,927)
Comprehensive income (loss)	285,514	195
Comprehensive loss (income) attributable to noncontrolling interests	(4,403)	680
Comprehensive income (loss) attributable to Altice USA, Inc. stockholders	$ 281,111	$ 875

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CSC HOLDINGS - CONSOLIDATED STATEMENT OF MEMBER'S EQUITY - USD ($) $ in Thousands	Total	CSC Holdings	Total Member's Equity (Deficiency)	Total Member's Equity (Deficiency) CSC Holdings	Noncontrolling Interests	Noncontrolling Interests CSC Holdings	Member's Equity (Deficiency)	Member's Equity (Deficiency) CSC Holdings	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) CSC Holdings
Accumulated deficit									$ 390,766
Member's Equity (Deficiency)								$ 2,047,397
Accumulated other comprehensive income											$ (3,250)
Membership equity before noncontrolling interest				$ 2,044,147
Noncontrolling interests		$ 9,298
Total Equity (Deficiency)		2,053,445
Net income attributable to CSC Holdings, LLC sole member	$ (858)	10,802		10,802				10,802	(858)
Net Income (Loss) Attributable to Noncontrolling Interest	(680)	(680)			$ (680)	$ (680)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Plan Amendments, Net Of Tax	(9,503)	(9,503)	$ (9,503)	(9,503)						$ (9,503)	(9,503)
Foreign currency translation adjustment, net	(424)	(424)	(424)	(424)						(424)	(424)
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	27,370	27,370	27,370	27,370			$ 27,370	27,370
Redeemable equity vested	29,479	29,479	29,479	29,479			29,479	29,479
Adjustments to Additional Paid in Capital, Increase in Carrying Amount of Redeemable Preferred Stock	(13,260)	(13,260)	(13,260)	(13,260)			$ (13,260)	(13,260)
Cash distributions to parent		720,350		720,350				720,350
Intercompany settlement		(150,602)		(150,602)				(150,602)
Distributions to parent	150,602
Accumulated deficit									389,908
Member's Equity (Deficiency)								1,257,356
Accumulated other comprehensive income											(13,177)
Membership equity before noncontrolling interest				1,244,179
Noncontrolling interests		8,618				8,618
Total Equity (Deficiency)		1,252,797
Accumulated deficit	(985,641)
Member's Equity (Deficiency)								(1,172,505)
Accumulated other comprehensive income	3,646	3,646									3,646
Membership equity before noncontrolling interest		(1,168,859)		(1,168,859)
Noncontrolling interests	(62,109)	(62,109)				(62,109)
Total Equity (Deficiency)		(1,230,968)
Net income attributable to CSC Holdings, LLC sole member	274,136	274,136	274,136	274,136				274,136	274,136
Net Income (Loss) Attributable to Noncontrolling Interest	4,403	4,403			$ 4,403	4,403
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Plan Amendments, Net Of Tax	6,356	6,356	6,356	6,356						(6,356)	6,356
Foreign currency translation adjustment, net	619	619	619	619						$ 619	619
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	27,964	27,964	27,964	27,964				27,964	27,964
Redeemable equity vested	20,131	20,131	20,131	20,131				20,131	20,131
Adjustments to Additional Paid in Capital, Increase in Carrying Amount of Redeemable Preferred Stock	(2,528)	(2,528)	$ (2,528)	(2,528)				(2,528)	$ (2,528)
Cash distributions to parent		501,000		501,000				501,000
Intercompany settlement		745
Distributions to parent	745
Stockholders' Equity, Other		(502)		(4,804)		4,302		(4,804)
Accumulated deficit	(1,185,610)
Member's Equity (Deficiency)								$ (1,353,550)
Accumulated other comprehensive income	10,621	10,621									$ 10,621
Membership equity before noncontrolling interest		(1,342,929)		$ (1,342,929)
Noncontrolling interests	$ (53,404)	(53,404)				$ (53,404)
Total Equity (Deficiency)		$ (1,396,333)

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CSC HOLDINGS - CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities:
Net income	$ 278,539	$ (1,538)
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization (including impairments)	434,857	547,569
Loss (gain) on investments and sale of affiliate interests, net	(73,453)	455,473
Loss (gain) on derivative contracts, net	53,565	(439,861)
Amortization of deferred financing costs and discounts (premiums) on indebtedness	23,039	23,944
Share-based compensation expense	28,281	27,946
Deferred income taxes	29,165	30,225
Decrease in right-of-use assets	10,816	11,474
Provision for doubtful accounts	11,133	19,880
Other	1,074	1,849
Change in assets and liabilities, net of effects of acquisitions and dispositions:
Accounts receivable, trade	55,293	(4,458)
Prepaid expenses and other assets	(26,321)	(34,800)
Amounts due from and due to affiliates	4,627	3,894
Accounts payable and accrued liabilities	(29,696)	(165,728)
Deferred revenue	38,501	(5,153)
Liabilities related to interest rate swap contracts	(89,798)	122,849
Net cash provided by operating activities	749,622	593,565
Cash flows from investing activities:
Capital expenditures	(212,791)	(299,082)
Other, net	2,143	1,339
Net cash used in investing activities	(210,648)	(297,743)
Cash flows from financing activities:
Proceeds from long-term debt	150,000	0
Repayment of long-term debt	(225,863)	(18,183)
Proceeds from collateralized indebtedness and related derivative contracts, net	185,105	0
Repayment of collateralized indebtedness and related derivative contracts, net	(185,105)	0
Principal payments on finance lease obligations	(18,330)	(5,700)
Other	(393)	2,915
Net cash used in financing activities	(597,445)	(752,803)
Net decrease in cash and cash equivalents	(58,471)	(456,981)
Effect of exchange rate changes on cash and cash equivalents	620	(424)
Net decrease in cash and cash equivalents	(57,851)	(457,405)
Cash, cash equivalents and restricted cash at beginning of year	278,686	702,160
Cash, cash equivalents and restricted cash at end of period	220,835	244,755
CSC Holdings
Cash flows from operating activities:
Net income	278,539	10,122
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization (including impairments)	434,857	547,569
Loss (gain) on investments and sale of affiliate interests, net	(73,453)	455,819
Loss (gain) on derivative contracts, net	53,565	(439,861)
Amortization of deferred financing costs and discounts (premiums) on indebtedness	23,039	23,944
Share-based compensation expense	28,281	27,946
Deferred income taxes	29,165	172,835
Decrease in right-of-use assets	10,816	11,474
Provision for doubtful accounts	11,133	19,880
Other	1,074	1,849
Change in assets and liabilities, net of effects of acquisitions and dispositions:
Accounts receivable, trade	55,293	(4,458)
Prepaid expenses and other assets	(26,321)	(34,800)
Amounts due from and due to affiliates	3,882	(147,183)
Accounts payable and accrued liabilities	(29,611)	(165,723)
Deferred revenue	38,501	(5,153)
Liabilities related to interest rate swap contracts	(89,798)	122,849
Net cash provided by operating activities	748,962	597,109
Cash flows from investing activities:
Capital expenditures	(212,791)	(299,082)
Other, net	2,143	(2,669)
Net cash used in investing activities	(210,648)	(301,751)
Cash flows from financing activities:
Proceeds from long-term debt	150,000	0
Repayment of long-term debt	(225,863)	(18,183)
Proceeds from collateralized indebtedness and related derivative contracts, net	185,105	0
Repayment of collateralized indebtedness and related derivative contracts, net	(185,105)	0
Distributions to parent	501,000	720,350
Principal payments on finance lease obligations	(18,330)	(5,700)
Other	1,465	4,947
Net cash used in financing activities	(596,658)	(749,180)
Net decrease in cash and cash equivalents	(58,344)	(453,822)
Effect of exchange rate changes on cash and cash equivalents	620	(424)
Net decrease in cash and cash equivalents	(57,724)	(454,246)
Cash, cash equivalents and restricted cash at beginning of year	278,202	698,003
Cash, cash equivalents and restricted cash at end of period	$ 220,478	$ 243,757

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DESCRIPTION OF BUSINESS AND RELATED MATTERS

3 Months Ended

Mar. 31, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

DESCRIPTION OF BUSINESS AND RELATED MATTERS

DESCRIPTION OF BUSINESS AND RELATED MATTERS

The Company and Related Matters

Altice USA, Inc. ("Altice USA") was incorporated in Delaware on September 14, 2015. Altice USA is majority-owned by Patrick Drahi through Next Alt. S.a.r.l. ("Next Alt").

Altice USA, through CSC Holdings, LLC (a wholly-owned subsidiary of Cablevision Systems Corporation) and its consolidated subsidiaries ("CSC Holdings," and collectively with Altice USA, the "Company"), principally provides broadband communications and video services in the United States. It markets its residential services primarily under two brands: Optimum, in the New York metropolitan area, and Suddenlink, principally in markets in the south-central United States. It operates enterprise services under the brands Lightpath and Altice Business. It delivers broadband, video, telephony services, proprietary content and advertising services to residential and business customers. In September 2019, the Company launched Altice Mobile, a full service voice and data offering, to consumers across its footprint. As these brands are managed on a consolidated basis, the Company classifies its operations in one segment.

The accompanying consolidated financial statements ("consolidated financial statements") of Altice USA include the accounts of Altice USA and its majority-owned subsidiaries and the accompanying consolidated financial statements of CSC Holdings include the accounts of CSC Holdings and its majority-owned subsidiaries. Altice USA is a holding company and has no business operations independent of its CSC Holdings subsidiary, whose operating results and financial position are consolidated into Altice USA. The consolidated balance sheets and statements of operations of Altice USA are essentially identical to the consolidated balance sheets and statements of operations of CSC Holdings, with the following exceptions: Altice USA has additional cash and deferred taxes on its consolidated balance sheet. In addition, CSC Holdings and its subsidiaries have certain intercompany receivables from and payables to Altice USA. Differences between Altice USA's results of operations and those of CSC Holdings for the three months ended March 31, 2020 primarily include gain on investments and sale of affiliate interests, net and income tax expense recorded by Altice USA.

The combined notes to the consolidated financial statements relate to the Company, which, except as noted, are essentially identical for Altice USA and CSC Holdings. All significant intercompany transactions and balances between Altice USA or CSC Holdings and their respective consolidated subsidiaries are eliminated in both sets of consolidated financial statements. Intercompany transactions between Altice USA and CSC Holdings are not eliminated in the CSC Holdings consolidated financial statements, but are eliminated in the Altice USA consolidated financial statements.

The financial statements of CSC Holdings are included herein as supplemental information as CSC Holdings is not an SEC registrant.

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BASIS OF PRESENTATION

3 Months Ended

Mar. 31, 2021

Accounting Policies [Abstract]

Basis of Presentation and Significant Accounting Policies [Text Block]

BASIS OF PRESENTATION

The accompanying unaudited consolidated financial statements of the Company have been prepared in accordance with U.S. generally accepted accounting principles ("GAAP") and with the instructions to Form 10-Q and Article 10 of Regulation S-X for interim financial information.  Accordingly, these financial statements do not include all the information and notes required for complete annual financial statements.

The interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company's Annual Report on Form 10-K for the year ended December 31, 2020.

The financial statements presented in this report are unaudited; however, in the opinion of management, such financial statements include all adjustments, consisting of normal recurring adjustments, necessary for a fair presentation of the results for the periods presented.

The results of operations for the interim periods are not necessarily indicative of the results that might be expected for future interim periods or for the full year ending December 31, 2021.

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period.  Actual results could differ from those estimates. See Note 12 for a discussion of fair value estimates.

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COMMON STOCK

3 Months Ended

Mar. 31, 2021

Accounting Policies [Abstract]

Common stock

COMMON STOCK

Share Repurchase Plan

In June 2018, the Board of Directors of Altice USA authorized a share repurchase program of $2,000,000, and on July 30, 2019, the Board of Directors authorized a new incremental three-year share repurchase program of $5,000,000 that took effect following the completion in August 2019 of the $2,000,000 repurchase program. In November 2020, the Board of Directors authorized an additional incremental $2,000,000 of share repurchases bringing the total amount of cumulative share repurchases authorized to $9,000,000. Under these repurchase programs, shares of Altice USA Class A common stock may be purchased from time to time in the open market and may include trading plans entered into with one or more brokerage firms in accordance with Rule 10b5-1 under the Securities Exchange Act of 1934. Size and timing of these purchases will be determined based on market conditions and other factors.  

For the three months ended March 31, 2021, Altice USA repurchased an aggregate of 15,179,697 shares for a total purchase price of approximately $522,673. From inception through March 31, 2021, Altice USA repurchased an aggregate of 277,093,742 shares for a total purchase price of approximately $7,526,443. These acquired shares were retired and the cost of these shares was recorded in stockholders' deficiency in the consolidated balance sheet of Altice USA.  As of March 31, 2021, Altice USA had approximately $1,473,557 of availability remaining under the incremental share repurchase program and had 461,977,407 combined Class A and Class B shares outstanding.

Common Stock of Altice USA

The following table provides details of Altice USA's shares of common stock outstanding:

	Shares of Common Stock Outstanding
	Class A Common Stock	Class B Common Stock
Balance at December 31, 2020	290,573,672	185,895,903
Conversion of Class B common stock to Class A common stock	97,510	(97,510)
Option exercises	104,365	—
Repurchase and retirement of Class A common shares in connection with the Company's share repurchase plan (discussed above)	(15,179,697)	—
Treasury shares reissued	583,164	—
Balance at March 31, 2021	276,179,014	185,798,393

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Revenue Recognition and Deferred Revenue

3 Months Ended

Mar. 31, 2021

Revenue from Contract with Customer [Abstract]

Revenue from Contract with Customer

REVENUE

The following table presents the composition of revenue:

	Three Months Ended March 31,
	2021		2020
Broadband	$	970,571	$	885,529
Video	905,834		947,061
Telephony	106,981		125,030
Residential revenue	1,983,386		1,957,620
Business services and wholesale revenue	367,216		364,530
News and advertising	105,070		105,540
Mobile	19,235		18,356
Other	3,914		4,210
Total revenue	$	2,478,821	$	2,450,256

The Company is assessed non-income related taxes by governmental authorities, including franchising authorities (generally under multi-year agreements), and collects such taxes from its customers.  In instances where the tax is being assessed directly on the Company, amounts paid to the governmental authorities are recorded as programming and other direct costs and amounts received from the customers are recorded as revenue. For the three months ended March 31, 2021, and 2020, the amount of franchise fees and certain other taxes and fees included as a component of revenue aggregated $66,056, and $64,910, respectively.

Customer Contract Costs

Deferred enterprise commission costs are included in other noncurrent assets in the consolidated balance sheets and totaled $18,864 and $19,959 as of March 31, 2021 and December 31, 2020, respectively.

A significant portion of our revenue is derived from residential and SMB customer contracts which are month-to month. As such, the amount of revenue related to unsatisfied performance obligations is not necessarily indicative of the future revenue to be recognized from our existing customer base. Contracts with enterprise customers generally range from three years to five years, and services may only be terminated in accordance with the contractual terms.

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Earnings Per Share

3 Months Ended

Mar. 31, 2021

Earnings Per Share [Abstract]

Earnings Per Share

NET INCOME (LOSS) PER SHARE

Basic net income (loss) per common share attributable to Altice USA stockholders is computed by dividing net income (loss) attributable to Altice USA stockholders by the weighted average number of common shares outstanding during the period.  Diluted income per common share attributable to Altice USA stockholders reflects the dilutive effects of stock options and restricted stock. For such awards that are performance based, the diluted effect is reflected upon the achievement of the performance criteria. Diluted net loss per common share attributable to Altice USA stockholders excludes the effects of common stock equivalents as they are anti-dilutive.

The following table presents a reconciliation of weighted average shares used in the calculations of the basic and diluted net income per share attributable to Altice USA stockholders for the three months ended March 31, 2021 and 2020:

	Three Months Ended March 31,
	2021	2020
	(in thousands)
Basic weighted average shares outstanding	469,233	621,414
Effect of dilution:
Stock options	6,170	—
Restricted stock	45	—
Diluted weighted average shares outstanding	475,448	621,414
Weighted average shares excluded from diluted weighted average shares outstanding:
Anti-dilutive shares	495	22,525
Performance stock units and restricted stock whose performance metrics have not been achieved.	8,748	8,981

Net income (loss) per membership unit for CSC Holdings is not presented since CSC Holdings is a limited liability company and a wholly-owned subsidiary of Altice USA.

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SUPPLEMENTAL CASH FLOW INFORMATION

3 Months Ended

Mar. 31, 2020

Supplemental Cash Flow Elements [Abstract]

SUPPLEMENTAL CASH FLOW INFORMATION

SUPPLEMENTAL CASH FLOW INFORMATION

The Company's non-cash investing and financing activities and other supplemental data were as follows:

	Three Months Ended March 31,
	2021		2020
Non-Cash Investing and Financing Activities:
Altice USA and CSC Holdings:
Property and equipment accrued but unpaid	$	266,995	$	219,889
Unsettled purchases of shares of Altice USA, Inc. Class A common stock, pursuant to a share repurchase program	18,942		23,993
Right-of-use assets acquired in exchange for finance lease obligations	38,348		27,674
CSC Holdings:
Distributions to parent	745		150,602
Supplemental Data:
Altice USA:
Cash interest paid	310,878		474,268
Income taxes paid, net	9,727		1,195
CSC Holdings:
Cash interest paid	310,878		474,268
Income taxes paid, net	9,727		1,195

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RESTRUCTURING AND OTHER EXPENSE

3 Months Ended

Mar. 31, 2021

Restructuring and Related Activities [Abstract]

RESTRUCTURING AND OTHER EXPENSE

RESTRUCTURING AND OTHER EXPENSE

The Company's restructuring and other expense is comprised of the following:

	Three Months Ended March 31,
	2021		2020
Contractual payments for terminated employees	$	1,856	$	3,121
Facility realignment costs	324		1,979
Impairment of right-of-use operating lease assets	405		1,705
Transaction costs related to certain transactions not related to the Company's operations	624		489
	$	3,209	$	7,294

As of March 31, 2021, the outstanding amounts due to terminated employees of $13,185 and the outstanding amounts related to facility realignment costs of $5,503 are reflected in other current and other long-term liabilities in the Company's consolidated balance sheet.

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LEASES

3 Months Ended

Mar. 31, 2021

Leases [Abstract]

OPERATING LEASES

LEASES

The Company's operating leases are comprised primarily of facility leases and finance leases are comprised primarily of vehicle and equipment leases.

Balance sheet information related to our leases is presented below:

	Balance Sheet location	March 31, 2021		December 31, 2020
Operating leases:
Right-of-use lease assets	Right-of-use operating lease assets	$	234,358	$	241,342
Right-of-use lease liability, current	Other current liabilities	38,373		38,296
Right-of-use lease liability, long-term	Right-of-use operating lease liability	248,758		257,424
Finance leases:
Right-of-use lease assets	Property, plant and equipment	195,354		170,155
Right-of-use lease liability, current	Current portion of long-term debt	76,123		63,454
Right-of-use lease liability, long-term	Long-term debt	103,532		96,183

The following provides details of the Company's lease expense:

	Three Months Ended March 31,
	2021		2020
Operating lease expense, net	$	14,307	$	15,004
Finance lease expense:
Amortization of assets	11,574		4,460
Interest on lease liabilities	2,101		1,027
Total finance lease expense	13,675		5,487
	$	27,982	$	20,491

Other information related to leases is presented below:

	As of March 31,
	2021			2020
Right-of-use assets acquired in exchange for operating lease obligations	$	2,865		$	12,875
Cash Paid For Amounts Included In Measurement of Liabilities:
Operating cash flows related to finance leases	2,101			1,027
Operating cash flows related to operating leases	15,457			16,659
Weighted Average Remaining Lease Term:
Operating leases	8.8 years			9.3 years
Finance leases	2.4 years			3.1 years
Weighted Average Discount Rate:
Operating leases	5.60		%	5.90		%
Finance leases	5.16		%	5.50		%

The minimum future annual payments under non-cancellable leases during the next five years and thereafter, at rates now in force, are as follows:

	Finance leases		Operating leases
2021 (excluding the three months ended March 31, 2021)	$	62,394	$	30,274
2022	78,946		52,862
2023	43,839		45,139
2024	5,231		41,448
2025	292		33,458
Thereafter	—		167,700
Total future minimum lease payments, undiscounted	190,702		370,881
Less: Imputed interest	(11,047)		(83,750)
Present value of future minimum lease payments	$	179,655	$	287,131

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INTANGIBLE ASSETS

3 Months Ended

Mar. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

INTANGIBLE ASSETS

INTANGIBLE ASSETS

The following table summarizes information relating to the Company's acquired amortizable intangible assets: 

	As of March 31, 2021						As of December 31, 2020
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Estimated Useful Lives
Customer relationships	$	6,052,598	$	(3,618,697)	$	2,433,901	$	6,052,598	$	(3,478,742)	$	2,573,856	3 to 18 years
Trade names	1,081,083		(917,820)		163,263		1,081,083		(894,189)		186,894		2 to 5 years
Other amortizable intangibles	56,762		(37,909)		18,853		56,747		(36,381)		20,366		1 to 15 years
	$	7,190,443	$	(4,574,426)	$	2,616,017	$	7,190,428	$	(4,409,312)	$	2,781,116

Amortization expense for the three months ended March 31, 2021 and 2020 aggregated $165,114 and $201,099, respectively.

The carrying amount of indefinite-lived cable television franchises as of March 31, 2021 and December 31, 2020 was $13,068,017. The carrying amount of goodwill as of March 31, 2021 and December 31, 2020 was $8,160,566.

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DEBT

3 Months Ended

Mar. 31, 2021

Debt Disclosure [Abstract]

DEBT

DEBT

The following table provides details of the Company's outstanding debt:

		Interest Rate			March 31, 2021				December 31, 2020
Date Issued	Maturity Date				Principal Amount		Carrying Amount (a)		Principal Amount		Carrying Amount (a)
CSC Holdings Senior Notes:
November 15, 2011	November 15, 2021	6.750	%		$	1,000,000	$	992,691	$	1,000,000	$	989,917
September 27, 2012	September 15, 2022	5.875	%		649,024		621,617		649,024		617,333
May 23, 2014	June 1, 2024	5.250	%		750,000		700,419		750,000		697,041
October 18, 2018	April 1, 2028	7.500	%		4,118		4,112		4,118		4,112
November 27, 2018	April 1, 2028	7.500	%		1,045,882		1,044,462		1,045,882		1,044,424
July 10 and October 7, 2019	January 15, 2030	5.750	%		2,250,000		2,285,317		2,250,000		2,286,097
June 16, 2020	December 1, 2030	4.625	%		2,325,000		2,369,628		2,325,000		2,370,502
					8,024,024		8,018,246		8,024,024		8,009,426
CSC Holdings Senior Guaranteed Notes:
September 23, 2016	April 15, 2027	5.500	%		1,310,000		1,306,088		1,310,000		1,305,955
January 29, 2018	February 1, 2028	5.375	%		1,000,000		993,677		1,000,000		993,490
November 27, 2018	May 15, 2026	5.500	%		1,498,806		1,488,086		1,498,806		1,487,644
January 24, 2019	February 1, 2029	6.500	%		1,750,000		1,747,309		1,750,000		1,747,245
June 16, 2020	December 1, 2030	4.125	%		1,100,000		1,095,377		1,100,000		1,095,283
August 17, 2020	February 15, 2031	3.375	%		1,000,000		996,760		1,000,000		996,692
					7,658,806		7,627,297		7,658,806		7,626,309
CSC Holdings Restricted Group Credit Facility:
Revolving Credit Facility	(c)	2.358	%	(b)	575,000		566,720		625,000		616,027
Term Loan B	July 17, 2025	2.356	%		2,887,500		2,877,145		2,895,000		2,884,065
Incremental Term Loan B-3	January 15, 2026	2.356	%		1,249,500		1,245,315		1,252,688		1,248,293
Incremental Term Loan B-5	April 15, 2027	2.606	%		2,970,000		2,950,038		2,977,500		2,956,807
					7,682,000		7,639,218		7,750,188		7,705,192
Lightpath Senior Notes:
September 29, 2020	September 15, 2028	5.625	%		415,000		406,400		415,000		406,176
Lightpath Senior Secured Notes:
September 29, 2020	September 15, 2027	3.875	%		450,000		440,791		450,000		440,487
Lightpath Term Loan	November 30, 2027	3.750	%		598,500		581,879		600,000		582,808
Lightpath Revolving Credit Facility		(d)			—		—		—		—
					1,463,500		1,429,070		1,465,000		1,429,471
Collateralized indebtedness (see Note 11)					1,759,017		1,677,985		1,699,566		1,617,506
Finance lease obligations (see Note 8)					179,655		179,655		159,637		159,637
Notes payable and supply chain financing (e)					118,065		118,065		183,690		174,801
					26,885,067		26,689,536		26,940,911		26,722,342
Less: current portion of credit facility debt					(78,750)		(78,750)		(78,750)		(78,750)
Less: current portion of senior notes					(1,000,000)		(992,691)		(1,000,000)		(989,917)
Less: current portion of finance lease obligations					(76,123)		(76,123)		(63,454)		(63,454)
Less: current portion of notes payable and supply chain financing					(110,491)		(110,491)		(113,592)		(113,592)
					(1,265,364)		(1,258,055)		(1,255,796)		(1,245,713)
Long-term debt					$	25,619,703	$	25,431,481	$	25,685,115	$	25,476,629

(a)The carrying amount is net of the unamortized deferred financing costs and/or discounts/premiums and with respect to certain notes, a fair value adjustment resulting from the acquisitions of Cequel Corporation and Cablevision Systems Corporation.

(b)At March 31, 2021, $137,875 of the revolving credit facility was restricted for certain letters of credit issued on behalf of the Company and $1,762,125 of the facility was undrawn and available, subject to covenant limitations.

(c)The revolving credit facility of an aggregate principal amount of $2,475,000 matures in January 2024 and is priced at LIBOR plus 2.25%. In March 2021, a lender under the revolving credit facility extended the maturity date and reduced the interest rate on its aggregate principal amount of $200,000 which had an original maturity date of November 2021 and was priced at LIBOR plus 3.25%.

(d)There were no borrowings outstanding under the Lightpath Revolving Credit Facility which provides for commitments in an aggregate principal amount of $100,000. Borrowings bear interest at a rate per annum equal to the adjusted LIBOR rate or the alternate base rate, as applicable, plus the applicable margin, where the applicable margin is (i) with respect to any alternate base rate loan, 2.25% per annum and (ii) with respect to any eurodollar loan, 3.25% per annum.

(e)Includes $99,941 related to supply chain financing agreements that are required to be repaid within one year from the date of the respective agreement. The decrease in the principal amount at March 31, 2021 includes a $59,451 reclassification to collateralized indebtedness in connection with the maturity of a monetization contract related to the synthetic monetization closeout transaction in November 2019.

For financing purposes, the Company has two debt silos: CSC Holdings and Lightpath. The CSC Holdings silo is structured as a restricted group (the "Restricted Group") and an unrestricted group, which includes certain designated subsidiaries and investments (the "Unrestricted Group"). The Restricted Group is comprised of CSC Holdings and substantially all of its wholly-owned operating subsidiaries excluding Cablevision Lightpath LLC ("Lightpath"), a 50.01% owned subsidiary of the Company, which became an unrestricted subsidiary in September 2020. These Restricted Group subsidiaries are subject to the covenants and restrictions of the credit facility and indentures governing the notes issued by CSC Holdings. The Lightpath silo includes all of its operating subsidiaries which are subject to the covenants and restrictions of the credit facility and indentures governing the notes issued by Lightpath.

Both CSC Holdings and Lightpath's credit facilities agreements contains certain customary representations and warranties, affirmative covenants and events of default (including, among others, an event of default upon a change of control). If an event of default occurs, the lenders under the credit facilities will be entitled to take various actions, including the acceleration of amounts due under the credit facilities and all actions permitted to be taken by a secured creditor.

As of March 31, 2021, CSC Holdings and Cablevision Lightpath were in compliance with applicable financial covenants under their respective credit facilities and with applicable financial covenants under each respective indenture by which the senior guaranteed notes, senior secured notes and senior notes were issued.

Summary of Debt Maturities

The future maturities of debt payable by the Company under its various debt obligations outstanding as of March 31, 2021, including notes payable and collateralized indebtedness (see Note 11), but excluding finance lease obligations (see Note 8), are as follows:

2021	$	1,166,479
2022	734,667
2023	1,841,383
2024	1,403,889
2025	2,823,750
Thereafter	18,735,244

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DERIVATIVE CONTRACTS AND COLLATERALIZED INDEBTEDNESS

3 Months Ended

Mar. 31, 2021

Derivative Instruments and Hedging Activities Disclosure [Abstract]

DERIVATIVE CONTRACTS AND COLLATERALIZED INDEBTEDNESS

DERIVATIVE CONTRACTS AND COLLATERALIZED INDEBTEDNESS

Prepaid Forward Contracts

The Company has entered into various transactions to limit the exposure against equity price risk on its shares of Comcast Corporation ("Comcast") common stock.  The Company has monetized all of its stock holdings in Comcast

through the execution of prepaid forward contracts, collateralized by an equivalent amount of the respective underlying stock.  At maturity, the contracts provide for the option to deliver cash or shares of Comcast stock with a value determined by reference to the applicable stock price at maturity.  These contracts, at maturity, are expected to offset declines in the fair value of these securities below the hedge price per share while allowing the Company to retain upside appreciation from the hedge price per share to the relevant cap price.  

The Company received cash proceeds upon execution of the prepaid forward contracts discussed above which has been reflected as collateralized indebtedness in the accompanying consolidated balance sheets.  In addition, the Company separately accounts for the equity derivative component of the prepaid forward contracts.  These equity derivatives have not been designated as hedges for accounting purposes.  Therefore, the net fair values of the equity derivatives have been reflected in the accompanying consolidated balance sheets as an asset or liability and the net increases or decreases in the fair value of the equity derivative component of the prepaid forward contracts are included in gain (loss) on derivative contracts in the accompanying consolidated statements of operations.

All of the Company's monetization transactions are obligations of its wholly-owned subsidiaries that are not part of the Restricted Group; however, CSC Holdings has provided guarantees of the subsidiaries' ongoing contract payment expense obligations and potential payments that could be due as a result of an early termination event (as defined in the agreements).  If any one of these contracts was terminated prior to its scheduled maturity date, the Company would be obligated to repay the fair value of the collateralized indebtedness less the sum of the fair values of the underlying stock and equity collar, calculated at the termination date.  As of March 31, 2021, the Company did not have an early termination shortfall relating to any of these contracts.

The Company monitors the financial institutions that are counterparties to its equity derivative contracts.  All of the counterparties to such transactions carry investment grade credit ratings as of March 31, 2021.

In January 2021, the Company settled a collateralized debt and an equity derivative contract aggregating $185,102 upon maturity related to 5,337,750 shares of Comcast common stock held by us, with proceeds of $185,102 received in the current period pursuant to the synthetic monetization closeout transaction in November 2019. In connection with this transaction the Company recorded (i) a decrease in notes payable of $59,451 and (ii) an increase in collateralized debt of $59,451.

Interest Rate Swap Contracts

To manage interest rate risk, we have from time to time entered into interest rate swap contracts to adjust the proportion of total debt that is subject to variable and fixed interest rates. Such contracts effectively fix the borrowing rates on floating rate debt to provide an economic hedge against the risk of rising rates and/or effectively convert fixed rate borrowings to variable rates to permit the Company to realize lower interest expense in a declining interest rate environment. We monitor the financial institutions that are counterparties to our interest rate swap contracts and we only enter into interest rate swap contracts with financial institutions that are rated investment grade. All such contracts are carried at their fair market values on our consolidated balance sheet, with changes in fair value reflected in the consolidated statement of operations. As of March 31, 2021, the Company did not hold and has not issued derivative instruments for trading or speculative purposes.

The following represents the location of the assets and liabilities associated with the Company's derivative instruments within the consolidated balance sheets:

Derivatives Not Designated as Hedging Instruments	Balance Sheet Location	Fair Value at
		March 31, 2021		December 31, 2020
Asset Derivatives:
Interest rate swap contracts	Derivative contracts, short-term	$	8,252	$	5,132
Prepaid forward contracts	Derivative contracts, short-term	—		45,653
Interest rate swap contracts	Derivative contracts, long-term	—		4,774
		8,252		55,559
Liability Derivatives:
Prepaid forward contracts	Other current liabilities	—		(45,653)
Interest rate swap contracts	Other current liabilities	(12,861)		—
Prepaid forward contracts	Liabilities under derivative contracts, long-term	(301,418)		(247,853)
Interest rate swap contracts	Liabilities under derivative contracts, long-term	(170,984)		(275,297)
		$	(485,263)	$	(568,803)

The following table presents certain consolidated statement of operations data related to our derivative contracts and the underlying common stock:

	Three Months Ended March 31,
	2021		2020
Gain (loss) on derivative contracts related to change in the value of equity derivative contracts related to Comcast common stock	$	(53,565)	$	439,861
Change in the fair value of Comcast common stock included in gain (loss) on investments	73,453		(454,896)
Gain (loss) on interest rate swap contracts, net of a gain of $74,835 recorded in the 2020 period in connection with the early termination of the swap agreements discussed below	75,653		(54,832)

In March 2020, the Company terminated two swap agreements whereby the Company was paying a floating rate of interest and receiving a fixed rate of interest on an aggregate notional value of $1,500,000. These contracts were due to mature in May 2026. In connection with the early termination, the Company received cash of $74,835 which has been recorded in loss on interest swap contracts, net in our consolidated statement of operations and presented in operating activities in our consolidated statement of cash flows.

In addition, in March 2020, the Company executed amendments to two interest swap contracts that reduced the fixed rate of interest that the Company was paying on an aggregate notional value of $1,000,000 and extended the maturity date of the contracts to January 15, 2025 from January 15, 2022.

The following is a summary of interest rate swap contracts outstanding at March 31, 2021:

Trade Date	Maturity Date	Notional Amount		Company Pays	Company Receives
December 2018	January 2025	$	500,000	Fixed rate of 1.53%	Three-month LIBOR
December 2018	January 2022	500,000		Fixed rate of 2.733%	Three-month LIBOR
December 2018	January 2025	500,000		Fixed rate of 1.625%	Three-month LIBOR
December 2018	December 2026	750,000		Fixed rate of 2.9155%	Three-month LIBOR
December 2018	December 2026	750,000		Fixed rate of 2.9025%	Three-month LIBOR
March 2020	January 2025	500,000		Fixed rate of 1.458%	Three-month LIBOR
March 2020	January 2022	500,000		Three-month LIBOR	Fixed rate of 2.733%
April 2020	April 2021	2,850,000		Six-month LIBOR minus 0.5185%	One-month LIBOR

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FAIR VALUE MEASUREMENT

3 Months Ended

Mar. 31, 2021

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENT

FAIR VALUE MEASUREMENT

The fair value hierarchy is based on inputs to valuation techniques that are used to measure fair value that are either observable or unobservable.  Observable inputs reflect assumptions market participants would use in pricing an asset or liability based on market data obtained from independent sources while unobservable inputs reflect a reporting entity's pricing based upon their own market assumptions.  The fair value hierarchy consists of the following three levels:

•Level I - Quoted prices for identical instruments in active markets.

•Level II - Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations whose inputs are observable or whose significant value drivers are observable.

•Level III - Instruments whose significant value drivers are unobservable.

The following table presents the Company's financial assets and financial liabilities that are measured at fair value on a recurring basis and their classification under the fair value hierarchy:

	Fair Value Hierarchy	March 31, 2021		December 31, 2020
Assets:
Money market funds	Level I	$	150,965	$	50,236
Investment securities pledged as collateral	Level I	2,324,308		2,250,854
Prepaid forward contracts	Level II	—		45,653
Interest rate swap contracts	Level II	8,252		9,906
Liabilities:
Prepaid forward contracts	Level II	(301,418)		293,506
Interest rate swap contracts	Level II	(183,845)		275,297

The Company's money market funds which are classified as cash equivalents and investment securities pledged as collateral are classified within Level I of the fair value hierarchy because they are valued using quoted market prices.

The Company's derivative contracts and liabilities under derivative contracts on the Company's consolidated balance sheets are valued using market-based inputs to valuation models.  These valuation models require a variety of inputs, including contractual terms, market prices, yield curves, and measures of volatility.  When appropriate, valuations are adjusted for various factors such as liquidity, bid/offer spreads and credit risk considerations.  Such adjustments are generally based on available market evidence. Since model inputs can generally be verified and do not involve significant management judgment, the Company has concluded that these instruments should be classified within Level II of the fair value hierarchy.

Fair Value of Financial Instruments

The following methods and assumptions were used to estimate fair value of each class of financial instruments for which it is practicable to estimate:

Credit Facility Debt, Collateralized Indebtedness, Senior Notes, Senior Guaranteed Notes, Senior Secured Notes, Notes Payable, and Supply Chain Financing

The fair values of each of the Company's debt instruments are based on quoted market prices for the same or similar issues or on the current rates offered to the Company for instruments of the same remaining maturities. The fair value of notes payable is based primarily on the present value of the remaining payments discounted at the borrowing cost. The carrying value of outstanding amounts related to supply chain financing agreements approximates the fair value due to their short-term maturity (less than one year).

The carrying values, estimated fair values, and classification under the fair value hierarchy of the Company's financial instruments, excluding those that are carried at fair value in the accompanying consolidated balance sheets, are summarized below:

		March 31, 2021				December 31, 2020
	Fair Value Hierarchy	Carrying Amount (a)		Estimated Fair Value		Carrying Amount (a)		Estimated Fair Value
Credit facility debt	Level II	$	8,221,097	$	8,280,500	$	8,288,000	$	8,350,188
Collateralized indebtedness	Level II	1,677,985		1,753,986		1,617,506		1,692,724
Senior guaranteed notes and senior secured notes	Level II	8,068,088		8,363,231		8,066,796		8,567,858
Senior notes	Level II	8,424,646		8,734,561		8,415,602		9,024,990
Notes payable and supply chain financing	Level II	118,065		118,183		174,801		175,251
		$	26,509,881	$	27,250,461	$	26,562,705	$	27,811,011

(a)Amounts are net of unamortized deferred financing costs and discounts/premiums.

The fair value estimates related to the Company's debt instruments presented above are made at a specific point in time, based on relevant market information and information about the financial instrument.  These estimates are subjective in nature and involve uncertainties and matters of significant judgments and therefore cannot be determined with precision.  Changes in assumptions could significantly affect the estimates.

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INCOME TAXES

3 Months Ended

Mar. 31, 2021

Income Tax Disclosure [Abstract]

INCOME TAXES

INCOME TAXES

In general, the Company is required to use an estimated annual effective tax rate ("AETR") to measure the income tax expense or benefit recognized on a year to date basis in an interim period. In addition, certain items included in income tax expense as well as the tax impact of certain items included in pretax income must be treated as discrete items. The income tax expense or benefit associated with these discrete items is fully recognized in the interim period in which the items occur.

Altice USA

For the three months ended March 31, 2021, Altice USA recorded a tax expense of $112,007 on pre-tax income of $390,546, resulting in an effective tax rate that was higher than the U.S. statutory tax rate. The higher tax rate was due to the impact of certain non-deductible expenses and state tax expense.

For the three months ended March 31, 2020, Altice USA recorded a tax expense of $17,035 on pre-tax income of $15,497, resulting in an effective tax rate that was higher than the U.S. statutory tax rate. The higher tax rate was due to the impact of certain non-deductible expenses and certain state tax expense adjustments, partially offset by a benefit resulting from the Coronavirus Aid, Relief and Economic Security (“CARES Act”) enacted in March 2020.

CSC Holdings

For the three months ended March 31, 2021, CSC Holdings recorded a tax expense of $112,007 on pre-tax income of $390,546, resulting in an effective tax rate that was higher than the U.S. statutory tax rate. The higher tax rate was due to the impact of certain non-deductible expenses and state tax expense.

For the three months ended March 31, 2020, CSC Holdings recorded a tax expense of $5,029 on pre-tax income of $15,151, resulting in an effective tax rate that was higher than the U.S. statutory tax rate. The higher tax rate was due to the impact of certain non-deductible expenses and certain state tax expense adjustments, partially offset by a benefit resulting from the CARES Act.

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SHARE-BASED COMPENSATION

3 Months Ended

Mar. 31, 2021

Share-based Payment Arrangement [Abstract]

SHARE-BASED COMPENSATION

SHARE-BASED COMPENSATION

The following table presents share-based compensation expense recognized by the Company and unrecognized compensation costs:

	Share-Based Compensation				Unrecognized Compensation Costs
	Three Months Ended March 31,
	2021		2020		As of March 31, 2021
Carry Unit Plan	$	759	$	3,120	$	44
Awards issued pursuant to LTIP:
Stock Option Awards	24,223		20,349		123,543
Performance Stock Units	2,982		3,901		60,675
Restricted Awards	317		576		549
	$	28,281	$	27,946	$	184,811

Carry Unit Plan

The following table summarizes activity relating to the Company's Carry Unit Plan:

	Number of Time Vesting Awards	Weighted Average Grant Date Fair Value
Balance, December 31, 2020	6,875,000	$	3.41
Vested	(5,375,000)	3.80
Balance, March 31, 2021	1,500,000	$	1.99

The weighted average fair value per unit was $2.10 and $3.89, as of March 31, 2021 and December 31, 2020, respectively.

Stock Option Awards

The following table summarizes activity related to stock options granted to Company employees:

	Shares Under Option	Weighted Average Exercise Price Per Share		Weighted Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value (a)
Balance at December 31, 2020	37,062,146	$	25.52	8.69	$	457,608
Granted	409,478	34.78
Exercised	(104,365)	17.79
Forfeited	(360,778)	26.10
Balance at March 31, 2021	37,006,481	25.64		8.46	256,796
Options exercisable at March 31, 2021	3,141,750	$	17.55	6.78	$	47,070

(a)The aggregate intrinsic value is calculated as the difference between the exercise price and the closing price of Altice USA's Class A common stock at the respective date.

The total unrecognized compensation cost related to stock options is expected to be recognized over a weighted-average period of approximately 2.56 years.

The following weighted-average assumptions were used to calculate the fair values of stock option awards granted during the three months ended March 31, 2021:

Risk-free interest rate	0.93%
Expected life (in years)	6.18
Dividend yield	—%
Volatility	32.92%
Grant date fair value	$10.77

Performance Stock Unit Awards

As of March 31, 2021, the Company had 7,330,235 PSUs outstanding. The PSUs have a weighted average grant date fair value of $10.65 per unit. The total unrecognized compensation cost related to outstanding PSUs is expected to be recognized over a weighted-average period of approximately 4.85 years.

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AFFILIATE AND RELATED PARTY TRANSACTIONS

3 Months Ended

Mar. 31, 2021

Related Party Transactions [Abstract]

AFFILIATE AND RELATED PARTY TRANSACTIONS

AFFILIATE AND RELATED PARTY TRANSACTIONS

Affiliate and Related Party Transactions

Altice USA is controlled by Patrick Drahi who also controls Altice Europe N.V. ("Altice Europe") and its subsidiaries and other entities.

As the transactions discussed below were conducted between entities under common control by Mr. Drahi, amounts charged for certain services may not have represented amounts that might have been received or incurred if the transactions were based upon arm's length negotiations.

The following table summarizes the revenue and expenses related to services provided to or received from affiliates and related parties:

	Three Months Ended March 31,
	2021		2020
Revenue	$	3,406	$	3,488
Operating expenses:
Programming and other direct costs	$	(2,228)	$	(2,189)
Other operating expenses, net	(3,179)		(3,941)
Operating expenses, net	(5,407)		(6,130)
Net charges	$	(2,001)	$	(2,642)
Capital Expenditures	$	10,621	$	7,225

Revenue

The Company recognized revenue primarily from the sale of advertising to a subsidiary of Altice Europe and a foundation controlled by Patrick Drahi.

Programming and other direct costs

Programming and other direct costs include costs incurred by the Company for advertising services provided by a subsidiary of Altice Europe.

Other operating expenses, net

Other operating expenses primarily include charges for services provided by certain subsidiaries of Altice Europe and other related parties.

Capital Expenditures

Capital expenditures primarily include costs for equipment purchased and software development services provided by subsidiaries of Altice Europe.

Aggregate amounts that were due from and due to affiliates and related parties are summarized below:

	March 31,		December 31,
	2021		2020
Due from other affiliates and related parties	$	3,795	$	4,262
Due to:
Altice Europe	$	11,472	$	7,938
Other affiliates and related parties	1,226		600
	$	12,698	$	8,538

Amounts due from affiliates presented in the table above represent amounts paid by the Company on behalf of or for services provided to the respective related party. Amounts due to affiliates relate to the purchase of equipment and advertising services, as well as reimbursement for payments made on our behalf.

CSC Holdings

CSC Holdings made cash equity distribution payments to its parent aggregating $501,000, and $720,350 during the three months ended March 31, 2021 and 2020, respectively. CSC Holdings also recorded net non-cash equity contributions of $745 and $150,602 during the three months ended March 31, 2021 and 2020, respectively, which represent the non-cash settlement of intercompany balances with Altice USA. These balances primarily include amounts due to/due from Altice USA pursuant to a tax sharing agreement between the entities.

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COMMITMENTS AND CONTINGENCIES

3 Months Ended

Mar. 31, 2021

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES

Legal Matters

In the latter half of 2018, eight named plaintiffs, each on behalf of a putative class of stockholders who purchased Company common stock in Altice USA's IPO pursuant to the Registration Statement and Prospectus, filed complaints (seven in New York State Supreme Court, one in United States District Court for the Eastern District of New York). The lawsuits name as defendants Altice USA, Altice Europe, and Altice USA's directors, among others, and assert that all defendants violated Sections 11 and 12 of the Securities Act of 1933 (the "Securities Act") and that the individual defendants violated Section 15 of the Securities Act as control persons. In a consolidated amended complaint filed in the lawsuit in the Eastern District of New York, plaintiff also asserts violations of Section 10(b) of the Securities Act of 1934 ("34 Act"), Rule 10b-5 promulgated thereunder, and Section 20 of the 34 Act against Altice USA, Altice Europe, and certain individual directors. The facts underlying each case are substantively similar, with plaintiffs alleging that the Registration Statement and Prospectus misrepresented or omitted material facts relating to the negative performance of Altice France and Altice Portugal, the disclosure of which in November 2017 negatively impacted the value of Altice USA’s stock. In June of 2019, plaintiffs in the New York State action filed a consolidated amended complaint, which the Company moved to dismiss in July of 2019. The Company moved to dismiss the complaint in the Eastern District of New York in October 2019. On June 26, 2020, the state Court granted the Company’s motion to dismiss. Plaintiffs in the New York State action filed a notice of appeal on July 21, 2020 and moved for leave to file an amended complaint on September 4, 2020. On September 23, 2020, the federal district court granted the Company’s motion to dismiss with leave for plaintiff to refile. On October 7, 2020, plaintiffs filed a second amended complaint in the Eastern District of New York. Following negotiations with the state and federal court plaintiffs, the parties executed a Memorandum of Understanding on February 12, 2021 to settle the litigation. That settlement remains subject to final documentation and court approval.

On June 23, 2020, a purported stockholder of the Company filed a complaint in the Court of Chancery of the State of Delaware, derivatively on behalf of the Company, against Patrick Drahi, Next Alt S.A.R.L., and those directors of the Company who are members of the Compensation Committee (collectively, the “Director Defendants”). The Company is also named as a nominal defendant in the complaint. The complaint alleges that the Director Defendants breached their fiduciary duties to the Company’s stockholders, and wasted corporate assets, by approving certain equity grants for Patrick Drahi. The complaint seeks rescission of the equity awards, monetary damages, and costs and disbursements for the plaintiff. On October 15, 2020, the Director Defendants answered the complaint and the Company filed a general denial of liability.

The Company intends to vigorously defend these lawsuits. Although the outcome of the matter cannot be predicted and the impact of the final resolution of these matters on the Company’s results of operations in any particular subsequent reporting period is not known at this time, management does not believe that the ultimate resolution of these matters will have a material adverse effect on the operations or financial position of the Company or the ability of the Company to meet its financial obligations as they become due.

On November 6, 2018, Sprint Communications Company L.P ("Sprint") filed a complaint in the U.S. District Court for the District of Delaware alleging that the Company infringes Sprint’s patents purportedly by providing Voice over Internet Protocol ("VoIP") services. On December 3, 2018, Sprint filed a second complaint alleging that the Company infringes Sprint’s patents purportedly by providing certain VOD related services. The lawsuits are part of a pattern of litigation that was initiated as far back as 2005 by Sprint against numerous broadband and telecommunications providers, which has resulted in judgments and settlements of significant value for Sprint. The Company intends to vigorously defend the lawsuits. Although the outcome of the matter cannot be predicted and the impact of the final resolution of this matter on the Company’s results of operations in any particular subsequent reporting period is not known at this time, management does not believe that the ultimate resolution of the matter will have a material adverse effect on the operations or financial position of the Company or the ability of the Company to meet its financial obligations as they become due, but it could be material to the Company’s consolidated results of operations or cash flows for any one period.

The Company receives notices from third parties and, in some cases, is named as a defendant in certain lawsuits claiming infringement of various patents relating to various aspects of the Company's businesses. In certain of these cases other industry participants are also defendants. In certain of these cases the Company expects that any potential liability would be the responsibility of the Company's equipment vendors pursuant to applicable contractual indemnification provisions.

In the event that the Company is found to infringe on any patent rights, the Company may be subject to substantial damages and/or an injunction that could require the Company or its vendors to modify certain products and services the Company offers to its subscribers, as well as enter into royalty or license agreements with respect to the patents at issue. The Company believes that the claims are without merit, but is unable to predict the outcome of these matters or reasonably estimate a range of possible loss.

In addition to the matters discussed above, the Company is party to various lawsuits, disputes and investigations, some of which may involve claims for substantial damages, fines or penalties. Although the outcome of these other matters cannot be predicted and the impact of the final resolution of these other matters on the Company's results of operations in a particular subsequent reporting period is not known, management does not believe that the resolution of these other lawsuits will have a material adverse effect on the financial position of the Company or the ability of the Company to meet its financial obligations as they become due.

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Subsequent Events	3 Months Ended
	Mar. 31, 2021
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTS In April 2021, the Company completed its acquisition of the cable assets of Morris Broadband, LLC in North Carolina for $310,000, subject to certain closing adjustments as set forth in the asset purchase agreement.

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BASIS OF PRESENTATION (Policies)

3 Months Ended

Mar. 31, 2021

Accounting Policies [Abstract]

Reclassifications

Reclassifications

Certain reclassifications have been made to the 2020 financial statements to conform to the 2021 presentation.

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Revenue Recognition and Deferred Revenue (Policies)

3 Months Ended

Mar. 31, 2021

Revenue from Contract with Customer [Abstract]

Revenue Recognition

Customer Contract Costs

Deferred enterprise commission costs are included in other noncurrent assets in the consolidated balance sheets and totaled $18,864 and $19,959 as of March 31, 2021 and December 31, 2020, respectively.

A significant portion of our revenue is derived from residential and SMB customer contracts which are month-to month. As such, the amount of revenue related to unsatisfied performance obligations is not necessarily indicative of the future revenue to be recognized from our existing customer base. Contracts with enterprise customers generally range from three years to five years, and services may only be terminated in accordance with the contractual terms.

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COMMON STOCK (Tables)

3 Months Ended

Mar. 31, 2021

Accounting Policies [Abstract]

Schedule of Stock by Class

	Shares of Common Stock Outstanding
	Class A Common Stock	Class B Common Stock
Balance at December 31, 2020	290,573,672	185,895,903
Conversion of Class B common stock to Class A common stock	97,510	(97,510)
Option exercises	104,365	—
Repurchase and retirement of Class A common shares in connection with the Company's share repurchase plan (discussed above)	(15,179,697)	—
Treasury shares reissued	583,164	—
Balance at March 31, 2021	276,179,014	185,798,393

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Revenue Recognition and Deferred Revenue (Tables)

3 Months Ended

Mar. 31, 2021

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table presents the composition of revenue:

	Three Months Ended March 31,
	2021		2020
Broadband	$	970,571	$	885,529
Video	905,834		947,061
Telephony	106,981		125,030
Residential revenue	1,983,386		1,957,620
Business services and wholesale revenue	367,216		364,530
News and advertising	105,070		105,540
Mobile	19,235		18,356
Other	3,914		4,210
Total revenue	$	2,478,821	$	2,450,256

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Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2021

Earnings Per Share [Abstract]

Schedule of Weighted Average Number of Shares [Table Text Block]

The following table presents a reconciliation of weighted average shares used in the calculations of the basic and diluted net income per share attributable to Altice USA stockholders for the three months ended March 31, 2021 and 2020:

	Three Months Ended March 31,
	2021	2020
	(in thousands)
Basic weighted average shares outstanding	469,233	621,414
Effect of dilution:
Stock options	6,170	—
Restricted stock	45	—
Diluted weighted average shares outstanding	475,448	621,414
Weighted average shares excluded from diluted weighted average shares outstanding:
Anti-dilutive shares	495	22,525
Performance stock units and restricted stock whose performance metrics have not been achieved.	8,748	8,981

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SUPPLEMENTAL CASH FLOW INFORMATION (Tables)

3 Months Ended

Mar. 31, 2021

Supplemental Cash Flow Elements [Abstract]

Non-Cash Investing and Financing Activities and Other Supplemental Data

The Company's non-cash investing and financing activities and other supplemental data were as follows:

	Three Months Ended March 31,
	2021		2020
Non-Cash Investing and Financing Activities:
Altice USA and CSC Holdings:
Property and equipment accrued but unpaid	$	266,995	$	219,889
Unsettled purchases of shares of Altice USA, Inc. Class A common stock, pursuant to a share repurchase program	18,942		23,993
Right-of-use assets acquired in exchange for finance lease obligations	38,348		27,674
CSC Holdings:
Distributions to parent	745		150,602
Supplemental Data:
Altice USA:
Cash interest paid	310,878		474,268
Income taxes paid, net	9,727		1,195
CSC Holdings:
Cash interest paid	310,878		474,268
Income taxes paid, net	9,727		1,195

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RESTRUCTURING AND OTHER EXPENSE (Tables)

3 Months Ended

Mar. 31, 2021

Restructuring and Related Activities [Abstract]

Restructuring Cost Activity

The Company's restructuring and other expense is comprised of the following:

	Three Months Ended March 31,
	2021		2020
Contractual payments for terminated employees	$	1,856	$	3,121
Facility realignment costs	324		1,979
Impairment of right-of-use operating lease assets	405		1,705
Transaction costs related to certain transactions not related to the Company's operations	624		489
	$	3,209	$	7,294

As of March 31, 2021, the outstanding amounts due to terminated employees of $13,185 and the outstanding amounts related to facility realignment costs of $5,503 are reflected in other current and other long-term liabilities in the Company's consolidated balance sheet.

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LEASES (Tables)

3 Months Ended

Mar. 31, 2021

Leases [Abstract]

Lesee, Operating Lease And Finance Lease, Liability

Balance sheet information related to our leases is presented below:

	Balance Sheet location	March 31, 2021		December 31, 2020
Operating leases:
Right-of-use lease assets	Right-of-use operating lease assets	$	234,358	$	241,342
Right-of-use lease liability, current	Other current liabilities	38,373		38,296
Right-of-use lease liability, long-term	Right-of-use operating lease liability	248,758		257,424
Finance leases:
Right-of-use lease assets	Property, plant and equipment	195,354		170,155
Right-of-use lease liability, current	Current portion of long-term debt	76,123		63,454
Right-of-use lease liability, long-term	Long-term debt	103,532		96,183

Lease, Cost

The following provides details of the Company's lease expense:

	Three Months Ended March 31,
	2021		2020
Operating lease expense, net	$	14,307	$	15,004
Finance lease expense:
Amortization of assets	11,574		4,460
Interest on lease liabilities	2,101		1,027
Total finance lease expense	13,675		5,487
	$	27,982	$	20,491

Lessee, Topic 842, Other Lease Information

Other information related to leases is presented below:

	As of March 31,
	2021			2020
Right-of-use assets acquired in exchange for operating lease obligations	$	2,865		$	12,875
Cash Paid For Amounts Included In Measurement of Liabilities:
Operating cash flows related to finance leases	2,101			1,027
Operating cash flows related to operating leases	15,457			16,659
Weighted Average Remaining Lease Term:
Operating leases	8.8 years			9.3 years
Finance leases	2.4 years			3.1 years
Weighted Average Discount Rate:
Operating leases	5.60		%	5.90		%
Finance leases	5.16		%	5.50		%

Finance Lease, Liability, Maturity

The minimum future annual payments under non-cancellable leases during the next five years and thereafter, at rates now in force, are as follows:

	Finance leases		Operating leases
2021 (excluding the three months ended March 31, 2021)	$	62,394	$	30,274
2022	78,946		52,862
2023	43,839		45,139
2024	5,231		41,448
2025	292		33,458
Thereafter	—		167,700
Total future minimum lease payments, undiscounted	190,702		370,881
Less: Imputed interest	(11,047)		(83,750)
Present value of future minimum lease payments	$	179,655	$	287,131

Lessee, Operating Lease, Liability, Maturity

The minimum future annual payments under non-cancellable leases during the next five years and thereafter, at rates now in force, are as follows:

	Finance leases		Operating leases
2021 (excluding the three months ended March 31, 2021)	$	62,394	$	30,274
2022	78,946		52,862
2023	43,839		45,139
2024	5,231		41,448
2025	292		33,458
Thereafter	—		167,700
Total future minimum lease payments, undiscounted	190,702		370,881
Less: Imputed interest	(11,047)		(83,750)
Present value of future minimum lease payments	$	179,655	$	287,131

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INTANGIBLE ASSETS (Tables)

3 Months Ended

Mar. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Acquired Finite-Lived Intangible Assets by Major Class

The following table summarizes information relating to the Company's acquired amortizable intangible assets: 

	As of March 31, 2021						As of December 31, 2020
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Estimated Useful Lives
Customer relationships	$	6,052,598	$	(3,618,697)	$	2,433,901	$	6,052,598	$	(3,478,742)	$	2,573,856	3 to 18 years
Trade names	1,081,083		(917,820)		163,263		1,081,083		(894,189)		186,894		2 to 5 years
Other amortizable intangibles	56,762		(37,909)		18,853		56,747		(36,381)		20,366		1 to 15 years
	$	7,190,443	$	(4,574,426)	$	2,616,017	$	7,190,428	$	(4,409,312)	$	2,781,116

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DEBT (Tables)

3 Months Ended

Mar. 31, 2021

Debt Disclosure [Abstract]

Schedule of Line of Credit Facilities

The following table provides details of the Company's outstanding debt:

		Interest Rate			March 31, 2021				December 31, 2020
Date Issued	Maturity Date				Principal Amount		Carrying Amount (a)		Principal Amount		Carrying Amount (a)
CSC Holdings Senior Notes:
November 15, 2011	November 15, 2021	6.750	%		$	1,000,000	$	992,691	$	1,000,000	$	989,917
September 27, 2012	September 15, 2022	5.875	%		649,024		621,617		649,024		617,333
May 23, 2014	June 1, 2024	5.250	%		750,000		700,419		750,000		697,041
October 18, 2018	April 1, 2028	7.500	%		4,118		4,112		4,118		4,112
November 27, 2018	April 1, 2028	7.500	%		1,045,882		1,044,462		1,045,882		1,044,424
July 10 and October 7, 2019	January 15, 2030	5.750	%		2,250,000		2,285,317		2,250,000		2,286,097
June 16, 2020	December 1, 2030	4.625	%		2,325,000		2,369,628		2,325,000		2,370,502
					8,024,024		8,018,246		8,024,024		8,009,426
CSC Holdings Senior Guaranteed Notes:
September 23, 2016	April 15, 2027	5.500	%		1,310,000		1,306,088		1,310,000		1,305,955
January 29, 2018	February 1, 2028	5.375	%		1,000,000		993,677		1,000,000		993,490
November 27, 2018	May 15, 2026	5.500	%		1,498,806		1,488,086		1,498,806		1,487,644
January 24, 2019	February 1, 2029	6.500	%		1,750,000		1,747,309		1,750,000		1,747,245
June 16, 2020	December 1, 2030	4.125	%		1,100,000		1,095,377		1,100,000		1,095,283
August 17, 2020	February 15, 2031	3.375	%		1,000,000		996,760		1,000,000		996,692
					7,658,806		7,627,297		7,658,806		7,626,309
CSC Holdings Restricted Group Credit Facility:
Revolving Credit Facility	(c)	2.358	%	(b)	575,000		566,720		625,000		616,027
Term Loan B	July 17, 2025	2.356	%		2,887,500		2,877,145		2,895,000		2,884,065
Incremental Term Loan B-3	January 15, 2026	2.356	%		1,249,500		1,245,315		1,252,688		1,248,293
Incremental Term Loan B-5	April 15, 2027	2.606	%		2,970,000		2,950,038		2,977,500		2,956,807
					7,682,000		7,639,218		7,750,188		7,705,192
Lightpath Senior Notes:
September 29, 2020	September 15, 2028	5.625	%		415,000		406,400		415,000		406,176
Lightpath Senior Secured Notes:
September 29, 2020	September 15, 2027	3.875	%		450,000		440,791		450,000		440,487
Lightpath Term Loan	November 30, 2027	3.750	%		598,500		581,879		600,000		582,808
Lightpath Revolving Credit Facility		(d)			—		—		—		—
					1,463,500		1,429,070		1,465,000		1,429,471
Collateralized indebtedness (see Note 11)					1,759,017		1,677,985		1,699,566		1,617,506
Finance lease obligations (see Note 8)					179,655		179,655		159,637		159,637
Notes payable and supply chain financing (e)					118,065		118,065		183,690		174,801
					26,885,067		26,689,536		26,940,911		26,722,342
Less: current portion of credit facility debt					(78,750)		(78,750)		(78,750)		(78,750)
Less: current portion of senior notes					(1,000,000)		(992,691)		(1,000,000)		(989,917)
Less: current portion of finance lease obligations					(76,123)		(76,123)		(63,454)		(63,454)
Less: current portion of notes payable and supply chain financing					(110,491)		(110,491)		(113,592)		(113,592)
					(1,265,364)		(1,258,055)		(1,255,796)		(1,245,713)
Long-term debt					$	25,619,703	$	25,431,481	$	25,685,115	$	25,476,629

(a)The carrying amount is net of the unamortized deferred financing costs and/or discounts/premiums and with respect to certain notes, a fair value adjustment resulting from the acquisitions of Cequel Corporation and Cablevision Systems Corporation.

(b)At March 31, 2021, $137,875 of the revolving credit facility was restricted for certain letters of credit issued on behalf of the Company and $1,762,125 of the facility was undrawn and available, subject to covenant limitations.

(c)The revolving credit facility of an aggregate principal amount of $2,475,000 matures in January 2024 and is priced at LIBOR plus 2.25%. In March 2021, a lender under the revolving credit facility extended the maturity date and reduced the interest rate on its aggregate principal amount of $200,000 which had an original maturity date of November 2021 and was priced at LIBOR plus 3.25%.

(d)There were no borrowings outstanding under the Lightpath Revolving Credit Facility which provides for commitments in an aggregate principal amount of $100,000. Borrowings bear interest at a rate per annum equal to the adjusted LIBOR rate or the alternate base rate, as applicable, plus the applicable margin, where the applicable margin is (i) with respect to any alternate base rate loan, 2.25% per annum and (ii) with respect to any eurodollar loan, 3.25% per annum.

(e)Includes $99,941 related to supply chain financing agreements that are required to be repaid within one year from the date of the respective agreement. The decrease in the principal amount at March 31, 2021 includes a $59,451 reclassification to collateralized indebtedness in connection with the maturity of a monetization contract related to the synthetic monetization closeout transaction in November 2019.

Schedule of Maturities of Long-term Debt

The future maturities of debt payable by the Company under its various debt obligations outstanding as of March 31, 2021, including notes payable and collateralized indebtedness (see Note 11), but excluding finance lease obligations (see Note 8), are as follows:

2021	$	1,166,479
2022	734,667
2023	1,841,383
2024	1,403,889
2025	2,823,750
Thereafter	18,735,244

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DERIVATIVE CONTRACTS AND COLLATERALIZED INDEBTEDNESS (Tables)

3 Months Ended

Mar. 31, 2021

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Interest Rate Derivatives

The following represents the location of the assets and liabilities associated with the Company's derivative instruments within the consolidated balance sheets:

Derivatives Not Designated as Hedging Instruments	Balance Sheet Location	Fair Value at
		March 31, 2021		December 31, 2020
Asset Derivatives:
Interest rate swap contracts	Derivative contracts, short-term	$	8,252	$	5,132
Prepaid forward contracts	Derivative contracts, short-term	—		45,653
Interest rate swap contracts	Derivative contracts, long-term	—		4,774
		8,252		55,559
Liability Derivatives:
Prepaid forward contracts	Other current liabilities	—		(45,653)
Interest rate swap contracts	Other current liabilities	(12,861)		—
Prepaid forward contracts	Liabilities under derivative contracts, long-term	(301,418)		(247,853)
Interest rate swap contracts	Liabilities under derivative contracts, long-term	(170,984)		(275,297)
		$	(485,263)	$	(568,803)

Location of Assets and Liabilities Associated With Derivative Instruments Within the Condensed Consolidated Balance Sheets

The following table presents certain consolidated statement of operations data related to our derivative contracts and the underlying common stock:

	Three Months Ended March 31,
	2021		2020
Gain (loss) on derivative contracts related to change in the value of equity derivative contracts related to Comcast common stock	$	(53,565)	$	439,861
Change in the fair value of Comcast common stock included in gain (loss) on investments	73,453		(454,896)
Gain (loss) on interest rate swap contracts, net of a gain of $74,835 recorded in the 2020 period in connection with the early termination of the swap agreements discussed below	75,653		(54,832)

In March 2020, the Company terminated two swap agreements whereby the Company was paying a floating rate of interest and receiving a fixed rate of interest on an aggregate notional value of $1,500,000. These contracts were due to mature in May 2026. In connection with the early termination, the Company received cash of $74,835 which has been recorded in loss on interest swap contracts, net in our consolidated statement of operations and presented in operating activities in our consolidated statement of cash flows.

In addition, in March 2020, the Company executed amendments to two interest swap contracts that reduced the fixed rate of interest that the Company was paying on an aggregate notional value of $1,000,000 and extended the maturity date of the contracts to January 15, 2025 from January 15, 2022.

Schedule of Collateralized Debt Settlement

The following is a summary of interest rate swap contracts outstanding at March 31, 2021:

Trade Date	Maturity Date	Notional Amount		Company Pays	Company Receives
December 2018	January 2025	$	500,000	Fixed rate of 1.53%	Three-month LIBOR
December 2018	January 2022	500,000		Fixed rate of 2.733%	Three-month LIBOR
December 2018	January 2025	500,000		Fixed rate of 1.625%	Three-month LIBOR
December 2018	December 2026	750,000		Fixed rate of 2.9155%	Three-month LIBOR
December 2018	December 2026	750,000		Fixed rate of 2.9025%	Three-month LIBOR
March 2020	January 2025	500,000		Fixed rate of 1.458%	Three-month LIBOR
March 2020	January 2022	500,000		Three-month LIBOR	Fixed rate of 2.733%
April 2020	April 2021	2,850,000		Six-month LIBOR minus 0.5185%	One-month LIBOR

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FAIR VALUE MEASUREMENT (Tables)

3 Months Ended

Mar. 31, 2021

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table presents the Company's financial assets and financial liabilities that are measured at fair value on a recurring basis and their classification under the fair value hierarchy:

	Fair Value Hierarchy	March 31, 2021		December 31, 2020
Assets:
Money market funds	Level I	$	150,965	$	50,236
Investment securities pledged as collateral	Level I	2,324,308		2,250,854
Prepaid forward contracts	Level II	—		45,653
Interest rate swap contracts	Level II	8,252		9,906
Liabilities:
Prepaid forward contracts	Level II	(301,418)		293,506
Interest rate swap contracts	Level II	(183,845)		275,297

Schedule of Carrying Values and Estimated Fair Values of Debt Instruments

		March 31, 2021				December 31, 2020
	Fair Value Hierarchy	Carrying Amount (a)		Estimated Fair Value		Carrying Amount (a)		Estimated Fair Value
Credit facility debt	Level II	$	8,221,097	$	8,280,500	$	8,288,000	$	8,350,188
Collateralized indebtedness	Level II	1,677,985		1,753,986		1,617,506		1,692,724
Senior guaranteed notes and senior secured notes	Level II	8,068,088		8,363,231		8,066,796		8,567,858
Senior notes	Level II	8,424,646		8,734,561		8,415,602		9,024,990
Notes payable and supply chain financing	Level II	118,065		118,183		174,801		175,251
		$	26,509,881	$	27,250,461	$	26,562,705	$	27,811,011

(a)Amounts are net of unamortized deferred financing costs and discounts/premiums.

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SHARE-BASED COMPENSATION (Tables)

3 Months Ended

Mar. 31, 2021

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Activity for Shares

The following table summarizes activity relating to the Company's Carry Unit Plan:

	Number of Time Vesting Awards	Weighted Average Grant Date Fair Value
Balance, December 31, 2020	6,875,000	$	3.41
Vested	(5,375,000)	3.80
Balance, March 31, 2021	1,500,000	$	1.99

Share-based Compensation, Stock Options, Activity

The following table summarizes activity related to stock options granted to Company employees:

	Shares Under Option	Weighted Average Exercise Price Per Share		Weighted Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value (a)
Balance at December 31, 2020	37,062,146	$	25.52	8.69	$	457,608
Granted	409,478	34.78
Exercised	(104,365)	17.79
Forfeited	(360,778)	26.10
Balance at March 31, 2021	37,006,481	25.64		8.46	256,796
Options exercisable at March 31, 2021	3,141,750	$	17.55	6.78	$	47,070

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

Risk-free interest rate	0.93%
Expected life (in years)	6.18
Dividend yield	—%
Volatility	32.92%
Grant date fair value	$10.77

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AFFILIATE AND RELATED PARTY TRANSACTIONS (Tables)

3 Months Ended

Mar. 31, 2021

Related Party Transactions [Abstract]

Summary of related party transactions

The following table summarizes the revenue and expenses related to services provided to or received from affiliates and related parties:

	Three Months Ended March 31,
	2021		2020
Revenue	$	3,406	$	3,488
Operating expenses:
Programming and other direct costs	$	(2,228)	$	(2,189)
Other operating expenses, net	(3,179)		(3,941)
Operating expenses, net	(5,407)		(6,130)
Net charges	$	(2,001)	$	(2,642)
Capital Expenditures	$	10,621	$	7,225

Aggregate amounts that were due from and due to affiliates and related parties are summarized below:

	March 31,		December 31,
	2021		2020
Due from other affiliates and related parties	$	3,795	$	4,262
Due to:
Altice Europe	$	11,472	$	7,938
Other affiliates and related parties	1,226		600
	$	12,698	$	8,538

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DESCRIPTION OF BUSINESS AND RELATED MATTERS (Details)	3 Months Ended
	Mar. 31, 2021 segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of segments	1

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COMMON STOCK (Details) - USD ($) $ in Thousands	3 Months Ended		34 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2021	Nov. 19, 2020	Jul. 31, 2019	Jun. 08, 2018
Common Stock Outstanding Roll Forward [Roll Forward]
Repurchase and retirement of Class A common shares in connection with the Company's share repurchase plan (discussed above)	(15,179,697)		(277,093,742)
Ending balance common stock, shares outstanding (in shares)	461,977,407		461,977,407
Value of shares repurchased	$ 522,673	$ 749,998	$ 7,526,443
Availability remaining under its stock repurchase program				$ 1,473,557
Common stock, shares outstanding (in shares)	461,977,407		461,977,407	461,977,407
Share repurchase authorized					$ 2,000,000		$ 2,000,000
Total shares authorized for repurchase
Common Stock Outstanding Roll Forward [Roll Forward]
Share repurchase authorized				$ 9,000,000
2019 Share Repurchase Authorization [Member]
Common Stock Outstanding Roll Forward [Roll Forward]
Share repurchase authorized						$ 5,000,000
Common Class A
Common Stock Outstanding Roll Forward [Roll Forward]
Common Stock, Shares, Outstanding, Beginning Balance	290,573,672
Conversion of Class B common stock to Class A common stock	97,510
Option exercises	104,365
Repurchase and retirement of Class A common shares in connection with the Company's share repurchase plan (discussed above)	(15,179,697)
Treasury shares reissued	583,164
Ending balance common stock, shares outstanding (in shares)	276,179,014		276,179,014
Common stock, shares outstanding (in shares)	276,179,014		276,179,014	276,179,014
Number of shares of common stock converted (in shares)	97,510
Common Class B
Common Stock Outstanding Roll Forward [Roll Forward]
Common Stock, Shares, Outstanding, Beginning Balance	185,895,903
Conversion of Class B common stock to Class A common stock	(97,510)
Option exercises	0
Repurchase and retirement of Class A common shares in connection with the Company's share repurchase plan (discussed above)	0
Ending balance common stock, shares outstanding (in shares)	185,798,393		185,798,393
Common stock, shares outstanding (in shares)	185,798,393		185,798,393	185,798,393
Number of shares of common stock converted (in shares)	(97,510)

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Revenue Recognition and Deferred Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Contract Assets and Liabilities [Line Items]
Revenues	$ 2,478,821	$ 2,450,256
Contract assets	$ 18,864		$ 19,959
Customer Contracts | Minimum
Contract Assets and Liabilities [Line Items]
Finite-lived intangible asset, useful life	3 years
Customer Contracts | Maximum
Contract Assets and Liabilities [Line Items]
Finite-lived intangible asset, useful life	5 years
Broadband [Member]
Contract Assets and Liabilities [Line Items]
Revenues	$ 970,571	885,529
Pay TV [Member]
Contract Assets and Liabilities [Line Items]
Revenues	905,834	947,061
Telephony [Member]
Contract Assets and Liabilities [Line Items]
Revenues	106,981	125,030
Total Residential Revenue
Contract Assets and Liabilities [Line Items]
Revenues	1,983,386	1,957,620
Business Services and Wholesale [Member]
Contract Assets and Liabilities [Line Items]
Revenues	367,216	364,530
Advertising and News [Member]
Contract Assets and Liabilities [Line Items]
Revenues	105,070	105,540
Mobile [Member]
Contract Assets and Liabilities [Line Items]
Revenues	19,235	18,356
Products And Services, Other [Member]
Contract Assets and Liabilities [Line Items]
Revenues	3,914	4,210
Franchise [Member]
Contract Assets and Liabilities [Line Items]
Franchise fees and other taxes and fees	$ 66,056	$ 64,910

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Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Basic weighted average common shares (in thousands)	469,233	621,414
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	6,170	0
Diluted weighted average common shares (in thousands)	475,448	621,414
Anti-dilutive shares	495	22,525
Performance stock units and restricted stock whose performance metrics have not been achieved.	8,748	8,981
Restricted Stock Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	45	0

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SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Non-Cash Investing and Financing Activities:
Property and equipment accrued but unpaid	$ 266,995	$ 219,889
Unsettled purchases of shares of Altice USA, Inc. Class A common stock, pursuant to a share repurchase program	18,942	23,993
Right-of-use assets acquired in exchange for finance lease obligations	38,348	27,674
Distributions to parent	745	150,602
Supplemental Data:
Cash interest paid	310,878	474,268
Income taxes paid, net	9,727	1,195
CSC Holdings
Supplemental Data:
Cash interest paid	310,878	474,268
Income taxes paid, net	$ 9,727	$ 1,195

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RESTRUCTURING AND OTHER EXPENSE (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Restructuring Reserve [Roll Forward]
Restructuring Charges	$ 3,209	$ 7,294
Restructuring expense relating to right of use operating leases	405	1,705
Transaction costs	624	489
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Restructuring Charges	1,856	3,121
Accrual, ending balance	13,185
Facility Realignment and Other Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring Charges	324	$ 1,979
Accrual, ending balance	$ 5,503

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LEASES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Leases [Abstract]
Right-of-use operating lease assets	$ 234,358		$ 241,342
Operating Lease, Liability, Current	38,373		38,296
Operating Lease, Liability, Noncurrent	248,758		257,424
Finance Lease, Right-of-Use Asset	195,354		170,155
Finance Lease, Liability, Current	76,123		63,454
Finance Lease, Liability, Noncurrent	103,532		$ 96,183
Operating Lease Expense, Net	14,307	$ 15,004
Finance Lease, Right-of-Use Asset, Amortization	11,574	4,460
Finance Lease, Interest Expense	2,101	1,027
Finance Lease, Cost	13,675	5,487
Finance And Operating Lease, Lessee Expense	27,982	20,491
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	2,865	12,875
Finance Lease, Interest Payment on Liability	2,101	1,027
Operating Lease, Payments	$ 15,457	$ 16,659
Operating Lease, Weighted Average Remaining Lease Term	8 years 9 months 18 days	9 years 3 months 18 days
Finance Lease, Weighted Average Remaining Lease Term	2 years 4 months 24 days	3 years 1 month 6 days
Operating Lease, Weighted Average Discount Rate, Percent	5.60%	5.90%
Finance Lease, Weighted Average Discount Rate, Percent	5.16%	5.50%

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LEASES (Details) $ in Thousands	Mar. 31, 2021 USD ($)
Finance Lease, Liability, Payments, Due Next Twelve Months	$ 62,394
Finance Lease, Liability, Payments, Due Year Two	78,946
Finance Lease, Liability, Payments, Due Year Three	43,839
Finance Lease, Liability, Payments, Due Year Four	5,231
Finance Lease, Liability, Payments, Due Year Five	292
Finance Lease, Liability, Payments, Due after Year Five	0
Finance Lease, Liability, Payment, Due, Total	190,702
Finance Leases, Future Minimum Payments, Interest Included in Payments	11,047
Finance Leases, Future Minimum Payments, Present Value of Net Minimum Payments	179,655
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	30,274
Lessee, Operating Lease, Liability, Payments, Due Year Two	52,862
Lessee, Operating Lease, Liability, Payments, Due Year Three	45,139
Lessee, Operating Lease, Liability, Payments, Due Year Four	41,448
Lessee, Operating Lease, Liability, Payments, Due Year Five	33,458
Lessee, Operating Lease, Liability, Payments, Due after Year Five	167,700
Lessee, Operating Lease, Liability, Payments, Due, Total	370,881
Operating Leases, Future Minimum Payments, Interest Included in Payments	83,750
Operating Leases, Future Minimum Payments, Present Value of Net Minimum Payments	$ 287,131

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INTANGIBLE ASSETS - Summary of Acquired Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 7,190,443	$ 7,190,428
Accumulated Amortization	(4,574,426)	(4,409,312)
Net Carrying Amount	2,616,017	2,781,116
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	6,052,598	6,052,598
Accumulated Amortization	(3,618,697)	(3,478,742)
Net Carrying Amount	2,433,901	2,573,856
Trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,081,083	1,081,083
Accumulated Amortization	(917,820)	(894,189)
Net Carrying Amount	163,263	186,894
Other amortizable intangibles
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	56,762	56,747
Accumulated Amortization	(37,909)	(36,381)
Net Carrying Amount	$ 18,853	$ 20,366
Minimum | Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	3 years
Minimum | Trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	2 years
Minimum | Other amortizable intangibles
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	1 year
Maximum | Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	18 years
Maximum | Trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	5 years
Maximum | Other amortizable intangibles
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	15 years

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INTANGIBLE ASSETS - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	$ 165,114	$ 201,099

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INTANGIBLE ASSETS - Indefinite-lived assets (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 8,160,566	$ 8,160,566
Cable television franchises	$ 13,068,017	$ 13,068,017

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DEBT - Credit Silo Combination (Details) - USD ($)	1 Months Ended	3 Months Ended
	Sep. 30, 2020	Mar. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Principal amount		$ 26,885,067,000	$ 26,940,911,000
Long-term debt		26,689,536,000	26,722,342,000
Face Amount of Senior Notes and Senior Guaranteed Notes		7,658,806,000	7,658,806,000
Carrying amount of Senior Notes and Senior Guaranteed Notes		7,627,297,000	7,626,309,000
Face amount of Credit Facility Debt		7,682,000,000	7,750,188,000
Carrying value of Credit Facility Debt		7,639,218,000	7,705,192,000
Finance Lease, Liability		179,655,000	159,637,000
Debt		1,258,055,000	1,245,713,000
Finance Lease, Liability, Current		76,123,000	63,454,000
Long-term debt, net of current maturities		25,431,481,000	25,476,629,000
Principal Amount		26,885,067,000	26,940,911,000
Face Amount of Senior Notes		8,024,024,000	8,024,024,000
Carrying amount of Senior Notes		8,018,246,000	8,009,426,000
Senior Notes, Current		(992,691,000)	(989,917,000)
Cablevision Lightpath
Debt Instrument [Line Items]
Face Amount of Senior Notes and Senior Secured Notes		1,463,500,000	1,465,000,000
Carrying amount of Senior Notes and Senior Secured Notes		1,429,070,000	1,429,471,000
Loans Payable
Debt Instrument [Line Items]
Principal amount		110,491,000	113,592,000
Long-term debt		110,491,000	113,592,000
Principal Amount		110,491,000	113,592,000
Credit Facility [Domain]
Debt Instrument [Line Items]
Principal amount		78,750,000	78,750,000
Debt		78,750,000	78,750,000
Principal Amount		78,750,000	78,750,000
Short-term Debt
Debt Instrument [Line Items]
Principal amount		1,265,364,000	1,255,796,000
Debt		1,258,055,000	1,245,713,000
Principal Amount		1,265,364,000	1,255,796,000
Incremental Term Loan B-3 | Secured Debt [Member]
Debt Instrument [Line Items]
Principal amount		$ 1,249,500,000	1,252,688,000
Stated interest rate		2.356%
Credit facility		$ 1,245,315,000	1,248,293,000
Principal Amount		1,249,500,000	1,252,688,000
CSC Holdings Revolving Credit Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Principal amount		$ 575,000,000	625,000,000
Stated interest rate		2.358%
Line of Credit Facility, Maximum Borrowing Capacity		$ 2,475,000,000
Credit facility		566,720,000	616,027,000
Principal Amount		$ 575,000,000	625,000,000
CSC Holdings Revolving Credit Facility | Secured Debt [Member] | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate		2.25%
CSC Holdings Term Loan B | Secured Debt [Member]
Debt Instrument [Line Items]
Principal amount		$ 2,887,500,000	2,895,000,000
Stated interest rate		2.356%
Credit facility		$ 2,877,145,000	2,884,065,000
Principal Amount		2,887,500,000	2,895,000,000
Incremental Term Loan B-5 | Secured Debt [Member]
Debt Instrument [Line Items]
Principal amount		$ 2,970,000,000	2,977,500,000
Stated interest rate		2.606%
Credit facility		$ 2,950,038,000	2,956,807,000
Principal Amount		2,970,000,000	2,977,500,000
Secured Debt [Member]
Debt Instrument [Line Items]
Principal amount		1,759,017,000	1,699,566,000
Long-term debt		1,677,985,000	1,617,506,000
Principal Amount		1,759,017,000	1,699,566,000
Loans Payable
Debt Instrument [Line Items]
Principal amount		118,065,000	183,690,000
Long-term debt		118,065,000	174,801,000
Principal Amount		118,065,000	183,690,000
Cablevision Lightpath Term B Loan | Secured Debt [Member]
Debt Instrument [Line Items]
Principal amount		$ 598,500,000	600,000,000
Stated interest rate		3.75%
Credit facility		$ 581,879,000	582,808,000
Principal Amount		598,500,000	600,000,000
Cablevision Lightpath Term B Loan | Secured Debt [Member] | Eurodollar
Debt Instrument [Line Items]
Basis spread on variable rate	3.25%
Cablevision Lightpath Revolving Credit Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Principal amount		0	0
Line of Credit Facility, Maximum Borrowing Capacity		100,000,000
Credit facility		0	0
Principal Amount		0	0
Senior Notes | 8.0% Notes due April 15, 2020
Debt Instrument [Line Items]
Principal amount		$ 1,000,000,000	1,000,000,000
Stated interest rate		3.375%
Outstanding debt		$ 996,760,000	996,692,000
Principal Amount		1,000,000,000	1,000,000,000
Senior Notes | 6.75% Notes due November 15, 2021
Debt Instrument [Line Items]
Principal amount		$ 1,000,000,000	1,000,000,000
Stated interest rate		6.75%
Outstanding debt		$ 992,691,000	989,917,000
Principal Amount		1,000,000,000	1,000,000,000
Senior Notes | 5.875% Notes due September 15, 2022
Debt Instrument [Line Items]
Principal amount		$ 649,024,000	649,024,000
Stated interest rate		5.875%
Outstanding debt		$ 621,617,000	617,333,000
Principal Amount		649,024,000	649,024,000
Senior Notes | 5.25% Notes due June 1, 2024
Debt Instrument [Line Items]
Principal amount		$ 750,000,000	750,000,000
Stated interest rate		5.25%
Outstanding debt		$ 700,419,000	697,041,000
Principal Amount		750,000,000	750,000,000
Senior Notes | Cablevision 7.500% Notes due April 1, 2028
Debt Instrument [Line Items]
Principal amount		$ 4,118,000	4,118,000
Stated interest rate		7.50%
Outstanding debt		$ 4,112,000	4,112,000
Principal Amount		4,118,000	4,118,000
Senior Notes | CSC Holdings 7.500% Notes due April 1, 2028
Debt Instrument [Line Items]
Principal amount		$ 1,045,882,000	1,045,882,000
Stated interest rate		7.50%
Outstanding debt		$ 1,044,462,000	1,044,424,000
Principal Amount		1,045,882,000	1,045,882,000
Senior Notes | CSC Holdings 5.750% Notes due January 15, 2030
Debt Instrument [Line Items]
Principal amount		$ 2,250,000,000	2,250,000,000
Stated interest rate		5.75%
Outstanding debt		$ 2,285,317,000	2,286,097,000
Principal Amount		2,250,000,000	2,250,000,000
Senior Notes | CSC Holdings 4.625% Notes due December 1, 2030
Debt Instrument [Line Items]
Principal amount		$ 2,325,000,000	2,325,000,000
Stated interest rate		4.625%
Outstanding debt		$ 2,369,628,000	2,370,502,000
Principal Amount		2,325,000,000	2,325,000,000
Senior Notes | Cablevision Lightpath LLC 5.625% Notes due September 15, 2028
Debt Instrument [Line Items]
Principal amount		$ 415,000,000	415,000,000
Stated interest rate		5.625%
Outstanding debt		$ 406,400,000	406,176,000
Principal Amount		415,000,000	415,000,000
Secured Debt [Member] | CSC Holdings 5.500% Notes due May 15, 2026
Debt Instrument [Line Items]
Principal amount		$ 1,498,806,000	1,498,806,000
Stated interest rate		5.50%
Outstanding debt		$ 1,488,086,000	1,487,644,000
Principal Amount		1,498,806,000	1,498,806,000
Secured Debt [Member] | 5.5% Notes due April 15, 2027
Debt Instrument [Line Items]
Principal amount		$ 1,310,000,000	1,310,000,000
Stated interest rate		5.50%
Outstanding debt		$ 1,306,088,000	1,305,955,000
Principal Amount		1,310,000,000	1,310,000,000
Secured Debt [Member] | 5.375% Senior Guaranteed Notes Due February 1, 2028
Debt Instrument [Line Items]
Principal amount		$ 1,000,000,000	1,000,000,000
Stated interest rate		5.375%
Outstanding debt		$ 993,677,000	993,490,000
Principal Amount		1,000,000,000	1,000,000,000
Secured Debt [Member] | CSC Holdings 6.500% Notes due February 1, 2029
Debt Instrument [Line Items]
Principal amount		$ 1,750,000,000	1,750,000,000
Stated interest rate		6.50%
Outstanding debt		$ 1,747,309,000	1,747,245,000
Principal Amount		1,750,000,000	1,750,000,000
Secured Debt [Member] | CSC Holdings 4.125% Notes due December 1, 2030
Debt Instrument [Line Items]
Principal amount		$ 1,100,000,000	1,100,000,000
Stated interest rate		4.125%
Outstanding debt		$ 1,095,377,000	1,095,283,000
Principal Amount		1,100,000,000	1,100,000,000
Secured Debt [Member] | Cablevision Lightpath LLC 3.875% Notes due September 15, 2027
Debt Instrument [Line Items]
Principal amount		$ 450,000,000	450,000,000
Stated interest rate		3.875%
Outstanding debt		$ 440,791,000	440,487,000
Principal Amount		450,000,000	450,000,000
Long-term Debt
Debt Instrument [Line Items]
Principal amount		25,619,703,000	25,685,115,000
Long-term debt, net of current maturities		25,431,481,000	25,476,629,000
Principal Amount		$ 25,619,703,000	$ 25,685,115,000

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DEBT - Schedule of Exchange Agreement (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Principal amount	$ 26,885,067	$ 26,940,911

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DEBT - CSC Holdings Credit Facilities (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Debt Instrument [Line Items]
Principal amount	$ 26,885,067,000		$ 26,940,911,000
Proceeds from long-term debt	150,000,000	$ 0
Repayments of line of credit	225,863,000	18,183,000
CSC Holdings
Debt Instrument [Line Items]
Cash distributions to parent	501,000,000	720,350,000
Proceeds from long-term debt	150,000,000	0
Repayments of line of credit	225,863,000	$ 18,183,000
5.5% Notes due April 15, 2027 | Secured Debt [Member]
Debt Instrument [Line Items]
Principal amount	$ 1,310,000,000		1,310,000,000
Stated interest rate	5.50%
8.0% Notes due April 15, 2020 | Senior Notes
Debt Instrument [Line Items]
Principal amount	$ 1,000,000,000		1,000,000,000
Stated interest rate	3.375%
Secured Debt [Member] | CSC Holdings Revolving Credit Facility | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	2.25%
Secured Debt [Member] | Incremental Term Loan B-3
Debt Instrument [Line Items]
Principal amount	$ 1,249,500,000		1,252,688,000
Secured Debt [Member] | Incremental Term Loan B-5
Debt Instrument [Line Items]
Principal amount	$ 2,970,000,000		2,977,500,000
Secured Debt [Member] | CSC Holdings Revolving Credit Facility - Non-Extend Creditors [Member] | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	3.25%
Revolving Credit Facility | CSC Holdings Revolving Credit Facility
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 2,475,000,000
Principal amount	$ 575,000,000		$ 625,000,000

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DEBT - Cequel Credit Facilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Line of Credit Facility [Line Items]
Principal amount	$ 26,885,067	$ 26,940,911

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DEBT - Credit Facilities Outstanding (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Long-term debt	$ 26,689,536,000	$ 26,722,342,000
CSC Holdings Revolving Credit Facility, Portion Due October 9, 2020 | Revolving Credit Facility
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 200,000
CSC Holdings Revolving Credit Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Stated interest rate	2.358%
Line of Credit Facility, Maximum Borrowing Capacity	$ 2,475,000,000
Credit facility, Carrying Value	566,720,000	616,027,000
Letters of credit outstanding	137,875,000
Line of credit facility, remaining borrowing capacity	$ 1,762,125,000
CSC Holdings Term Loan B | Secured Debt [Member]
Debt Instrument [Line Items]
Stated interest rate	2.356%
Credit facility, Carrying Value	$ 2,877,145,000	2,884,065,000
Incremental Term Loan B-3 | Secured Debt [Member]
Debt Instrument [Line Items]
Stated interest rate	2.356%
Credit facility, Carrying Value	$ 1,245,315,000	1,248,293,000
Secured Debt [Member]
Debt Instrument [Line Items]
Long-term debt	$ 1,677,985,000	$ 1,617,506,000

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DEBT - Senior Guaranteed Notes and Senior Notes and Debentures (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Debt Instrument [Line Items]
Principal amount	$ 26,885,067,000		$ 26,940,911,000
Less: Current portion	992,691,000		989,917,000
Face Amount of Senior Notes and Senior Guaranteed Notes	7,658,806,000		7,658,806,000
Carrying amount of Senior Notes and Senior Guaranteed Notes	7,627,297,000		7,626,309,000
Face amount of Credit Facility Debt	7,682,000,000		7,750,188,000
Carrying value of Credit Facility Debt	7,639,218,000		7,705,192,000
Finance Lease, Liability	179,655,000		159,637,000
Long-term debt	26,689,536,000		26,722,342,000
Debt	1,258,055,000		1,245,713,000
Finance Lease, Liability, Current	76,123,000		63,454,000
Long-term debt, net of current maturities	25,431,481,000		25,476,629,000
Repayments of line of credit	225,863,000	$ 18,183,000
Loans Payable
Debt Instrument [Line Items]
Principal amount	110,491,000		113,592,000
Long-term debt	110,491,000		113,592,000
Short-term Debt
Debt Instrument [Line Items]
Principal amount	1,265,364,000		1,255,796,000
Debt	1,258,055,000		1,245,713,000
Credit Facility [Domain]
Debt Instrument [Line Items]
Principal amount	78,750,000		78,750,000
Debt	78,750,000		78,750,000
Incremental Term Loan B-3 | Secured Debt [Member]
Debt Instrument [Line Items]
Principal amount	$ 1,249,500,000		1,252,688,000
Stated interest rate	2.356%
Credit facility	$ 1,245,315,000		1,248,293,000
Incremental Term Loan B-5 | Secured Debt [Member]
Debt Instrument [Line Items]
Principal amount	$ 2,970,000,000		2,977,500,000
Stated interest rate	2.606%
Credit facility	$ 2,950,038,000		2,956,807,000
Loans Payable
Debt Instrument [Line Items]
Principal amount	118,065,000		183,690,000
Long-term debt	118,065,000		174,801,000
Secured Debt [Member]
Debt Instrument [Line Items]
Principal amount	1,759,017,000		1,699,566,000
Long-term debt	1,677,985,000		1,617,506,000
CSC Holdings Revolving Credit Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Principal amount	$ 575,000,000		625,000,000
Stated interest rate	2.358%
Line of Credit Facility, Maximum Borrowing Capacity	$ 2,475,000,000
Credit facility	$ 566,720,000		616,027,000
Secured Debt [Member] | 5.5% Notes due April 15, 2027
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.50%
Principal amount	$ 1,310,000,000		1,310,000,000
Carrying Amount	$ 1,306,088,000		1,305,955,000
Secured Debt [Member] | 5.375% Senior Guaranteed Notes Due February 1, 2028
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.375%
Principal amount	$ 1,000,000,000		1,000,000,000
Carrying Amount	$ 993,677,000		993,490,000
Secured Debt [Member] | CSC Holdings 5.500% Notes due May 15, 2026
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.50%
Principal amount	$ 1,498,806,000		1,498,806,000
Carrying Amount	$ 1,488,086,000		1,487,644,000
Secured Debt [Member] | CSC Holdings 6.500% Notes due February 1, 2029
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.50%
Principal amount	$ 1,750,000,000		1,750,000,000
Carrying Amount	1,747,309,000		1,747,245,000
Long-term Debt
Debt Instrument [Line Items]
Principal amount	25,619,703,000		25,685,115,000
Long-term debt, net of current maturities	$ 25,431,481,000		25,476,629,000
Senior Notes | 6.75% Notes due November 15, 2021
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.75%
Principal amount	$ 1,000,000,000		1,000,000,000
Carrying Amount	$ 992,691,000		989,917,000
Senior Notes | 5.25% Notes due June 1, 2024
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.25%
Principal amount	$ 750,000,000		750,000,000
Carrying Amount	$ 700,419,000		697,041,000
Senior Notes | CSC Holdings 7.500% Notes due April 1, 2028
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.50%
Principal amount	$ 1,045,882,000		1,045,882,000
Carrying Amount	$ 1,044,462,000		1,044,424,000
Senior Notes | 8.0% Notes due April 15, 2020
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.375%
Principal amount	$ 1,000,000,000		1,000,000,000
Carrying Amount	$ 996,760,000		996,692,000
Senior Notes | 5.875% Notes due September 15, 2022
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.875%
Principal amount	$ 649,024,000		649,024,000
Carrying Amount	$ 621,617,000		617,333,000
Senior Notes | Cablevision 7.500% Notes due April 1, 2028
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.50%
Principal amount	$ 4,118,000		4,118,000
Carrying Amount	$ 4,112,000		4,112,000
Senior Notes | CSC Holdings 5.750% Notes due January 15, 2030
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.75%
Principal amount	$ 2,250,000,000		2,250,000,000
Carrying Amount	$ 2,285,317,000		$ 2,286,097,000

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DEBT - Senior Guaranteed Notes, Senior Secured Notes, and Senior Notes and Debentures (Details) - USD ($)	1 Months Ended	3 Months Ended
	Sep. 30, 2020	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Debt Instrument [Line Items]
Principal amount		$ 26,885,067,000		$ 26,940,911,000
Long-term debt		26,689,536,000		26,722,342,000
Stock Issued During Period, Value, New Issues		2,044,000	$ 2,507,000
Collateralized Agreements		99,941,000
Notes Payable that will be reclassed to collateralized debt upon maturity		$ 59,451,000
Cablevision Lightpath LLC | Cablevision Lightpath LLC
Debt Instrument [Line Items]
Ownership percentage of noncontrolling interest		50.01%
CSC Holdings Revolving Credit Facility, Portion Due October 9, 2020 | Revolving Credit Facility
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 200,000
Cablevision Lightpath Revolving Credit Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Principal amount		0		0
Line of Credit Facility, Maximum Borrowing Capacity		100,000,000
Cablevision Lightpath Term B Loan | Secured Debt [Member]
Debt Instrument [Line Items]
Principal amount		598,500,000		600,000,000
Cablevision Lightpath Term B Loan | Secured Debt [Member] | Alternate Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate	2.25%
Cablevision Lightpath Term B Loan | Secured Debt [Member] | Eurodollar
Debt Instrument [Line Items]
Basis spread on variable rate	3.25%
Senior Notes | CSC Holdings 5.750% Notes due January 15, 2030
Debt Instrument [Line Items]
Principal amount		$ 2,250,000,000		2,250,000,000
Stated interest rate		5.75%
Secured Debt [Member] | 5.5% Notes due April 15, 2027
Debt Instrument [Line Items]
Principal amount		$ 1,310,000,000		1,310,000,000
Stated interest rate		5.50%
Long-term Debt
Debt Instrument [Line Items]
Principal amount		$ 25,619,703,000		$ 25,685,115,000

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DEBT - Summary of Debt Maturities (Details) $ in Thousands	Mar. 31, 2021 USD ($)
Debt Disclosure [Abstract]
2019	$ 1,166,479
2020	734,667
2021	1,841,383
2022	1,403,889
2023	2,823,750
Thereafter	$ 18,735,244

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DERIVATIVE CONTRACTS AND COLLATERALIZED INDEBTEDNESS - Settlements of Collateralized Indebtedness (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Jan. 31, 2021	Mar. 31, 2021	Mar. 31, 2020
Derivative [Line Items]
Number of shares (in shares)	5,337,750
Notes Payable that will be reclassed to collateralized debt upon maturity		$ 59,451
Proceeds from Issuance of Secured Debt		185,105	$ 0
Comcast Synthetic Monetization Closeout
Derivative [Line Items]
Proceeds from Issuance of Secured Debt		$ 185,102

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DERIVATIVE CONTRACTS AND COLLATERALIZED INDEBTEDNESS - Location of Assets and Liabilities Within the Consolidated Balance Sheets (Details) - Not Designated as Hedging Instruments - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 8,252	$ 55,559
Liability Derivatives	485,263	568,803
Interest Rate Swap | Current derivative contracts
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	8,252	5,132
Interest Rate Swap | Long-term derivative contracts
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	0	4,774
Interest Rate Swap | Short-term liabilities under derivative contracts
Derivatives, Fair Value [Line Items]
Liability Derivatives	12,861	0
Interest Rate Swap | Long-term liabilities under derivative contracts
Derivatives, Fair Value [Line Items]
Liability Derivatives	(170,984)	(275,297)
Prepaid forward contracts | Current derivative contracts
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset		0	$ 45,653
Prepaid forward contracts | Short-term liabilities under derivative contracts
Derivatives, Fair Value [Line Items]
Liability Derivatives	0	(45,653)
Prepaid forward contracts | Long-term liabilities under derivative contracts
Derivatives, Fair Value [Line Items]
Liability Derivatives	$ (301,418)	$ (247,853)

XML

DERIVATIVE CONTRACTS AND COLLATERALIZED INDEBTEDNESS - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Derivative [Line Items]
Gain (loss) on derivative contracts related to change in the value of equity derivative contracts related to Comcast common stock	$ (53,565)	$ 439,861
Change in the fair value of Comcast common stock included in gain (loss) on investments	73,453	(454,896)
Gain (loss) on interest rate swap contracts, net of a gain of $74,835 recorded in the 2020 period in connection with the early termination of the swap agreements discussed below	$ 75,653	(54,832)
Notes related to derivative contracts
Derivative [Line Items]
Gain (loss) on derivative contracts related to change in the value of equity derivative contracts related to Comcast common stock		$ 439,861

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DERIVATIVE CONTRACTS AND COLLATERALIZED INDEBTEDNESS - Schedule of Interest Rate Derivatives (Details) - Interest Rate Swap - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2021
Derivative [Line Items]
Derivative, Notional Amount	$ 1,500,000,000
Cash received from interest rate swap unwind	74,835,000
Derivative Instrument Maturity Date 2020, 3 Month LIBOR minus 0.1075%
Derivative [Line Items]
Basis spread		0.1075%
Derivative Instrument Maturity Date 2025, Fixed 1.53%
Derivative [Line Items]
Derivative, Notional Amount		$ 500,000,000
Company Pays		1.53%
Derivative Instrument Maturity Date 2022, Fixed 2.733%
Derivative [Line Items]
Derivative, Notional Amount		$ 500,000,000
Company Pays		2.733%
Derivative Instrument Maturity Date 2025, Fixed 1.625
Derivative [Line Items]
Derivative, Notional Amount		$ 500,000,000
Company Pays		1.625%
Derivative Instrument Maturity Date 2026, Fixed 2.9155%
Derivative [Line Items]
Derivative, Notional Amount		$ 750,000,000
Company Pays		2.9155%
Derivative Instrument Maturity Date 2026, Fixed 2.9025%
Derivative [Line Items]
Derivative, Notional Amount		$ 750,000,000
Company Pays		2.9025%
Derivative Instrument Maturity Date 2025, Fixed 1.458%
Derivative [Line Items]
Derivative, Notional Amount		$ 500,000,000
Company Pays		1.458%
Derivative Instruments Maturing Date 2025, Fixed 1.53% and 1.625% [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 1,000,000,000
Derivative Instrument Notional Amount 2,850,000, 0.5185% Basis Spread | LIBOR
Derivative [Line Items]
Derivative, Notional Amount		$ 2,850,000,000

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FAIR VALUE MEASUREMENT - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Carrying Amount
Liabilities:
Debt, fair value	$ 26,509,881	$ 26,562,705
Estimated Fair Value
Liabilities:
Debt, fair value	27,250,461	27,811,011
Fair Value, Inputs, Level 2 [Member] | Carrying Amount | Credit facility debt | CSC Holdings
Liabilities:
Debt, fair value	8,221,097	8,288,000
Fair Value, Inputs, Level 2 [Member] | Carrying Amount | Secured Debt [Member] | CSC Holdings
Liabilities:
Debt, fair value	1,677,985	1,617,506
Fair Value, Inputs, Level 2 [Member] | Carrying Amount | Senior guaranteed notes and senior secured notes | CSC Holdings
Liabilities:
Debt, fair value	8,068,088	8,066,796
Fair Value, Inputs, Level 2 [Member] | Carrying Amount | Senior notes | CSC Holdings
Liabilities:
Debt, fair value	8,424,646	8,415,602
Fair Value, Inputs, Level 2 [Member] | Carrying Amount | Notes payable and supply chain financing | CSC Holdings
Liabilities:
Debt, fair value	118,065	174,801
Fair Value, Inputs, Level 2 [Member] | Estimated Fair Value | Credit facility debt | CSC Holdings
Liabilities:
Debt, fair value	8,280,500	8,350,188
Fair Value, Inputs, Level 2 [Member] | Estimated Fair Value | Secured Debt [Member] | CSC Holdings
Liabilities:
Debt, fair value	1,753,986	1,692,724
Fair Value, Inputs, Level 2 [Member] | Estimated Fair Value | Senior guaranteed notes and senior secured notes | CSC Holdings
Liabilities:
Debt, fair value	8,363,231	8,567,858
Fair Value, Inputs, Level 2 [Member] | Estimated Fair Value | Senior notes | CSC Holdings
Liabilities:
Debt, fair value	8,734,561	9,024,990
Fair Value, Inputs, Level 2 [Member] | Estimated Fair Value | Notes payable and supply chain financing | CSC Holdings
Liabilities:
Debt, fair value	118,183	175,251
Fair Value Measured on a Recurring Basis | Fair Value, Inputs, Level 1 [Member]
Assets:
Investment securities	2,324,308	2,250,854
Prepaid forward contracts | Fair Value Measured on a Recurring Basis | Fair Value, Inputs, Level 2 [Member]
Assets:
Derivative asset	0	45,653
Liabilities:
Derivative liability	(301,418)	293,506
Interest rate swap contracts | Fair Value Measured on a Recurring Basis | Fair Value, Inputs, Level 2 [Member]
Assets:
Derivative asset	8,252	9,906
Liabilities:
Derivative liability	(183,845)	275,297
Money market funds | Fair Value Measured on a Recurring Basis | Fair Value, Inputs, Level 1 [Member]
Assets:
Money market funds	$ 150,965	$ 50,236

XML

SHARE-BASED COMPENSATION - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Document Period End Date	Mar. 31, 2021
Share based compensation expense	$ 28,281	$ 27,946
Share based compensation - Unrecognized deferred compensation cost	$ 184,811
Carry Unit Plan | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value (in dollars per unit)	$ 2.10		$ 3.89
Share based compensation expense	$ 759	3,120
Share based compensation - Unrecognized deferred compensation cost	44
2017 LTIP | Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	24,223	20,349
Share based compensation - Unrecognized deferred compensation cost	123,543
2017 LTIP | Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	2,982	3,901
Share based compensation - Unrecognized deferred compensation cost	60,675
2019 LTIP | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	317	$ 576
Share based compensation - Unrecognized deferred compensation cost	$ 549

XML

SHARE-BASED COMPENSATION - Carrying Unit Award Activity (Details) - Carry Unit Plan	3 Months Ended
	Mar. 31, 2021 $ / shares shares
Weighted Average Grant Date Fair Value
Balance at beginning of period, weighted average grant date fair value (in dollars per share) | $ / shares	$ 3.41
Vested weighted average grant date fair value (in dollars per share) | $ / shares	3.80
Balance at end of period, weighted average grant date fair value (in dollars per share) | $ / shares	$ 1.99
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Beginning balance (in shares) | shares	6,875,000
Vested (in shares) | shares	(5,375,000)
Ending balance (in shares) | shares	1,500,000

XML

SHARE-BASED COMPENSATION - Stock Option Activity (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Weighted Average Exercise Price Per Share
Exercised, weighted average exercise price per share (in dollars per share)	$ 17.79
Share based compensation expense	$ 28,281,000	$ 27,946,000
Share based compensation - Unrecognized deferred compensation cost	$ 184,811,000
Risk-free interest rate	0.93%
Expected life (in years)	6 years 2 months 4 days
Dividend yield	0.00%
Volatility	32.92%
Grant date fair value	$ 10.77
2017 LTIP
Weighted Average Exercise Price Per Share
Beginning balance (in dollars per share)	25.52
Granted (in dollars per share)	34.78
Forfeited (in dollars per share)	26.10
Ending balance (in dollars per share)	25.64
Options exercisable (in dollars per share)	$ 17.55
Options outstanding, Weighted Average Remaining Contractual Term (in years)	8 years 5 months 15 days	8 years 8 months 8 days
Options exercisable, Weighted Average Remaining Contractual Term (in years)	6 years 9 months 10 days
Options outstanding, Aggregate Intrinsic Value	$ 256,796,000		$ 457,608,000
Options exercisable, Aggregate Intrinsic Value	$ 47,070,000
2017 LTIP | Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Beginning balance (in shares)	37,062,146
Granted (in shares)	409,478
Option exercises	104,365
Forfeited (in shares)	(360,778)
Ending balance (in shares)	37,006,481
Options exercisable (in shares)	3,141,750
Weighted Average Exercise Price Per Share
Share based compensation expense	$ 24,223,000	$ 20,349,000
Share based compensation - Unrecognized deferred compensation cost	$ 123,543,000
Expected time (in years) unrecogized compensation costs relating to share based awards will be recognized	2 years 6 months 21 days
2017 LTIP | Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Granted (in shares)	7,330,235
Weighted Average Exercise Price Per Share
Share based compensation expense	$ 2,982,000	3,901,000
Share based compensation - Unrecognized deferred compensation cost	$ 60,675,000
Expected time (in years) unrecogized compensation costs relating to share based awards will be recognized	4 years 10 months 6 days
Grant date fair value	$ 10.65
2019 LTIP | Restricted Stock
Weighted Average Exercise Price Per Share
Share based compensation expense	$ 317,000	$ 576,000
Share based compensation - Unrecognized deferred compensation cost	$ 549,000

XML

SHARE-BASED COMPENSATION - Fair Value Assumptions For Stock Options (Details)	3 Months Ended
	Mar. 31, 2021 $ / shares
Share-based Payment Arrangement [Abstract]
Risk-free interest rate	0.93%
Expected life (in years)	6 years 2 months 4 days
Dividend yield	0.00%
Volatility	32.92%
Grant date fair value	$ 10.77

XML

AFFILIATE AND RELATED PARTY TRANSACTIONS - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Related Party Transaction [Line Items]
Related party expense	$ 2,001	$ 2,642

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AFFILIATE AND RELATED PARTY TRANSACTIONS - Revenue and Related Charges (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Related Party Transaction [Line Items]
Revenue	$ 3,406	$ 3,488
Operating expenses:
Programming and other direct costs	(2,228)	(2,189)
Other operating expenses, net	(3,179)	(3,941)
Operating expenses, net	(5,407)	(6,130)
Net charges	(2,001)	(2,642)
Capital Expenditures	$ 10,621	$ 7,225

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AFFILIATE AND RELATED PARTY TRANSACTIONS - Amounts Due From and Due to Related Parties (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Related Party Transaction [Line Items]
Treasury Stock, Shares, Acquired	6,066,251		6,629,415
Payments for Repurchase of Common Stock	$ 503,645	$ 726,005
Share based compensation expense	28,281	27,946
Related party expense	$ 2,001	2,642
Stock options | 2017 LTIP
Related Party Transaction [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	409,478
Share based compensation expense	$ 24,223	20,349
Restricted Stock | 2019 LTIP
Related Party Transaction [Line Items]
Share based compensation expense	317	576
CSC Holdings
Related Party Transaction [Line Items]
Cash distributions to parent	501,000	720,350
Intercompany settlement	745	(150,602)
Cash distributions	501,000	$ 720,350
Affiliates
Related Party Transaction [Line Items]
Due to related parties and affiliates	12,698		$ 8,538
Affiliates | Other Related Party
Related Party Transaction [Line Items]
Due from related parties and affiliates	3,795		4,262
Due to related parties and affiliates	1,226		600
Affiliates | Altice Management International
Related Party Transaction [Line Items]
Due to related parties and affiliates	$ 11,472		$ 7,938

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SUBSEQUENT EVENTS (Details) $ in Thousands	Apr. 06, 2021 USD ($)
North Carolina Assets | Subsequent Event
Consideration transfered	$ 310,000

XML

Label	Element	Value
Noncontrolling Interest [Member]
Net Income (Loss) Attributable to Noncontrolling Interest	us-gaap_NetIncomeLossAttributableToNoncontrollingInterest	$ 8,618,000