Altice USA (ATUS) 10-K 1 Mar 19 2018 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2018	Feb. 22, 2019	Jun. 30, 2018
Class of Stock [Line Items]
Entity Registrant Name	Altice USA, Inc.
Entity Central Index Key	1,702,780
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	FY
Document Type	10-K
Amendment Flag	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Document Period End Date	Dec. 31, 2018
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 6,212,931,374
Common Class A
Class of Stock [Line Items]
Entity Common Stock, Shares Outstanding		503,702,013
Common Class B
Class of Stock [Line Items]
Entity Common Stock, Shares Outstanding		194,038,451

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current Assets:
Cash and cash equivalents	$ 298,781	$ 329,848
Restricted cash	257	252
Accounts receivable, trade (less allowance for doubtful accounts of $13,520 and $13,420)	448,399	370,765
Prepaid expenses and other current assets	136,285	130,425
Amounts due from affiliates	17,557	19,764
Derivative contracts	1,975	52,545
Total current assets	903,254	903,599
Property, plant and equipment, net of accumulated depreciation of $4,044,671 and $2,599,579	5,828,881	6,023,826
Investment securities pledged as collateral	1,462,626	1,720,357
Derivative contracts	109,344	0
Other assets	84,382	57,904
Amortizable intangibles, net of accumulated amortization of $2,882,787 and $2,008,573	4,192,824	5,066,454
Indefinite-lived cable television franchises	13,020,081	13,020,081
Goodwill	8,012,416	8,019,861
Total assets	33,613,808	34,812,082
Current Liabilities:
Accounts payable	857,502	795,128
Accrued liabilities:
Interest	386,475	397,422
Employee related costs	139,806	147,727
Other accrued expenses	312,564	411,988
Amounts due to affiliates	26,096	10,998
Deferred revenue	140,053	111,197
Liabilities under derivative contracts	70	52,545
Credit facility debt	54,563	42,650
Senior guaranteed notes and senior notes and debentures	0	507,744
Capital lease obligations	5,928	9,539
Notes payable	98,134	33,424
Total current liabilities	2,021,191	2,520,362
Defined benefit plan obligations	96,794	103,163
Other liabilities	174,760	144,289
Deferred tax liability	4,723,937	4,769,286
Liabilities under derivative contracts	132,908	187,406
Collateralized indebtedness	1,406,182	1,349,474
Credit facility debt	5,860,996	4,600,873
Senior guaranteed notes and senior notes and debentures	15,359,561	15,352,688
Capital lease obligations	19,262	12,441
Notes payable	7,974	32,478
Deficit investments in affiliates	0	3,579
Total liabilities	29,803,565	29,076,039
Commitments and contingencies (Note 17)
Redeemable equity	130,007	231,290
Stockholders' Equity:
Preferred stock, $.01 par value, 100,000,000 shares authorized, no shares issued and outstanding	0	0
Paid-in capital	3,423,803	4,665,229
Retained earnings	251,830	840,636
Total stockholders' equity before accumulated other comprehensive Income and non-controlling interest	3,682,724	5,513,236
Accumulated other comprehensive loss	(11,783)	(10,022)
Total stockholders' equity	3,670,941	5,503,214
Noncontrolling interest	9,295	1,539
Total stockholders' equity	3,680,236	5,504,753
Total liabilities and stockholders' equity	33,613,808	34,812,082
Common Class A
Stockholders' Equity:
Common stock	4,961	2,470
Common Class B
Stockholders' Equity:
Common stock	2,130	4,901
Common Class C
Stockholders' Equity:
Common stock	$ 0	$ 0

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
ASSETS
Property, plant and equipment, accumulated depreciation	$ 4,044,671	$ 2,599,579
Amortizable intangible assets, accumulated amortization	2,882,787	2,008,573
Accounts receivable, trade allowance for doubtful accounts	$ 13,520	$ 13,420
Stockholders' Equity:
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
Common stock, shares outstanding (in shares)	709,040,286
Common Class A
Stockholders' Equity:
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)	496,064,027	246,982,292
Common stock, shares outstanding (in shares)	496,064,027	246,982,292
Common Class B
Stockholders' Equity:
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 issued (in shares)	490,086,674	490,086,674
Common stock, shares outstanding (in shares)	212,976,259	490,086,674
Common Class C
Stockholders' Equity:
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

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Statement [Abstract]
Revenue (including revenue from affiliates of $2,575, $1,100 and $1,086 respectively) (See Note 16)	$ 9,566,608	$ 9,306,950	$ 6,017,212
Operating expenses:
Programming and other direct costs (including charges from affiliates of $7,261, $4,176 and $1,947 respectively) (See Note 16)	3,173,076	3,035,655	1,911,230
Other operating expenses (including charges from affiliates of $16,307, $33,140 and $18,854 respectively) (See Note 16)	2,290,266	2,347,315	1,702,472
Restructuring and other expense	38,548	152,401	240,395
Depreciation and amortization (including impairments)	2,382,339	2,930,571	1,700,306
Total operating expenses	7,884,229	8,465,942	5,554,403
Operating income	1,682,379	841,008	462,809
Other income (expense):
Interest expense (including interest expense to affiliates and related parties of $600, $90,405 and $112,712, respectively) (See Note 16)	(1,556,282)	(1,603,132)	(1,456,541)
Interest income	10,856	1,921	13,811
Gain (loss) on investments and sale of affiliate interests, net	(250,877)	237,354	142,102
Gain (loss) on derivative contracts, net	218,848	(236,330)	(53,696)
Gain (loss) on interest rate swap contracts	(61,697)	5,482	(72,961)
Loss on extinguishment of debt and write-off of deferred financing costs (including $513,723 related to affiliates and related parties in 2017) (See Note 16)	(48,804)	(600,240)	(127,649)
Other income (expense), net	(12,484)	(13,651)	980
Total other income (expense)	(1,700,440)	(2,208,596)	(1,553,954)
Loss before income taxes	(18,061)	(1,367,588)	(1,091,145)
Income tax benefit	38,655	2,862,352	259,666
Net income (loss)	20,594	1,494,764	(831,479)
Net income attributable to noncontrolling interests	(1,761)	(1,587)	(551)
Net income (loss) attributable to Altice USA, Inc. stockholders	$ 18,833	$ 1,493,177	$ (832,030)
Income (loss) per share:
Basic and diluted income (loss) per share (in dollars per share)	$ 0.03	$ 2.15	$ (1.28)
Basic and diluted weighted average common shares (in shares)	730,088	696,055	649,525
Cash dividends declared per common share (in dollars per share)	$ 2.035	$ 1.2927908856	$ 0.69

CONSOLIDATED STATEMENTS OF OP_2

CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Statement [Abstract]
Revenue from affiliates	$ 2,575	$ 1,100	$ 1,086
Programming and other direct costs from affiliates	7,261	4,176	1,947
Other operating expenses from affiliates	16,307	33,140	18,854
Interest expense to related parties and affiliates	600	90,405	112,712
Loss on extinguishment of debt and write-off of deferred financing costs related to affiliates and related parties	$ 0	$ 513,723	$ 0

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 20,594	$ 1,494,764	$ (831,479)
Defined benefit pension plans:
Unrecognized actuarial gain (loss)	830	(18,632)	3,452
Applicable income taxes	(220)	7,441	(1,381)
Unrecognized gain (loss) arising during period, net of income taxes	610	(11,191)	2,071
Settlement loss included in other expense, net	1,268	1,845	(154)
Applicable income taxes	342	738	(62)
Settlement loss included in other expense, net, net of income taxes	926	1,107	(92)
Curtailment loss	0	(3,195)	0
Applicable income taxes	0	1,278	0
Curtailment loss, net of income taxes	0	(1,917)	0
Foreign currency translation adjustment	967	0	0
Applicable income taxes	(261)	0	0
Foreign currency translation adjustment, net	706	0	0
Other comprehensive gain (loss)	2,242	(12,001)	1,979
Comprehensive income (loss)	22,836	1,482,763	(829,500)
Comprehensive income attributable to noncontrolling interests	(1,761)	(1,587)	(551)
Comprehensive income (loss) attributable to Altice USA, Inc. stockholders	$ 21,075	$ 1,481,176	$ (830,051)

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Total Stockholders' Equity	Paid-in Capital	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income	Non-controlling Interest	Common Class ACommon Stock	Common Class BCommon Stock	Organizational Transactions Prior to IPO	Organizational Transactions Prior to IPOTotal Stockholders' Equity	Organizational Transactions Prior to IPOPaid-in Capital	Organizational Transactions Prior to IPOCommon Class ACommon Stock	Organizational Transactions Prior to IPOCommon Class BCommon Stock	IPO	IPOTotal Stockholders' Equity	IPOPaid-in Capital	IPOCommon Class ACommon Stock
Ending balance at Dec. 31, 2015	$ 2,108,080	$ 2,108,080	$ 2,252,028	$ (143,948)			$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Impact of change in accounting policy in connection with the adoption of ASU No. 2014-09 | ASU No. 2014-09	12,666	12,666		12,666
Balance, as adjusted	2,120,746	2,120,746	2,252,028	(131,282)			0
Beginning balance at Dec. 31, 2015	2,108,080	2,108,080	2,252,028	(143,948)			0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to stockholders	(832,030)	(832,030)		(832,030)
Noncontrolling interests acquired	(264)					$ (264)
Net income attributable to noncontrolling interests	(551)					(551)
Pension liability adjustments, net of income taxes	1,979	1,979			$ 1,979
Foreign currency translation adjustment, net of income taxes	0
Share-based compensation expense	14,368	14,368	14,368
Change in fair value of redeemable equity	(68,148)	(68,148)	(68,148)
Contributions from stockholders	1,246,499	1,246,499	1,246,499
Distributions to stockholders/non-controlling interest	(445,176)	(445,176)	(445,176)
Excess tax benefit on share-based awards	31	31	31
Tax impact related to the Newsday Holdings, LLC transactions	3,952	3,952	3,952
Ending balance at Dec. 31, 2016	2,042,508	2,042,221	3,003,554	(963,312)	1,979	287	0	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to stockholders	1,493,177	1,493,177		1,493,177
Net income attributable to noncontrolling interests	(1,587)					(1,587)
Pension liability adjustments, net of income taxes	(12,001)	(12,001)			(12,001)
Foreign currency translation adjustment, net of income taxes	0
Share-based compensation expense	57,430	57,430	57,430
Change in fair value of redeemable equity	(163,142)	(163,142)	(163,142)
Contributions from stockholders	51,135	51,135	51,135
Receivable from parent	(50,000)	(50,000)	(50,000)
Distributions to stockholders/non-controlling interest	(840,035)	(839,700)	(839,700)			(335)
Recognition of previously unrealized excess tax benefits related to share-based awards in connection with the adoption of ASU 2016-09	310,771	310,771		310,771
Cummulative adoption of ASU 2014-09									$ 2,264,252	$ 2,264,252	$ 2,257,002	$ 2,349	$ 4,901	$ 349,071	$ 349,071	$ 348,950	$ 121
Ending balance at Dec. 31, 2017	5,504,753	5,503,214	4,665,229	840,636	(10,022)	1,539	2,470	4,901
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to stockholders	18,833	18,833		18,833
Net income attributable to noncontrolling interests	(1,761)					(1,761)
Contributions from noncontrolling interests	5,995					5,995
Pension liability adjustments, net of income taxes	1,536	1,536			1,536
Foreign currency translation adjustment, net of income taxes	706	706			706
Share-based compensation expense	59,812	59,812	59,812
Redeemable equity vested	169,452	169,452	169,452
Change in fair value of redeemable equity	(68,169)	(68,169)	(68,169)
Dividend payment	(1,499,935)	(1,499,935)	(963,711)	(536,224)
Class A shares acquired through share repurchase program and retired	(500,000)	(500,000)	(499,720)				(280)
Conversion of Class B to Class A shares, including $2,424 in connection with the Distribution							2,771	(2,771)
Impact of i24 Acquisition	(13,649)	(13,649)	61,769	(73,578)	(1,840)
Other changes to equity	(859)	(859)	(859)
Ending balance at Dec. 31, 2018	$ 3,680,236	$ 3,670,941	$ 3,423,803	251,830	(11,783)	$ 9,295	$ 4,961	$ 2,130
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Impact of change in accounting policy in connection with the adoption of ASU No. 2014-09 | ASU No. 2018-02				$ 2,163	$ (2,163)

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended				6 Months Ended	12 Months Ended
	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Jun. 20, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net income (loss)	$ 213,808	$ (128,949)	$ 2,243,325	$ (76,188)		$ 20,594	$ 1,494,764	$ (831,479)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization (including impairments)						2,382,339	2,930,571	1,700,306
Impairment of assets included in restructuring charges						0	0	2,445
Equity in net loss of affiliates						10,849	10,040	1,132
Loss (gain) on investments and sale of affiliate interests, net						250,877	(237,354)	(142,102)
Loss (gain) on derivative contracts, net						(218,848)	236,330	53,696
Loss on extinguishment of debt and write-off of deferred financing costs						48,804	600,240	127,649
Amortization of deferred financing costs and discounts (premiums) on indebtedness						85,121	31,046	27,799
Settlement loss related to pension plan						1,268	1,845	3,298
Share-based compensation expense						59,812	57,430	14,368
Deferred income taxes						(67,603)	(2,880,154)	(263,989)
Excess tax benefit on share-based awards						0	0	(31)
Provision for doubtful accounts						71,426	74,183	53,249
Change in assets and liabilities, net of effects of acquisitions and dispositions:
Accounts receivable, trade						(144,079)	(89,683)	(58,760)
Other receivables						4,246	(12,835)	9,413
Prepaid expenses and other assets						(14,889)	(7,426)	56,395
Amounts due from and due to affiliates						11,049	(34,326)	41,351
Accounts payable						12,455	73,888	(11,814)
Accrued liabilities						(130,631)	(241,701)	312,871
Deferred revenue						72,426	12,310	9,835
Liabilities related to interest rate swap contracts						53,101	(921)	78,823
Net cash provided by operating activities						2,508,317	2,018,247	1,184,455
Cash flows from investing activities:
Capital expenditures						(1,153,589)	(951,349)	(625,541)
Payment for acquisitions, net of cash acquired						(10,753)	(46,703)	(8,988,774)
Sale of affiliate interest						3,537	0	(13,825)
Proceeds related to sale of equipment, including costs of disposal						10,779	9,743	5,885
Increase in other investments						9,327	(4,773)	(4,608)
Settlement of put call options						0	(97,410)	0
Additions to other intangible assets						(584)	(1,707)	(106)
Net cash used in investing activities						(1,148,357)	(1,092,199)	(9,599,319)
Cash flows from financing activities:
Proceeds from credit facility debt, net of discounts						3,489,313	5,593,675	5,510,256
Repayment of credit facility debt						(2,221,175)	(4,411,581)	(9,133,543)
Proceeds from notes payable to affiliates and related parties						0	0	1,750,000
Issuance of senior notes and debentures					$ 0	2,050,000	0	1,310,000	$ 0
Redemption of senior notes, including premiums and fees						(2,628,962)	(1,729,400)	0
Proceeds from collateralized indebtedness, net						516,513	838,794	179,388
Repayment of collateralized indebtedness and related derivative contracts, net						(516,513)	(831,059)	(143,102)
Dividends to stockholders				(79,617)		(1,499,935)	(919,317)	(365,559)
Proceeds from notes payable						15,955	33,733	0
Repayment of notes payable						(32,632)	0	0
Excess tax benefit on share-based awards						0	0	31
Principal payments on capital lease obligations						(10,228)	(15,157)	(18,837)
Purchase of shares of Altice USA, Inc. Class A common stock, pursuant to a share repurchase program						(500,000)	0	0
Additions to deferred financing costs						(28,468)	(8,600)	(203,712)
Other						(859)	0	0
Contingent payment for acquisition						(30,000)	0	0
Proceeds from IPO, net of fees						0	349,071	0
Contributions from stockholders						0	1,135	1,246,499
Contributions from noncontrolling interests, net						(5,995)	335	0
Net cash provided by (used in) financing activities						(1,390,996)	(1,099,041)	131,421
Net decrease in cash and cash equivalents						(31,036)	(172,993)	(8,283,443)
Effect of exchange rate changes on cash and cash equivalents						(26)	0	0
Net increase in cash and cash equivalents						(31,062)	(172,993)	(8,283,443)
Cash, cash equivalents and restricted cash at beginning of year		$ 330,100		$ 503,093	$ 8,786,536	330,100	503,093	8,786,536
Cash, cash equivalents and restricted cash at end of year	$ 299,038		$ 330,100			$ 299,038	$ 330,100	$ 503,093	$ 8,786,536

CVC - CONSOLIDATED BALANCE SHEE

CVC - CONSOLIDATED BALANCE SHEETS $ in Thousands	Dec. 31, 2015USD ($)
Current Assets:
Goodwill	$ 2,040,402
Stockholders' Equity:
Total stockholders' equity	2,108,080
Cablevision Systems Corporation And Subsidiaries
Current Assets:
Cash and cash equivalents	1,003,279
Restricted cash	1,600
Accounts receivable, trade (less allowance for doubtful accounts of $13,420 and $11,677)	266,383
Prepaid expenses and other current assets (including a prepayment to an affiliate of $19,563 in 2017) (See Note 14)	123,242
Amounts due from affiliates	767
Deferred tax asset	14,596
Investment securities pledged as collateral	455,386
Derivative contracts	10,333
Total current assets	1,875,586
Property, plant and equipment, net of accumulated depreciation of $2,599,579 and $1,039,297	3,017,015
Investment in affiliates	0
Investment securities pledged as collateral	756,596
Derivative contracts	72,075
Other assets (including a prepayment to an affiliate of $6,539 in 2017) (See Note 14)	32,920
Amortizable intangible assets, net of accumulated amortization	36,951
Trademarks and other indefinite-lived intangible assets	7,250
Goodwill	262,345
Deferred financing costs, net of accumulated amortization of $8,150	7,588
Total assets	6,800,174
Current Liabilities:
Accounts payable	453,653
Accrued liabilities:
Interest	119,005
Employee related costs	344,091
Other accrued expenses	169,899
Amounts due to affiliates	29,729
Deferred revenue	55,545
Liabilities under derivative contracts	2,706
Credit facility debt	562,898
Collateralized indebtedness	416,621
Senior notes and debentures	0
Capital lease obligations	20,350
Notes payable	13,267
Total current liabilities	2,187,764
Long-term defined benefit plan obligations	99,228
Other liabilities	165,768
Deferred tax liability	704,835
Credit facility debt	1,951,556
Collateralized indebtedness	774,703
Senior guaranteed notes	0
Senior notes and debentures	5,801,011
Capital lease obligations	25,616
Notes payable	1,277
Total liabilities	11,711,758
Commitments and contingencies
Stockholders' Equity:
Preferred Stock, $.01 par value, 50,000,000 shares authorized, none issued	0
Paid-in capital	792,351
Retained earnings (accumulated deficit)	(4,059,411)
Total stockholders' equity before accumulated other comprehensive Income and non-controlling interest	(3,263,477)
Treasury stock, at cost (81,624,493 CNYG Class A common shares)	(1,610,167)
Accumulated other comprehensive income (loss)	(37,672)
Total stockholders' equity	(4,911,316)
Noncontrolling interest	(268)
Total stockholders' equity	(4,911,584)
Total liabilities and stockholders' equity	6,800,174
Cablevision Systems Corporation And Subsidiaries | CNYG Class A Common Stock
Stockholders' Equity:
Common Stock	3,042
Cablevision Systems Corporation And Subsidiaries | CNYG Class B Common Stock
Stockholders' Equity:
Common Stock	541
Cablevision Systems Corporation And Subsidiaries | RMG Class A Common Stock
Stockholders' Equity:
Common Stock	0
Cablevision Systems Corporation And Subsidiaries | RMG Class B Common Stock
Stockholders' Equity:
Common Stock	0
Cablevision Systems Corporation And Subsidiaries | Customer relationships
Current Assets:
Amortizable intangible assets, net of accumulated amortization	11,636
Cablevision Systems Corporation And Subsidiaries | Amortizable intangible assets
Current Assets:
Amortizable intangible assets, net of accumulated amortization	25,315
Cable television franchises | Cablevision Systems Corporation And Subsidiaries
Current Assets:
Indefinite-lived cable television franchises	$ 731,848

CVC - CONSOLIDATED BALANCE SH_2

CVC - CONSOLIDATED BALANCE SHEETS (Parentheticals) $ in Thousands	Dec. 31, 2015USD ($)$ / sharesshares
Cablevision Systems Corporation And Subsidiaries
Accounts receivable, trade allowance for doubtful accounts | $	$ 6,039
Property, plant and equipment, accumulated depreciation | $	9,625,348
Amortizable intangible assets, accumulated amortization | $	60,310
Accumulated amortization | $	$ 8,150
Preferred stock, par value (in dollars per share) | $ / shares	$ 0.01
Preferred stock, shares authorized (in shares)	50,000,000
Preferred stock, shares issued (in shares)	0
Cablevision Systems Corporation And Subsidiaries | CNYG Class A Common Stock
Common stock, par value (in dollars per share) | $ / shares	$ 0.01
Common stock, shares authorized (in shares)	800,000,000
Common stock, shares issued (in shares)	304,196,703
Common stock, shares outstanding (in shares)	222,572,210
Treasury stock (in shares)	81,624,493
Cablevision Systems Corporation And Subsidiaries | CNYG Class B Common Stock
Common stock, par value (in dollars per share) | $ / shares	$ 0.01
Common stock, shares authorized (in shares)	320,000,000
Common stock, shares issued (in shares)	54,137,673
Common stock, shares outstanding (in shares)	54,137,673
Cablevision Systems Corporation And Subsidiaries | Rmg Class Common Stock
Common stock, par value (in dollars per share) | $ / shares	$ 0.01
Common stock, shares authorized (in shares)	600,000,000
Common stock, shares issued (in shares)	0
Cablevision Systems Corporation And Subsidiaries | RMG Class B Common Stock
Common stock, par value (in dollars per share) | $ / shares	$ 0.01
Common stock, shares authorized (in shares)	160,000,000
Common stock, shares issued (in shares)	0
Customer relationships | Cablevision Systems Corporation And Subsidiaries
Amortizable intangible assets, accumulated amortization | $	$ 27,778
Amortizable intangible assets | Cablevision Systems Corporation And Subsidiaries
Amortizable intangible assets, accumulated amortization | $	$ 32,532

CVC - CONSOLIDATED STATEMENT OF

CVC - CONSOLIDATED STATEMENT OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 20, 2016	Dec. 31, 2015
Cablevision Systems Corporation And Subsidiaries
Revenue (including revenue from affiliates of $2,205 and $1,086, respectively) (See Note 14)	$ 3,137,604	$ 6,545,545
Operating expenses:
Programming and other direct costs	1,088,555	2,269,290
Other operating expenses	1,136,970	2,546,319
Restructuring and other expense	22,223	16,213
Depreciation and amortization (including impairments)	414,550	865,252
Total operating expenses	2,662,298	5,697,074
Operating income	475,306	848,471
Other income (expense):
Interest expense (including interest expense to affiliates and related parties of $90,405 and $112,712, respectively) (See Note 14)	(287,098)	(585,764)
Interest income	1,590	925
Gain on investments, net	129,990	(30,208)
Loss on equity derivative contracts, net	(36,283)	104,927
Loss on extinguishment of debt and write-off of deferred financing costs (including $513,723 related to affiliates and related parties in 2017) (See Note 14)	0	(1,735)
Other income, net	4,855	6,045
Total other income (expense)	(186,946)	(505,810)
Loss before income taxes	288,360	342,661
Income tax benefit	(124,848)	(154,872)
Income from continuing operations, net of income taxes	163,512	187,789
Income (loss) from discontinued operations, net of income taxes	0	(12,541)
Net income (loss)	163,512	175,248
Net loss (income) attributable to noncontrolling interests	236	201
Net income (loss) attributable to Altice USA, Inc. stockholders	$ 163,748	$ 175,449
Basic income (loss) per share attributable to Cablevision Systems Corporation stockholder(s):
Income from continuing operations, net of income taxes (in dollars per share)	$ 0.60	$ 0.70
Income (loss) from discontinued operations, net of income taxes (in dollars per share)	0	(0.05)
Net income (in dollars per share)	$ 0.60	$ 0.65
Basic weighted average common shares (in thousands) (in shares)	272,035	269,388
Diluted income (loss) per share attributable to Cablevision Systems Corporation stockholder(s):
Income from continuing operations, net of income taxes (in dollars per share)	$ 0.58	$ 0.68
Income (loss) from discontinued operations, net of income taxes (in dollars per share)	0	(0.05)
Net income (in dollars per share)	$ 0.58	$ 0.63
Diluted weighted average common shares (in thousands)	280,199	276,339
Amounts attributable to Cablevision Systems Corporation stockholder(s):
Income from continuing operations, net of income taxes	$ 163,748	$ 187,990
Income (loss) from discontinued operations, net of income taxes	0	(12,541)
Net income (loss) attributable to Altice USA, Inc. stockholders	$ 163,748	$ 175,449
Cash dividends declared per common share (in dollars per share)	$ 0	$ 0.45

CVC - CONSOLIDATED STATEMENT _2

CVC - CONSOLIDATED STATEMENT OF OPERATIONS (Parenthetical) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 20, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenue from affiliates		$ 2,575	$ 1,100	$ 1,086
Programming and other direct costs from affiliates		7,261	4,176	1,947
Related Party Transaction, Other Operating Expense		$ 16,307	$ 33,140	$ 18,854
Cablevision Systems Corporation And Subsidiaries
Revenue from affiliates	$ 2,088				$ 5,343
Programming and other direct costs from affiliates	84,636				176,909
Related Party Transaction, Other Operating Expense	$ 2,182				$ 5,372

CVC - CONDENSED CONSOLIDATED ST

CVC - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 20, 2016	Dec. 31, 2015
Cablevision Systems Corporation And Subsidiaries
Net income	$ 163,512	$ 175,248
Defined benefit pension and postretirement plans (see Note 13):
Unrecognized actuarial gain	68	2,694
Applicable income taxes	(28)	(1,106)
Unrecognized gain (loss) arising during period, net of income taxes	40	1,588
Amortization of actuarial losses, net included in net periodic benefit cost	929	1,224
Applicable income taxes	(388)	(502)
Amortization of actuarial losses, net included in net periodic benefit cost, net of income taxes	541	722
Settlement income included in net periodic benefit cost	1,655	3,822
Applicable income taxes	(679)	(1,569)
Curtailment loss, net of settlement losses included in net periodic benefit cost, net of income taxes	976	2,253
Other comprehensive gain (loss)	1,557	4,563
Comprehensive income (loss)	165,069	179,811
Comprehensive income attributable to noncontrolling interests	236	201
Comprehensive income (loss) attributable to Altice USA, Inc. stockholders	$ 165,305	$ 180,012

CVC - CONSOLIDATED STATEMENT _3

CVC - CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Paid-in Capital	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income	Total Stockholders' Equity (Deficiency)	Non-controlling Interest	Cablevision Systems Corporation And Subsidiaries	Cablevision Systems Corporation And SubsidiariesPaid-in Capital	Cablevision Systems Corporation And SubsidiariesRetained Earnings (Accumulated Deficit)	Cablevision Systems Corporation And SubsidiariesTreasury Stock	Cablevision Systems Corporation And SubsidiariesAccumulated Other Comprehensive Income	Cablevision Systems Corporation And SubsidiariesTotal Stockholders' Equity (Deficiency)	Cablevision Systems Corporation And SubsidiariesNon-controlling Interest	CNYG Class A Common StockCablevision Systems Corporation And SubsidiariesCommon Stock	CNYG Class B Common StockCablevision Systems Corporation And SubsidiariesCommon Stock
Beginning balance at Dec. 31, 2014							$ (5,040,690)	$ 823,103	$ (4,234,860)	$ (1,591,021)	$ (42,235)	$ (5,041,469)	$ 779	$ 3,003	$ 541
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to stockholders							175,449		175,449			175,449
Net income attributable to noncontrolling interests							(146)						(146)
Pension and postretirement plan liability adjustments, net of income taxes							4,563				4,563	4,563
Proceeds from exercise of options and issuance of restricted shares							18,687	18,648				18,687		39
Recognition of equity-based stock compensation arrangements							60,817	60,817				60,817
Treasury stock acquired from forfeiture and acquisition of restricted shares							(19,141)	5		(19,146)		(19,141)
Excess tax benefit on share-based awards							5,694	5,694				5,694
Dividends on CNYG Class A and CNYG Class B common stock							(124,752)	(124,752)				(124,752)
Adjustments to/Contributions from noncontrolling interests							7,935	8,836				8,836	(901)
Ending balance at Dec. 31, 2015	$ 2,108,080	$ 2,252,028	$ (143,948)		$ 2,108,080		(4,911,584)	792,351	(4,059,411)	(1,610,167)	(37,672)	(4,911,316)	(268)	3,042	541
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to stockholders							163,748		163,748			163,748
Net income attributable to noncontrolling interests							(236)						(236)
Pension and postretirement plan liability adjustments, net of income taxes							1,557				1,557	1,557
Proceeds from exercise of options and issuance of restricted shares							14,559	14,544				14,559		15
Recognition of equity-based stock compensation arrangements							24,997	24,997				24,997
Treasury stock acquired from forfeiture and acquisition of restricted shares							(41,469)	1		(41,470)		(41,469)
Tax withholding associated with shares issued for equity-based compensation							(6,034)	(6,030)				(6,034)		(4)
Dividends on CNYG Class A and CNYG Class B common stock							(82)	(82)				(82)
Adjustments to/Contributions from noncontrolling interests							240						240
Ending balance at Jun. 20, 2016							(4,754,140)	825,945	(3,895,663)	(1,651,637)	(36,115)	(4,753,876)	(264)	3,053	541
Beginning balance at Dec. 31, 2015	2,108,080	2,252,028	(143,948)		2,108,080		$ (4,911,584)	$ 792,351	$ (4,059,411)	$ (1,610,167)	$ (37,672)	$ (4,911,316)	$ (268)	$ 3,042	$ 541
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to stockholders	(832,030)		(832,030)		(832,030)
Recognition of equity-based stock compensation arrangements	14,368	14,368			14,368
Ending balance at Dec. 31, 2016	2,042,508	3,003,554	(963,312)	$ 1,979	2,042,221	$ 287
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to stockholders	1,493,177		1,493,177		1,493,177
Recognition of equity-based stock compensation arrangements	57,430	57,430			57,430
Ending balance at Dec. 31, 2017	5,504,753	4,665,229	840,636	(10,022)	5,503,214	1,539
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss) attributable to stockholders	18,833		18,833		18,833
Recognition of equity-based stock compensation arrangements	59,812	59,812			59,812
Dividends on CNYG Class A and CNYG Class B common stock	(1,499,935)
Ending balance at Dec. 31, 2018	$ 3,680,236	$ 3,423,803	$ 251,830	$ (11,783)	$ 3,670,941	$ 9,295

CVC - CONSOLIDATED STATEMENT _4

CVC - CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 20, 2016	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net income		$ (831,479)
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization (including impairments)		1,700,306
Loss (gain) on investments, net		(141,896)
Loss (gain) on equity derivative contracts, net		53,696
Loss on extinguishment of debt and write-off of deferred financing costs		127,649
Amortization of deferred financing costs and discounts (premiums) on indebtedness		27,799
Share-based compensation expense		14,368
Provision for doubtful accounts		53,249
Excess tax benefit on share-based awards		(31)
Change in assets and liabilities, net of effects of acquisitions and dispositions:
Accounts receivable, trade		(58,760)
Prepaid expenses and other assets		56,395
Amounts due from and due to affiliates		41,351
Accounts payable		(11,814)
Accrued liabilities		312,871
Deferred revenue		9,835
Net cash provided by operating activities		1,184,455
Cash flows from investing activities:
Capital expenditures		(625,541)
Proceeds related to sale of equipment, including costs of disposal		5,885
Decrease (increase) in other investments		(4,608)
Additions to other intangible assets		(106)
Net cash used in investing activities		(9,599,319)
Cash flows from financing activities:
Repayment of credit facility debt		(9,133,543)
Proceeds from issuance of senior notes	$ 0	1,310,000	$ 0
Proceeds from collateralized indebtedness		179,388
Repayment of collateralized indebtedness and related derivative contracts, net		(143,102)
Redemption And Repurchase Of Senior Notes, Net Premiums And Fees	0		0
Repayment of notes payable		0
Principal payments on capital lease obligations		(18,837)
Additions to deferred financing costs		(203,712)
Excess tax benefit on share-based awards		31
Net cash provided by (used in) financing activities		131,421
Cablevision Systems Corporation And Subsidiaries
Cash flows from operating activities:
Net income	163,512		175,248
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Loss (income) from discontinued operations, net of income taxes	0		12,541
Depreciation and amortization (including impairments)	414,550		865,252
Loss (gain) on investments, net	(129,990)		30,208
Loss (gain) on equity derivative contracts, net	36,283		(104,927)
Loss on extinguishment of debt and write-off of deferred financing costs	0		1,735
Amortization of deferred financing costs and discounts (premiums) on indebtedness	11,673		23,764
Share-based compensation expense	24,778		60,321
Settlement loss and amortization of actuarial losses related to pension and postretirement plans	2,584		5,046
Deferred income taxes	116,150		133,396
Provision for doubtful accounts	13,240		35,802
Excess tax benefit on share-based awards	(82)		(5,694)
Change in assets and liabilities, net of effects of acquisitions and dispositions:
Accounts receivable, trade	(18,162)		(24,760)
Prepaid expenses and other assets	(844)		38,860
Amounts due from and due to affiliates	(5,082)		1,043
Accounts payable	36,147		6,896
Accrued liabilities	(160,937)		1,200
Deferred revenue	(9,726)		2,156
Net cash provided by operating activities	494,094		1,258,087
Cash flows from investing activities:
Capital expenditures	(330,131)		(816,396)
Proceeds related to sale of equipment, including costs of disposal	1,106		4,407
Decrease (increase) in other investments	610		(7,779)
Additions to other intangible assets	(1,709)		(8,035)
Net cash used in investing activities	(330,124)		(827,803)
Cash flows from financing activities:
Repayment of credit facility debt	(14,953)		(260,321)
Proceeds from collateralized indebtedness	337,149		774,703
Repayment of collateralized indebtedness and related derivative contracts, net	(281,594)		(639,237)
Repayment of notes payable	(1,291)		(2,458)
Proceeds from stock option exercises	14,411		18,727
Tax withholding associated with shares issued for equity-based awards	(6,034)		0
Dividend distributions to common stockholders	(4,066)		(125,170)
Principal payments on capital lease obligations	(11,552)		(20,250)
Deemed repurchases of restricted stock	(41,469)		(19,141)
Additions to deferred financing costs	0		(250)
Payment for purchase of noncontrolling interest	0		(8,300)
Contributions from noncontrolling interests, net	240
Distributions to noncontrolling interests, net			(901)
Excess tax benefit on share-based awards	82		5,694
Net cash provided by (used in) financing activities	(9,077)		(276,904)
Net increase in cash and cash equivalents from continuing operations	154,893		153,380
Cash flows of discontinued operations:
Net cash used in operating activities	(21,000)		(484)
Net cash provided by (used in) investing activities	0		(30)
Net increase (decrease) in cash and cash equivalents from discontinued operations	(21,000)		(514)
Cash and cash equivalents at beginning of period	1,003,279	$ 1,003,279	850,413
Cash and cash equivalents at end of year	$ 1,137,172		$ 1,003,279

DESCRIPTION OF BUSINESS AND REL

DESCRIPTION OF BUSINESS AND RELATED MATTERS	12 Months Ended
	Dec. 31, 2018
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" or the "Company") was incorporated in Delaware on September 14, 2015 . Prior to the distribution discussed below, Altice USA was majority-owned by Altice N.V., a public company with limited liability (naamloze vennootshcap) under Dutch law. Since the completion of the Altice N.V. distribution discussed below, the Company is no longer majority-owned by Altice N.V. Altice N.V. changed its name to Altice Europe N.V. ("Altice Europe") upon completion of the distribution discussed below. The Company provides broadband communications and video services in the United States and markets its services under two brands: Optimum, in the New York metropolitan area, and Suddenlink, principally in markets in the south-central United States. It delivers broadband, pay television, telephony services, proprietary content and advertising services to residential and business customers. As these brands are managed on a consolidated basis, the Company classifies its operations in one segment. Altice Europe, through a subsidiary, acquired Cequel Corporation ("Cequel" or "Suddenlink") on December 21, 2015 ("Cequel Acquisition") and Cequel was contributed to Altice USA on June 9, 2016 . Altice USA had no operations of its own other than the issuance of debt prior to the contribution of Cequel on June 9, 2016 by Altice Europe. The results of operations of Cequel for the year ended December 31, 2016 have been included in the results of operations of Altice USA for the same period, as Cequel was under common control with Altice USA. Altice USA acquired Cablevision Systems Corporation ("Cablevision" or "Optimum") on June 21, 2016 (see discussion below) and the results of operations of Cablevision are included with the results of operations of Cequel since the date of acquisition. The accompanying combined consolidated financial statements ("consolidated financial statements") include the accounts of the Company and all subsidiaries in which the Company has a controlling interest and gives effect to the ATS Acquisition and the i24 Acquisition discussed below. All significant inter-company accounts and transactions have been eliminated in consolidation. The accompanying consolidated financial statements also reflect the retrospective adoption of Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers and ASU No. 2017‑07 Compensation-Retirement Benefits (Topic 715). See Note 4 for further details of the impact on the Company's historical financial statements. Acquisition of Cablevision Systems Corporation On June 21, 2016 (the "Cablevision Acquisition Date"), pursuant to the Agreement and Plan of Merger (the "Merger Agreement"), dated as of September 16, 2015 , by and among Cablevision, Altice Europe, Neptune Merger Sub Corp., a wholly-owned subsidiary of Altice Europe ("Merger Sub"), Merger Sub merged with and into Cablevision, with Cablevision surviving the merger (the "Cablevision Acquisition"). In connection with the Cablevision Acquisition, each outstanding share of the Cablevision NY Group Class A common stock, par value $0.01 per share ("CNYG Class A Shares"), and Cablevision NY Group Class B common stock, par value $0.01 per share ("CNYG Class B Shares", and together with the CNYG Class A Shares, the "Shares"), and together with the Cablevision NY Group Class A common stock, the "Shares" other than Shares owned by Cablevision, Altice Europe or any of their respective wholly-owned subsidiaries, in each case not held on behalf of third parties in a fiduciary capacity, received $34.90 in cash without interest, less applicable tax withholdings (the "Cablevision Acquisition Consideration"). Pursuant to an agreement, dated December 21, 2015 , by and among CVC 2 B.V., CIE Management IX Limited, for and on behalf of the limited partnerships BC European Capital IX-1 through 11 and Canada Pension Plan Investment Board, certain affiliates of BCP and CPPIB (the "Co-Investors") funded approximately $1,000,000 toward the payment of the aggregate Per Share Cablevision Acquisition Consideration, and indirectly acquired approximately 30% of the Shares of Cablevision. Also in connection with the Cablevision Acquisition, outstanding equity-based awards granted under Cablevision’s equity plans were cancelled and converted into cash based upon the $34.90 per Share Cablevision Acquisition Consideration in accordance with the original terms of the awards. The total consideration for the outstanding CNYG Class A Shares, the outstanding CNYG Class B Shares, and the equity-based awards amounted to $9,958,323 . In connection with the Cablevision Acquisition, in October 2015, Neptune Finco Corp. ("Finco"), an indirect wholly-owned subsidiary of Altice Europe formed to complete the financing described herein and the merger with CSC Holdings, LLC ("CSC Holdings"), a wholly-owned subsidiary of Cablevision, borrowed an aggregate principal amount of $3,800,000 under a term loan facility (the "Term Credit Facility") and entered into revolving loan commitments in an aggregate principal amount of $2,000,000 (the "Revolving Credit Facility" and, together with the Term Credit Facility, the "Credit Facilities"). Finco also issued $1,800,000 aggregate principal amount of 10.125% senior notes due 2023 (the "2023 Notes"), $2,000,000 aggregate principal amount of 10.875% senior notes due 2025 (the "2025 Notes"), and $1,000,000 aggregate principal amount of 6.625% senior guaranteed notes due 2025 (the "2025 Guaranteed Notes") (collectively the "Cablevision Acquisition Notes"). On June 21, 2016 , immediately following the Cablevision Acquisition, Finco merged with and into CSC Holdings, with CSC Holdings surviving the merger (the "CSC Holdings Merger"), and the Cablevision Acquisition Notes and the Credit Facilities became obligations of CSC Holdings. On June 21, 2016 , in connection with the Cablevision Acquisition, the Company issued notes payable to affiliates and related parties aggregating $1,750,000 , of which $875,000 bore interest at 10.75% and $875,000 bore interest at 11% . See Note 11 for a discussion regarding the conversion of these notes payable to shares of the Company's common stock prior to the consummation of the IPO. The Cablevision Acquisition was accounted for as a business combination in accordance with ASC Topic 805. Accordingly, the Company stepped up 100% of the assets and liabilities assumed to their fair value at the Cablevision Acquisition Date. See Note 5 for further details. Acquisition of Altice Technical Services US Corp Altice Technical Services US Corp. ("ATS") was formed to provide network construction and maintenance services and commercial and residential installations, disconnections, and maintenance. During the second quarter of 2017, a substantial portion of the Company's technical workforce at Cablevision either accepted employment with ATS or became employees of ATS and ATS commenced operations and began to perform services for the Company. A substantial portion of the Cequel technical workforce became employees of ATS in December 2017. Additionally, in the second quarter of 2017, the Company entered into an Independent Contractor Agreement with ATS that governed the terms of the services provided to the Company and entered into a Transition Services Agreement for the use of the Company's resources to provide various overhead functions to ATS, including accounting, legal and human resources and for the use of certain facilities, vehicles and technician tools during a transitional period. The Transition Services Agreement required ATS to reimburse the Company for its cost to provide such services. In January 2018, the Company acquired 70% of the equity interests in ATS for $1.00 (the "ATS Acquisition") and the Company became the owner of 100% of the equity interests in ATS in March 2018. ATS was previously owned by Altice Europe and a member of ATS's management through a holding company. As the acquisition is a combination of businesses under common control, the Company combined the results of operations and related assets and liabilities of ATS for all periods since its formation. See Note 4 for the impact of the ATS Acquisition on the Company's consolidated balance sheet and statement of operations as of and for the year ended December 31, 2017. In connection with the ATS Acquisition, the Company recorded goodwill of $23,101 , representing the amount previously transferred to ATS. Acquisition of i24NEWS In April 2018, Altice Europe transferred its ownership of i24 US and i24 Europe ("i24NEWS"), Altice Europe's 24/7 international news and current affairs channels to the Company for minimal consideration (the "i24 Acquisition"). As the acquisition was a combination of businesses under common control, the Company combined the results of operations and related assets and liabilities of i24NEWS as of April 1, 2018. Operating results for periods prior to April 1, 2018 and the balance sheet as of December 31, 2017 have not been revised to reflect the i24 Acquisition as the impact was deemed immaterial. Initial Public Offering In June 2017, the Company completed its initial public offering ("IPO") of 71,724,139 shares of its Class A common stock ( 12,068,966 shares sold by the Company and 59,655,173 shares sold by existing stockholders) at a price to the public of $30.00 per share, including the underwriters full exercise of their option to purchase 7,781,110 shares to cover overallotments. At the date of the IPO, Altice Europe owned approximately 70.2% of the Company's issued and outstanding common stock, which represented approximately 98.2% of the voting power of the Company's outstanding common stock. The Company’s Class A common stock began trading on June 22, 2017, on the New York Stock Exchange under the symbol "ATUS". In connection with the sale of its Class A common stock, the Company received proceeds of approximately $362,069 , before deducting the underwriting discount and expenses directly related to the issuance of the securities of $12,998 . The Company did not receive any proceeds from the sale of shares by the selling stockholders. In July 2017, the Company used approximately $350,120 of the proceeds to fund the redemption of $315,779 principal amount of 10.875% senior notes that mature in 2025 issued by CSC Holdings, an indirect wholly-owned subsidiary of the Company, and the related call premium of approximately $34,341 . The following organizational transactions were consummated prior to the IPO: • the Company amended and restated its certificate of incorporation to, among other things, provide for Class A common stock, Class B common stock and Class C common stock; • BC Partners LLP ("BCP") and Canada Pension Plan Investment Board (‘‘CPPIB and together with BCP, the‘‘Co-Investors’’) and Uppernext S.C.S.p. ("Uppernext"), an entity controlled by Mr. Patrick Drahi (founder and controlling stockholder of Altice Europe), exchanged their indirect ownership interest in the Company for shares of the Company’s common stock; • Neptune Management LP (‘‘Management LP’’) redeemed its Class B units for shares of the Company’s common stock that it received from the redemption of its Class B units in Neptune Holding US LP; • the Company converted $525,000 aggregate principal amount of notes issued by the Company to the Co-Investors (together with accrued and unpaid interest and applicable premium) into shares of the Company’s common stock at the IPO price (see Note 11 for further details); • $1,225,000 aggregate principal amount of notes issued by the Company to a subsidiary of Altice Europe (together with accrued and unpaid interest and applicable premium) was transferred to CVC 3 B.V., an indirect subsidiary of Altice Europe ("CVC 3") and then the Company converted such notes into shares of the Company’s common stock at the IPO price (see Note 11 for further details); • the Co-Investors, Neptune Holding US LP, A4 S.A. (an entity controlled by the family of Mr. Drahi), and former Class B unitholders of Management LP (including Uppernext) exchanged shares of the Company’s common stock for new shares of the Company’s Class A common stock; and • CVC 3 and A4 S.A. exchanged shares of the Company’s common stock for new shares of the Company’s Class B common stock. Altice Europe Distribution On June 8, 2018, Altice Europe distributed substantially all of its equity interest in the Company through a distribution in kind to holders of Altice Europe's common shares A and common shares B (the “Distribution”). The Distribution took place by way of a special distribution in kind by Altice Europe of its 67.2% interest in the Company to Altice Europe shareholders. Each shareholder of Altice Europe on May 23, 2018, the Distribution record date, received 0.4163 shares of the Company's common stock for every share held by such shareholder in Altice Europe. Between May 24, 2018 and June 4, 2018, each Altice Europe shareholder was given the opportunity to elect the percentage of shares of the Company's Class A common stock and shares of the Company's Class B common stock such shareholder would receive in the Distribution, whereby the number of shares of the Company's Class B common stock to be distributed was subject to a cap of 50% of the total shares of the Company's common stock being distributed (the “Class B Cap”). Because the Class B Cap had been exceeded, the shares of the Company's Class B common stock delivered to Altice Europe’s shareholders of record who elected to receive them were subject to proration, and such shareholders received shares of the Company's Class A common stock. Immediately following the Distribution, there were 489,384,523 shares of Altice USA Class A common stock and 247,684,443 shares of Altice USA Class B common stock outstanding. Prior to Altice Europe's announcement of the Distribution, the Board of Directors of Altice USA, acting through its independent directors, approved the payment of a $2.035 dividend to all shareholders of record on May 22, 2018. The payment of the dividend, aggregating $1,499,935 , was made on June 6, 2018, and was funded with cash at CSC Holdings LLC, a wholly-owned subsidiary of Cablevision, from financings completed in January 2018, and cash generated from operations at Cequel. In connection with the payment of the dividend, the Company recorded a decrease in retained earnings of $536,224 , representing the cumulative earnings through the payment date, and a decrease in paid in capital of $963,711 . In connection with the Distribution, the Management Advisory and Consulting Services Agreement with Altice Europe which provided certain consulting, advisory and other services was terminated. See Note 16 for further details. In addition, the Board of Directors of Altice USA also authorized a share repurchase program of $2.0 billion , effective June 8, 2018. Under the repurchase program, 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. From inception through December 31, 2018, the Company repurchased an aggregate of 28,028,680 shares for a total purchase price of approximately $500,000 . These acquired shares were retired and the cost for these shares was recorded in paid in capital in the Company's consolidated balance sheet. As of December 31, 2018, the Company had approximately $1,500,000 of availability remaining under its stock repurchase program and had 709,040,286 combined Class A and Class B shares outstanding.

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Summary of Significant Accounting Policies Revenue Recognition Residential Services The Company derives revenue through monthly charges to residential customers of its pay television, broadband, and telephony services, including installation services. In addition, the Company derives revenue from digital video recorder ("DVR"), video-on-demand ("VOD"), pay-per-view, and home shopping commissions which are reflected in "Residential pay TV" revenues. The Company recognizes pay television, broadband, and telephony revenues as the services are provided to a customer on a monthly basis. Revenue from the sale of bundled services at a discounted rate is allocated to each product based on the standalone selling price of each performance obligation within the bundled offer. The standalone selling price requires judgment and is typically determined based on the current prices at which the separate services are sold by the Company. Installation revenue for the Company's residential services is deferred and recognized over the benefit period, which is estimated to be less than one year. The estimated benefit period takes into account both quantitative and qualitative factors including the significance of average installation fees to total recurring revenue per customer. 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 years ended December 31, 2018 , 2017 and 2016 , the amount of franchise fees and certain other taxes and fees included as a component of revenue aggregated $257,467 , $259,075 and $154,732 , respectively. Business and Wholesale Services The Company derives revenue from the sale of products and services to both large enterprise and small and medium-sized business ("SMB") customers, including broadband, telephony, networking, and pay television services reflected in "Business services and wholesale" revenues. The Company's business services also include Ethernet, data transport, and IP-based virtual private networks. The Company also provides managed services to businesses, including hosted telephony services (cloud based SIP-based private branch exchange), managed Wi-Fi, managed desktop and server backup and managed collaboration services including audio and web conferencing. The Company also offers fiber-to-the-tower services to wireless carriers for cell tower backhaul and enable wireline communications service providers to connect to customers that their own networks do not reach. The Company recognizes revenues for these services as the services are provided to a customer on a monthly basis. Substantially all of our SMB customers are billed monthly and large enterprise customers are billed in accordance with the terms of their contracts which is typically also on a monthly basis. Contracts with large enterprise customers typically range from three to five years. Installation revenue related to our large enterprise customers is deferred and recognized over the average contract term. Installation revenue related to SMB customers is deferred and recognized over the benefit period, which is less than a year. The estimated benefit period for SMB customers takes into account both quantitative and qualitative factors including the significance of average installation fees to total recurring revenue per customer. Advertising As part of the agreements under which the Company acquires pay television programming, the Company typically receives an allocation of scheduled advertising time during such programming into which the Company's cable systems can insert commercials. In several of the markets in which the Company operates, it has entered into agreements commonly referred to as interconnects with other cable operators to jointly sell local advertising. In some of these markets, the Company represents the advertising sales efforts of other cable operators; in other markets, other cable operators represent the Company. Advertising revenues are recognized when commercials are aired. Arrangements in which the Company controls the sale of advertising and acts as the principal to the transaction, the Company recognizes revenue earned from the advertising customer on a gross basis and the amount remitted to the distributor as an operating expense. Arrangements in which the Company does not control the sale of advertising and acts as an agent to the transaction, the Company recognizes revenue net of any fee remitted to the distributor. The Company's advanced advertising businesses provide data-driven, audience-based advertising solutions using advanced analytics tools that provide granular measurement of consumer groups, accurate hyper-local ratings and other insights into target audience behavior not available through traditional sample-based measurement services. Revenue earned from the Company's advanced advertising businesses are recognized when services are provided. Other Revenues derived from other sources are recognized when services are provided or events occur. Contract Assets Incremental costs incurred in obtaining a contract with a customer are deferred and recorded as a contract asset if the period of benefit is expected to be greater than one year. Sales commissions for enterprise and certain SMB customers are deferred and amortized over the average contract term. For sales commission expenses related to residential and SMB customers with a term of one year or less, the Company is utilizing the practical expedient and is recognizing the costs when incurred. Cost of fulfilling a contract with a customer are deferred and recorded as a contract asset if they generate or enhance resources of the Company that will be used in satisfying future performance obligations and are expected to be recovered. Installation costs related to residential and SMB customers that are not capitalized as part of the initial deployment of new customer premise equipment are expensed as incurred pursuant to industry-specific guidance. The following table provides information about contracts assets and contract liabilities related to contracts with customers: December 31, 2018 2017 Contract assets (a) $ 26,405 $ 24,329 Deferred revenue (b) 190,056 117,679 (a) Contract assets include primarily sales commissions for enterprise customers that are deferred and amortized over the average contract term. (b) Deferred revenue represents payments received from customers for services that have yet to be provided and installation revenue which is deferred and recognized over the benefit period. The majority of the Company's deferred revenue represents payments for services for up to one month in advance from residential and SMB customers which is realized within the following month as services are performed. 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 to five years, and services may only be terminated in accordance with the contractual terms. The following table presents the composition of revenue: Years Ended December 31, 2018 2017 2016 Residential: Pay TV $ 4,156,428 $ 4,274,122 $ 2,788,873 Broadband 2,887,455 2,608,595 1,651,574 Telephony 652,895 700,765 465,771 Business services and wholesale 1,362,758 1,298,213 819,541 Advertising 482,649 391,866 252,049 Other 24,423 33,389 39,404 Total revenue $ 9,566,608 $ 9,306,950 $ 6,017,212 Multiple-Element Transactions In the normal course of business, the Company may enter into multiple-element transactions where it is simultaneously both a customer and a vendor with the same counterparty or in which it purchases multiple products and/or services, or settles outstanding items contemporaneously with the purchase of a product or service, from a single counterparty. The Company's policy for accounting for each transaction negotiated contemporaneously is to record each deliverable of the transaction based on its best estimate of selling price in a manner consistent with that used to determine the price to sell each deliverable on a standalone basis. In determining the fair value of the respective deliverable, the Company will utilize quoted market prices (as available), historical transactions or comparable transactions. Technical and Operating Expenses Costs of revenue related to sales of services are classified as "programming and other direct costs" in the accompanying consolidated statements of operations. Programming Costs Programming expenses related to the Company's pay television service represent fees paid to programming distributors to license the programming distributed to customers. This programming is acquired generally under multi-year distribution agreements, with rates usually based on the number of customers that receive the programming. If there are periods when an existing distribution agreement has expired and the parties have not finalized negotiations of either a renewal of that agreement or a new agreement for certain periods of time, the Company continues to carry and pay for these services until execution of definitive replacement agreements or renewals. The amount of programming expense recorded during the interim period is based on the Company's estimates of the ultimate contractual agreement expected to be reached, which is based on several factors, including previous contractual rates, customary rate increases and the current status of negotiations. Such estimates are adjusted as negotiations progress until new programming terms are finalized. In addition, the Company has received, or may receive, incentives from programming distributors for carriage of the distributors' programming. The Company generally recognizes these incentives as a reduction of programming costs in "programming and other direct costs", generally over the term of the distribution agreement. Advertising Expenses Advertising costs are charged to expense when incurred and are reflected in "other operating expenses" in the accompanying consolidated statements of operations. Advertising costs amounted to $240,273 , $224,120 and $135,513 for the years ended December 31, 2018 , 2017 and 2016 , respectively. Share-Based Compensation Share-based compensation expense is based on the fair value of the portion of share-based payment awards that are ultimately expected to vest. Share-based compensation cost relates to awards of units in a carried unit plan and options. For carried interest units, the Company measures share-based compensation cost at the grant date fair value and recognizes the expense over the requisite service period or when it is probable any related performance condition will be met. For carried interest units with graded vesting requirement, compensation cost is recognized on an accelerated method under the graded vesting method over the requisite service period for the carried interest unit. Carried interest units that vest entirely at the end of the vesting requirement are expensed on a straight-line basis. The Company estimated the fair value of carried interest units using an option pricing model. Key inputs that were used in applying the option pricing method were total equity value, equity volatility, risk free rate and time to liquidity event. The estimate of total equity value was determined using a combination of the income approach, which incorporated cash flow projections that were discounted at an appropriate rate, and the market approach, which involved applying a market multiple to the Company’s projected operating results. The Company estimated volatility based on the historical equity volatility of comparable publicly-traded companies. Subsequent to the IPO, such subjective valuations and estimates were no longer necessary as the Company relied on the market price of the Company’s common stock to determine the fair value of share-based compensation awards. See Note 15 to the consolidated financial statements for additional information about our share-based compensation. For stock option awards, the Company recognizes compensation expense based on the estimated grant date fair value using the Black-Scholes valuation model and amortizes the fair value to share-based compensation expense over the requisite service period. Income Taxes The Company's provision for income taxes is based on current period income, changes in deferred tax assets and liabilities and changes in estimates with regard to uncertain tax positions. Deferred tax assets are subject to an ongoing assessment of realizability. The Company provides deferred taxes for the outside basis difference of its investment in partnerships. Cash and Cash Equivalents The Company's cash investments are placed with money market funds and financial institutions that are investment grade as rated by S&P Global Ratings and Moody's Investors Service. The Company selects money market funds that predominantly invest in marketable, direct obligations issued or guaranteed by the United States government or its agencies, commercial paper, fully collateralized repurchase agreements, certificates of deposit, and time deposits. The Company considers the balance of its investment in funds that substantially hold securities that mature within three months or less from the date the fund purchases these securities to be cash equivalents. The carrying amount of cash and cash equivalents either approximates fair value due to the short-term maturity of these instruments or are at fair value. Accounts Receivable Accounts receivable are recorded at net realizable value. The Company periodically assesses the adequacy of valuation allowances for uncollectible accounts receivable by evaluating the collectability of outstanding receivables and general factors such as historical collection experience, length of time individual receivables are past due, and the economic and competitive environment. Investments Investment securities and investment securities pledged as collateral are classified as trading securities and are stated at fair value with realized and unrealized holding gains and losses included in the consolidated statements of operations. Long-Lived Assets and Amortizable Intangible Assets Property, plant and equipment, including construction materials, are carried at cost, and include all direct costs and certain indirect costs associated with the construction of cable systems, and the costs of new equipment installations. Equipment under capital leases is recorded at the present value of the total minimum lease payments. Depreciation on equipment is calculated on the straight-line basis over the estimated useful lives of the assets or, with respect to equipment under capital leases and leasehold improvements, amortized over the shorter of the lease term or the assets' useful lives and reported in depreciation and amortization (including impairments) in the consolidated statements of operations. The Company capitalizes certain internal and external costs incurred to acquire or develop internal-use software. Capitalized software costs are amortized over the estimated useful life of the software and reported in depreciation and amortization. Customer relationships, trade names and other intangibles established in connection with acquisitions that are finite-lived are amortized in a manner that reflects the pattern in which the projected net cash inflows to the Company are expected to occur, such as the sum of the years' digits method, or when such pattern does not exist, using the straight-line basis over their respective estimated useful lives. The Company reviews its long-lived assets (property, plant and equipment, and intangible assets subject to amortization that arose from acquisitions) for impairment whenever events or circumstances indicate that the carrying amount of an asset may not be recoverable. If the sum of the expected cash flows, undiscounted and without interest, is less than the carrying amount of the asset, an impairment loss is recognized as the amount by which the carrying amount of the asset exceeds its fair value. Goodwill and Indefinite-Lived Intangible Assets Goodwill and the value of franchises acquired in purchase business combinations which have indefinite useful lives are not amortized. Rather, such assets are tested for impairment annually or upon the occurrence of a triggering event. The Company assesses qualitative factors for its reporting units that carry goodwill. If the qualitative assessment results in a conclusion that it is more likely than not that the fair value of a reporting unit exceeds the carrying value, then no further testing is performed for that reporting unit. When the qualitative assessment is not used, or if the qualitative assessment is not conclusive and it is necessary to calculate the fair value of a reporting unit, then the impairment analysis for goodwill is performed at the reporting unit level using a two-step approach. The first step of the goodwill impairment test is used to identify potential impairment by comparing the fair value of the reporting unit with its carrying amount, including goodwill utilizing an enterprise-value based premise approach. If the carrying amount of the reporting unit exceeds its fair value, the second step of the goodwill impairment test is performed to measure the amount of goodwill impairment loss, if any. The second step of the goodwill impairment test compares the implied fair value of the reporting unit's goodwill with the carrying amount of that goodwill. If the carrying amount of the reporting unit's goodwill exceeds the implied fair value of that goodwill, an impairment loss is recognized in an amount equal to that excess. The implied fair value of goodwill is determined in the same manner as the amount of goodwill which would be recognized in a business combination. The Company assesses qualitative factors to determine whether it is necessary to perform the one-step quantitative identifiable indefinite-lived intangible assets impairment test. This quantitative test is required only if the Company concludes that it is more likely than not that a unit of accounting’s fair value is less than its carrying amount. When the qualitative assessment is not used, or if the qualitative assessment is not conclusive, the impairment test for other intangible assets not subject to amortization requires a comparison of the fair value of the intangible asset with its carrying value. If the carrying value of the indefinite-lived intangible asset exceeds its fair value, an impairment loss is recognized in an amount equal to that excess. Deferred Financing Costs Deferred financing costs are being amortized to interest expense using the effective interest method over the terms of the related debt. Derivative Financial Instruments The Company accounts for derivative financial instruments as either assets or liabilities measured at fair value. The Company uses derivative instruments to manage its exposure to market risks from changes in certain equity prices and interest rates and does not hold or issue derivative instruments for speculative or trading purposes. These derivative instruments are not designated as hedges, and changes in the fair values of these derivatives are recognized in the consolidated statements of operations as gain (loss) on derivative contracts or gain (loss) on interest rate swap contracts. Commitments and Contingencies Liabilities for loss contingencies arising from claims, assessments, litigation, fines and penalties and other sources are recorded when the Company believes it is probable that a liability has been incurred and the amount of the contingency can be reasonably estimated. Foreign Currency Certain of the Company's i24NEWS subsidiaries are located outside the United States. The functional currency for these subsidiaries is determined based on the primary economic environment in which the subsidiary operates. Revenues and expenses for these subsidiaries are translated into U.S. dollars using rates that approximate those in effect during the period while the assets and liabilities are translated into U.S. dollars using exchange rates in effect at the end of each period. The resulting gains and losses from these translations are recognized in cumulative translation adjustment included in accumulated other comprehensive loss in stockholders’ equity on the consolidated balance sheets. Common Stock of Altice USA Each holder of Class A common stock has one vote per share while holders of Class B common stock have twenty-five votes per share. Class B shares can be converted to Class A common stock at anytime with a conversion ratio of one Class A common share for one Class B common share. The following table provides details of the Company's shares of common stock outstanding: Shares of Common Stock Outstanding Class A Common Stock Class B Common Stock Balance at June 21, 2017 and December 31, 2017 246,982,292 490,086,674 Altice Europe Distribution on June 8, 2018 (see Note 1) 242,402,231 (242,402,231 ) Conversion of Class B common stock to Class A common stock 34,708,184 (34,708,184 ) Retirement of Class A common shares in connection with the Company's stock repurchase plan (see Note 1) (28,028,680 ) — Balance at December 31, 2018 496,064,027 212,976,259 Dividends and Distributions The Company may pay dividends on its capital stock only from net profits and surplus as determined under Delaware law. If dividends are paid on the Altice USA common stock, holders of the Altice USA Class A common stock and Altice USA Class B common stock are entitled to receive dividends, and other distributions in cash, stock or property, equally on a per share basis, except that stock dividends with respect to Altice USA Class A common stock may be paid only with shares of Altice USA Class A common stock and stock dividends with respect to Altice USA Class B common stock may be paid only with shares of Altice USA Class B common stock. The Company's indentures restrict the amount of dividends and distributions in respect of any equity interest that can be made. In 2018, the Company paid dividends of $1,499,935 (see discussion in Note 1). Prior to the Company's IPO, the Company declared and paid cash distributions to stockholders aggregating $839,700 in the second quarter of 2017. In 2016, the Company declared cash distributions of $445,176 of which $365,559 were paid in 2016 and $79,617 were paid in the first quarter of 2017. 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. Diluted net loss per common share attributable to Altice USA stockholders excludes the effects of common stock equivalents as they are anti-dilutive. The weighted average number of shares used to compute basic and diluted net income (loss) per share reflect the retroactive impact of the organizational transactions, discussed in Note 1, that occurred prior to the Company's IPO. The weighted average shares used in the calculation of the diluted net income per share attributable to Altice USA stockholders for the years ended December 31, 2018 and 2017 is the same as the weighted average shares used in the calculation of basic net income per share as the weighted average common stock equivalents totaling approximately 6,292,000 shares and 14,000 shares, respectively, were antidilutive. Concentrations of Credit Risk Financial instruments that may potentially subject the Company to a concentration of credit risk consist primarily of cash and cash equivalents and trade account receivables. The Company monitors the financial institutions and money market funds where it invests its cash and cash equivalents with diversification among counterparties to mitigate exposure to any single financial institution. The Company's emphasis is primarily on safety of principal and liquidity and secondarily on maximizing the yield on its investments. Management believes that no significant concentration of credit risk exists with respect to its cash and cash equivalents because of its assessment of the creditworthiness and financial viability of the respective financial institutions. The Company did not have a single customer that represented 10% or more of its consolidated revenues for the years ended December 31, 2018 , 2017 and 2016 or 10% or more of its consolidated net trade receivables at December 31, 2018 , and 2017 , respectively. Use of Estimates in Preparation of Financial Statements The preparation of financial statements in conformity with U.S. generally accepted accounting principles ("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 revenues and expenses during the reporting period. Actual results could differ from those estimates. See Note 13 for a discussion of fair value estimates. Reclassifications Certain reclassifications have been made to the 2017 and 2016 financial statements to conform to the 2018 presentation.

ACCOUNTING PRONOUNCEMENTS

ACCOUNTING PRONOUNCEMENTS	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
ACCOUNTING PRONOUNCEMENTS	ACCOUNTING PRONOUNCEMENTS Recently Adopted Accounting Pronouncements In February 2018, the FASB issued ASU No. 2018-02, Income Statement-Reporting Comprehensive Income (Topic 220) Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. The primary provision of ASU No. 2018-02 allows for the reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act. ASU No. 2018-02 also requires certain disclosures about stranded tax effects. ASU No. 2018-02 is effective for the Company on January 1, 2019, with early adoption permitted and will be applied either in the period of adoption or retrospectively to each period (or periods) in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act is recognized. The Company elected to adopt ASU No. 2018-02 during the first quarter of 2018. The adoption resulted in the reclassification of stranded tax amounts of $2,163 associated with net unrecognized losses from the Company's pension plans from accumulated other comprehensive loss to retained earnings. In May 2017, the FASB issued ASU No. 2017-09, Compensation-Stock Compensation (Topic 718). ASU No. 2017-09 provides clarity and guidance on which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. ASU No. 2017-09 was adopted by the Company on January 1, 2018 and it had no impact to the Company's consolidated financial statements. In March 2017, the FASB issued ASU No. 2017-07, Compensation-Retirement Benefits (Topic 715). ASU No. 2017-07 requires that an employer disaggregate the service cost component from the other components of net benefit cost. It also provides guidance on how to present the service cost component and the other components of net benefit cost in the income statement and what component of net benefit cost is eligible for capitalization. ASU No. 2017‑07 was adopted by the Company on January 1, 2018 and was applied retrospectively. As a result of the adoption, the Company reclassified the non-service cost components of the Company's pension expense for the year ended December 2017and 2016 from other operating expenses to other income (expense), net. The Company elected to apply the practical expedient which allowed it to reclassify amounts disclosed previously in the benefits plan note as the basis for applying retrospective presentation for comparative periods, as the Company determined it was impracticable to disaggregate the cost components for amounts capitalized and amortized in those periods. See Note 4 for information on the impact of the adoption of ASU No. 2017-07. In January 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805), Clarifying the Definition of a Business, which amends Topic 805 to interpret the definition of a business by adding guidance to assist in evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The Company adopted the new guidance on January 1, 2018 and it had no impact to the Company's consolidated financial statements. In December 2016, the FASB issued ASU No. 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers, in order to clarify the Codification and to correct any unintended application of the guidance. The amendments in this update affected the guidance in ASC 606. ASC 606 was adopted by the Company on January 1, 2018 on a full retrospective basis, which required the Company to reflect the impact of the updated guidance for all periods presented. The adoption of ASC 606 did not have a material impact on the Company’s financial position or results of operations. See Note 4 for information on the impact of the adoption of ASC 606. In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash, which requires that the statement of cash flows disclose the change during the period in the total of cash, cash equivalents, restricted cash and restricted cash equivalents. Restricted cash should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of period total amounts shown on the statement of cash flows. ASU No. 2016-18 provides specific guidance on the presentation of restricted cash in the statement of cash flows. ASU No. 2016-18 was adopted by the Company on January 1, 2018 and was applied retrospectively for all periods presented. In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments which clarifies how entities should classify certain cash receipts and cash payments on the statement of cash flows. ASU No. 2016-15 also clarifies how the predominance principle should be applied when cash receipts and cash payments have aspects of more than one class of cash flows. The Company adopted the new guidance on January 1, 2018 and it had no impact to the Company's consolidated financial statements. In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10), Recognition and Measurement of Financial Assets and Financial Liabilities. ASU No. 2016-01 modifies how entities measure certain equity investments and also modifies the recognition of changes in the fair value of financial liabilities measured under the fair value option. Entities will be required to measure equity investments that do not result in consolidation and are not accounted for under the equity method at fair value and recognize any changes in fair value in net income. For financial liabilities measured using the fair value option, entities will be required to record changes in fair value caused by a change in instrument-specific credit risk (own credit risk) separately in other comprehensive income. ASU No. 2016-01 was adopted by the Company on January 1, 2018 and it had no impact to the Company's consolidated financial statements. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers ("ASC 606"), requiring an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. ASC 606 replaced most existing revenue recognition guidance in GAAP (See Note 4). Recently Issued But Not Yet Adopted Accounting Pronouncements In August 2018, the FASB issued ASU No. 2018-14, Changes to the Disclosure Requirements for Defined Benefit Plans, which amends ASC 715 to clarify certain disclosure requirements related to defined benefit pension and other postretirement plans. ASU 2018-14 becomes effective for the Company on January 1, 2022, although early adoption is permitted. The Company does not expect the adoption of ASU 2017-14 to have a material impact on its consolidated financial statements. Also in August 2018, the FASB issued ASU No. 2018-15, Customer’s Accounting for Implementation Costs in a Cloud Computing Arrangement That Is a Service Contract, which requires upfront implementation costs incurred in a cloud computing arrangement (or hosting arrangement) that is a service contract to be amortized to hosting expense over the term of the arrangement, beginning when the module or component of the hosting arrangement is ready for its intended use. ASU No. 2018-14 becomes effective for the Company on January 1, 2020, although early adoption is permitted. The Company is currently in the process of evaluating the impact that the adoption of ASU No. 2018-15 will have on its consolidated financial statements. In January 2017, the FASB issued ASU No. 2017-04, Intangibles-Goodwill and Other (Topic 350). ASU No. 2017-04 simplifies the subsequent measurement of goodwill by removing the second step of the two‑step impairment test. The amendment requires an entity to perform its annual, or interim goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity still has the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary. ASU No. 2017-04 becomes effective for the Company on January 1, 2020 with early adoption permitted and will be applied prospectively. In February 2016, the FASB issued ASU No. 2016-02, Leases, which increases transparency and comparability by recognizing a lessee’s rights and obligations resulting from leases by recording them on the balance sheet as lease assets and lease liabilities. The new guidance became effective for the Company on January 1, 2019. The Company will adopt the new guidance using the modified retrospective approach with a cumulative-effect adjustment recorded at the beginning of the period of adoption. The Company will elect the package of practical expedients permitted within the standard, which allow an entity to forgo reassessing (1) whether a contract contains a lease, (2) classification of leases, and (3) whether capitalized costs associated with a lease meet the definition of initial direct costs. Also, the Company will elect the expedient allowing an entity to use hindsight to determine the lease term and impairment of right of-use assets and the expedient related to land easements which allows the Company not to retrospectively treat land easements as leases; however, must apply lease accounting prospectively to land easements if they meet the definition of a lease. While the Company is continuing to assess the impacts of ASU No. 2016-02, it estimates that the adoption of ASU No. 2016-02 will result in the recognition of right-of-use assets and lease liabilities for operating leases of approximately 1% of its total assets on its consolidated balance sheet, with no material impact to its consolidated statements of operations. CHANGE IN ACCOUNTING POLICIES AND ATS ACQUISITION Adoption of ASC 606 - Revenue from Contracts with Customers On January 1, 2018, the Company adopted the guidance pursuant to ASC 606. The Company elected to apply the guidance on a full retrospective basis, which required the Company to reflect the impact of the updated guidance for all periods presented. The adoption of the guidance resulted in the deferral of certain installation revenue, the deferral of certain commission expenses, and a reduction of revenue due to the reclassification of certain third-party giveaways and incentives from operating expense. Additionally, the Company made changes in the composition of revenue resulting from the allocation of value related to bundled services sold to residential customers at a discount. Installation Services Revenue Pursuant to ASC 606, the Company's installation services revenue is deferred and recognized over the benefit period. For residential customers, the benefit period is less than one year. For business and wholesale customers, the benefit period is the contract term. Prior to the adoption of ASC 606, the Company recognized installation services revenue for residential and SMB customers when installations were completed. As a result of the deferral of installation services revenue for residential and SMB customers, the Company recognized contract liabilities of $6,978 and recorded a cumulative effect adjustment of $5,093 (net of tax of $1,885 ) to retained earnings. The accounting for installation services revenue related to business and wholesale customers has not changed. Commission Expenses Pursuant to ASC 606, the Company defers commission expenses related to obtaining a contract with a customer when the expected amortization is greater than one year and amortizes these costs over the average contract term. For commission expenses related to customer contracts with a term of one year or less, the Company is utilizing the practical expedient and is recognizing the costs when incurred. Prior to the adoption of ASC 606, the Company recognized commission expenses related to the sale of its services when incurred. As a result of the change in the timing of recognition of these commission expenses, the Company recognized contract assets of $24,329 and recorded a cumulative effect adjustment of $17,759 (net of tax of $6,570 ) to retained earnings. Third-Party Product Giveaways and Incentives When the Company acts as the agent in providing certain product giveaways or incentives, revenue is recorded net of the costs of the giveaways and incentives. For the periods prior to January 1, 2018, costs for the giveaways and incentives recorded in other operating expense have been reclassified to revenue. Bundled Services The Company provides bundled services at a discounted rate to its customers. Under ASC 606, revenue should be allocated to separate performance obligations within a bundled offering based on the relative stand-alone selling price of each service within the bundle. In connection with the adoption of ASC 606, the Company revised the amounts allocated to each performance obligation within its bundled offerings which reduced previously reported revenue for telephony services and increased previously reported revenue allocated to pay television and broadband services. Adoption of ASU No. 2017-07 - Compensation-Retirement Benefits (Topic 715) On January 1, 2018, the Company adopted the guidance pursuant to ASU No. 2017‑07. ASU No. 2017‑07 requires that an employer disaggregate the service cost component from the other components of net benefit cost. In connection with the adoption of ASU No. 2017‑07, the Company retroactively reclassified certain pension costs from other operating expenses to other income (expense), net. The adoption of ASU No. 2017-07 had no impact on the Company's consolidated balance sheet. Acquisition of Altice Technical Services US Corp As discussed in Note 1, the Company completed the ATS Acquisition in the first quarter of 2018. ATS was previously owned by Altice Europe and a member of ATS's management through a holding company. As the acquisition is a combination of businesses under common control, the Company combined the results of operations and related assets and liabilities of ATS for all periods since the formation of ATS, including goodwill of $23,101 , representing the amount previously transferred to ATS. The following table summarizes the impact of adopting ASC 606 and the impact of the ATS Acquisition on the Company's consolidated balance sheet: December 31, 2017 As Reported Impact of ASC 606 Impact of ATS Acquisition As Adjusted Cash and cash equivalents $ 273,329 $ — $ 56,519 $ 329,848 Other current assets 580,231 14,068 (20,548 ) 573,751 Property, plant and equipment, net 6,063,829 — (40,003 ) 6,023,826 Goodwill 7,996,760 — 23,101 8,019,861 Other assets, long-term 19,861,076 10,261 (6,541 ) 19,864,796 Total assets $ 34,775,225 $ 24,329 $ 12,528 $ 34,812,082 Current liabilities $ 2,492,983 $ 6,978 $ 20,401 $ 2,520,362 Deferred tax liability 4,775,115 4,685 (10,514 ) 4,769,286 Liabilities, long-term 21,779,997 — 6,394 21,786,391 Total liabilities 29,048,095 11,663 16,281 29,076,039 Redeemable equity 231,290 — — 231,290 Paid-in-capital 4,642,128 — 23,101 4,665,229 Retained earnings 854,824 12,666 (26,854 ) 840,636 Total stockholders' equity 5,495,840 12,666 (3,753 ) 5,504,753 Total liabilities and stockholders' equity $ 34,775,225 $ 24,329 $ 12,528 $ 34,812,082 The following table summarizes the impact of adopting ASC 606 and ASU No. 2017-07 and the impact of the ATS Acquisition on the Company's consolidated statements of operations: Year Ended December 31, 2017 As Reported Impact of ASC 606 Impact of ASU No. 2017-07 Impact of ATS Acquisition As Adjusted Residential: Pay TV $ 4,214,745 $ 59,878 $ — $ (501 ) $ 4,274,122 Broadband 2,563,772 45,192 — (369 ) 2,608,595 Telephony 823,981 (122,981 ) — (235 ) 700,765 Business services and wholesale 1,298,817 (604 ) — — 1,298,213 Advertising 391,866 — — — 391,866 Other 33,389 — — — 33,389 Total revenue 9,326,570 (18,515 ) — (1,105 ) 9,306,950 Programming and other direct costs 3,035,655 — — — 3,035,655 Other operating expenses 2,342,655 (18,515 ) (11,863 ) 35,038 2,347,315 Restructuring and other expense 152,401 — — — 152,401 Depreciation and amortization 2,930,475 — — 96 2,930,571 Operating income 865,384 — 11,863 (36,239 ) 841,008 Other expense, net (2,196,733 ) — (11,863 ) — (2,208,596 ) Loss before income taxes (1,331,349 ) — — (36,239 ) (1,367,588 ) Income tax benefit 2,852,967 — — 9,385 2,862,352 Net income $ 1,521,618 $ — $ — $ (26,854 ) $ 1,494,764 Year Ended December 31, 2016 As Reported Impact of ASC 606 Impact of ASU No. 2017-07 As Adjusted Residential: Pay TV $ 2,759,216 $ 29,657 $ — $ 2,788,873 Broadband 1,617,029 34,545 — 1,651,574 Telephony 529,973 (64,202 ) — 465,771 Business services and wholesale 819,541 — — 819,541 Advertising 252,049 — — 252,049 Other 39,404 — — 39,404 Total revenue 6,017,212 — — 6,017,212 Programming and other direct costs 1,911,230 — — 1,911,230 Other operating expenses 1,705,615 — (3,143 ) 1,702,472 Restructuring and other expense 240,395 — — 240,395 Depreciation and amortization 1,700,306 — — 1,700,306 Operating income 459,666 — 3,143 462,809 Other expense, net (1,550,811 ) — (3,143 ) (1,553,954 ) Loss before income taxes (1,091,145 ) — — (1,091,145 ) Income tax benefit 259,666 — — 259,666 Net loss $ (831,479 ) $ — $ — $ (831,479 )

CHANGE IN ACCOUNTING POLICIES A

CHANGE IN ACCOUNTING POLICIES AND ATS ACQUISITION	12 Months Ended
	Dec. 31, 2018
Accounting Changes and Error Corrections [Abstract]
CHANGE IN ACCOUNTING POLICIES AND ATS ACQUISITION	ACCOUNTING PRONOUNCEMENTS Recently Adopted Accounting Pronouncements In February 2018, the FASB issued ASU No. 2018-02, Income Statement-Reporting Comprehensive Income (Topic 220) Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. The primary provision of ASU No. 2018-02 allows for the reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act. ASU No. 2018-02 also requires certain disclosures about stranded tax effects. ASU No. 2018-02 is effective for the Company on January 1, 2019, with early adoption permitted and will be applied either in the period of adoption or retrospectively to each period (or periods) in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act is recognized. The Company elected to adopt ASU No. 2018-02 during the first quarter of 2018. The adoption resulted in the reclassification of stranded tax amounts of $2,163 associated with net unrecognized losses from the Company's pension plans from accumulated other comprehensive loss to retained earnings. In May 2017, the FASB issued ASU No. 2017-09, Compensation-Stock Compensation (Topic 718). ASU No. 2017-09 provides clarity and guidance on which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. ASU No. 2017-09 was adopted by the Company on January 1, 2018 and it had no impact to the Company's consolidated financial statements. In March 2017, the FASB issued ASU No. 2017-07, Compensation-Retirement Benefits (Topic 715). ASU No. 2017-07 requires that an employer disaggregate the service cost component from the other components of net benefit cost. It also provides guidance on how to present the service cost component and the other components of net benefit cost in the income statement and what component of net benefit cost is eligible for capitalization. ASU No. 2017‑07 was adopted by the Company on January 1, 2018 and was applied retrospectively. As a result of the adoption, the Company reclassified the non-service cost components of the Company's pension expense for the year ended December 2017and 2016 from other operating expenses to other income (expense), net. The Company elected to apply the practical expedient which allowed it to reclassify amounts disclosed previously in the benefits plan note as the basis for applying retrospective presentation for comparative periods, as the Company determined it was impracticable to disaggregate the cost components for amounts capitalized and amortized in those periods. See Note 4 for information on the impact of the adoption of ASU No. 2017-07. In January 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805), Clarifying the Definition of a Business, which amends Topic 805 to interpret the definition of a business by adding guidance to assist in evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The Company adopted the new guidance on January 1, 2018 and it had no impact to the Company's consolidated financial statements. In December 2016, the FASB issued ASU No. 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers, in order to clarify the Codification and to correct any unintended application of the guidance. The amendments in this update affected the guidance in ASC 606. ASC 606 was adopted by the Company on January 1, 2018 on a full retrospective basis, which required the Company to reflect the impact of the updated guidance for all periods presented. The adoption of ASC 606 did not have a material impact on the Company’s financial position or results of operations. See Note 4 for information on the impact of the adoption of ASC 606. In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash, which requires that the statement of cash flows disclose the change during the period in the total of cash, cash equivalents, restricted cash and restricted cash equivalents. Restricted cash should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of period total amounts shown on the statement of cash flows. ASU No. 2016-18 provides specific guidance on the presentation of restricted cash in the statement of cash flows. ASU No. 2016-18 was adopted by the Company on January 1, 2018 and was applied retrospectively for all periods presented. In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments which clarifies how entities should classify certain cash receipts and cash payments on the statement of cash flows. ASU No. 2016-15 also clarifies how the predominance principle should be applied when cash receipts and cash payments have aspects of more than one class of cash flows. The Company adopted the new guidance on January 1, 2018 and it had no impact to the Company's consolidated financial statements. In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10), Recognition and Measurement of Financial Assets and Financial Liabilities. ASU No. 2016-01 modifies how entities measure certain equity investments and also modifies the recognition of changes in the fair value of financial liabilities measured under the fair value option. Entities will be required to measure equity investments that do not result in consolidation and are not accounted for under the equity method at fair value and recognize any changes in fair value in net income. For financial liabilities measured using the fair value option, entities will be required to record changes in fair value caused by a change in instrument-specific credit risk (own credit risk) separately in other comprehensive income. ASU No. 2016-01 was adopted by the Company on January 1, 2018 and it had no impact to the Company's consolidated financial statements. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers ("ASC 606"), requiring an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. ASC 606 replaced most existing revenue recognition guidance in GAAP (See Note 4). Recently Issued But Not Yet Adopted Accounting Pronouncements In August 2018, the FASB issued ASU No. 2018-14, Changes to the Disclosure Requirements for Defined Benefit Plans, which amends ASC 715 to clarify certain disclosure requirements related to defined benefit pension and other postretirement plans. ASU 2018-14 becomes effective for the Company on January 1, 2022, although early adoption is permitted. The Company does not expect the adoption of ASU 2017-14 to have a material impact on its consolidated financial statements. Also in August 2018, the FASB issued ASU No. 2018-15, Customer’s Accounting for Implementation Costs in a Cloud Computing Arrangement That Is a Service Contract, which requires upfront implementation costs incurred in a cloud computing arrangement (or hosting arrangement) that is a service contract to be amortized to hosting expense over the term of the arrangement, beginning when the module or component of the hosting arrangement is ready for its intended use. ASU No. 2018-14 becomes effective for the Company on January 1, 2020, although early adoption is permitted. The Company is currently in the process of evaluating the impact that the adoption of ASU No. 2018-15 will have on its consolidated financial statements. In January 2017, the FASB issued ASU No. 2017-04, Intangibles-Goodwill and Other (Topic 350). ASU No. 2017-04 simplifies the subsequent measurement of goodwill by removing the second step of the two‑step impairment test. The amendment requires an entity to perform its annual, or interim goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity still has the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary. ASU No. 2017-04 becomes effective for the Company on January 1, 2020 with early adoption permitted and will be applied prospectively. In February 2016, the FASB issued ASU No. 2016-02, Leases, which increases transparency and comparability by recognizing a lessee’s rights and obligations resulting from leases by recording them on the balance sheet as lease assets and lease liabilities. The new guidance became effective for the Company on January 1, 2019. The Company will adopt the new guidance using the modified retrospective approach with a cumulative-effect adjustment recorded at the beginning of the period of adoption. The Company will elect the package of practical expedients permitted within the standard, which allow an entity to forgo reassessing (1) whether a contract contains a lease, (2) classification of leases, and (3) whether capitalized costs associated with a lease meet the definition of initial direct costs. Also, the Company will elect the expedient allowing an entity to use hindsight to determine the lease term and impairment of right of-use assets and the expedient related to land easements which allows the Company not to retrospectively treat land easements as leases; however, must apply lease accounting prospectively to land easements if they meet the definition of a lease. While the Company is continuing to assess the impacts of ASU No. 2016-02, it estimates that the adoption of ASU No. 2016-02 will result in the recognition of right-of-use assets and lease liabilities for operating leases of approximately 1% of its total assets on its consolidated balance sheet, with no material impact to its consolidated statements of operations. CHANGE IN ACCOUNTING POLICIES AND ATS ACQUISITION Adoption of ASC 606 - Revenue from Contracts with Customers On January 1, 2018, the Company adopted the guidance pursuant to ASC 606. The Company elected to apply the guidance on a full retrospective basis, which required the Company to reflect the impact of the updated guidance for all periods presented. The adoption of the guidance resulted in the deferral of certain installation revenue, the deferral of certain commission expenses, and a reduction of revenue due to the reclassification of certain third-party giveaways and incentives from operating expense. Additionally, the Company made changes in the composition of revenue resulting from the allocation of value related to bundled services sold to residential customers at a discount. Installation Services Revenue Pursuant to ASC 606, the Company's installation services revenue is deferred and recognized over the benefit period. For residential customers, the benefit period is less than one year. For business and wholesale customers, the benefit period is the contract term. Prior to the adoption of ASC 606, the Company recognized installation services revenue for residential and SMB customers when installations were completed. As a result of the deferral of installation services revenue for residential and SMB customers, the Company recognized contract liabilities of $6,978 and recorded a cumulative effect adjustment of $5,093 (net of tax of $1,885 ) to retained earnings. The accounting for installation services revenue related to business and wholesale customers has not changed. Commission Expenses Pursuant to ASC 606, the Company defers commission expenses related to obtaining a contract with a customer when the expected amortization is greater than one year and amortizes these costs over the average contract term. For commission expenses related to customer contracts with a term of one year or less, the Company is utilizing the practical expedient and is recognizing the costs when incurred. Prior to the adoption of ASC 606, the Company recognized commission expenses related to the sale of its services when incurred. As a result of the change in the timing of recognition of these commission expenses, the Company recognized contract assets of $24,329 and recorded a cumulative effect adjustment of $17,759 (net of tax of $6,570 ) to retained earnings. Third-Party Product Giveaways and Incentives When the Company acts as the agent in providing certain product giveaways or incentives, revenue is recorded net of the costs of the giveaways and incentives. For the periods prior to January 1, 2018, costs for the giveaways and incentives recorded in other operating expense have been reclassified to revenue. Bundled Services The Company provides bundled services at a discounted rate to its customers. Under ASC 606, revenue should be allocated to separate performance obligations within a bundled offering based on the relative stand-alone selling price of each service within the bundle. In connection with the adoption of ASC 606, the Company revised the amounts allocated to each performance obligation within its bundled offerings which reduced previously reported revenue for telephony services and increased previously reported revenue allocated to pay television and broadband services. Adoption of ASU No. 2017-07 - Compensation-Retirement Benefits (Topic 715) On January 1, 2018, the Company adopted the guidance pursuant to ASU No. 2017‑07. ASU No. 2017‑07 requires that an employer disaggregate the service cost component from the other components of net benefit cost. In connection with the adoption of ASU No. 2017‑07, the Company retroactively reclassified certain pension costs from other operating expenses to other income (expense), net. The adoption of ASU No. 2017-07 had no impact on the Company's consolidated balance sheet. Acquisition of Altice Technical Services US Corp As discussed in Note 1, the Company completed the ATS Acquisition in the first quarter of 2018. ATS was previously owned by Altice Europe and a member of ATS's management through a holding company. As the acquisition is a combination of businesses under common control, the Company combined the results of operations and related assets and liabilities of ATS for all periods since the formation of ATS, including goodwill of $23,101 , representing the amount previously transferred to ATS. The following table summarizes the impact of adopting ASC 606 and the impact of the ATS Acquisition on the Company's consolidated balance sheet: December 31, 2017 As Reported Impact of ASC 606 Impact of ATS Acquisition As Adjusted Cash and cash equivalents $ 273,329 $ — $ 56,519 $ 329,848 Other current assets 580,231 14,068 (20,548 ) 573,751 Property, plant and equipment, net 6,063,829 — (40,003 ) 6,023,826 Goodwill 7,996,760 — 23,101 8,019,861 Other assets, long-term 19,861,076 10,261 (6,541 ) 19,864,796 Total assets $ 34,775,225 $ 24,329 $ 12,528 $ 34,812,082 Current liabilities $ 2,492,983 $ 6,978 $ 20,401 $ 2,520,362 Deferred tax liability 4,775,115 4,685 (10,514 ) 4,769,286 Liabilities, long-term 21,779,997 — 6,394 21,786,391 Total liabilities 29,048,095 11,663 16,281 29,076,039 Redeemable equity 231,290 — — 231,290 Paid-in-capital 4,642,128 — 23,101 4,665,229 Retained earnings 854,824 12,666 (26,854 ) 840,636 Total stockholders' equity 5,495,840 12,666 (3,753 ) 5,504,753 Total liabilities and stockholders' equity $ 34,775,225 $ 24,329 $ 12,528 $ 34,812,082 The following table summarizes the impact of adopting ASC 606 and ASU No. 2017-07 and the impact of the ATS Acquisition on the Company's consolidated statements of operations: Year Ended December 31, 2017 As Reported Impact of ASC 606 Impact of ASU No. 2017-07 Impact of ATS Acquisition As Adjusted Residential: Pay TV $ 4,214,745 $ 59,878 $ — $ (501 ) $ 4,274,122 Broadband 2,563,772 45,192 — (369 ) 2,608,595 Telephony 823,981 (122,981 ) — (235 ) 700,765 Business services and wholesale 1,298,817 (604 ) — — 1,298,213 Advertising 391,866 — — — 391,866 Other 33,389 — — — 33,389 Total revenue 9,326,570 (18,515 ) — (1,105 ) 9,306,950 Programming and other direct costs 3,035,655 — — — 3,035,655 Other operating expenses 2,342,655 (18,515 ) (11,863 ) 35,038 2,347,315 Restructuring and other expense 152,401 — — — 152,401 Depreciation and amortization 2,930,475 — — 96 2,930,571 Operating income 865,384 — 11,863 (36,239 ) 841,008 Other expense, net (2,196,733 ) — (11,863 ) — (2,208,596 ) Loss before income taxes (1,331,349 ) — — (36,239 ) (1,367,588 ) Income tax benefit 2,852,967 — — 9,385 2,862,352 Net income $ 1,521,618 $ — $ — $ (26,854 ) $ 1,494,764 Year Ended December 31, 2016 As Reported Impact of ASC 606 Impact of ASU No. 2017-07 As Adjusted Residential: Pay TV $ 2,759,216 $ 29,657 $ — $ 2,788,873 Broadband 1,617,029 34,545 — 1,651,574 Telephony 529,973 (64,202 ) — 465,771 Business services and wholesale 819,541 — — 819,541 Advertising 252,049 — — 252,049 Other 39,404 — — 39,404 Total revenue 6,017,212 — — 6,017,212 Programming and other direct costs 1,911,230 — — 1,911,230 Other operating expenses 1,705,615 — (3,143 ) 1,702,472 Restructuring and other expense 240,395 — — 240,395 Depreciation and amortization 1,700,306 — — 1,700,306 Operating income 459,666 — 3,143 462,809 Other expense, net (1,550,811 ) — (3,143 ) (1,553,954 ) Loss before income taxes (1,091,145 ) — — (1,091,145 ) Income tax benefit 259,666 — — 259,666 Net loss $ (831,479 ) $ — $ — $ (831,479 )

BUSINESS COMBINATIONS

BUSINESS COMBINATIONS	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
BUSINESS COMBINATIONS	BUSINESS COMBINATIONS ATS Acquisition As the ATS acquisition discussed in Note 1 is a combination of businesses under common control, the Company combined the results of operations and related assets and liabilities of ATS for all periods since its formation. See Note 4 for the impact of the ATS Acquisition on the Company's consolidated balance sheet and statement of operations as of and for the year ended December 31, 2017. Cablevision Acquisition As discussed in Note 1, the Company completed the Cablevision Acquisition on June 21, 2016 . The acquisition was accounted for as a business combination in accordance with ASC Topic 805. Accordingly, the Company recorded the fair value of the assets and liabilities assumed at the date of acquisition. The following table provides the allocation of the total purchase price of $9,958,323 to the identifiable tangible and intangible assets and liabilities of Cablevision based on their respective fair values. The remaining useful lives represent the period over which acquired tangible and intangible assets with a finite life are being depreciated or amortized. Fair Values Estimated Useful Lives Current assets $ 1,923,071 Accounts receivable 271,305 Property, plant and equipment 4,864,621 2-18 years Goodwill 5,842,172 Indefinite-lived cable television franchises 8,113,575 Indefinite-lived Customer relationships 4,850,000 8 to 18 years Trade names (a) 1,010,000 12 years Amortizable intangible assets 23,296 1-15 years Other non-current assets 748,998 Current liabilities (2,311,201 ) Long-term debt (8,355,386 ) Deferred income taxes. (6,832,773 ) Other non-current liabilities (189,355 ) Total $ 9,958,323 (a) See Note 10 for additional information regarding a change in the remaining estimated useful lives of the Company's trade names. The fair value of customer relationships and cable television franchises were valued using derivations of the "income" approach. The future expected earnings from these assets were discounted to their present value equivalent. Trade names were valued using the relief from royalty method, which is based on the present value of the royalty payments avoided as a result of the company owning the intangible asset. The basis for the valuation methods was the Company’s projections. These projections were based on management’s assumptions including among others, penetration rates for pay television, broadband, and telephony; revenue growth rates; operating margins; and capital expenditures. The assumptions are derived based on the Company’s and its peers’ historical operating performance adjusted for current and expected competitive and economic factors surrounding the cable industry. The discount rates used in the analysis are intended to reflect the risk inherent in the projected future cash flows generated by the respective intangible asset. The value is highly dependent on the achievement of the future financial results contemplated in the projections. The estimates and assumptions made in the valuation are inherently subject to significant uncertainties, many of which are beyond the Company's control, and there is no assurance that these results can be achieved. The primary assumptions for which there is a reasonable possibility of the occurrence of a variation that would have significantly affected the value include the assumptions regarding revenue growth, programming expense growth rates, the amount and timing of capital expenditures and the discount rate utilized. In establishing fair value for the vast majority of the acquired property, plant and equipment, the cost approach was utilized. The cost approach considers the amount required to replace an asset by constructing or purchasing a new asset with similar utility, then adjusts the value in consideration of physical depreciation, and functional and economic obsolescence as of the appraisal date. The cost approach relies on management’s assumptions regarding current material and labor costs required to rebuild and repurchase significant components of property, plant and equipment along with assumptions regarding the age and estimated useful lives of property, plant and equipment. The estimates of expected useful lives take into consideration the effects of contractual relationships, customer attrition, eventual development of new technologies and market competition. Long-term debt assumed was valued using quoted market prices (Level 2). The carrying value of most other assets and liabilities approximated fair value as of the acquisition date. As a result of applying business combination accounting, the Company recorded goodwill, which represented the excess of organization value over amounts assigned to the other identifiable tangible and intangible assets arising from expectations of future operational performance and cash generation. The following table presents the unaudited pro forma revenue and net loss for the period presented as if the Cablevision Acquisition had occurred on January 1, 2016: Year Ended December 31, 2016 Revenue $ 9,154,816 Net loss $ (721,257 ) The pro forma results presented above include the impact of additional amortization expense related to the identifiable intangible assets recorded in connection with the Cablevision Acquisition, additional depreciation expense related to the fair value adjustment to property, plant and equipment and the incremental interest resulting from the issuance of debt to fund the Cablevision Acquisition, net of the reversal of interest and amortization of deferred financing costs related to credit facilities that were repaid on the date of the Cablevision Acquisition and the accretion/amortization of fair value adjustments associated with the long-term debt acquired. Other Acquisitions In connection with certain acquisitions completed in 2018, the Company recorded goodwill of $7,608 which represents the excess of the estimated purchase price of approximately $9,945 (based on current probability of contingent consideration) over the net book value of assets acquired. In connection with certain acquisitions completed in the first and fourth quarters of 2017, the Company recorded amortizable intangibles of $45,000 relating to customer relationships and $9,400 relating to other amortizable intangibles. The Company recorded goodwill of $23,936 , which represents the excess of the estimated purchase price of approximately $80,000 over the net book value of assets acquired.

SUPPLEMENTAL CASH FLOW INFORMAT

SUPPLEMENTAL CASH FLOW INFORMATION	12 Months Ended
	Dec. 31, 2018
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: Years Ended December 31, 2018 2017 2016 Non-Cash Investing and Financing Activities: Conversion of notes payable to affiliates and related parties of $1,750,000 (together with accrued and unpaid interest and applicable premium) to common stock (See Note 11) $ — $ 2,264,252 $ — Property and equipment accrued but unpaid 213,936 171,604 155,653 Distributions declared but not paid — — 79,617 Leasehold improvements paid by landlord 350 3,998 — Notes payable issued to vendor for the purchase of equipment 95,394 40,131 12,449 Capital lease obligations 13,548 9,385 — Deferred financing costs accrued but unpaid 1,005 — 2,570 Contingent consideration for acquisitions 6,195 32,233 — Receivable related to the sale of an investment 4,015 — — Supplemental Data: Cash interest paid 1,481,468 1,765,126 1,192,370 Income taxes paid, net 13,667 29,006 1,538

RESTRUCTURING AND OTHER EXPENSE

RESTRUCTURING AND OTHER EXPENSE	12 Months Ended
	Dec. 31, 2018
Restructuring and Related Activities [Abstract]
RESTRUCTURING AND OTHER EXPENSE	RESTRUCTURING AND OTHER EXPENSE Restructuring Beginning in the first quarter of 2016, the Company commenced restructuring initiatives that were intended to simplify the Company's organizational structure. The following table summarizes the activity for these initiatives: Severance and Other Employee Related Costs Facility Realignment and Other Costs Total Restructuring charges incurred in 2016 $ 215,420 $ 11,157 $ 226,577 Payments and other (113,301 ) (2,760 ) (116,061 ) Accrual balance at December 31, 2016 102,119 8,397 110,516 Restructuring charges 142,679 7,243 149,922 Payments and other (131,324 ) (6,014 ) (137,338 ) Accrual balance at December 31, 2017 $ 113,474 $ 9,626 $ 123,100 Restructuring charges 15,580 15,447 31,027 Payments and other (107,600 ) (11,458 ) (119,058 ) Accrual balance at December 31, 2018 $ 21,454 $ 13,615 $ 35,069 Cumulative costs to date relating to these initiatives amounted to $407,526 . Transaction Costs For the year ended December 31, 2018 , the Company incurred transaction costs of $7,521 relating to the Distribution discussed in Note 1. For the year ended December 31, 2017 , the Company incurred transaction costs of $2,479 related to the acquisition of a business during the first quarter of 2017 and other transactions. For the year ended December 31, 2016 , the Company incurred transaction costs of $13,845 , related primarily to the acquisition of Cablevision.

PROPERTY, PLANT AND EQUIPMENT

PROPERTY, PLANT AND EQUIPMENT	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
PROPERTY, PLANT AND EQUIPMENT	PROPERTY, PLANT AND EQUIPMENT Costs incurred in the construction of the Company's cable systems, including line extensions to, and upgrade of, the Company's hybrid fiber/coaxial infrastructure and construction of the parallel fiber to the home ("FTTH") infrastructure, are capitalized. This includes initial placement of the feeder cable to connect a customer that had not been previously connected, and headend facilities. These costs consist of materials, subcontractor labor, direct consulting fees, and internal labor and related costs associated with the construction activities. The internal costs that are capitalized consist of salaries and benefits of the Company's employees and the portion of facility costs, including rent, taxes, insurance and utilities, that supports the construction activities. These costs are depreciated over the estimated life of the plant ( 10 to 25 years) and headend facilities ( 5 to 25 years). Costs of operating the plant and the technical facilities, including repairs and maintenance, are expensed as incurred. Installation costs associated with the initial deployment of new customer premise equipment (“CPE”) necessary to provide pay television, broadband or telephony services are also capitalized. These costs include materials, subcontractor labor, internal labor, and other related costs associated with the connection activities. The departmental activities supporting the connection process are tracked through specific metrics, and the portion of departmental costs that is capitalized is determined through a time weighted activity allocation of costs incurred based on time studies used to estimate the average time spent on each activity. These installation costs are amortized over the estimated useful lives of the CPE necessary to provide pay television, broadband or telephony services. The portion of departmental costs related to disconnecting services and removing CPE from a customer, costs related to connecting CPE that has been previously connected to the network and repair and maintenance are expensed as incurred. The estimated useful lives assigned to our property, plant and equipment are reviewed on an annual basis or more frequently if circumstances warrant and such lives are revised to the extent necessary due to changing facts and circumstances. Any changes in estimated useful lives are reflected prospectively. Property, plant and equipment (including equipment under capital leases) consist of the following assets, which are depreciated or amortized on a straight-line basis over the estimated useful lives shown below: December 31, 2018 December 31, 2017 Estimated Useful Lives Customer premise equipment $ 1,354,510 $ 1,093,726 3 to 5 years Headends and related equipment 1,852,105 1,626,293 5 to 25 years Infrastructure 4,595,143 4,003,845 5 to 25 years Equipment and software 1,083,166 918,298 3 to 10 years Construction in progress (including materials and supplies) 215,684 240,496 Furniture and fixtures 57,448 52,545 5 to 8 years Transportation equipment 146,387 138,147 5 to 10 years Buildings and building improvements 411,573 394,421 10 to 40 years Leasehold improvements 109,110 108,071 Term of lease Land 48,426 47,563 9,873,552 8,623,405 Less accumulated depreciation and amortization (4,044,671 ) (2,599,579 ) $ 5,828,881 $ 6,023,826 For the years ended December 31, 2018 , 2017 and 2016 the Company capitalized certain costs aggregating $134,265 , $151,646 and $75,804 , respectively, related to the acquisition and development of internal use software, which are included in the table above. Depreciation expense on property, plant and equipment (including capital leases) for the years ended December 31, 2018 , 2017 and 2016 amounted to $1,508,125 , $1,588,764 and $1,046,896 , respectively. The gross amount of buildings and equipment and related accumulated depreciation recorded under capital leases is presented below: December 31, 2018 2017 Buildings and equipment $ 41,554 $ 48,936 Less accumulated depreciation (10,663 ) (12,972 ) $ 30,891 $ 35,964

OPERATING LEASES

OPERATING LEASES	12 Months Ended
	Dec. 31, 2018
Leases [Abstract]
OPERATING LEASES	OPERATING LEASES The Company leases certain office, production, and transmission facilities, as well as office equipment, under terms of leases expiring at various dates through 2044. The leases generally provide for escalating rentals over the term of the lease plus certain real estate taxes and other costs or credits. Costs associated with such operating leases are recognized on a straight-line basis over the initial lease term. The difference between rent expense and rent paid is recorded as deferred rent. Rent expense for the years ended December 31, 2018 , 2017 and 2016 amounted to $104,298 , $95,017 and $65,881 , respectively. The minimum future annual payments for all operating leases (with initial or remaining terms in excess of one year) during the next five years and thereafter, at rates now in force are as follows: 2019 $ 47,905 2020 50,356 2021 43,362 2022 34,882 2023 25,234 Thereafter 167,941

INTANGIBLE ASSETS

INTANGIBLE ASSETS	12 Months Ended
	Dec. 31, 2018
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 December 31, 2018 As of December 31, 2017 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Estimated Useful Lives Customer relationships $ 5,970,884 $ (2,162,110 ) $ 3,808,774 $ 5,970,884 $ (1,409,021 ) $ 4,561,863 8 to 18 years Trade names (a) 1,067,083 (701,998 ) 365,085 1,067,083 (588,574 ) 478,509 2 to 5 years Other amortizable intangibles 37,644 (18,679 ) 18,965 37,060 (10,978 ) 26,082 1 to 15 years $ 7,075,611 $ (2,882,787 ) $ 4,192,824 $ 7,075,027 $ (2,008,573 ) $ 5,066,454 (a) On May 23, 2017, Altice Europe announced the adoption of a global brand to replace the Company's brands in the future, reducing the remaining useful lives of these trade name intangibles to three years from the date of the adoption, which reflected one year as an in-use asset and two years as a defensive asset. In December 2017, the Company made a decision to postpone the adoption of a global brand that would have replaced the Optimum brand, increasing the useful life of the Optimum trade name intangible asset to 5 years . Amortization expense for the years ended December 31, 2018 , 2017 and 2016 aggregated $874,214 , $1,341,807 and $653,410 , respectively. The following table sets forth the estimated amortization expense on intangible assets for the periods presented: Estimated amortization expense Year Ending December 31, 2019 $ 778,922 Year Ending December 31, 2020 697,316 Year Ending December 31, 2021 617,794 Year Ending December 31, 2022 532,998 Year Ending December 31, 2023 371,198 The carrying amount of goodwill is presented below: Goodwill as of January 1, 2016 $ 2,040,402 Goodwill recorded in connection with Cablevision Acquisition 5,838,959 Adjustments to purchase accounting relating to Cequel Acquisition 113,339 Goodwill as of December 31, 2016 7,992,700 Goodwill recorded in connection with acquisitions in the first and fourth quarter of 2017 23,948 Adjustments to purchase accounting relating to Cablevision Acquisition 3,213 Goodwill as of December 31, 2017 8,019,861 Reclassification of goodwill to property, plant and equipment related to Cequel (15,041 ) Goodwill recorded in connection with an acquisition during the third quarter of 2018 7,608 Adjustment to purchase accounting relating to business acquired in fourth quarter of 2017 (12 ) Goodwill as of December 31, 2018 $ 8,012,416

DEBT

DEBT	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
DEBT	DEBT Credit Silo Combination In October 2018, the Company combined its Suddenlink and Optimum businesses under a single credit silo (the “Combination”). The integration of the Suddenlink and Optimum businesses was aimed at aligning Altice USA’s debt capital structure and to simplify Altice USA’s financing strategy and financial reporting requirements. The Combination was effected mainly by the following transactions: • In October 2018, Altice US Finance, Cequel Capital Corporation and Cequel Communications Holdings I, LLC (“CCHI”) commenced an offer to exchange (the "Exchange Offer") any and all outstanding senior notes and senior secured notes issued by them (the "Original Cequel Notes") for up to $5,520,000 aggregate principal amount of new notes (the "New Cequel Notes") and, in the case of the 5.375% secured notes due 2023 and 5.500% secured notes due 2026, and cash of $6,500 . The Exchange Offer was accompanied by a consent solicitation to amend the terms of each series of the notes subject to the Exchange Offer (except the 5.125% Senior Notes due 2021) and the indentures governing such notes. Approximately $5,500,050 of the outstanding notes subject to the Exchange Offer were exchanged into corresponding series of New Cequel Notes. The proposed amendments in the consent solicitation, which have become operative effective November 27, 2018 (the “Combination Date”), eliminated or waived substantially all of the restrictive covenants, eliminated certain events of default, and modified or eliminated certain other provisions governing the Original Cequel Notes (except the 5.125% Senior Notes due 2021) to the extent that they remain outstanding. • In October 2018, CSC Holdings entered into a Sixth Amendment to the CSC Credit Facilities Agreement (the “Combination Incremental Term Loan Agreement”). The Combination Incremental Term Loan Agreement provided for, among other things, new incremental term loan commitments in an aggregate principal amount of $1,275,000 . On or following the Combination Date the following transactions were completed: • The Company redeemed $5,206 principal amount of the Original Cequel Notes that were outstanding after the consummation of the Exchange Offer. • New Cequel Notes with an aggregate principal balance of $5,500,050 were converted into $5,499,156 principal amount of CSC Holdings senior note (see detail below). • Pursuant to the Combination Incremental Term Loan Agreement, on the Combination Date, CSC Holdings entered into a $1,275,000 7 -year incremental term loan maturing January 2026 (the “Incremental Term Loan B-3”). The proceeds from the Incremental Term Loan B-3 were used to repay the entire principal amount of loans under Cequel’s existing Term Loan Facility and other transaction costs related to the Combination. The Incremental Term Loan B-3 has a margin of 2.25% over LIBOR and was issued with an original issue discount of 25 basis points. The Company is required to make scheduled quarterly payments equal to 0.25% (or $3,188 ) of the principal amount of the Incremental Term Loan B-3, beginning with the fiscal quarter ended June 30, 2019, with the remaining balance scheduled to be paid on January 15, 2026. • The Combination was implemented by a series of corporate transactions, including: (i) CCHI merging into Cablevision, with Cablevision as the surviving entity (the “Holdco Merger”), and (ii) Cequel Communications Holdings II, LLC (the direct parent of Cequel) merging into CSC Holdings, with CSC Holdings as the surviving entity. In connection with the Holdco Merger, Cablevision assumed all of the obligations of CCHI that remained outstanding after giving effect to the Combination Exchange under the indentures governing the outstanding Original Cequel Notes. The following is a summary of the results of the Exchange Offer: Original Cequel Notes Remaining Original Cequel Notes Notes Redeemed in Cash Principal of New CSC Holdings Notes 5.375% Senior Secured Notes due 2023 $ 1,100,000 $ — $ 4,157 $ 1,095,825 5.5% Senior Secured Notes due 2026 1,500,000 — 1,049 1,498,806 5.125% Senior Notes due 2021 1,250,000 8,886 — 1,240,762 7.75% Senior Notes due 2025 620,000 1,740 — 617,881 7.5% Senior Notes due 2028 1,050,000 4,118 — 1,045,882 $ 5,520,000 $ 14,744 $ 5,206 $ 5,499,156 CSC Holdings Credit Facilities In connection with the Cablevision Acquisition, in October 2015, Finco, 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 provides U.S. dollar term loans currently in an aggregate principal amount of $3,000,000 ( $2,955,000 outstanding at December 31, 2018 ) (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 $2,300,000 (the “CSC Revolving Credit Facility” and, together with the 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 and October 15, 2018, respectively, and as further amended, restated, supplemented or otherwise modified from time to time, the “CSC Credit Facilities Agreement”). CSC Holdings and those of its subsidiaries which conduct our broadband, pay television and telephony services operations, as well as Lightpath, which provides Ethernet-based data, Internet, voice and video transport and managed services to the business market, comprise the "Restricted Group" as they are subject to the covenants and restrictions of the credit facility and indentures governing the notes and debentures issued by CSC Holdings. In addition, the Restricted Group is also subject to the covenants of the debt issued by Cablevision. Borrowings under the CSC Revolving Credit Facility are comprised of eurodollar borrowings or alternate base rate borrowings, and bear interest at a rate per annum equal to the adjusted LIBO 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. The amendment to the CSC Credit Facilities Agreement entered into on September 9, 2016, extended the maturity date of the CSC Term Loan Facility to October 11, 2024. In October 2016, CSC Holdings used the net proceeds from the sale of $1,310,000 aggregate principal amount of 5.5% senior guaranteed notes due 2027 (the ‘‘2027 Guaranteed Notes’’) (after the deduction of fees and expenses) to prepay outstanding loans under the CSC Holdings Term Credit Facility that were not extended pursuant to this amendment. In connection with the prepayment of the Term Credit Facility, the Company wrote-off the deferred financing costs and the unamortized discount related to the existing term loan aggregating $102,894 . Additionally, the Company recorded deferred financing costs and an original issue discount of $7,249 and $6,250 , respectively, which were subsequently written-off in connection with the Extension Amendment discussed below. The amendment to the CSC Credit Facilities Agreement entered into on March 15, 2017 (“Extension Amendment”) increased the Term Loan by $500,000 to $3,000,000 and the maturity date for this facility was extended to July 17, 2025. The closing of the Extension Amendment occurred in April 2017 and the proceeds were used to refinance the entire $2,493,750 principal amount of existing Term Loans and redeem $500,000 of the 8.625% Senior Notes due September 2017 issued by Cablevision. In connection with the Extension Amendment and the redemption of the senior notes, the Company recorded a loss on extinguishment of debt and write-off of deferred financing costs aggregating $18,976 . The Term Loan is comprised of eurodollar borrowings or alternate base rate borrowings, and bears interest at a rate per annum equal to the adjusted LIBO 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, 1.25% per annum and (ii) with respect to any eurodollar loan, 2.25% per annum. The Company is required to make scheduled quarterly payments equal to 0.25% (or $7,500 ) of the principal amount of the Term Loan, beginning with the fiscal quarter ended September 30, 2017, with the remaining balance scheduled to be paid on July 17, 2025. The Company recorded deferred financing costs and an original issue discount of $4,390 and $15,000 , respectively, which are both being amortized to interest expense over the term of the Term Loan. In January 2018, CSC Holdings entered into a new $1,500,000 incremental term loan facility (the "Incremental Term Loan B-2") under its existing credit facilities agreement. The Incremental Term Loan B-2 was priced at 99.5% and will mature on January 25, 2026. The Incremental Term Loan B-2 is comprised of eurodollar borrowings or alternate base rate borrowings, and bears interest at a rate per annum equal to the adjusted LIBO 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, 1.50% per annum and (ii) with respect to any eurodollar loan, 2.50% per annum. The Company is required to make scheduled quarterly payments equal to 0.25% (or $3,750 ) of the principal amount of the Incremental Term Loan B-2, beginning with the fiscal quarter ended September 30, 2018, with the remaining balance scheduled to be paid on January 26, 2026. See discussion above under "Credit Silo Combination" regarding the Sixth Amendment to the CSC Credit Facilities Agreement, which provided for, among other things, new incremental term loan commitments in an aggregate principal amount of $1,275,000 . The CSC Credit Facilities Agreement requires the prepayment of outstanding CSC Term Loans, subject to certain exceptions and deductions, with (i) 100% of the net cash proceeds of certain asset sales, subject to reinvestment rights and certain other exceptions; and (ii) commencing with the fiscal year ending December 31, 2017, a pari ratable share (based on the outstanding principal amount of the Term Loans divided by the sum of the outstanding principal amount of all pari passu indebtedness and the Term Loans) of 50% of annual excess cash flow, which will be reduced to 0% if the consolidated net senior secured leverage ratio of CSC Holdings is less than or equal to 4.5 to 1. The obligations under the CSC Credit Facilities are guaranteed by each restricted subsidiary of CSC Holdings (other than CSC TKR, LLC and its subsidiaries and certain excluded subsidiaries) (the “Initial Guarantors”) and, subject to certain limitations, will be guaranteed by each future material wholly-owned restricted subsidiary of CSC Holdings. The obligations under the CSC Credit Facilities (including any guarantees thereof) are secured on a first priority basis, subject to any liens permitted by the Credit Facilities, by capital stock held by CSC Holdings or any guarantor in certain subsidiaries of CSC Holdings, subject to certain exclusions and limitations. The CSC Credit Facilities Agreement includes certain negative covenants which, among other things and subject to certain significant exceptions and qualifications, limit CSC Holdings' ability and the ability of its restricted subsidiaries to: (i) incur or guarantee additional indebtedness, (ii) make investments, (iii) create liens, (iv) sell assets and subsidiary stock, (v) pay dividends or make other distributions or repurchase or redeem our capital stock or subordinated debt, (vi) engage in certain transactions with affiliates, (vii) enter into agreements that restrict the payment of dividends by subsidiaries or the repayment of intercompany loans and advances; and (viii) engage in mergers or consolidations. In addition, the CSC Revolving Credit Facility includes a financial maintenance covenant solely for the benefit of the lenders under the CSC Revolving Credit Facility consisting of a maximum consolidated net senior secured leverage ratio of CSC Holdings and its restricted subsidiaries of 5.0 to 1.0. The financial covenant will be tested on the last day of any fiscal quarter, but only if on such day there are outstanding borrowings under the CSC Revolving Credit Facility (including swingline loans but excluding any cash collateralized letters of credit and undrawn letters of credit not to exceed $15,000 ). The CSC Credit Facilities Agreement also 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 CSC Credit Facilities will be entitled to take various actions, including the acceleration of amounts due under the CSC Credit Facilities and all actions permitted to be taken by a secured creditor. CSC Holdings was in compliance with all of its financial covenants under the CSC Credit Facilities as of December 31, 2018 . Cequel Credit Facilities In October 2018, in connection with the Combination described above, amounts outstanding pursuant to the Cequel Credit Facilities, defined below, aggregating $1,249,188 were repaid from the proceeds of the CSC Holdings Senior Secured Term Loan B and all commitments pursuant to the Cequel Credit Facilities were cancelled. Prior to the Combination, an indirect wholly-owned subsidiary of Cequel had entered into a senior secured credit facility which provided term loans in an aggregate principal amount of $1,265,000 (the “Cequel Term Loan Facility”) and revolving loan commitments in an aggregate principal amount of $350,000 (the “Cequel Revolving Credit Facility” and, together with the Cequel Term Loan Facility, the “Cequel Credit Facilities”). The Company was required to make scheduled quarterly payments equal to 0.25% (or $3,163 ) of the principal amount of the outstanding Cequel term loan, beginning with the fiscal quarter ended September 30, 2017, with the remaining balance scheduled to be paid on July 28, 2025. In April 2017, Cequel used proceeds from the term loan facility to refinance the entire $812,963 principal amount of loans under the then outstanding term loan and redeem $450,000 of the 6.375% Senior Notes due September 15, 2020. In connection with the redemption of the senior notes, the Company recorded a loss on extinguishment of debt and write-off of deferred financing costs aggregating $28,684 . Loans comprising each eurodollar borrowing or alternate base rate borrowing, as applicable, bore interest at a rate per annum equal to the adjusted LIBO rate or the alternate base rate, as applicable, plus the applicable margin, where the applicable margin was: • in respect of the Cequel term loans, (i) with respect to any alternate base rate loan, 1.25% per annum and (ii) with respect to any eurodollar loan, 2.25% per annum, and • in respect of Cequel Revolving Credit Facility loans (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. The following table provides details of the Company's outstanding credit facility debt: Interest Rate at December 31, 2018 December 31, 2018 December 31, 2017 Maturity Date Principal Amount Carrying Amount (a) Principal Amount Carrying Amount (a) CSC Holdings Restricted Group: Revolving Credit Facility (b) $20,000 on October 9, 2020, remaining balance on November 30, 2021 (d) 5.71% $ 250,000 $ 231,425 $ 450,000 $ 425,488 Term Loan B July 17, 2025 4.71% 2,955,000 2,939,425 2,985,000 2,967,818 Incremental Term Loan B-2 January 25, 2026 4.96% 1,492,500 1,475,778 — — Incremental Term Loan B-3 (c) January 15, 2026 4.75% 1,275,000 1,268,931 — — Cequel: Term Loan Facility (c) — — 1,258,675 1,250,217 $ 5,972,500 5,915,559 $ 4,693,675 4,643,523 Less: Current portion 54,563 42,650 Long-term debt $ 5,860,996 $ 4,600,873 (a) The carrying amount is net of the unamortized deferred financing costs and/or discounts/premiums. (b) At December 31, 2018 , $147,564 of the revolving credit facility was restricted for certain letters of credit issued on behalf of the Company and $1,902,436 of the facility was undrawn and available, subject to covenant limitations. (c) Proceeds from the CSC Holdings term loan were used to repay outstanding amount under the Cequel Term loan in October 2018 in connection with the Combination. See discussion above. (d) See Note 21 for a discussion of the Company's refinancing of the Revolving Credit Facility. Senior Guaranteed Notes, Senior Secured Notes, and Senior Notes and Debentures The following table summarizes the Company's senior guaranteed notes, senior secured notes and senior notes and debentures: Interest Rate December 31, 2018 December 31, 2017 Date Issued Maturity Date Principal Amount Carrying Amount (a) Principal Amount Carrying Amount (a) CSC Holdings Senior Notes: February 6, 1998 February 15, 2018 7.875 % $ — $ — $ 300,000 $ 301,184 July 21, 1998 July 15, 2018 7.625 % (e) — — 500,000 507,744 February 12, 2009 February 15, 2019 8.625 % (h) 526,000 527,749 526,000 541,165 November 15, 2011 November 15, 2021 6.750 % 1,000,000 969,285 1,000,000 960,146 May 23, 2014 June 1, 2024 5.250 % 750,000 671,829 750,000 660,601 October 9, 2015 January 15, 2023 10.125 % (h) 1,800,000 1,781,424 1,800,000 1,777,914 October 9, 2015 October 15, 2025 10.875 % 1,684,221 1,663,027 1,684,221 1,661,135 November 27, 2018 December 15, 2021 5.125 % (g) 1,240,762 1,155,264 — — November 27, 2018 July 15, 2025 7.750 % (g) 617,881 603,889 — — November 27, 2018 April 1, 2028 7.500 % (g) 1,045,882 1,044,143 — — CSC Holdings Senior Guaranteed Notes: October 9, 2015 October 15, 2025 6.625 % 1,000,000 988,052 1,000,000 986,717 September 23, 2016 April 15, 2027 5.500 % 1,310,000 1,304,936 1,310,000 1,304,468 January 29, 2018 February 1, 2028 5.375 % 1,000,000 992,064 — — November 27, 2018 July 15, 2023 5.375 % (g) 1,095,825 1,078,428 — — November 27, 2018 May 15, 2026 5.500 % (g) 1,498,806 1,484,278 — — Cablevision Senior Notes (b): April 15, 2010 April 15, 2018 7.750 % (d) — — 750,000 754,035 April 15, 2010 April 15, 2020 8.000 % 500,000 495,302 500,000 492,009 September 27, 2012 September 15, 2022 5.875 % 649,024 585,817 649,024 572,071 May 16, 2013 Sept. 9, 2014 December 15, 2021 5.125 % (f) 8,886 8,274 — — June 12, 2015 July 15, 2025 7.750 % (f) 1,740 1,690 — — April 5, 2018 April 1, 2028 7.500 % (f) 4,118 4,110 — — Cequel and Cequel Capital Senior Notes: October 25, 2012 September 15, 2020 6.375 % (c) — — 1,050,000 1,027,493 May 16, 2013 Sept. 9, 2014 December 15, 2021 5.125 % (g) — — 1,250,000 1,138,870 June 12, 2015 July 15, 2025 7.750 % (g) — — 620,000 604,374 Altice US Finance I Corporation Senior Secured Notes: June 12, 2015 July 15, 2023 5.375 % (g) — — 1,100,000 1,082,482 April 26, 2016 May 15, 2026 5.500 % (g) — — 1,500,000 1,488,024 $ 15,733,145 15,359,561 16,289,245 15,860,432 Less: current portion — 507,744 Long-term debt $ 15,359,561 $ 15,352,688 (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 Cequel and Cablevision acquisitions. (b) The issuers of these notes have no ability to service interest or principal on the notes, other than through any dividends or distributions received from CSC Holdings. CSC Holdings is restricted, in certain circumstances, from paying dividends or distributions to the issuers by the terms of the CSC Holdings credit facilities agreement. (c) These notes were repaid in April 2018 with the proceeds from the issuance of new senior notes. (d) These notes were repaid in February 2018 with the proceeds from the 2028 Guaranteed Notes (defined below) and with the proceeds from the Incremental Term Loan. (e) These notes were repaid in July 2018 with borrowings under CSC Holdings revolving credit facility agreement. (f) In connection with the Combination discussed above, Cablevision assumed all of the obligations of the Cequel Senior Notes that were not exchanged. (g) Issued or exchanged for new notes in connection with the Combination discussed above or new notes in connection with the Combination discussed above. (h) These notes were repaid subsequent to December 31, 2018 (see Note 21 for further details). In connection with this refinancing, $526,000 of short-term senior notes were reclassified to long-term debt along with the associated unamortized fair value adjustment. The Company may redeem some or more of all the notes at the redemption price set forth in the relevant indenture, plus accrued and unpaid interest. The indentures under which the senior notes and debentures were issued contain various covenants. The Company was in compliance with all of its financial covenants under these indentures as of December 31, 2018 . O n April 26, 2016, Altice US Finance I Corporation issued $1,500,000 aggregate principal amount of senior secured notes (the ‘‘Cequel 2026 Senior Secured Notes’’). The proceeds from the sale were used to repay the $1,477,200 remaining balance under the previous credit facility and to pay related fees and expenses. The Cequel 2026 Senior Secured Notes mature on May 15, 2026 and bear interest at a rate of 5.50% annually. Interest on the Cequel 2026 Senior Secured Notes is payable semi-annually on May 15 and November 15 of each year, commencing on November 15, 2016. Deferred financing costs recorded in connection with the issuance of these notes amounted to $13,773 and are being amortized over the term of the notes. See discussion above regarding the exchange of these notes as a result of the Combination. In September 2016, CSC Holdings issued $1,310,000 aggregate principal amount of 5.50% senior guaranteed notes due April 15, 2027. The 2027 Guaranteed Notes are senior unsecured obligations and rank pari passu in right of payment with all of the existing and future senior indebtedness, including the existing senior notes and the Credit Facilities and rank senior in right of payment to all of existing and future subordinated indebtedness. As discussed above, in October 2016, CSC Holdings used the proceeds from the issuance of the 2027 Guaranteed Notes (after the deduction of fees and expenses) to prepay the outstanding loans under the CSC Term Credit Facility that were not extended pursuant to the extension amendment on September 9,2016. In connection with the issuance of the 2027 Guaranteed Notes, the Company incurred deferred financing costs of approximately $6,106 , which are being amortized to interest expense over the term of the 2027 Guaranteed Notes. In January 2018, CSC Holdings issued $1,000,000 aggregate principal amount of 5.375% senior guaranteed notes due February 1, 2028 (the "2028 Guaranteed Notes"). The 2028 Guaranteed Notes are senior unsecured obligations and rank pari passu in right of payment with all of the existing and future senior indebtedness, including the existing senior notes and the CSC Credit Facilities and rank senior in right of payment to all of existing and future subordinated indebtedness. The proceeds from the 2028 Guaranteed Notes, together with proceeds from the Incremental Term Loan (discussed above), borrowings under the CSC revolving credit facility and cash on hand, were used in February 2018 to repay $300,000 principal amount of CSC Holdings' senior notes due in February 2018 and $750,000 principal amount of Cablevision senior notes due in April 2018 and a portion was used to fund the dividend of $1,499,935 to the Company's stockholders immediately prior to and in connection with the Distribution discussed in Note 1. In connection with the redemption of Cablevision senior notes, the Company paid a call premium of approximately $7,019 , which was recorded as a loss on extinguishment of debt and also recorded a write-off of the unamortized premium of $2,314 . In April 2018, CCHI and Cequel Capital Corporation each an indirect, wholly owned subsidiary of the Company, issued $1,050,000 aggregate principal amount of 7.50% senior notes due April 1, 2028 (the "2028 Senior Notes"). The proceeds of these notes were used in April 2018 to redeem the $1,050,000 aggregate principal amount 6 3/8% senior notes due September 15, 2020. In connection with the redemption of these notes, the Company paid a call premium of approximately $16,737 , which was recorded as a loss on extinguishment of debt and also recorded a write-off of deferred financing costs aggregating $20,173 . See discussion above regarding the exchange of these notes as a result of the Combination. The indentures under which the Senior Guaranteed Notes and Senior Notes and Debentures were issued contain certain covenants and agreements with respect to investment grade debt securities, including limitations on the ability of CSC Holdings and its restricted subsidiaries to (i) incur or guarantee additional indebtedness, (ii) make investments or other restricted payments, (iii) create liens, (iv) sell assets and subsidiary stock, (v) pay dividends or make other distributions or repurchase or redeem our capital stock or subordinated debt, (vi) engage in certain transactions with affiliates, (vii) enter into agreements that restrict the payment of dividends by subsidiaries or the repayment of intercompany loans and advances, and (viii) engage in mergers or consolidations, in each case subject to certain exceptions. The indentures also contain certain customary events of default. If an event of default occurs, the obligations under the notes may be accelerated. See Note 21 for senior guaranteed notes issued subsequent to December 31, 2018. Notes Payable to Affiliates and Related Parties On June 21, 2016, in connection with the Cablevision Acquisition, the Company issued notes payable to affiliates and related parties aggregating $1,750,000 , of which $875,000 bore interest at 10.75% and matured on December 20, 2023 and $875,000 bore interest at 11% and matured on December 20, 2024. In connection with the Company's IPO in June 2017, the Company converted the notes payable to affiliates and related parties (together with accrued and unpaid interest of $529 and applicable premium of $513,723 ) into shares of the Company’s common stock at the IPO price. The premium was recorded as a loss on extinguishment of debt on the Company's consolidated statement of operations for the year ended December 31, 2017. In connection with the conversion of the notes, the Company recorded a credit to paid in capital of $2,264,252 for the year ended December 31, 2017. For the year ended December 31, 2017 and 2016 the Company recognized interest expense of $90,405 and $102,557 related to these notes prior to their conversion. The following table provides a summary of the loss (gain) on extinguishment of debt and the write-off of deferred financing costs recorded by the Company upon the redemption of senior notes and the refinancing of credit facilities: For the Year Ended December 31, 2018: Cablevision 7.75% Senior Notes due 2018 $ 4,706 Cequel 6.375% Senior Notes due 2020 36,910 Cequel Credit Facility 7,733 Cequel senior and senior secured notes pursuant to the Exchange Offer discussed above (545 ) $ 48,804 For the Year Ended December 31, 2017: Notes payable to affiliates $ 513,723 CSC Holdings Term Loan B 12,675 CSC Holdings 10.875% Senior Notes due 2025 38,858 CSC Holdings 8.625% Senior Notes due 2017 6,300 Cequel Term Loan Facility 2,027 Cequel 6.375% Senior Notes due 2020 26,657 $ 600,240 For the Year Ended December 31, 2016: CSC Holdings Term Loan B $ 102,894 Cequel Term Loan Facility 24,755 $ 127,649 Summary of Debt Maturities The future maturities of debt payable by the Company under its various debt obligations outstanding as of December 31, 2018 , including notes payable, collateralized indebtedness (see Note 12), and capital leases, are as follows: Years Ending December 31, 2019 $ 684,624 2020 589,566 2021 4,002,251 2022 710,920 2023 2,957,403 Thereafter 14,351,818 The amounts in the table above do not include the effects of the debt transactions discussed in Note 21.

DERIVATIVE CONTRACTS AND COLLAT

DERIVATIVE CONTRACTS AND COLLATERALIZED INDEBTEDNESS	12 Months Ended
	Dec. 31, 2018
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 were 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 December 31, 2018 , 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 December 31, 2018 . Put/Call Options In the third quarter of 2017, the Company entered into a put-call contract that expired in the third quarter of 2018 whereby the Company sold a put option and purchased a call option with the same strike price. These put-call options were settled as of December 31, 2017 and the Company recorded a loss on investments of $97,410 for the year ended December 31, 2017, which represents the difference between the strike price and the closing price of the underlying shares. 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. The following is a summary of interest rate swap contracts outstanding at December 31, 2018: Trade Date Maturity Date Notional Amount Company Pays Company Receives May 2016 May 2026 $ 750,000 Six- month LIBOR Fixed rate of 1.665% June 2016 May 2026 750,000 Six- month LIBOR Fixed rate of 1.68% May 2018 April 2019 2,970,000 Three- month LIBOR One- month LIBOR plus 0.226% May 2018 April 2019 1,496,250 Three- month LIBOR One- month LIBOR plus 0.226% April 2018 April 2019 1,255,513 Three- month LIBOR minus 0.225% One- month LIBOR December 2018 January 2022 500,000 Fixed rate of 2.7177% Three-month LIBOR December 2018 January 2022 500,000 Fixed rate of 2.733% Three-month LIBOR December 2018 January 2022 500,000 Fixed rate of 2.722% 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 As of December 31, 2018, 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 December 31, 2018 2017 Asset Derivatives: Prepaid forward contracts Derivative contracts, current $ — $ 52,545 Interest rate swap contracts Derivative contracts, current 1,975 — Prepaid forward contracts Derivative contracts, long-term 109,344 — Interest rate swap contracts Derivative contracts, long-term — — 111,319 52,545 Liability Derivatives: Prepaid forward contracts Liabilities under derivative contracts, short-term — (52,545 ) Interest rate swap contracts Liabilities under derivative contracts, short-term (70 ) — Prepaid forward contracts Liabilities under derivative contracts, long-term — (109,504 ) Interest rate swap contracts Liabilities under derivative contracts, long-term (132,908 ) (77,902 ) $ (132,978 ) $ (239,951 ) The gain (loss) from the Company's derivative contracts related to the Comcast common stock for the years ended December 31, 2018 , 2017 and 2016 of $218,848 , $(138,920) and $(53,696) , respectively, are reflected in gain (loss) on derivative contracts, net in the Company's consolidated statements of operations. For the years ended December 31, 2018 , 2017 and 2016 the Company recorded a gain (loss) on investments of $(261,834) , $237,354 and $141,896 , respectively, primarily representing the net increase (decrease) in the fair values of the investment securities pledged as collateral. For the years ended December 31, 2018 , 2017 and 2016 the Company recorded a gain (loss) on interest rate swap contracts of $(61,697) , $5,482 and $(72,961) respectively. Settlements of Collateralized Indebtedness The following table summarizes the settlement of the Company's collateralized indebtedness relating to Comcast shares that were settled by delivering cash equal to the collateralized loan value, net of the value of the related equity derivative contracts during the years presented: Years Ended December 31, 2018 2017 Number of shares 16,139,868 26,815,368 Collateralized indebtedness settled $ (516,537 ) $ (774,703 ) Derivatives contracts settled 24 (56,356 ) (516,513 ) (831,059 ) Proceeds from new monetization contracts 516,513 838,794 Net cash proceeds $ — $ 7,735 The cash to settle the collateralized indebtedness was obtained from the proceeds of new monetization contracts covering an equivalent number of Comcast shares. The terms of the new contracts allow the Company to retain upside participation in Comcast shares up to each respective contract's upside appreciation limit with downside exposure limited to the respective hedge price. In April 2017, the Company entered into new monetization contracts related to 32,153,118 shares of Comcast common stock held by us, which synthetically reversed the then existing contracts related to these shares (the "Synthetic Monetization Closeout"). As the then existing collateralized debt matured, the Company settled the contracts with proceeds received from the new monetization contracts. The new monetization contracts mature on April 28, 2021. The new monetization contracts provide the Company with downside protection below the hedge price of $35.47 and upside benefit of stock price appreciation up to $44.72 per share. In connection with the execution of these contracts, the Company recorded (i) the fair value of the equity derivative contracts of $53,316 (in a net asset position), (ii) notes payable of $111,657 , representing the fair value of the existing equity derivative contracts, in a liability position, and (iii) a discount on notes payable of $58,341 .

FAIR VALUE MEASUREMENT

FAIR VALUE MEASUREMENT	12 Months Ended
	Dec. 31, 2018
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 for each of these hierarchy levels, the Company's financial assets and financial liabilities that are measured at fair value on a recurring basis: Fair Value Hierarchy December 31, 2018 December 31, 2017 Assets: Money market funds Level I $ 91,852 $ 5,949 Investment securities pledged as collateral Level I 1,462,626 1,720,357 Prepaid forward contracts Level II 109,344 52,545 Interest rate swap contracts Level II 1,975 — Liabilities: Prepaid forward contracts Level II — 162,049 Interest rate swap contracts Level II 132,978 77,902 Contingent consideration related to 2017 and 2018 acquisitions Level III 6,195 32,233 The Company's cash equivalents, investment securities 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. The fair value of the contingent consideration as of December 31, 2018 relating to acquisitions in the third quarter of 2018 and fourth quarter of 2017 amounted to approximately $4,500 and $1,695 , respectively. The estimated amount recorded as of December 31, 2018 is 100% of the contractual amount related to the acquisition in the third quarter 2018 and 42% of the contractual amount related to the acquisition in the fourth quarter 2017. The fair value of the consideration was estimated based on a probability assessment of attaining the targets as of December 31, 2018. 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 and Debentures, Senior Secured Notes, Senior Guaranteed Notes, and Notes Payable 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 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 as follows: December 31, 2018 December 31, 2017 Fair Value Hierarchy Carrying Amount (a) Estimated Fair Value Carrying Amount (a) Estimated Fair Value CSC Holdings debt instruments: Credit facility debt Level II $ 5,915,559 $ 5,972,500 $ 3,393,306 $ 3,435,000 Collateralized indebtedness Level II 1,406,182 1,374,203 1,349,474 1,305,932 Senior guaranteed notes Level II 5,847,758 5,646,468 2,291,185 2,420,000 Senior notes and debentures Level II 8,416,610 8,972,722 6,409,889 7,221,846 Notes payable Level II 64,212 63,940 56,956 55,289 Cablevision debt instruments: Senior notes and debentures Level II 1,095,193 1,163,843 1,818,115 1,931,239 Cequel debt instruments: — — Cequel credit facility Level II — — 1,250,217 1,258,675 Senior secured notes Level II — — 2,570,506 2,658,930 Senior notes Level II — — 2,770,737 2,983,615 Notes payable Level II 41,896 41,896 8,946 8,946 $ 22,787,410 $ 23,235,572 $ 21,919,331 $ 23,279,472 (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.

INCOME TAXES

INCOME TAXES	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES The Company files a federal consolidated and certain state combined income tax returns with its 80% or more owned subsidiaries. Income tax benefit attributable to the Company's operations for the years ended December 31, 2018 , 2017 and 2016 consist of the following components: Years Ended December 31, 2018 2017 2016 Current expense (benefit): Federal $ (1,865 ) $ 5,261 $ (981 ) State 32,347 12,530 5,310 30,482 17,791 4,329 Deferred benefit: Federal 26,141 (2,095,930 ) (223,159 ) State (93,744 ) (784,224 ) (40,830 ) (67,603 ) (2,880,154 ) (263,989 ) Tax expense (benefit) relating to uncertain tax positions (1,534 ) 11 (6 ) Income tax benefit $ (38,655 ) $ (2,862,352 ) $ (259,666 ) The income tax benefit attributable to the Company's operations differs from the amount derived by applying the statutory federal rate to pretax loss principally due to the effect of the following items: Years Ended December 31, 2018 2017 2016 Federal tax benefit at statutory rate $ (3,793 ) $ (478,656 ) $ (381,901 ) State income taxes, net of federal impact (8,103 ) (61,698 ) (39,336 ) Changes in the valuation allowance 15,987 (111 ) 297 Impact of Federal Tax Reform — (2,332,677 ) — Changes in the state rates used to measure deferred taxes, net of federal impact (52,915 ) (12,896 ) 153,239 Tax benefit relating to uncertain tax positions (514 ) (253 ) (120 ) Non-deductible share-based compensation related to the carried unit plan 8,677 20,101 5,029 Non-deductible Cablevision Acquisition transaction costs — — 4,457 Other non-deductible expenses 2,200 3,405 1,551 Other, net (194 ) 433 (2,882 ) Income tax benefit $ (38,655 ) $ (2,862,352 ) $ (259,666 ) In late 2017, the United States enacted the Tax Cuts and Jobs Act of 2017 (the “Tax Reform”) which significantly changed the existing U.S. tax law by implementing a reduction in the corporate tax rate to 21%, moving from a worldwide tax system to a territorial system and imposing new or additional limitations on the deductibility of interest expense and executive compensation. Given the significance of the legislation, the SEC issued Staff Accounting Bulletin No. 118 ("SAB 118"), which allowed registrants to record provisional amounts during a one year “measurement period” similar to that used when accounting for business combinations. The Company applied the guidance in SAB 118 when accounting for the enactment-date effects of the Tax Reform in 2017 and throughout 2018. For the year ended December 31, 2017, the Company recognized a non-cash deferred tax benefit of $2,332,677 resulting primarily from a decrease in the deferred tax liabilities with regard to fixed assets and intangibles, partially offset by a decrease in the deferred tax asset for the federal net operating loss carry forward (‘‘NOL’’). At December 31, 2018, the Company completed its accounting of SAB 118 for all of the enactment-date income tax effects of the Tax Reform. The Company has not made any measurement-period adjustments and there were no additional material adjustments related to the Tax Reform. During 2018, the Company determined that it met the definition of a Qualified Technology Company for New York State tax purposes and thereby was eligible for the reduced tax rate. Additionally, during 2018, the state of New Jersey enacted significant tax law changes imposing a 2.5% surtax for tax years beginning January 1, 2018 and mandating combined return filing requirements for unitary corporations for tax years beginning January 1, 2019. Accordingly, the Company recorded a net non-cash deferred tax benefit of $52,915 based on a remeasurement of the net deferred tax liability. The tax effects of temporary differences which give rise to significant portions of deferred tax assets or liabilities and the corresponding valuation allowance are as follows: December 31, 2018 2017 Noncurrent NOLs and tax credit carry forwards $ 571,413 $ 785,809 Compensation and benefit plans 42,484 49,698 Partnership investments 60,413 68,054 Restructuring liability 9,364 33,247 Other liabilities 38,473 40,149 Liabilities under derivative contracts 20,846 21,034 Interest deferred for tax purposes 166,668 128,516 Other 11,531 8,849 Deferred tax asset 921,192 1,135,356 Valuation allowance (25,400 ) (3,000 ) Net deferred tax asset, noncurrent 895,792 1,132,356 Fixed assets and intangibles (5,496,103 ) (5,729,274 ) Investments (71,167 ) (113,628 ) Prepaid expenses (7,543 ) (8,105 ) Fair value adjustments related to debt and deferred financing costs (40,083 ) (40,215 ) Other (4,833 ) (10,420 ) Deferred tax liability, noncurrent (5,619,729 ) (5,901,642 ) Total net deferred tax liability $ (4,723,937 ) $ (4,769,286 ) As of December 31, 2018 , the Company's federal NOLs were approximately $1,915,759 . The utilization of certain pre-merger NOLs of Cablevision and Cequel are limited pursuant to Internal Revenue Code Section 382. The Company does not expect such limitations to impact the ability to utilize the NOLs prior to their expiration. As of December 31, 2018 , the Company has $24,126 of alternative minimum tax credits which do not expire and $17,806 of research credits, expiring in varying amounts from 2023 through 2035. Pursuant to the Tax Reform elimination of the AMT liability, the Company has submitted a refund request for 50% of the prior year’s AMT, which reflects the portion not covered by the effects of the budget sequestration. Deferred tax assets have resulted primarily from the Company's future deductible temporary differences and NOLs. In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax asset will not be realized. In evaluating the need for a valuation allowance, management takes into account various factors, including the expected level of future taxable income, available tax planning strategies and reversals of existing taxable temporary differences. If such estimates and related assumptions change in the future, the Company may be required to record additional valuation allowances against its deferred tax assets, resulting in additional income tax expense in the Company's consolidated statements of operations. Management evaluates the realizability of the deferred tax assets and the need for additional valuation allowances quarterly. Pursuant to the Cablevision Acquisition and Cequel Acquisition, deferred tax liabilities resulting from the book fair value adjustment increased significantly and future taxable income that will result from the reversal of existing taxable temporary differences for which deferred tax liabilities are recognized is sufficient to conclude it is more likely than not that the Company will realize all of its gross deferred tax assets, except those deferred tax assets against which a valuation allowance has been recorded which relate to certain state NOLs. In the normal course of business, the Company engages in transactions in which the income tax consequences may be uncertain. The Company's income tax returns are filed based on interpretation of tax laws and regulations. Such income tax returns are subject to examination by taxing authorities. For financial statement purposes, the Company only recognizes tax positions that it believes are more likely than not of being sustained. There is considerable judgment involved in determining whether positions taken or expected to be taken on the tax return are more likely than not of being sustained. A reconciliation of the beginning and ending amount of unrecognized tax benefits associated with uncertain tax positions, excluding associated deferred tax benefits and accrued interest, is as follows: Balance at December 31, 2016 $ 4,025 Increases related to prior year tax positions 11 Balance at December 31, 2017 4,036 Decreases related to prior year tax positions (1,456 ) Balance at December 31, 2018 $ 2,580 As of December 31, 2018 , if all uncertain tax positions were sustained at the amounts reported or expected to be reported in the Company's tax returns, the elimination of the Company's unrecognized tax benefits, net of the deferred tax impact, would decrease income tax expense by $2,104 . In the second quarter of 2016, the Company changed its accounting policy on a prospective basis to present interest expense relating to uncertain tax positions as additional interest expense. For the year ended December 31, 2018 , a net benefit of $2,123 of interest expense relating to reversal of uncertain tax positions from prior years offset by current interest accrual was recorded to interest expense. The most significant jurisdictions in which the Company is required to file income tax returns include the states of New York, New Jersey, Connecticut, the City of New York, Texas and West Virginia. The State and City of New York are presently auditing income tax returns for years 2012 through 2014. The State of New Jersey is presently auditing income tax returns for years 2014 through 2017. Management does not believe that the resolution of the ongoing income tax examination described above will have a material adverse impact on the financial position of the Company. Changes in the liabilities for uncertain tax positions will be recognized in the interim period in which the positions are effectively settled or there is a change in factual circumstances.

SHARE-BASED COMPENSATION

SHARE-BASED COMPENSATION	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
SHARE-BASED COMPENSATION	SHARE-BASED COMPENSATION Carry Unit Plan Certain employees of the Company and its affiliates received awards of units in a carry unit plan of Neptune Management LP, an entity which has an ownership interest in the Company. The awards generally vest as follows: 50% on the second anniversary of June 21, 2016 for Cablevision employees or December 21, 2015 for Cequel employees ("Base Date"), 25% on the third anniversary of the Base Date, and 25% on the fourth anniversary of the Base Date. Neptune Holding US GP LLC, the general partner of Neptune Management LP, has the right to repurchase (or to assign to an affiliate, including the Company, the right to repurchase) vested awards held by employees for sixty days following their termination. For performance-based awards under the plan, vesting occurs upon achievement or satisfaction of a specified performance condition. The Company considered the probability of achieving the established performance targets in determining the share-based compensation with respect to these awards at the end of each reporting period. Beginning on the fourth anniversary of the Base Date, the holders of carry units have an annual opportunity (a sixty day period determined by the administrator of the plan) to sell their units back to Neptune Holding US GP LLC (or affiliate, including the Company, designated by Neptune Holding US GP LLC). Accordingly, the carry units are presented as temporary equity on the consolidated balance sheets at fair value. Adjustments to fair value at each reporting period are recorded in paid-in capital. The right of Neptune Holding US GP LLC to assign to an affiliate, including the Company, the right to repurchase an employee’s vested units during the sixty-day period following termination, or to satisfy its obligation to repurchase an employee’s vested units during annual 60 day periods following the fourth anniversary of the Base Date, may be exercised by Neptune Holding US GP LLC in its discretion at the time a repurchase right or obligation arises. The carry unit plan requires the purchase price payable to the employee or former employee, as the case may be, to be paid in cash, a promissory note (with a term of not more than 3 years and bearing interest at the long-term applicable federal rate under Section 1274(d) of the Internal Revenue Code) or combination thereof, in each case as determined by Neptune Holding US GP LLC in its discretion at the time of the repurchase. Neptune Holding US GP LLC expects that vested units will be redeemed for shares of the Company's Class A common stock upon vesting. The Company measures the cost of employee services received in exchange for carry units based on the fair value of the award at grant date. In addition these units are presented as temporary equity on our consolidated balance sheet at fair value. For carry unit awards granted in 2016, an option pricing model was used which requires subjective assumptions for which changes in these assumptions could materially affect the fair value of the carry units outstanding. The time to liquidity event assumption was based on management’s judgment. The equity volatility assumption was estimated using the historical weekly volatility of publicly traded comparable companies. The risk-free rate assumed was based on the U.S. Constant Maturity Treasury Rates for a period matching the expected time to liquidity event. The discount for lack of marketability was based on Finnerty's (2012) average-strike put option model. For carry unit awards granted in the first and second quarter of 2017, the Company estimated the grant date fair value based on the value established in the Company's IPO. The following table summarizes activity relating to carry units: Number of Time Vesting Awards Number of Performance Based Vesting Awards Weighted Average Grant Date Fair Value Balance, December 31, 2017 168,550,001 10,000,000 $ 0.71 Vested (68,037,500 ) — 0.37 Forfeited (16,937,501 ) — 0.62 Balance, December 31, 2018 83,575,000 10,000,000 $ 1.14 The weighted average fair value per unit was $1.95 , $2.50 , and $1.76 as of December 31, 2018 , 2017 and 2016 , respectively. For the years ended December 31, 2018 , 2017 and 2016 the Company recognized an expense of $41,321 , $57,430 and $14,368 , respectively, related to the push down of share-based compensation related to the carry unit plan. Stock Option Plan In connection with the Company's IPO, the Company adopted the Altice USA 2017 Long Term Incentive Plan (the "2017 LTIP"). Under the 2017 LTIP, the Company may grant awards of options, restricted shares, restricted share units, stock appreciation rights, performance stock, performance stock units and other awards. Under the 2017 LTIP, awards may be granted to officers, employees and consultants of the Company or any of its affiliates. The 2017 LTIP is administered by the Company's Board of Directors (the "Board"), subject to the provision of the stockholders' agreement. The Board has delegated its authority to the Company's Compensation Committee. The Compensation Committee has the full power and authority to, among other things, select eligible participants, to grant awards in accordance with the 2017 LTIP, to determine the number of shares subject to each award or the cash amount payable in connection with an award and determine the terms and conditions of each award. In November 2018, the Board and the Company's stockholders holding a majority of the voting power of its capital stock approved an amendment to the 2017 LTIP, which increased the maximum aggregate number of shares that may be issued for all purposes under the Plan to 19,879,291 . The Board has the authority to amend, suspend, or terminate the 2017 LTIP. No amendment, suspension or termination will be effective without the approval of the Company's stockholders if such approval is required under applicable laws, rules and regulations. Options outstanding under the 2017 LTIP Plan either cliff vest on the third anniversary of the date of grant or vest over 4 years, where 50% vest on the second anniversary, 25% on the third anniversary and 25% on the fourth anniversary of the date of grant. The option awards generally are subject to continued employment with the Company, and expire ten years from the date of grant. Performance based option awards vest upon achievement of performance criteria. The following table summarizes activity related to employee stock options: Shares Under Option Weighted Average Exercise Price Per Share Weighted Average Remaining Contractual Term (in years) Time Vesting Performance Based Vesting Aggregate Intrinsic Value (a) Balance at December 31, 2017 5,110,747 — $ 17.45 9.97 $ 8,331 Granted 6,753,659 95,953 17.58 Forfeited (634,238 ) (22,314 ) 17.92 Balance at December 31, 2018 11,230,168 73,639 17.50 9.47 (11,057 ) Options exercisable at December 31, 2018 — — — — — (a) The aggregate intrinsic value is calculated as the difference between the exercise price and the closing price of the Company's Class A common stock at the respective date. The Company recognized share-based compensation expense related to employee stock options for the year ended December 31, 2018 of $18,491 . The Company calculated the fair value of each option award on the date of grant using the Black-Scholes valuation model. The Company's computation of expected life was determined based on the simplified method (the average of the vesting period and option term) due to the Company's lack of recent historical data for similar awards. The interest rate for periods within the contractual life of the stock option was based on interest yields for U.S. Treasury instruments in effect at the time of grant. The Company's computation of expected volatility was based on historical volatility of its common stock and the expected volatility of comparable publicly-traded companies who granted options that had similar expected lives. The following weighted-average assumptions were used to calculate the fair values of stock option awards granted during the years ended December 31, 2018 and 2017: Year Ended December 31, 2018 2017 Risk-free interest rate 2.74% 2.30% Expected life (in years) 6.49 6.44 Dividend yield —% —% Volatility 35.72% 33.95% Grant date fair value $6.91 $8.77

AFFILIATE AND RELATED PARTY TRA

AFFILIATE AND RELATED PARTY TRANSACTIONS	12 Months Ended
	Dec. 31, 2018
Related Party Transactions [Abstract]
AFFILIATE AND RELATED PARTY TRANSACTIONS	AFFILIATE AND RELATED PARTY TRANSACTIONS Equity Method Investments In April 2018, Altice Europe transferred its ownership of i24 US and i24 Europe ('i24NEWS"), Altice Europe's 24/7 international news and current affairs channels to the Company for minimal consideration (the "i24NEWS Acquisition"). As the acquisition was a combination of businesses under common control, the Company combined the results of operations and related assets and liabilities of i24NEWS as of April 1, 2018. Operating results for periods prior to April 1, 2018 and the balance sheet as of December 31, 2017 have not been revised to reflect the combination of i24NEWS as the impact was deemed immaterial. The Company's equity in the net losses of i24NEWS prior to April 1, 2018 of $1,130 and $2,821 for the year ended December 31, 2017 were recorded using the equity method and reflected in other expense, net in the Company's consolidated statements of operations. The Company's investment in i24NEWS as of December 31, 2017 of $930 is included in investment in affiliates on the Company's consolidated balance sheet. In April 2018, the Company redeemed a 24% interest in Newsday LLC ("Newsday") and recognized a gain of $13,298 , reflected in gain (loss) on investments and sale of affiliate interests, net in the Company's consolidated statements of operations. For the year ended December 31, 2018, 2017 and 2016, the Company recorded equity in the net loss of Newsday of $ 9,719 $7,219 and $1,132 , respectively, reflected in other expense, net in the Company's consolidated statements of operations. The Company's deficit investment in Newsday as of December 31, 2017 of $3,579 is included in deficit investments in affiliates on the Company's consolidated balance sheet. From July 7, 2016 through April 2018, the Company held a 25% ownership interest in Newsday and prior to July 7, 2016, Newsday was a wholly-owned subsidiary of Cablevision. Affiliate and Related Party Transactions Altice USA is controlled by Patrick Drahi who is also the controlling stockholder of Altice Europe and its subsidiaries. As the transactions discussed below were conducted between entities under common control by Mr. Drahi and equity method investees, 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 charges related to services provided to or received from subsidiaries of Altice Europe and Newsday: Years Ended December 31, 2018 2017 2016 Revenue $ 2,575 $ 1,100 $ 1,086 Operating expenses: Programming and other direct costs $ (7,261 ) $ (4,176 ) $ (1,947 ) Other operating expenses, net (16,307 ) (33,140 ) (18,854 ) Operating expenses, net (23,568 ) (37,316 ) (20,801 ) Interest expense (see Note 11) (a) (600 ) (90,405 ) (112,712 ) Other income. net 149 — — Loss on extinguishment of debt and write-off of deferred financing costs (see Note 11) — (513,723 ) — Net charges $ (21,444 ) $ (640,344 ) $ (132,427 ) Capital Expenditures $ 14,951 $ 22,012 $ 45,886 (a) The 2016 amount includes $10,155 related to Holdco Notes prior to the exchange in addition to the interest related to notes payable to affiliates and related parties discussed in Note 11. In connection with the Company's IPO in June 2017, the Company converted the notes payable to affiliates and related parties into shares of the Company’s common stock at the IPO price. Revenue The Company recognized revenue primarily from the sale of advertising to Teads. Programming and other direct costs Programming and other direct costs include costs incurred by the Company for the transport and termination of voice and data services provided by a subsidiary of Altice Europe. Other operating expenses, net A subsidiary of Altice Europe provided certain executive services, as well as consulting, advisory and other services, including, prior to the IPO, CEO, CFO and COO services, to the Company. Compensation under the terms of the agreement was an annual fee of $30,000 to be paid by the Company. Fees associated with this agreement recorded by the Company amounted to approximately $13,250 , $30,000 and $ 20,556 for the years ended December 31, 2018 , 2017 and 2016 , respectively. As of June 20, 2017, the CEO, CFO and COO became employees of the Company and the agreement was assigned to Altice Europe by a subsidiary of Altice Europe. This agreement was terminated upon the completion of the Distribution discussed in Note 1. Other operating expenses also include charges for services provided by other subsidiaries of Altice Europe aggregating $3,057 , $4,057 and $887 , for the years ended December 31, 2018, 2017 and 2016, respectively, net of a credit of $917 and $2,589 related to transition services provided to Newsday for the years ended December 31, 2017 and 2016 , respectively. Capital Expenditures Capital expenditures for the year ended December 31, 2018 include $14,951 for equipment purchased and software development services provided by subsidiaries of Altice Europe. Capital expenditures for the year ended December 31, 2017 include $17,434 of equipment purchased from Altice Labs S.A., and $4,578 of software development services, that were capitalized, from Altice Management International and other Altice Europe subsidiaries. Capital expenditures for the year ended December 31, 2016 include $44,121 of equipment purchased from Altice Management International and $1,025 from another Altice Europe subsidiary. In addition, the Company acquired certain software development services that were capitalized from Altice Labs S.A. aggregating $740 . Aggregate amounts that were due from and due to related parties are summarized below: December 31, 2018 2017 Due from: CVC 3 (a) $ 13,100 $ 12,951 Newsday (b) 490 2,713 Altice Europe (b) 1,271 33 Altice Dominican Republic (b) 2,550 — i24NEWS (b) — 4,036 Other Altice Europe subsidiaries (b) 146 31 $ 17,557 $ 19,764 Due to: Altice Europe (c) $ 15,235 $ — Newsday (b) 22 33 Altice Labs S.A. (d) 4,864 7,354 Other Altice Europe subsidiaries (d) 5,975 3,611 $ 26,096 $ 10,998 (a) Represents interest on senior notes paid by the Company on behalf of Altice US Finance S.A., which merged into CVC 3 in 2018. (b) Represents amounts paid by the Company on behalf of or for services provided to the respective related party and for Newsday, the net amounts due from the related party also include charges for certain transition services provided. (c) Includes $13,250 related to the agreement discussed above. (d) Represents amounts due to affiliates for the purchase of equipment and advertising services, as well as reimbursement for payments made on our behalf. In the second quarter of 2017, prior to the Company's IPO, the Company declared and paid cash distributions aggregating $839,700 to stockholders, $500,000 of which were funded with proceeds from borrowings under CSC Holdings' revolving credit facility. In 2016, the Company declared cash distributions of $445,176 , of which $365,559 were paid in 2016 and $79,617 were paid in the first quarter of 2017.

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES Commitments Future cash payments and commitments required under arrangements pursuant to contracts entered into by the Company in the normal course of business as of December 31, 2018 are as follows: Payments Due by Period Total Year 1 Years 2-3 Years 4-5 More than 5 years Off balance sheet arrangements: Purchase obligations (a) $ 8,906,134 $ 3,190,028 $ 4,940,814 $ 742,931 $ 32,361 Guarantees (b) 36,912 36,912 — — — Letters of credit (c) 147,564 120 147,444 — — Total $ 9,090,610 $ 3,227,060 $ 5,088,258 $ 742,931 $ 32,361 (a) Purchase obligations primarily include contractual commitments with various programming vendors to provide video services to customers and minimum purchase obligations to purchase goods or services, including contracts to acquire handsets and other equipment. Future fees payable under contracts with programming vendors are based on numerous factors, including the number of customers receiving the programming. Amounts reflected above related to programming agreements are based on the number of customers receiving the programming as of December 31, 2018 multiplied by the per customer rates or the stated annual fee, as applicable, contained in the executed agreements in effect as of December 31, 2018 . (b) Includes franchise and performance surety bonds primarily for the Company's cable television systems. (c) Represent letters of credit guaranteeing performance to municipalities and public utilities and payment of insurance premiums. Payments due by period for these arrangements represent the year in which the commitment expires although payments under these arrangements are required only in the event of nonperformance. The table above does not include obligations for payments required to be made under multi-year franchise agreements based on a percentage of revenues generated from video service per year. Many of the Company's franchise agreements and utility pole leases require the Company to remove its cable wires and other equipment upon termination of the respective agreements. The Company has concluded that the fair value of these asset retirement obligations cannot be reasonably estimated since the range of potential settlement dates is not determinable. The table above does not include obligations for rent related to utility poles used in our operations. The Company's pole rental agreements are for varying terms, and management anticipates renewals as they expire. Rent expense incurred for pole rental attachments for the years ended December 31, 2018 , 2017 and 2016 was $33,082 , $31,308 , and $22,432 , respectively. Legal Matters Following expiration of the affiliation agreements for carriage of certain Fox broadcast stations and cable networks on October 16, 2010, News Corporation terminated delivery of the programming feeds to Cablevision, and as a result, those stations and networks were unavailable on Cablevision's cable television systems. On October 30, 2010, Cablevision and Fox reached an agreement on new affiliation agreements for these stations and networks, and carriage was restored. Several purported class action lawsuits alleging breach of contract, unjust enrichment, and consumer fraud and seeking unspecified compensatory damages, punitive damages and attorneys' fees were subsequently filed on behalf of Cablevision's customers seeking recovery for the lack of Fox programming. Those lawsuits were consolidated in an action before the U. S. District Court for the Eastern District of New York, and a consolidated complaint was filed in that court on February 22, 2011. On March 28, 2012, in ruling on Cablevision's motion to dismiss, the Court dismissed all of plaintiffs’ claims, except for breach of contract. On March 30, 2014, the Court granted plaintiffs’ motion for class certification. The parties have entered into a settlement agreement, which was granted final approval by the Court on May 17, 2018. As of December 31, 2018, the Company had an estimated liability associated with the settlement totaling $5,000 . In October 2015, the New York Attorney General (“NYAG”) began an investigation into whether the major Internet Service Providers in New York State deliver advertised Internet speeds. On December 21, 2018, the Company entered into a settlement agreement with the NYAG, resolving the investigation. In the latter half of 2018, eight named plaintiffs, each on behalf of a putative class of stockholders who purchased Company common stock in the Company'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 the Company, Altice Europe, and the Company'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. Plaintiffs claim 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. The New York State Supreme Court lawsuits are presently being consolidated into one action. 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. 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 relating to Voice over Internet Protocol (“VoIP”) services. On December 3, 2018, Sprint filed a second complaint alleging that the Company infringes Sprint’s patents purportedly relating to VOD services. The lawsuits are part of a pattern of litigation that was initiated as far back as 2007 by Sprint against numerous broadband and telecommunications providers. The Company is investigating the allegations, and will 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.

BENEFIT PLANS

BENEFIT PLANS	12 Months Ended
	Dec. 31, 2018
Retirement Benefits [Abstract]
Benefit Plans	BENEFIT PLANS Qualified and Non-qualified Defined Benefit Plans Retirement Plans (collectively, the "Defined Benefit Plans") The Company sponsors a non-contributory qualified defined benefit cash balance retirement plan (the "Pension Plan") for the benefit of non-union employees of Cablevision, as well as certain employees covered by a collective bargaining agreement in Brooklyn. The Company maintains an unfunded non-contributory non-qualified defined benefit excess cash balance plan ("Excess Cash Balance Plan") covering certain current and former employees of Cablevision who participate in the Pension Plan. The Company also maintained an additional unfunded non-contributory, non-qualified defined benefit plan ("CSC Supplemental Benefit Plan") for the benefit of certain former officers and employees of Cablevision which provided that, upon retiring on or after normal retirement age, a participant receives a benefit equal to a specified percentage of the participant's average compensation, as defined. All participants were 100% vested in the CSC Supplemental Benefit Plan. The benefits related to the CSC Supplemental Plan were paid to participants in January 2017 and the plan was terminated. Cablevision's Pension Plan and the Excess Cash Balance Plan are frozen and no employee of Cablevision who was not already a participant could participate in the plans and no further annual Pay Credits (a certain percentage of employees' eligible pay) are made. Existing account balances under the plans continue to be credited with monthly interest in accordance with the terms of the plans. Plan Results for Defined Benefit Plans Summarized below is the funded status and the amounts recorded on the Company's consolidated balance sheets for all of the Company's Defined Benefit Plans at December 31, 2018 and 2017 : December 31, 2018 2017 Change in projected benefit obligation: Projected benefit obligation at beginning of year $ 299,066 $ 382,517 Interest cost 9,248 11,786 Actuarial loss (gain) (9,894 ) 13,171 Curtailments — 6,332 Settlements 2,373 6,910 Benefits paid (36,278 ) (121,650 ) Projected benefit obligation at end of year 264,515 299,066 Change in plan assets: Fair value of plan assets at beginning of year 195,768 284,118 Actual gain (loss) on plan assets, net (5,705 ) 6,356 Employer contributions 13,725 26,944 Benefits paid (36,278 ) (121,650 ) Fair value of plan assets at end of year 167,510 195,768 Unfunded status at end of year $ (97,005 ) $ (103,298 ) The accumulated benefit obligation for the Company's Defined Benefit Plans aggregated $264,515 and $299,066 at December 31, 2018 and 2017 , respectively. The Company's net funded status relating to its Defined Benefit Plans at December 31, 2018 and 2017 , is as follows: December 31, 2018 2017 Defined Benefit Plans $ (97,005 ) $ (103,298 ) Less: Current portion related to nonqualified plans 211 135 Long-term defined benefit plan obligations $ (96,794 ) $ (103,163 ) Components of the benefit costs, recorded in other income (expense), net, for the Defined Benefit Plans for the years ended December 31, 2018 , 2017 and 2016, is as follows: Years Ended December 31, 2018 2017 2016 Interest cost $ 9,248 $ 11,786 $ 6,946 Expected return on plan assets, net (987 ) (4,905 ) (3,880 ) Curtailment loss — 3,137 231 Settlement loss (income) (reclassified from accumulated other comprehensive loss) (a) 1,268 1,845 (154 ) Non-operating pension costs $ 9,529 $ 11,863 $ 3,143 (a) As a result of benefit payments to terminated or retired individuals exceeding the service and interest costs for the Pension Plan and the Excess Cash Balance Pension Plan during the years ended December 31, 2018 and 2017 and during the period June 21, 2016 through December 31, 2016, the Company recognized non-cash settlement losses that represent the acceleration of the recognition of a portion of the previously unrecognized actuarial losses recorded in accumulated other comprehensive loss on the Company’s consolidated balance sheets relating to these plans. Plan Assumptions for Defined Benefit Plans Weighted-average assumptions used to determine pension costs (made at the beginning of the year) and benefit obligations (made at the end of the year) for the Defined Benefit Plans are as follows: Benefit Costs Benefit Obligations at December 31, For the Year Ended December 31, 2018 For the Year Ended December 31, 2017 For the Period June 21, 2016 to December 31, 2016 2018 2017 Discount rate (a) 3.87 % 3.69 % 3.53 % 4.20 % 3.50 % Rate of increase in future compensation levels — % — % — % — % — % Expected rate of return on plan assets (Pension Plan only) 3.67 % 3.90 % 3.97 % N/A N/A (a) The discount rates of 3.87% 3.69% and 3.53% for the years ended December 31, 2018 and 2017 and for the period June 21, 2016 through December 31, 2016, represents the average of the quarterly discount rates used to remeasure the Company's projected benefit obligation and benefit costs in connection with the recognition of settlement losses discussed above. The discount rate used by the Company in calculating the benefit costs for the Cash Balance Plan and the Excess Cash Balance Plan was determined based on the expected future benefit payments for the plans and from the Willis Towers Watson U.S. Rate Link: 40-90 Discount Rate Model. The model was developed by examining the yields on selected highly rated corporate bonds. The Company's expected long-term return on Pension Plan assets is based on a periodic review and modeling of the plan's asset allocation structure over a long-term horizon. Expectations of returns and risk for each asset class are the most important of the assumptions used in the review and modeling and are based on comprehensive reviews of historical data, forward looking economic outlook, and economic/financial market theory. The expected long-term rate of return was chosen as a best estimate and was determined by (a) historical real returns, net of inflation, for the asset classes covered by the investment policy, and (b) projections of inflation over the long-term period during which benefits are payable to plan participants. Pension Plan Assets and Investment Policy The weighted average asset allocations of the Pension Plan at December 31, 2018 and 2017 were as follows: Plan Assets at December 31, 2018 2017 Asset Class: Mutual funds 29 % 32 % Fixed income securities 65 66 Cash equivalents and other 6 2 100 % 100 % The Pension Plan's investment objectives reflect an overall low risk tolerance to stock market volatility. This strategy allows for the Pension Plan to invest in portfolios that would obtain a rate of return throughout economic cycles, commensurate with the investment risk and cash flow needs of the Pension Plan. The investments held in the Pension Plan are readily marketable and can be sold to fund benefit payment obligations of the plan as they become payable. Investment allocation decisions are formally made by the Company's Benefit Committee, which takes into account investment advice provided by its external investment consultant. The investment consultant takes into account expected long-term risk, return, correlation, and other prudent investment assumptions when recommending asset classes and investment managers to the Company's Benefit Committee. The major categories of the Pension Plan assets are cash equivalents and bonds which are marked-to-market on a daily basis. Due to the Pension Plan's significant holdings in long-term government and non-government fixed income securities, the Pension Plan's assets are subjected to interest rate risk; specifically, a rising interest rate environment. Consequently, an increase in interest rates may cause a decrease to the overall liability of the Pension Plan thus creating a hedge against rising interest rates. In addition, a portion of the Pension Plan's bond portfolio is invested in foreign debt securities where there could be foreign currency risks associated with them, as well as in non-government securities which are subject to credit risk of the bond issuer defaulting on interest and/or principal payments. Investments at Estimated Fair Value The fair values of the assets of the Pension Plan at December 31, 2018 by asset class are as follows: Asset Class Level I Level II Level III Total Mutual funds $ 49,140 $ — $ — $ 49,140 Fixed income securities held in a portfolio: Foreign issued corporate debt — 14,002 — 14,002 U.S. corporate debt — 43,190 — 43,190 Government debt — 3,988 — 3,988 U.S. Treasury securities — 38,657 — 38,657 Asset-backed securities — 8,907 — 8,907 Other — 205 — 205 Cash equivalents (a) 4,343 3,187 — 7,530 Total (b) $ 53,483 $ 112,136 $ — $ 165,619 (a) A significant portion represents an investment in a short-term investment fund that invests primarily in securities of high quality and low risk. (b) Excludes cash and net receivables relating to the sale of securities that were not settled as of December 31, 2018 . The fair values of the assets of the Pension Plan at December 31, 2017 by asset class are as follows: Asset Class Level I Level II Level III Total Mutual funds $ 61,833 $ — $ — $ 61,833 Fixed income securities held in a portfolio: Foreign issued corporate debt — 10,721 — 10,721 U.S. corporate debt — 39,992 — 39,992 Government debt — 4,645 — 4,645 U.S. Treasury securities — 62,601 — 62,601 Asset-backed securities — 10,978 — 10,978 Cash equivalents (a) 6,691 2,782 — 9,473 Total (b) $ 68,524 $ 131,719 $ — $ 200,243 (a) A significant portion represents an investment in a short-term investment fund that invests primarily in securities of high quality and low risk. (b) Excludes cash and net payables relating to the purchase of securities that were not settled as of December 31, 2017 . The fair values of mutual funds and cash equivalents were derived from quoted market prices that the Pension Plan administrator has the ability to access. The fair values of corporate and government debt, treasury securities and asset-back securities were derived from bids received from a vendor or broker not available in an active market that the Pension Plan administrator has the ability to access. Benefit Payments and Contributions for Defined Benefit Plans The following benefit payments are expected to be paid during the periods indicated: 2019 $ 21,137 2020 17,067 2021 17,690 2022 16,837 2023 20,119 2024-2028 93,793 The Company currently expects to contribute approximately $36,000 to the Pension Plan in 2019 . Defined Contribution Plans The Company maintains the Altice USA 401(k) Savings Plan (formerly known as the Cablevision 401(k) Savings Plan), a contributory qualified defined contribution plan for the benefit of non-union employees of Cablevision. Participants can contribute a percentage of eligible annual compensation and the Company will make a matching cash contribution or discretionary contribution, as defined in the plan. In addition, the Company maintains an unfunded non-qualified Excess Savings Plan which was frozen on January 1, 2017 for which the Company provided a matching contribution similar to the Altice USA 401(k) Savings Plan. Applicable employees of the Company were eligible for an enhanced employer matching contribution, as well as a year-end employer discretionary contribution to the Cablevision 401(k) Savings Plan and the Cablevision Excess Savings Plan. Through September 30, 2017, the Company also maintained a 401(k) plan for employees of Cequel. Cequel employees that qualified for participation were able to contribute a percentage of eligible annual compensation and the Company would make a matching cash contribution, as defined in the plan. During the fourth quarter of 2017, the Cequel 401(k) plan assets were transferred to the Cablevision 401(k) Savings Plan and the plan was renamed the Altice USA 401(k) Savings Plan. The cost associated with these plans (including the enhanced employer matching and discretionary contributions in 2016) was $28,232 , $27,577 and $28,501 for the years ended December 31, 2018 , 2017 and 2016 , respectively.

ALLOWANCE FOR DOUBTFUL ACCOUNTS

ALLOWANCE FOR DOUBTFUL ACCOUNTS	12 Months Ended
	Dec. 31, 2018
Receivables [Abstract]
ALLOWANCE FOR DOUBTFUL ACCOUNTS	ALLOWANCE FOR DOUBTFUL ACCOUNTS Activity related to the Company's allowance for doubtful accounts is presented below: Balance at Beginning of Period Provision for Bad Debt Deductions/ Write-Offs and Other Charges Balance at End of Period Year Ended December 31, 2018 Allowance for doubtful accounts $ 13,420 $ 71,426 $ (71,326 ) $ 13,520 Year Ended December 31, 2017 Allowance for doubtful accounts $ 11,677 $ 74,183 $ (72,440 ) $ 13,420 Year Ended December 31, 2016 Allowance for doubtful accounts $ 1,051 $ 53,249 $ (42,623 ) $ 11,677

INTERIM FINANCIAL INFORMATION

INTERIM FINANCIAL INFORMATION	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
INTERIM FINANCIAL INFORMATION	INTERIM FINANCIAL INFORMATION (Unaudited) The following is a summary of the Company's selected quarterly financial data: Three Months Ended March 31, 2018 June 30, September 30, December 31, Total Residential: Pay TV $ 1,033,708 $ 1,034,404 $ 1,054,667 $ 1,033,649 $ 4,156,428 Broadband 701,621 712,202 729,907 743,725 2,887,455 Telephony 166,038 163,499 161,351 162,007 652,895 Business services and wholesale 333,090 337,388 344,193 348,087 1,362,758 Advertising 87,582 109,898 123,066 162,103 482,649 Other 7,675 6,762 4,617 5,369 24,423 Revenue 2,329,714 2,364,153 2,417,801 2,454,940 9,566,608 Operating expenses (2,016,676 ) (2,029,094 ) (1,912,243 ) (1,926,216 ) (7,884,229 ) Operating income $ 313,038 $ 335,059 $ 505,558 $ 528,724 $ 1,682,379 Net income (loss) $ (128,949 ) $ (98,004 ) $ 33,739 $ 213,808 $ 20,594 Net loss (income) attributable to noncontrolling interests (2 ) 149 (1,186 ) (722 ) (1,761 ) Net income (loss) attributable to Altice USA Inc.'s stockholders $ (128,951 ) $ (97,855 ) $ 32,553 $ 213,086 $ 18,833 Basic and diluted net income (loss) per share attributable to Altice USA Inc.'s stockholders $ (0.17 ) $ (0.13 ) $ 0.04 $ 0.30 $ 0.03 Three Months Ended March 31, 2017 June 30, September 30, December 31, Total Residential: Pay TV $ 1,083,878 $ 1,071,163 $ 1,069,946 $ 1,049,135 $ 4,274,122 Broadband 625,918 642,620 658,278 681,779 2,608,595 Telephony 180,961 178,261 172,479 169,064 700,765 Business services and wholesale 319,420 323,641 324,642 330,510 1,298,213 Advertising 83,361 97,501 89,292 121,712 391,866 Other 8,721 9,176 7,884 7,608 33,389 Revenue 2,302,259 2,322,362 2,322,521 2,359,808 9,306,950 Operating expenses (2,052,149 ) (2,069,094 ) (2,201,946 ) (2,142,753 ) (8,465,942 ) Operating income $ 250,110 $ 253,268 $ 120,575 $ 217,055 $ 841,008 Net income (loss) $ (76,188 ) $ (479,939 ) $ (192,434 ) $ 2,243,325 $ 1,494,764 Net income attributable to noncontrolling interests (237 ) (365 ) (135 ) (850 ) (1,587 ) Net income (loss) attributable to Altice USA, Inc. stockholders $ (76,425 ) $ (480,304 ) $ (192,569 ) $ 2,242,475 $ 1,493,177 Basic and diluted net income (loss) per share attributable to Altice USA Inc.'s stockholders $ (0.12 ) $ (0.73 ) $ (0.26 ) $ 3.04 $ 2.15 (a) In the fourth quarter of 2018, the Company recorded a non-cash deferred tax benefit of $52,915 based on a remeasurement of the Company's net deferred tax liability. See Note 14 to the consolidated financial statements for further details. (b) Pursuant to the enactment of the Tax Reform on December 22, 2017, the Company recorded a non-cash deferred tax benefit of $2,332,677 to remeasure the net deferred tax liability to adjust for the reduction in the corporate federal income tax rate 35% to 21% which was effective on January 1, 2018. The Company’s previously reported statement of cash flows for the three months ended March 31, 2017 reflected distributions to stockholders of $79,617 in cash flows from operating activities. These distributions should have been reflected in cash flows from financing activities.

SUBSEQUENT EVENTS

SUBSEQUENT EVENTS	12 Months Ended
	Dec. 31, 2018
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTS In January 2019, CSC Holdings issued $1,500,000 in aggregate principal amount of senior guaranteed notes due 2029 ("CSC Holdings 2029 Guaranteed Notes"). The notes bear interest at a rate of 6.5% and will mature on February 1, 2029. The net proceeds from the sale of the notes were used to repay certain indebtedness, including to repay at maturity $526,000 aggregate principal amount of CSC Holdings' 8.625% senior notes due February 2019 plus accrued interest, redeem approximately $905,300 of the aggregate outstanding amount of CSC Holdings' 10.125% senior notes due 2023 at a redemption price of 107.594% plus accrued interest, and paid fees and expenses associated with the transactions. In connection with this refinancing, $526,000 of short-term senior notes were reclassified to long-term debt. In January 2019, CSC Holdings borrowed $200,000 under its revolving credit facility and in February 2019, repaid $250,000 of amounts outstanding under the revolving credit facility from the proceeds of the issuance of an additional $250,000 principal amount of CSC Holdings 2029 Guaranteed Notes at a price of 101.75% of the principal value. Also, in January 2019, CSC Holdings obtained commitments to refinance its existing revolving credit facility, subject to customary closing conditions. After the refinancing, the total size of the new revolving credit facility is $2,562,500 , including $2,170,000 extended to January 2024 and priced at LIBOR plus 2.25% . The remaining $392,500 matures in November 2021. In February 2019, CSC Holdings entered into a $1,000,000 senior secured Term Loan B ("Incremental Term Loan B-4") maturing on April 15, 2027, the proceeds of which were used to redeem $894,700 in aggregate principal amount of CSC Holdings’ 10.125% Senior Notes due 2023, representing the entire aggregate principal amount outstanding, and paying related fees, costs and expenses. The Incremental Term Loan B-4 bears interest at a rate per annum equal to LIBOR plus 3.0% and was issued with an original issue discount of 1.0% .

CVC - DESCRIPTION OF BUSINESS,

CVC - DESCRIPTION OF BUSINESS, RELATED MATTERS AND BASIS OF PRESENTATION	12 Months Ended
	Dec. 31, 2018
DESCRIPTION OF BUSINESS AND RELATED MATTERS	DESCRIPTION OF BUSINESS AND RELATED MATTERS The Company and Related Matters Altice USA, Inc. ("Altice USA" or the "Company") was incorporated in Delaware on September 14, 2015 . Prior to the distribution discussed below, Altice USA was majority-owned by Altice N.V., a public company with limited liability (naamloze vennootshcap) under Dutch law. Since the completion of the Altice N.V. distribution discussed below, the Company is no longer majority-owned by Altice N.V. Altice N.V. changed its name to Altice Europe N.V. ("Altice Europe") upon completion of the distribution discussed below. The Company provides broadband communications and video services in the United States and markets its services under two brands: Optimum, in the New York metropolitan area, and Suddenlink, principally in markets in the south-central United States. It delivers broadband, pay television, telephony services, proprietary content and advertising services to residential and business customers. As these brands are managed on a consolidated basis, the Company classifies its operations in one segment. Altice Europe, through a subsidiary, acquired Cequel Corporation ("Cequel" or "Suddenlink") on December 21, 2015 ("Cequel Acquisition") and Cequel was contributed to Altice USA on June 9, 2016 . Altice USA had no operations of its own other than the issuance of debt prior to the contribution of Cequel on June 9, 2016 by Altice Europe. The results of operations of Cequel for the year ended December 31, 2016 have been included in the results of operations of Altice USA for the same period, as Cequel was under common control with Altice USA. Altice USA acquired Cablevision Systems Corporation ("Cablevision" or "Optimum") on June 21, 2016 (see discussion below) and the results of operations of Cablevision are included with the results of operations of Cequel since the date of acquisition. The accompanying combined consolidated financial statements ("consolidated financial statements") include the accounts of the Company and all subsidiaries in which the Company has a controlling interest and gives effect to the ATS Acquisition and the i24 Acquisition discussed below. All significant inter-company accounts and transactions have been eliminated in consolidation. The accompanying consolidated financial statements also reflect the retrospective adoption of Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers and ASU No. 2017‑07 Compensation-Retirement Benefits (Topic 715). See Note 4 for further details of the impact on the Company's historical financial statements. Acquisition of Cablevision Systems Corporation On June 21, 2016 (the "Cablevision Acquisition Date"), pursuant to the Agreement and Plan of Merger (the "Merger Agreement"), dated as of September 16, 2015 , by and among Cablevision, Altice Europe, Neptune Merger Sub Corp., a wholly-owned subsidiary of Altice Europe ("Merger Sub"), Merger Sub merged with and into Cablevision, with Cablevision surviving the merger (the "Cablevision Acquisition"). In connection with the Cablevision Acquisition, each outstanding share of the Cablevision NY Group Class A common stock, par value $0.01 per share ("CNYG Class A Shares"), and Cablevision NY Group Class B common stock, par value $0.01 per share ("CNYG Class B Shares", and together with the CNYG Class A Shares, the "Shares"), and together with the Cablevision NY Group Class A common stock, the "Shares" other than Shares owned by Cablevision, Altice Europe or any of their respective wholly-owned subsidiaries, in each case not held on behalf of third parties in a fiduciary capacity, received $34.90 in cash without interest, less applicable tax withholdings (the "Cablevision Acquisition Consideration"). Pursuant to an agreement, dated December 21, 2015 , by and among CVC 2 B.V., CIE Management IX Limited, for and on behalf of the limited partnerships BC European Capital IX-1 through 11 and Canada Pension Plan Investment Board, certain affiliates of BCP and CPPIB (the "Co-Investors") funded approximately $1,000,000 toward the payment of the aggregate Per Share Cablevision Acquisition Consideration, and indirectly acquired approximately 30% of the Shares of Cablevision. Also in connection with the Cablevision Acquisition, outstanding equity-based awards granted under Cablevision’s equity plans were cancelled and converted into cash based upon the $34.90 per Share Cablevision Acquisition Consideration in accordance with the original terms of the awards. The total consideration for the outstanding CNYG Class A Shares, the outstanding CNYG Class B Shares, and the equity-based awards amounted to $9,958,323 . In connection with the Cablevision Acquisition, in October 2015, Neptune Finco Corp. ("Finco"), an indirect wholly-owned subsidiary of Altice Europe formed to complete the financing described herein and the merger with CSC Holdings, LLC ("CSC Holdings"), a wholly-owned subsidiary of Cablevision, borrowed an aggregate principal amount of $3,800,000 under a term loan facility (the "Term Credit Facility") and entered into revolving loan commitments in an aggregate principal amount of $2,000,000 (the "Revolving Credit Facility" and, together with the Term Credit Facility, the "Credit Facilities"). Finco also issued $1,800,000 aggregate principal amount of 10.125% senior notes due 2023 (the "2023 Notes"), $2,000,000 aggregate principal amount of 10.875% senior notes due 2025 (the "2025 Notes"), and $1,000,000 aggregate principal amount of 6.625% senior guaranteed notes due 2025 (the "2025 Guaranteed Notes") (collectively the "Cablevision Acquisition Notes"). On June 21, 2016 , immediately following the Cablevision Acquisition, Finco merged with and into CSC Holdings, with CSC Holdings surviving the merger (the "CSC Holdings Merger"), and the Cablevision Acquisition Notes and the Credit Facilities became obligations of CSC Holdings. On June 21, 2016 , in connection with the Cablevision Acquisition, the Company issued notes payable to affiliates and related parties aggregating $1,750,000 , of which $875,000 bore interest at 10.75% and $875,000 bore interest at 11% . See Note 11 for a discussion regarding the conversion of these notes payable to shares of the Company's common stock prior to the consummation of the IPO. The Cablevision Acquisition was accounted for as a business combination in accordance with ASC Topic 805. Accordingly, the Company stepped up 100% of the assets and liabilities assumed to their fair value at the Cablevision Acquisition Date. See Note 5 for further details. Acquisition of Altice Technical Services US Corp Altice Technical Services US Corp. ("ATS") was formed to provide network construction and maintenance services and commercial and residential installations, disconnections, and maintenance. During the second quarter of 2017, a substantial portion of the Company's technical workforce at Cablevision either accepted employment with ATS or became employees of ATS and ATS commenced operations and began to perform services for the Company. A substantial portion of the Cequel technical workforce became employees of ATS in December 2017. Additionally, in the second quarter of 2017, the Company entered into an Independent Contractor Agreement with ATS that governed the terms of the services provided to the Company and entered into a Transition Services Agreement for the use of the Company's resources to provide various overhead functions to ATS, including accounting, legal and human resources and for the use of certain facilities, vehicles and technician tools during a transitional period. The Transition Services Agreement required ATS to reimburse the Company for its cost to provide such services. In January 2018, the Company acquired 70% of the equity interests in ATS for $1.00 (the "ATS Acquisition") and the Company became the owner of 100% of the equity interests in ATS in March 2018. ATS was previously owned by Altice Europe and a member of ATS's management through a holding company. As the acquisition is a combination of businesses under common control, the Company combined the results of operations and related assets and liabilities of ATS for all periods since its formation. See Note 4 for the impact of the ATS Acquisition on the Company's consolidated balance sheet and statement of operations as of and for the year ended December 31, 2017. In connection with the ATS Acquisition, the Company recorded goodwill of $23,101 , representing the amount previously transferred to ATS. Acquisition of i24NEWS In April 2018, Altice Europe transferred its ownership of i24 US and i24 Europe ("i24NEWS"), Altice Europe's 24/7 international news and current affairs channels to the Company for minimal consideration (the "i24 Acquisition"). As the acquisition was a combination of businesses under common control, the Company combined the results of operations and related assets and liabilities of i24NEWS as of April 1, 2018. Operating results for periods prior to April 1, 2018 and the balance sheet as of December 31, 2017 have not been revised to reflect the i24 Acquisition as the impact was deemed immaterial. Initial Public Offering In June 2017, the Company completed its initial public offering ("IPO") of 71,724,139 shares of its Class A common stock ( 12,068,966 shares sold by the Company and 59,655,173 shares sold by existing stockholders) at a price to the public of $30.00 per share, including the underwriters full exercise of their option to purchase 7,781,110 shares to cover overallotments. At the date of the IPO, Altice Europe owned approximately 70.2% of the Company's issued and outstanding common stock, which represented approximately 98.2% of the voting power of the Company's outstanding common stock. The Company’s Class A common stock began trading on June 22, 2017, on the New York Stock Exchange under the symbol "ATUS". In connection with the sale of its Class A common stock, the Company received proceeds of approximately $362,069 , before deducting the underwriting discount and expenses directly related to the issuance of the securities of $12,998 . The Company did not receive any proceeds from the sale of shares by the selling stockholders. In July 2017, the Company used approximately $350,120 of the proceeds to fund the redemption of $315,779 principal amount of 10.875% senior notes that mature in 2025 issued by CSC Holdings, an indirect wholly-owned subsidiary of the Company, and the related call premium of approximately $34,341 . The following organizational transactions were consummated prior to the IPO: • the Company amended and restated its certificate of incorporation to, among other things, provide for Class A common stock, Class B common stock and Class C common stock; • BC Partners LLP ("BCP") and Canada Pension Plan Investment Board (‘‘CPPIB and together with BCP, the‘‘Co-Investors’’) and Uppernext S.C.S.p. ("Uppernext"), an entity controlled by Mr. Patrick Drahi (founder and controlling stockholder of Altice Europe), exchanged their indirect ownership interest in the Company for shares of the Company’s common stock; • Neptune Management LP (‘‘Management LP’’) redeemed its Class B units for shares of the Company’s common stock that it received from the redemption of its Class B units in Neptune Holding US LP; • the Company converted $525,000 aggregate principal amount of notes issued by the Company to the Co-Investors (together with accrued and unpaid interest and applicable premium) into shares of the Company’s common stock at the IPO price (see Note 11 for further details); • $1,225,000 aggregate principal amount of notes issued by the Company to a subsidiary of Altice Europe (together with accrued and unpaid interest and applicable premium) was transferred to CVC 3 B.V., an indirect subsidiary of Altice Europe ("CVC 3") and then the Company converted such notes into shares of the Company’s common stock at the IPO price (see Note 11 for further details); • the Co-Investors, Neptune Holding US LP, A4 S.A. (an entity controlled by the family of Mr. Drahi), and former Class B unitholders of Management LP (including Uppernext) exchanged shares of the Company’s common stock for new shares of the Company’s Class A common stock; and • CVC 3 and A4 S.A. exchanged shares of the Company’s common stock for new shares of the Company’s Class B common stock. Altice Europe Distribution On June 8, 2018, Altice Europe distributed substantially all of its equity interest in the Company through a distribution in kind to holders of Altice Europe's common shares A and common shares B (the “Distribution”). The Distribution took place by way of a special distribution in kind by Altice Europe of its 67.2% interest in the Company to Altice Europe shareholders. Each shareholder of Altice Europe on May 23, 2018, the Distribution record date, received 0.4163 shares of the Company's common stock for every share held by such shareholder in Altice Europe. Between May 24, 2018 and June 4, 2018, each Altice Europe shareholder was given the opportunity to elect the percentage of shares of the Company's Class A common stock and shares of the Company's Class B common stock such shareholder would receive in the Distribution, whereby the number of shares of the Company's Class B common stock to be distributed was subject to a cap of 50% of the total shares of the Company's common stock being distributed (the “Class B Cap”). Because the Class B Cap had been exceeded, the shares of the Company's Class B common stock delivered to Altice Europe’s shareholders of record who elected to receive them were subject to proration, and such shareholders received shares of the Company's Class A common stock. Immediately following the Distribution, there were 489,384,523 shares of Altice USA Class A common stock and 247,684,443 shares of Altice USA Class B common stock outstanding. Prior to Altice Europe's announcement of the Distribution, the Board of Directors of Altice USA, acting through its independent directors, approved the payment of a $2.035 dividend to all shareholders of record on May 22, 2018. The payment of the dividend, aggregating $1,499,935 , was made on June 6, 2018, and was funded with cash at CSC Holdings LLC, a wholly-owned subsidiary of Cablevision, from financings completed in January 2018, and cash generated from operations at Cequel. In connection with the payment of the dividend, the Company recorded a decrease in retained earnings of $536,224 , representing the cumulative earnings through the payment date, and a decrease in paid in capital of $963,711 . In connection with the Distribution, the Management Advisory and Consulting Services Agreement with Altice Europe which provided certain consulting, advisory and other services was terminated. See Note 16 for further details. In addition, the Board of Directors of Altice USA also authorized a share repurchase program of $2.0 billion , effective June 8, 2018. Under the repurchase program, 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. From inception through December 31, 2018, the Company repurchased an aggregate of 28,028,680 shares for a total purchase price of approximately $500,000 . These acquired shares were retired and the cost for these shares was recorded in paid in capital in the Company's consolidated balance sheet. As of December 31, 2018, the Company had approximately $1,500,000 of availability remaining under its stock repurchase program and had 709,040,286 combined Class A and Class B shares outstanding.
Cablevision Systems Corporation And Subsidiaries
DESCRIPTION OF BUSINESS AND RELATED MATTERS	DESCRIPTION OF BUSINESS, RELATED MATTERS AND BASIS OF PRESENTATION The Company and Related Matters Cablevision Systems Corporation ("Cablevision"), through its wholly-owned subsidiary CSC Holdings, LLC ("CSC Holdings,") and collectively with Cablevision, the "Company"), owns and operates cable systems and owns companies that provide regional news, local programming and advertising sales services for the cable television industry and Ethernet-based data, Internet, voice and video transport and managed services to the business market. The Company operates and reports financial information in one segment. Prior to the sale of a 75% interest in Newsday LLC on July 7, 2016, the Company consolidating the operating results of Newsday. Effective July 7, 2016, the operating results of Newsday are no longer consolidated with those of the Company and the Company's 25% interest in the operating results of Newsday is recorded on the equity basis (see Note 16). Altice Merger On June 21, 2016 (the "Merger Date"), pursuant to the Agreement and Plan of Merger (the "Merger Agreement"), dated as of September 16, 2015, by and among Cablevision, Altice N.V. ("Altice"), Neptune Merger Sub Corp., a wholly-owned subsidiary of Altice ("Merger Sub"), Merger Sub merged with and into Cablevision, with Cablevision surviving the merger (the "Merger"). In connection with the Merger, each outstanding share of the Cablevision NY Group Class A common stock, par value $0.01 per share ("CNYG Class A Shares"), and Cablevision NY Group Class B common stock, par value $0.01 per share ("CNYG Class B Shares", and together with the CNYG Class A Shares, the "Shares") other than (i) Shares owned by Cablevision, Altice or any of their respective wholly-owned subsidiaries, in each case not held on behalf of third parties in a fiduciary capacity, received $34.90 in cash without interest, less applicable tax withholdings (the "Merger Consideration"). Pursuant to an agreement, dated December 21, 2015, by and among CVC 2B.V., CIE Management IX Limited, for and on behalf of the limited partnerships BC European Capital IX-1through 11 and Canada Pension Plan Investment Board, certain affiliates of BCP and CPPIB (the "Co-Investors") funded approximately $1,000,000 toward the payment of the aggregate Merger Consideration, and indirectly acquired approximately 30% of the Shares of Cablevision. Also in connection with the Merger, outstanding equity-based awards granted under Cablevision’s equity plans were cancelled and converted into cash based upon the $34.90 per Share merger price in accordance with the original terms of the awards. The total consideration for the outstanding CNYG Class A Shares, the outstanding CNYG Class B Shares, and the equity-based awards amounted to $9,958,323 . In connection with the Merger, in October 2015, Neptune Finco Corp. ("Finco"), an indirect wholly-owned subsidiary of Altice formed to complete the financing described herein and the merger with CSC Holdings, borrowed an aggregate principal amount of $3,800,000 under a term loan facility (the "Term Credit Facility") and entered into revolving loan commitments in an aggregate principal amount of $2,000,000 (the "Revolving Credit Facility" and, together with the Term Credit Facility, the "Credit Facilities"). Finco also issued $1,800,000 aggregate principal amount of 10.125% senior notes due 2023 (the "2023 Notes"), $2,000,000 aggregate principal amount of 10.875% senior notes due 2025 (the "2025 Notes"), and $1,000,000 aggregate principal amount of 6.625% senior guaranteed notes due 2025 (the "2025 Guaranteed Notes") (collectively the "Merger Notes"). On June 21, 2016, immediately following the Merger, Finco merged with and into CSC Holdings, with CSC Holdings surviving the merger (the "CSC Holdings Merger"), and the Merger Notes and the Credit Facilities became obligations of CSC Holdings. The accompanying financial statements represent the operating results and cash flows of the Company for the period January 1, 2016 to June 20, 2016 (Predecessor) and for the year ended December 31, 2015. The operating results of the Company for the period June 21, 2016 to December 31, 2016 (Successor) are incorporated in the consolidated financial statements of Altice USA, Inc. Basis of Presentation Principles of Consolidation The accompanying consolidated financial statements of Cablevision include the accounts of Cablevision and its majority-owned subsidiaries. Cablevision has no business operations independent of CSC Holdings, whose operating results and financial position are consolidated into Cablevision. All significant intercompany transactions and balances between Cablevision and CSC Holdings and their respective consolidated subsidiaries are eliminated in consolidation. Use of Estimates in Preparation of Financial Statements The preparation of financial statements in conformity with U.S. generally accepted accounting principles ("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 revenues 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 in the consolidated financial statements in the 2015 financial statements to conform to the 2016 presentation.

CVC - SUMMARY OF SIGNIFICANT AC

CVC - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2018
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Summary of Significant Accounting Policies Revenue Recognition Residential Services The Company derives revenue through monthly charges to residential customers of its pay television, broadband, and telephony services, including installation services. In addition, the Company derives revenue from digital video recorder ("DVR"), video-on-demand ("VOD"), pay-per-view, and home shopping commissions which are reflected in "Residential pay TV" revenues. The Company recognizes pay television, broadband, and telephony revenues as the services are provided to a customer on a monthly basis. Revenue from the sale of bundled services at a discounted rate is allocated to each product based on the standalone selling price of each performance obligation within the bundled offer. The standalone selling price requires judgment and is typically determined based on the current prices at which the separate services are sold by the Company. Installation revenue for the Company's residential services is deferred and recognized over the benefit period, which is estimated to be less than one year. The estimated benefit period takes into account both quantitative and qualitative factors including the significance of average installation fees to total recurring revenue per customer. 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 years ended December 31, 2018 , 2017 and 2016 , the amount of franchise fees and certain other taxes and fees included as a component of revenue aggregated $257,467 , $259,075 and $154,732 , respectively. Business and Wholesale Services The Company derives revenue from the sale of products and services to both large enterprise and small and medium-sized business ("SMB") customers, including broadband, telephony, networking, and pay television services reflected in "Business services and wholesale" revenues. The Company's business services also include Ethernet, data transport, and IP-based virtual private networks. The Company also provides managed services to businesses, including hosted telephony services (cloud based SIP-based private branch exchange), managed Wi-Fi, managed desktop and server backup and managed collaboration services including audio and web conferencing. The Company also offers fiber-to-the-tower services to wireless carriers for cell tower backhaul and enable wireline communications service providers to connect to customers that their own networks do not reach. The Company recognizes revenues for these services as the services are provided to a customer on a monthly basis. Substantially all of our SMB customers are billed monthly and large enterprise customers are billed in accordance with the terms of their contracts which is typically also on a monthly basis. Contracts with large enterprise customers typically range from three to five years. Installation revenue related to our large enterprise customers is deferred and recognized over the average contract term. Installation revenue related to SMB customers is deferred and recognized over the benefit period, which is less than a year. The estimated benefit period for SMB customers takes into account both quantitative and qualitative factors including the significance of average installation fees to total recurring revenue per customer. Advertising As part of the agreements under which the Company acquires pay television programming, the Company typically receives an allocation of scheduled advertising time during such programming into which the Company's cable systems can insert commercials. In several of the markets in which the Company operates, it has entered into agreements commonly referred to as interconnects with other cable operators to jointly sell local advertising. In some of these markets, the Company represents the advertising sales efforts of other cable operators; in other markets, other cable operators represent the Company. Advertising revenues are recognized when commercials are aired. Arrangements in which the Company controls the sale of advertising and acts as the principal to the transaction, the Company recognizes revenue earned from the advertising customer on a gross basis and the amount remitted to the distributor as an operating expense. Arrangements in which the Company does not control the sale of advertising and acts as an agent to the transaction, the Company recognizes revenue net of any fee remitted to the distributor. The Company's advanced advertising businesses provide data-driven, audience-based advertising solutions using advanced analytics tools that provide granular measurement of consumer groups, accurate hyper-local ratings and other insights into target audience behavior not available through traditional sample-based measurement services. Revenue earned from the Company's advanced advertising businesses are recognized when services are provided. Other Revenues derived from other sources are recognized when services are provided or events occur. Contract Assets Incremental costs incurred in obtaining a contract with a customer are deferred and recorded as a contract asset if the period of benefit is expected to be greater than one year. Sales commissions for enterprise and certain SMB customers are deferred and amortized over the average contract term. For sales commission expenses related to residential and SMB customers with a term of one year or less, the Company is utilizing the practical expedient and is recognizing the costs when incurred. Cost of fulfilling a contract with a customer are deferred and recorded as a contract asset if they generate or enhance resources of the Company that will be used in satisfying future performance obligations and are expected to be recovered. Installation costs related to residential and SMB customers that are not capitalized as part of the initial deployment of new customer premise equipment are expensed as incurred pursuant to industry-specific guidance. The following table provides information about contracts assets and contract liabilities related to contracts with customers: December 31, 2018 2017 Contract assets (a) $ 26,405 $ 24,329 Deferred revenue (b) 190,056 117,679 (a) Contract assets include primarily sales commissions for enterprise customers that are deferred and amortized over the average contract term. (b) Deferred revenue represents payments received from customers for services that have yet to be provided and installation revenue which is deferred and recognized over the benefit period. The majority of the Company's deferred revenue represents payments for services for up to one month in advance from residential and SMB customers which is realized within the following month as services are performed. 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 to five years, and services may only be terminated in accordance with the contractual terms. The following table presents the composition of revenue: Years Ended December 31, 2018 2017 2016 Residential: Pay TV $ 4,156,428 $ 4,274,122 $ 2,788,873 Broadband 2,887,455 2,608,595 1,651,574 Telephony 652,895 700,765 465,771 Business services and wholesale 1,362,758 1,298,213 819,541 Advertising 482,649 391,866 252,049 Other 24,423 33,389 39,404 Total revenue $ 9,566,608 $ 9,306,950 $ 6,017,212 Multiple-Element Transactions In the normal course of business, the Company may enter into multiple-element transactions where it is simultaneously both a customer and a vendor with the same counterparty or in which it purchases multiple products and/or services, or settles outstanding items contemporaneously with the purchase of a product or service, from a single counterparty. The Company's policy for accounting for each transaction negotiated contemporaneously is to record each deliverable of the transaction based on its best estimate of selling price in a manner consistent with that used to determine the price to sell each deliverable on a standalone basis. In determining the fair value of the respective deliverable, the Company will utilize quoted market prices (as available), historical transactions or comparable transactions. Technical and Operating Expenses Costs of revenue related to sales of services are classified as "programming and other direct costs" in the accompanying consolidated statements of operations. Programming Costs Programming expenses related to the Company's pay television service represent fees paid to programming distributors to license the programming distributed to customers. This programming is acquired generally under multi-year distribution agreements, with rates usually based on the number of customers that receive the programming. If there are periods when an existing distribution agreement has expired and the parties have not finalized negotiations of either a renewal of that agreement or a new agreement for certain periods of time, the Company continues to carry and pay for these services until execution of definitive replacement agreements or renewals. The amount of programming expense recorded during the interim period is based on the Company's estimates of the ultimate contractual agreement expected to be reached, which is based on several factors, including previous contractual rates, customary rate increases and the current status of negotiations. Such estimates are adjusted as negotiations progress until new programming terms are finalized. In addition, the Company has received, or may receive, incentives from programming distributors for carriage of the distributors' programming. The Company generally recognizes these incentives as a reduction of programming costs in "programming and other direct costs", generally over the term of the distribution agreement. Advertising Expenses Advertising costs are charged to expense when incurred and are reflected in "other operating expenses" in the accompanying consolidated statements of operations. Advertising costs amounted to $240,273 , $224,120 and $135,513 for the years ended December 31, 2018 , 2017 and 2016 , respectively. Share-Based Compensation Share-based compensation expense is based on the fair value of the portion of share-based payment awards that are ultimately expected to vest. Share-based compensation cost relates to awards of units in a carried unit plan and options. For carried interest units, the Company measures share-based compensation cost at the grant date fair value and recognizes the expense over the requisite service period or when it is probable any related performance condition will be met. For carried interest units with graded vesting requirement, compensation cost is recognized on an accelerated method under the graded vesting method over the requisite service period for the carried interest unit. Carried interest units that vest entirely at the end of the vesting requirement are expensed on a straight-line basis. The Company estimated the fair value of carried interest units using an option pricing model. Key inputs that were used in applying the option pricing method were total equity value, equity volatility, risk free rate and time to liquidity event. The estimate of total equity value was determined using a combination of the income approach, which incorporated cash flow projections that were discounted at an appropriate rate, and the market approach, which involved applying a market multiple to the Company’s projected operating results. The Company estimated volatility based on the historical equity volatility of comparable publicly-traded companies. Subsequent to the IPO, such subjective valuations and estimates were no longer necessary as the Company relied on the market price of the Company’s common stock to determine the fair value of share-based compensation awards. See Note 15 to the consolidated financial statements for additional information about our share-based compensation. For stock option awards, the Company recognizes compensation expense based on the estimated grant date fair value using the Black-Scholes valuation model and amortizes the fair value to share-based compensation expense over the requisite service period. Income Taxes The Company's provision for income taxes is based on current period income, changes in deferred tax assets and liabilities and changes in estimates with regard to uncertain tax positions. Deferred tax assets are subject to an ongoing assessment of realizability. The Company provides deferred taxes for the outside basis difference of its investment in partnerships. Cash and Cash Equivalents The Company's cash investments are placed with money market funds and financial institutions that are investment grade as rated by S&P Global Ratings and Moody's Investors Service. The Company selects money market funds that predominantly invest in marketable, direct obligations issued or guaranteed by the United States government or its agencies, commercial paper, fully collateralized repurchase agreements, certificates of deposit, and time deposits. The Company considers the balance of its investment in funds that substantially hold securities that mature within three months or less from the date the fund purchases these securities to be cash equivalents. The carrying amount of cash and cash equivalents either approximates fair value due to the short-term maturity of these instruments or are at fair value. Accounts Receivable Accounts receivable are recorded at net realizable value. The Company periodically assesses the adequacy of valuation allowances for uncollectible accounts receivable by evaluating the collectability of outstanding receivables and general factors such as historical collection experience, length of time individual receivables are past due, and the economic and competitive environment. Investments Investment securities and investment securities pledged as collateral are classified as trading securities and are stated at fair value with realized and unrealized holding gains and losses included in the consolidated statements of operations. Long-Lived Assets and Amortizable Intangible Assets Property, plant and equipment, including construction materials, are carried at cost, and include all direct costs and certain indirect costs associated with the construction of cable systems, and the costs of new equipment installations. Equipment under capital leases is recorded at the present value of the total minimum lease payments. Depreciation on equipment is calculated on the straight-line basis over the estimated useful lives of the assets or, with respect to equipment under capital leases and leasehold improvements, amortized over the shorter of the lease term or the assets' useful lives and reported in depreciation and amortization (including impairments) in the consolidated statements of operations. The Company capitalizes certain internal and external costs incurred to acquire or develop internal-use software. Capitalized software costs are amortized over the estimated useful life of the software and reported in depreciation and amortization. Customer relationships, trade names and other intangibles established in connection with acquisitions that are finite-lived are amortized in a manner that reflects the pattern in which the projected net cash inflows to the Company are expected to occur, such as the sum of the years' digits method, or when such pattern does not exist, using the straight-line basis over their respective estimated useful lives. The Company reviews its long-lived assets (property, plant and equipment, and intangible assets subject to amortization that arose from acquisitions) for impairment whenever events or circumstances indicate that the carrying amount of an asset may not be recoverable. If the sum of the expected cash flows, undiscounted and without interest, is less than the carrying amount of the asset, an impairment loss is recognized as the amount by which the carrying amount of the asset exceeds its fair value. Goodwill and Indefinite-Lived Intangible Assets Goodwill and the value of franchises acquired in purchase business combinations which have indefinite useful lives are not amortized. Rather, such assets are tested for impairment annually or upon the occurrence of a triggering event. The Company assesses qualitative factors for its reporting units that carry goodwill. If the qualitative assessment results in a conclusion that it is more likely than not that the fair value of a reporting unit exceeds the carrying value, then no further testing is performed for that reporting unit. When the qualitative assessment is not used, or if the qualitative assessment is not conclusive and it is necessary to calculate the fair value of a reporting unit, then the impairment analysis for goodwill is performed at the reporting unit level using a two-step approach. The first step of the goodwill impairment test is used to identify potential impairment by comparing the fair value of the reporting unit with its carrying amount, including goodwill utilizing an enterprise-value based premise approach. If the carrying amount of the reporting unit exceeds its fair value, the second step of the goodwill impairment test is performed to measure the amount of goodwill impairment loss, if any. The second step of the goodwill impairment test compares the implied fair value of the reporting unit's goodwill with the carrying amount of that goodwill. If the carrying amount of the reporting unit's goodwill exceeds the implied fair value of that goodwill, an impairment loss is recognized in an amount equal to that excess. The implied fair value of goodwill is determined in the same manner as the amount of goodwill which would be recognized in a business combination. The Company assesses qualitative factors to determine whether it is necessary to perform the one-step quantitative identifiable indefinite-lived intangible assets impairment test. This quantitative test is required only if the Company concludes that it is more likely than not that a unit of accounting’s fair value is less than its carrying amount. When the qualitative assessment is not used, or if the qualitative assessment is not conclusive, the impairment test for other intangible assets not subject to amortization requires a comparison of the fair value of the intangible asset with its carrying value. If the carrying value of the indefinite-lived intangible asset exceeds its fair value, an impairment loss is recognized in an amount equal to that excess. Deferred Financing Costs Deferred financing costs are being amortized to interest expense using the effective interest method over the terms of the related debt. Derivative Financial Instruments The Company accounts for derivative financial instruments as either assets or liabilities measured at fair value. The Company uses derivative instruments to manage its exposure to market risks from changes in certain equity prices and interest rates and does not hold or issue derivative instruments for speculative or trading purposes. These derivative instruments are not designated as hedges, and changes in the fair values of these derivatives are recognized in the consolidated statements of operations as gain (loss) on derivative contracts or gain (loss) on interest rate swap contracts. Commitments and Contingencies Liabilities for loss contingencies arising from claims, assessments, litigation, fines and penalties and other sources are recorded when the Company believes it is probable that a liability has been incurred and the amount of the contingency can be reasonably estimated. Foreign Currency Certain of the Company's i24NEWS subsidiaries are located outside the United States. The functional currency for these subsidiaries is determined based on the primary economic environment in which the subsidiary operates. Revenues and expenses for these subsidiaries are translated into U.S. dollars using rates that approximate those in effect during the period while the assets and liabilities are translated into U.S. dollars using exchange rates in effect at the end of each period. The resulting gains and losses from these translations are recognized in cumulative translation adjustment included in accumulated other comprehensive loss in stockholders’ equity on the consolidated balance sheets. Common Stock of Altice USA Each holder of Class A common stock has one vote per share while holders of Class B common stock have twenty-five votes per share. Class B shares can be converted to Class A common stock at anytime with a conversion ratio of one Class A common share for one Class B common share. The following table provides details of the Company's shares of common stock outstanding: Shares of Common Stock Outstanding Class A Common Stock Class B Common Stock Balance at June 21, 2017 and December 31, 2017 246,982,292 490,086,674 Altice Europe Distribution on June 8, 2018 (see Note 1) 242,402,231 (242,402,231 ) Conversion of Class B common stock to Class A common stock 34,708,184 (34,708,184 ) Retirement of Class A common shares in connection with the Company's stock repurchase plan (see Note 1) (28,028,680 ) — Balance at December 31, 2018 496,064,027 212,976,259 Dividends and Distributions The Company may pay dividends on its capital stock only from net profits and surplus as determined under Delaware law. If dividends are paid on the Altice USA common stock, holders of the Altice USA Class A common stock and Altice USA Class B common stock are entitled to receive dividends, and other distributions in cash, stock or property, equally on a per share basis, except that stock dividends with respect to Altice USA Class A common stock may be paid only with shares of Altice USA Class A common stock and stock dividends with respect to Altice USA Class B common stock may be paid only with shares of Altice USA Class B common stock. The Company's indentures restrict the amount of dividends and distributions in respect of any equity interest that can be made. In 2018, the Company paid dividends of $1,499,935 (see discussion in Note 1). Prior to the Company's IPO, the Company declared and paid cash distributions to stockholders aggregating $839,700 in the second quarter of 2017. In 2016, the Company declared cash distributions of $445,176 of which $365,559 were paid in 2016 and $79,617 were paid in the first quarter of 2017. 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. Diluted net loss per common share attributable to Altice USA stockholders excludes the effects of common stock equivalents as they are anti-dilutive. The weighted average number of shares used to compute basic and diluted net income (loss) per share reflect the retroactive impact of the organizational transactions, discussed in Note 1, that occurred prior to the Company's IPO. The weighted average shares used in the calculation of the diluted net income per share attributable to Altice USA stockholders for the years ended December 31, 2018 and 2017 is the same as the weighted average shares used in the calculation of basic net income per share as the weighted average common stock equivalents totaling approximately 6,292,000 shares and 14,000 shares, respectively, were antidilutive. Concentrations of Credit Risk Financial instruments that may potentially subject the Company to a concentration of credit risk consist primarily of cash and cash equivalents and trade account receivables. The Company monitors the financial institutions and money market funds where it invests its cash and cash equivalents with diversification among counterparties to mitigate exposure to any single financial institution. The Company's emphasis is primarily on safety of principal and liquidity and secondarily on maximizing the yield on its investments. Management believes that no significant concentration of credit risk exists with respect to its cash and cash equivalents because of its assessment of the creditworthiness and financial viability of the respective financial institutions. The Company did not have a single customer that represented 10% or more of its consolidated revenues for the years ended December 31, 2018 , 2017 and 2016 or 10% or more of its consolidated net trade receivables at December 31, 2018 , and 2017 , respectively. Use of Estimates in Preparation of Financial Statements The preparation of financial statements in conformity with U.S. generally accepted accounting principles ("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 revenues and expenses during the reporting period. Actual results could differ from those estimates. See Note 13 for a discussion of fair value estimates. Reclassifications Certain reclassifications have been made to the 2017 and 2016 financial statements to conform to the 2018 presentation.
Cablevision Systems Corporation And Subsidiaries
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Summary of Significant Accounting Policies Revenue Recognition The Company recognizes video, high-speed data, and voice services revenues as the services are provided to customers. Revenue received from customers who purchase bundled services at a discounted rate is allocated to each product in a pro-rata manner based on the individual product’s selling price (generally, the price at which the product is regularly sold on a standalone basis). Installation revenue for the Company's video, consumer high-speed data and VoIP services is recognized as installations are completed, as direct selling costs have exceeded this revenue in all periods reported. Advertising revenues are recognized when commercials are aired. Revenues derived from other sources are recognized when services are provided or events occur. Multiple-Element Transactions In the normal course of business, the Company may enter into multiple-element transactions where it is simultaneously both a customer and a vendor with the same counterparty or in which it purchases multiple products and/or services, or settles outstanding items contemporaneous with the purchase of a product or service from a single counterparty. The Company's policy for accounting for each transaction negotiated contemporaneously is to record each deliverable of the transaction based on its best estimate of selling price in a manner consistent with that used to determine the price to sell each deliverable on a standalone basis. In determining the fair value of the respective deliverable, the Company will utilize quoted market prices (as available), historical transactions or comparable transactions. Gross Versus Net Revenue Recognition In the normal course of business, 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. The Company's policy is that, in instances where the tax is being assessed directly on the Company, amounts paid to the governmental authorities and amounts received from the customers are recorded on a gross basis. That is, amounts paid to the governmental authorities are recorded as programming and other direct costs and amounts received from the customer are recorded as revenue. For the period January 1, 2016 through June 20, 2016 and for the year ended December 31, 2015, the amount of franchise fees and certain other taxes and fees included as a component of revenue aggregated $95,432 and $199,701 , respectively. Technical and Operating Expenses Costs of revenue related to sales of services are classified as "programming and other direct costs" in the accompanying consolidated statements of operations. Programming Costs Programming expenses related to the Company's video service represent fees paid to programming distributors to license the programming distributed to subscribers. This programming is acquired generally under multi-year distribution agreements, with rates usually based on the number of subscribers that receive the programming. There have been periods when an existing distribution agreement has expired and the parties have not finalized negotiations of either a renewal of that agreement or a new agreement for certain periods of time. In substantially all these instances, the Company continues to carry and pay for these services until execution of definitive replacement agreements or renewals. The amount of programming expense recorded during the interim period is based on the Company's estimates of the ultimate contractual agreement expected to be reached, which is based on several factors, including previous contractual rates, customary rate increases and the current status of negotiations. Such estimates are adjusted as negotiations progress until new programming terms are finalized. In addition, the Company has received, or may receive, incentives from programming distributors for carriage of the distributors' programming. The Company generally recognizes these incentives as a reduction of programming costs in "programming and other direct costs", generally over the term of the distribution agreement. Advertising Expenses Advertising costs are charged to expense when incurred and are reflected in "other operating expenses" in the accompanying consolidated statements of operations. Advertising costs amounted to $62,760 and $160,671 , for the period January 1, 2016 through June 20, 2016 and for the year ended December 31, 2015, respectively. Share-Based Compensation Share-based compensation expense is based on the fair value of the portion of share-based payment awards that are ultimately expected to vest. For share-based compensation awards that can be settled in cash, the Company recognizes compensation expense based on the estimated fair value of the award at each reporting period. For options and performance based option awards, Cablevision recognized compensation expense based on the estimated grant date fair value using the Black-Scholes valuation model. For options not subject to performance based vesting conditions, Cablevision recognized the compensation expense using a straight-line amortization method. For options subject to performance based vesting conditions, Cablevision recognized compensation expense based on the probable outcome of the performance criteria over the requisite service period for each tranche of awards. For restricted shares, Cablevision recognized compensation expense using a straight-line amortization method based on the grant date price of CNYG Class A common stock over the vesting period. For restricted stock units granted to non-employee director which vested 100% on the date of grant, compensation expense was recognized on the date of grant based on the grant date price of CNYG Class A common stock. For performance based restricted stock units ("PSUs") which cliff vested in three years, Cablevision recognized compensation expense on a straight-line basis over the vesting period based on the estimated number of shares of CNYG Class A common stock expected to be issued. Income Taxes The Company's provision for income taxes is based on current period income, changes in deferred tax assets and liabilities and changes in estimates with regard to uncertain tax positions. Deferred tax assets are subject to an ongoing assessment of realizability. The Company provides deferred taxes for the outside basis difference of its investment in partnerships. In the second quarter of 2016, the Company changed its accounting policy on a prospective basis to present interest expense relating to uncertain tax position as additional interest expense. Cash and Cash Equivalents The Company's cash investments are placed with money market funds and financial institutions that are investment grade as rated by Standard & Poor's and Moody's Investors Service. The Company selects money market funds that predominantly invest in marketable, direct obligations issued or guaranteed by the United States government or its agencies, commercial paper, fully collateralized repurchase agreements, certificates of deposit, and time deposits. The Company considers the balance of its investment in funds that substantially hold securities that mature within three months or less from the date the fund purchases these securities to be cash equivalents. The carrying amount of cash and cash equivalents either approximates fair value due to the short-term maturity of these instruments or are at fair value. Accounts Receivable Accounts receivable are recorded at net realizable value. The Company periodically assesses the adequacy of valuation allowances for uncollectible accounts receivable by evaluating the collectability of outstanding receivables and general factors such as historical collection experience, length of time individual receivables are past due, and the economic and competitive environment. Investments Investment securities and investment securities pledged as collateral are classified as trading securities and are stated at fair value with realized and unrealized holding gains and losses included in net income. Long-Lived Assets and Amortizable Intangible Assets Property, plant and equipment, including construction materials, are carried at cost, and include all direct costs and certain indirect costs associated with the construction of cable systems, and the costs of new equipment installations. Equipment under capital leases is recorded at the present value of the total minimum lease payments. Depreciation on equipment is calculated on the straight-line basis over the estimated useful lives of the assets or, with respect to equipment under capital leases and leasehold improvements, amortized over the shorter of the lease term or the assets' useful lives and reported in depreciation and amortization (including impairments) in the consolidated statements of operations. The Company capitalizes certain internal and external costs incurred to acquire or develop internal-use software. Capitalized software costs are amortized over the estimated useful life of the software and reported in depreciation and amortization (including impairments). Customer relationships, trade names and other intangibles established in connection with acquisitions that are finite-lived are amortized in a manner that reflects the pattern in which the projected net cash inflows to the Company are expected to occur, such as the sum of the years' digits method, or when such pattern does not exist, using the straight-line basis over their respective estimated useful lives. The Company reviews its long-lived assets (property, plant and equipment, and intangible assets subject to amortization that arose from acquisitions) for impairment whenever events or circumstances indicate that the carrying amount of an asset may not be recoverable. If the sum of the expected cash flows, undiscounted and without interest, is less than the carrying amount of the asset, an impairment loss is recognized as the amount by which the carrying amount of the asset exceeds its fair value. Goodwill and Indefinite-Lived Intangible Assets Goodwill and the value of franchises, trademarks, and certain other intangibles acquired in purchase business combinations which have indefinite useful lives are not amortized. Rather, such assets are tested for impairment annually or upon the occurrence of a triggering event. The Company assesses qualitative factors for its reporting units that carry goodwill. If the qualitative assessment results in a conclusion that it is more likely than not that the fair value of a reporting unit exceeds the carrying value, then no further testing is performed for that reporting unit. When the qualitative assessment is not used, or if the qualitative assessment is not conclusive and it is necessary to calculate the fair value of a reporting unit, then the impairment analysis for goodwill is performed at the reporting unit level using a two-step approach. The first step of the goodwill impairment test is used to identify potential impairment by comparing the fair value of the reporting unit with its carrying amount, including goodwill utilizing an enterprise-value based premise approach. If the carrying amount of the reporting unit exceeds its fair value, the second step of the goodwill impairment test is performed to measure the amount of goodwill impairment loss, if any. The second step of the goodwill impairment test compares the implied fair value of the reporting unit's goodwill with the carrying amount of that goodwill. If the carrying amount of the reporting unit's goodwill exceeds the implied fair value of that goodwill, an impairment loss is recognized in an amount equal to that excess. The implied fair value of goodwill is determined in the same manner as the amount of goodwill which would be recognized in a business combination. The Company assesses qualitative factors to determine whether it is necessary to perform the one-step quantitative identifiable indefinite-lived intangible assets impairment test. This quantitative test is required only if the Company concludes that it is more likely than not that a unit of accounting’s fair value is less than its carrying amount. When the qualitative assessment is not used, or if the qualitative assessment is not conclusive, the impairment test for other intangible assets not subject to amortization requires a comparison of the fair value of the intangible asset with its carrying value. If the carrying value of the indefinite-lived intangible asset exceeds its fair value, an impairment loss is recognized in an amount equal to that excess. Deferred Financing Costs Deferred financing costs are being amortized to interest expense using the effective interest method over the terms of the related debt. Derivative Financial Instruments The Company accounts for derivative financial instruments as either assets or liabilities measured at fair value. The Company uses derivative instruments to manage its exposure to market risks from changes in certain equity prices and interest rates and does not hold or issue derivative instruments for speculative or trading purposes. These derivative instruments are not designated as hedges, and changes in the fair values of these derivatives are recognized in the statements of income as gains (losses) on derivative contracts. Commitments and Contingencies Liabilities for loss contingencies arising from claims, assessments, litigation, fines and penalties and other sources are recorded when the Company believes it is probable that a liability has been incurred and the amount of the contingency can be reasonably estimated. Recently Adopted Accounting Pronouncements In November 2015, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2015-17 (Topic 740), Balance Sheet Classification of Deferred Taxes. This ASU amends existing guidance to require the presentation of deferred tax liabilities and assets as noncurrent within a classified statement of financial position. ASU No. 2015-17 was adopted by the Company as of June 30, 2016 and was applied prospectively to all deferred tax liabilities and assets. In September 2015, the FASB issued ASU No. 2015-16, Simplifying the Accounting for Measurement-Period Adjustments, which requires that an acquirer recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amounts are determined. Prior to the issuance of the standard, entities were required to retrospectively apply adjustments made to provisional amounts recognized in a business combination. ASU No. 2015-16 was adopted by the Company on January 1, 2016. In April 2015, the FASB issued ASU No. 2015-05, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement. ASU No. 2015-05 provides guidance to customers about whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, then the customer should account for the software license element of the arrangement consistent with the acquisition of other software licenses. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. ASU No. 2015-05 was adopted by the Company on January 1, 2016 and did not have a material impact on the Company's consolidated financial statements. In April 2015, the FASB issued ASU No. 2015-03, Simplifying the Presentation of Debt Issuance Costs, which requires debt issuance costs to be presented in the balance sheet as a direct deduction from the carrying value of the associated debt liability, consistent with the presentation of a debt discount. In August 2015, the FASB issued ASU No. 2015-15, Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements, which clarifies the treatment of debt issuance costs from line-of-credit arrangements after adoption of ASU No. 2015-03. ASU No. 2015-15 clarifies that the Securities and Exchange Commission staff would not object to an entity deferring and presenting debt issuance costs as an asset and subsequently amortizing the deferred debt issuance costs ratably over the term of the line-of-credit arrangement, regardless of whether there are any outstanding borrowings on the line-of-credit arrangement. ASU No. 2015-03 was adopted by the Company on January 1, 2016 representing a change in accounting principle and was applied retrospectively to all periods presented. Debt issuance costs, net for the Company of $67,119 , as of December 31, 2015 were reclassified from deferred financing costs and presented as a reduction to debt in the consolidated balance sheets. Debt issuance costs, net for the Company of $7,588 as of December 31, 2015 relating to its revolving credit facility were not impacted by the adoption of ASU No. 2015-03 and are reflected as long-term assets in the accompanying consolidated balance sheets. In August 2014, the FASB issued ASU No. 2014-15, Disclosures of Uncertainties about an Entity's Ability to Continue as a Going Concern, which requires management to evaluate whether there are conditions or events that raise substantial doubt about the entity's ability to continue as a going concern, and to provide certain disclosures when it is probable that the entity will be unable to meet its obligations as they become due within one year after the date that the financial statements are issued. ASU No. 2014-15 was adopted by the Company on January 1, 2016. In June 2014, the FASB issued ASU No. 2014-12, Compensation - Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved After the Requisite Service Period. ASU No. 2014-12 requires that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. Entities may apply the amendments in this ASU either: (a) prospectively to all awards granted or modified after the effective date; or (b) retrospectively to all awards with performance targets that are outstanding as of the beginning of the earliest annual period presented in the financial statements and to all new or modified awards thereafter. ASU No. 2014-12 was adopted by the Company on January 1, 2016 on a prospective basis and did not have any impact on the Company’s consolidated financial statements. Recently Issued But Not Yet Adopted Accounting Pronouncements In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, requiring an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. ASU No. 2014-09 will replace most existing revenue recognition guidance in GAAP when it becomes effective and allows the use of either the retrospective or cumulative effect transition method. In August 2015, the FASB issued ASU No. 2015-14 that approved deferring the effective date by one year so that ASU No. 2014-09 would become effective for the Company on January 1, 2018. The FASB also approved, in July 2015, permitting the early adoption of ASU No. 2014-09, but not before the original effective date for the Company of January 1, 2017. In December 2016, the FASB issued ASU No. 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers, in order to clarify the Codification and to correct any unintended application of the guidance. These items are not expected to have a significant effect on the current accounting standard. The amendments in this update affect the guidance in ASU No. 2014-09, which is not yet effective. ASU No. 2014-09 will be effective, reflecting the one-year deferral, for interim and annual periods beginning after December 15, 2017 (January 1, 2018 for the Company). Early adoption of the standard is permitted but not before the original effective date. Companies can transition to the standard either retrospectively or as a cumulative-effect adjustment as of the date of adoption. The Company is in the process of evaluating the impact that the adoption of ASU No. 2014-09 will have on its consolidated financial statements and selecting the method of transition to the new standard. We currently expect the adoption to impact the timing of the recognition of residential installation revenue and the recognition of commission expenses. In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash, which requires that the statement of cash flows disclose the change during the period in the total of cash, cash equivalents, restricted cash and restricted cash equivalents. Restricted cash should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of period total amounts shown on the statement of cash flows. ASU No. 2016-18 provides specific guidance on the presentation of restricted cash in the statement of cash flows. The new guidance becomes effective for the Company on January 1, 2019 with early adoption permitted and will be applied retrospectively. In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments which clarifies how entities should classify certain cash receipts and cash payments on the statement of cash flows. ASU No. 2016-15 also clarifies how the predominance principle should be applied when cash receipts and cash payments have aspects of more than one class of cash flows. The new guidance becomes effective for the Company on January 1, 2018 with early adoption permitted and will be applied retrospectively. The Company has not yet completed the evaluation of the effect that ASU No. 2016-15 will have on its consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, Compensation—Stock Compensation: Improvements to Employee Share-Based Payment Accounting, which provides simplification of income tax accounting for share-based payment awards. The new guidance becomes effective for the Company on January 1, 2017 with early adoption permitted. Amendments related to the timing of when excess tax benefits are recognized, minimum statutory withholding requirements, forfeitures, and intrinsic value will be applied using the modified retrospective transition method. Amendments requiring recognition of excess tax benefits and tax deficiencies in the income statement and the practical expedient for estimating expected term will be applied prospectively. The Company may elect to apply the amendments related to the presentation of excess tax benefits on the statement of cash flows using either a prospective transition method or a retrospective transition method. In connection with the adoption on January 1, 2017, a deferred tax asset of approximately $309,000 for previously unrealized excess tax benefits will be recognized with the offset recorded to accumulated deficit. In February 2016, the FASB issued ASU 2016-02, Leases , which increases transparency and comparability by recognizing a lessee’s rights and obligations resulting from leases by recording them on the balance sheet as lease assets and lease liabilities. The new guidance becomes effective for the Company on January 1, 2019 with early adoption permitted and will be applied using the modified retrospective method. The Company has not yet completed the evaluation of the effect that ASU No. 2016-02 will have on its consolidated financial statements. Common Stock of Cablevision Prior to the Merger, each holder of CNYG Class A common stock had one vote per share while holders of CNYG Class B common stock had ten votes per share. CNYG Class B shares could be converted to CNYG Class A common stock at anytime with a conversion ratio of one CNYG Class A common share for one CNYG Class B common share. CNYG Class A stockholders were entitled to elect 25% of Cablevision's Board of Directors. CNYG Class B stockholders had the right to elect the remaining members of Cablevision's Board of Directors. In addition, CNYG Class B stockholders were parties to an agreement which had the effect of causing the voting power of these CNYG Class B stockholders to be cast as a block. The following table provides details of Cablevision's shares of common stock through the Merger Date: Shares of Common Stock Outstanding Class A Common Stock Class B Common Stock Balance at December 31, 2014 220,219,935 54,137,673 Employee and non-employee director stock transactions (a) 2,352,275 — Balance at December 31, 2015 222,572,210 54,137,673 Employee and non-employee director stock transactions (a) (185,276 ) — Balance at June 20, 2016 222,386,934 54,137,673 (a) Primarily included issuances of common stock in connection with employee and non-employee director exercises of stock options and restricted shares granted to employees, offset by shares acquired by the Company in connection with the fulfillment of employees' statutory tax withholding obligation for applicable income and other employment taxes and forfeited employee restricted shares. Dividends Pursuant to the terms of the Merger Agreement, Cablevision was not permitted to declare and pay dividends or repurchase stock, in each case, without the prior written consent of Altice. In accordance with these terms, Cablevision did not declare dividends during the period January 1, 2016 through June 20, 2016. During the period January 1, 2016 through June 20, 2016, Cablevision paid $4,066 related to restricted shares that vested in respect of dividends declared and accrued on the CNYG common stock in prior periods. Prior to the Merger, the Board of Directors of Cablevision had declared and paid the following cash dividends to stockholders of record on both its CNYG Class A common stock and CNYG Class B common stock: Declaration Date Dividend per Share Record Date Payment Date August 6, 2015 $0.15 August 21, 2015 September 10, 2015 May 1, 2015 $0.15 May 22, 2015 June 12, 2015 February 24, 2015 $0.15 March 16, 2015 April 3, 2015 Cablevision paid dividends aggregating $125,170 during the year ended December 31, 2015, including accrued dividends on vested restricted shares of $3,935 . Cablevision's and CSC Holdings' indentures and CSC Holdings' credit agreement restrict the amount of dividends and distributions in respect of any equity interest that can be made. Income (Loss) Per Share Basic income per common share attributable to Cablevision stockholders was computed by dividing net income attributable to Cablevision stockholders by the weighted average number of common shares outstanding during the period. Diluted income per common share attributable to Cablevision stockholders reflected the dilutive effects of stock options, restricted stock and restricted stock units. For such awards that were performance based, the diluted effect was reflected upon the achievement of the performance criteria. 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 Cablevision stockholders: January 1, 2016 to June 20, 2016 Years Ended December 31, 2015 Basic weighted average shares outstanding 272,035 269,388 Effect of dilution: Stock options 4,444 3,532 Restricted stock 3,720 3,419 Diluted weighted average shares outstanding 280,199 276,339 Anti-dilutive shares (options whose exercise price exceeds the average market price of Cablevision's common stock during the period and certain restricted shares) totaling approximately 1,160,000 shares were excluded from diluted weighted average shares outstanding for the years ended 2015. There were no anti-dilutive shares excluded from diluted weighted average shares outstanding for the period January 1, 2016 to June 20, 2016. In addition, approximately 1,772,000 performance based restricted stock units for the year ended December 31, 2015 issued pursuant to the Company's former employee stock plan were also excluded from the diluted weighted average shares outstanding as the performance criteria on these awards had not yet been satisfied for the respective period. Net income (loss) per share for Cablevision subsequent to the merger is not presented since Cablevision's common stock is no longer publicly traded. Concentrations of Credit Risk Financial instruments that may potentially subject the Company to a concentration of credit risk consist primarily of cash and cash equivalents and trade account receivables. The Company monitors the financial institutions and money market funds where it invests its cash and cash equivalents with diversification among counterparties to mitigate exposure to any single financial institution. The Company's emphasis is primarily on safety of principal and liquidity and secondarily on maximizing the yield on its investments. Management believes that no significant concentration of credit risk exists with respect to its cash and cash equivalents balances because of its assessment of the creditworthiness and financial viability of the respective financial institutions. The Company did not have a single customer that represented 10% or more of its consolidated revenues for the period January 1, 2016 through June 20, 2016 and the year ended December 31, 2015, or 10% or more of its consolidated net trade receivables at December 31, 2015.

CVC - ALLOWANCE FOR DOUBTFUL AC

CVC - ALLOWANCE FOR DOUBTFUL ACCOUNTS	12 Months Ended
	Dec. 31, 2018
ALLOWANCE FOR DOUBTFUL ACCOUNTS	ALLOWANCE FOR DOUBTFUL ACCOUNTS Activity related to the Company's allowance for doubtful accounts is presented below: Balance at Beginning of Period Provision for Bad Debt Deductions/ Write-Offs and Other Charges Balance at End of Period Year Ended December 31, 2018 Allowance for doubtful accounts $ 13,420 $ 71,426 $ (71,326 ) $ 13,520 Year Ended December 31, 2017 Allowance for doubtful accounts $ 11,677 $ 74,183 $ (72,440 ) $ 13,420 Year Ended December 31, 2016 Allowance for doubtful accounts $ 1,051 $ 53,249 $ (42,623 ) $ 11,677
Cablevision Systems Corporation And Subsidiaries
ALLOWANCE FOR DOUBTFUL ACCOUNTS	ALLOWANCE FOR DOUBTFUL ACCOUNTS Activity related to the allowance for doubtful accounts: Balance at Beginning of Period Provision for Bad Debt Deductions/ Write-Offs and Other Charges Balance at End of Period Period from January 1, 2016 through June 20, 2016 Allowance for doubtful accounts $ 6,039 $ 13,240 $ (12,378 ) $ 6,901 Year Ended December 31, 2015 Allowance for doubtful accounts $ 12,112 $ 35,802 $ (41,875 ) $ 6,039

CVC - SUPPLEMENTAL CASH FLOW IN

CVC - SUPPLEMENTAL CASH FLOW INFORMATION	12 Months Ended
	Dec. 31, 2018
SUPPLEMENTAL CASH FLOW INFORMATION	SUPPLEMENTAL CASH FLOW INFORMATION The Company's non-cash investing and financing activities and other supplemental data were as follows: Years Ended December 31, 2018 2017 2016 Non-Cash Investing and Financing Activities: Conversion of notes payable to affiliates and related parties of $1,750,000 (together with accrued and unpaid interest and applicable premium) to common stock (See Note 11) $ — $ 2,264,252 $ — Property and equipment accrued but unpaid 213,936 171,604 155,653 Distributions declared but not paid — — 79,617 Leasehold improvements paid by landlord 350 3,998 — Notes payable issued to vendor for the purchase of equipment 95,394 40,131 12,449 Capital lease obligations 13,548 9,385 — Deferred financing costs accrued but unpaid 1,005 — 2,570 Contingent consideration for acquisitions 6,195 32,233 — Receivable related to the sale of an investment 4,015 — — Supplemental Data: Cash interest paid 1,481,468 1,765,126 1,192,370 Income taxes paid, net 13,667 29,006 1,538
Cablevision Systems Corporation And Subsidiaries
SUPPLEMENTAL CASH FLOW INFORMATION	SUPPLEMENTAL CASH FLOW INFORMATION The Company's non-cash investing and financing activities and other supplemental data were as follows: January 1, 2016 to June 20, 2016 Years Ended December 31, 2015 Non-Cash Investing and Financing Activities: Continuing Operations: Property and equipment accrued but unpaid $ 68,356 $ 63,843 Notes payable to vendor — 8,318 Capital lease obligations — 19,987 Intangible asset obligations 290 1,121 Non-Cash Investing and Financing Activities: Dividends payable on unvested restricted share awards — 3,517 Supplemental Data: Continuing Operations: Cash interest paid 258,940 560,361 Income taxes paid, net 7,082 3,849

CVC - RESTRUCTURING AND OTHER E

CVC - RESTRUCTURING AND OTHER EXPENSE	12 Months Ended
	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
RESTRUCTURING COSTS AND OTHER EXPENSE	RESTRUCTURING AND OTHER EXPENSE Restructuring Beginning in the first quarter of 2016, the Company commenced restructuring initiatives that were intended to simplify the Company's organizational structure. The following table summarizes the activity for these initiatives: Severance and Other Employee Related Costs Facility Realignment and Other Costs Total Restructuring charges incurred in 2016 $ 215,420 $ 11,157 $ 226,577 Payments and other (113,301 ) (2,760 ) (116,061 ) Accrual balance at December 31, 2016 102,119 8,397 110,516 Restructuring charges 142,679 7,243 149,922 Payments and other (131,324 ) (6,014 ) (137,338 ) Accrual balance at December 31, 2017 $ 113,474 $ 9,626 $ 123,100 Restructuring charges 15,580 15,447 31,027 Payments and other (107,600 ) (11,458 ) (119,058 ) Accrual balance at December 31, 2018 $ 21,454 $ 13,615 $ 35,069 Cumulative costs to date relating to these initiatives amounted to $407,526 . Transaction Costs For the year ended December 31, 2018 , the Company incurred transaction costs of $7,521 relating to the Distribution discussed in Note 1. For the year ended December 31, 2017 , the Company incurred transaction costs of $2,479 related to the acquisition of a business during the first quarter of 2017 and other transactions. For the year ended December 31, 2016 , the Company incurred transaction costs of $13,845 , related primarily to the acquisition of Cablevision.
Cablevision Systems Corporation And Subsidiaries
Restructuring Cost and Reserve [Line Items]
RESTRUCTURING COSTS AND OTHER EXPENSE	RESTRUCTURING AND OTHER EXPENSE Restructuring The Company recorded net restructuring charges (credits) of $2,299 and $(1,649) , for the period January 1, 2016 through June 20, 2016 and for the year ended December 31, 2015, respectively. The 2016 and 2015 restructuring expense (credit) primarily related to changes to the Company's previous estimates recorded in connection with the Company's prior restructuring plans. Subsequent to the Altice Merger, the Company commenced its restructuring initiatives (the "2016 Restructuring Plan") that are intended to simplify the Company's organizational structure. The 2016 Restructuring Plan resulted in charges of $188,847 associated with the elimination of positions primarily in corporate, administrative and infrastructure functions across the Company and estimated charges of $10,410 associated with facility realignment and other costs. Other Expense In connection with the Altice Merger, the Company incurred transaction costs of $19,924 and $17,862 for the period January 1, 2016 through June 20, 2016 and for the year ended December 31, 2015, respectively, which are reflected in restructuring and other expense in the consolidated statements of operations. Subsequent to the Altice Merger, the Company incurred transaction costs of $12,920 .

CVC - DISCONTINUED OPERATIONS

CVC - DISCONTINUED OPERATIONS	12 Months Ended
	Dec. 31, 2018
Cablevision Systems Corporation And Subsidiaries
DISCONTINUED OPERATIONS
DISCONTINUED OPERATIONS	DISCONTINUED OPERATIONS Loss from discontinued operations for the year ended December 31, 2015 amounted to $21,272 ( $12,541 , net of income taxes) and primarily reflects an expense of $21,000 ( $12,380 , net of income taxes) related to the settlement of a legal matter relating to Rainbow Media Holdings LLC, a business whose operations were previously discontinued (see Note 17).

CVC - PROPERTY, PLANT AND EQUIP

CVC - PROPERTY, PLANT AND EQUIPMENT	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
PROPERTY, PLANT AND EQUIPMENT	PROPERTY, PLANT AND EQUIPMENT Costs incurred in the construction of the Company's cable systems, including line extensions to, and upgrade of, the Company's hybrid fiber/coaxial infrastructure and construction of the parallel fiber to the home ("FTTH") infrastructure, are capitalized. This includes initial placement of the feeder cable to connect a customer that had not been previously connected, and headend facilities. These costs consist of materials, subcontractor labor, direct consulting fees, and internal labor and related costs associated with the construction activities. The internal costs that are capitalized consist of salaries and benefits of the Company's employees and the portion of facility costs, including rent, taxes, insurance and utilities, that supports the construction activities. These costs are depreciated over the estimated life of the plant ( 10 to 25 years) and headend facilities ( 5 to 25 years). Costs of operating the plant and the technical facilities, including repairs and maintenance, are expensed as incurred. Installation costs associated with the initial deployment of new customer premise equipment (“CPE”) necessary to provide pay television, broadband or telephony services are also capitalized. These costs include materials, subcontractor labor, internal labor, and other related costs associated with the connection activities. The departmental activities supporting the connection process are tracked through specific metrics, and the portion of departmental costs that is capitalized is determined through a time weighted activity allocation of costs incurred based on time studies used to estimate the average time spent on each activity. These installation costs are amortized over the estimated useful lives of the CPE necessary to provide pay television, broadband or telephony services. The portion of departmental costs related to disconnecting services and removing CPE from a customer, costs related to connecting CPE that has been previously connected to the network and repair and maintenance are expensed as incurred. The estimated useful lives assigned to our property, plant and equipment are reviewed on an annual basis or more frequently if circumstances warrant and such lives are revised to the extent necessary due to changing facts and circumstances. Any changes in estimated useful lives are reflected prospectively. Property, plant and equipment (including equipment under capital leases) consist of the following assets, which are depreciated or amortized on a straight-line basis over the estimated useful lives shown below: December 31, 2018 December 31, 2017 Estimated Useful Lives Customer premise equipment $ 1,354,510 $ 1,093,726 3 to 5 years Headends and related equipment 1,852,105 1,626,293 5 to 25 years Infrastructure 4,595,143 4,003,845 5 to 25 years Equipment and software 1,083,166 918,298 3 to 10 years Construction in progress (including materials and supplies) 215,684 240,496 Furniture and fixtures 57,448 52,545 5 to 8 years Transportation equipment 146,387 138,147 5 to 10 years Buildings and building improvements 411,573 394,421 10 to 40 years Leasehold improvements 109,110 108,071 Term of lease Land 48,426 47,563 9,873,552 8,623,405 Less accumulated depreciation and amortization (4,044,671 ) (2,599,579 ) $ 5,828,881 $ 6,023,826 For the years ended December 31, 2018 , 2017 and 2016 the Company capitalized certain costs aggregating $134,265 , $151,646 and $75,804 , respectively, related to the acquisition and development of internal use software, which are included in the table above. Depreciation expense on property, plant and equipment (including capital leases) for the years ended December 31, 2018 , 2017 and 2016 amounted to $1,508,125 , $1,588,764 and $1,046,896 , respectively. The gross amount of buildings and equipment and related accumulated depreciation recorded under capital leases is presented below: December 31, 2018 2017 Buildings and equipment $ 41,554 $ 48,936 Less accumulated depreciation (10,663 ) (12,972 ) $ 30,891 $ 35,964
Cablevision Systems Corporation And Subsidiaries
Property, Plant and Equipment [Line Items]
PROPERTY, PLANT AND EQUIPMENT	PROPERTY, PLANT AND EQUIPMENT Costs incurred in the construction of the Company's cable systems, including line extensions to, and upgrade of, the Company's hybrid fiber/coaxial infrastructure, initial placement of the feeder cable to connect a customer that had not been previously connected, and headend facilities are capitalized. These costs consist of materials, subcontractor labor, direct consulting fees, and internal labor and related costs associated with the construction activities. The internal costs that are capitalized consist of salaries and benefits of the Company's employees and the portion of facility costs, including rent, taxes, insurance and utilities, that supports the construction activities. These costs are depreciated over the estimated life of the plant ( 10 to 25 years) and headend facilities ( 4 to 25 years). Costs of operating the plant and the technical facilities, including repairs and maintenance, are expensed as incurred. Costs associated with initial customer installations and the additions of network equipment necessary to enable advanced services are also capitalized. Costs capitalized as part of new customer installations include materials, subcontractor costs and internal direct labor costs, including service technicians and internal overhead costs incurred to connect the customer to the plant from the time of installation scheduling through the time service is activated and functioning. The internal direct labor cost capitalized is based on a combination of the actual and estimated time to complete the installation. Overhead capitalized consists mainly of employee benefits, such as payroll taxes and health insurance, directly associated with that portion of the capitalized labor and vehicle operating costs related to capitalizable activities. New connections are amortized over the estimated useful life of 5 years for customer wiring and feeder cable to the home. The portion of departmental costs related to disconnecting services, reconnection of a customer, and repair and maintenance are expensed as incurred. The estimated useful lives assigned to our property, plant and equipment are reviewed on an annual basis or more frequently if circumstances warrant and such lives are revised to the extent necessary due to changing facts and circumstances. Any changes in estimated useful lives are reflected prospectively. Property, plant and equipment (including equipment under capital leases) consist of the following assets, which are depreciated or amortized on a straight-line basis over the estimated useful lives shown below: December 31, 2015 Estimated Useful Lives Customer equipment $ 1,952,336 3 to 5 years Headends and related equipment 2,388,289 4 to 25 years Infrastructure 5,639,226 3 to 25 years Equipment and software 1,577,616 3 to 10 years Construction in progress (including materials and supplies) 87,412 Furniture and fixtures 96,561 5 to 12 years Transportation equipment 210,013 5 to 18 years Buildings and building improvements 322,267 10 to 40 years Leasehold improvements 354,136 Term of lease Land 14,507 12,642,363 Less accumulated depreciation and amortization (9,625,348 ) $ 3,017,015 During the period January 1, 2016 through June 20, 2016 and the year ended December 31, 2015, the Company capitalized certain costs aggregating $58,409 and $144,349 , respectively, related to the acquisition and development of internal use software, which are included in the table above. Depreciation expense on property, plant and equipment (including capital leases) for the period January 1, 2016 through June 20, 2016 and the year ended December 31, 2015 amounted to $404,234 and $857,440 , respectively. At December 31, 2015, the gross amount of equipment and related accumulated amortization recorded under capital leases was as follows: December 31, 2015 Equipment $ 90,099 Less accumulated amortization (28,119 ) $ 61,980

CVC - OPERATING LEASES

CVC - OPERATING LEASES	12 Months Ended
	Dec. 31, 2018
Cablevision Systems Corporation And Subsidiaries
OPERATING LEASES	OPERATING LEASES The Company leases certain office, production, and transmission facilities under terms of leases expiring at various dates through 2035. The leases generally provide for escalating rentals over the term of the lease plus certain real estate taxes and other costs or credits. Costs associated with such operating leases are recognized on a straight-line basis over the initial lease term. The difference between rent expense and rent paid is recorded as deferred rent. In addition, the Company rents space on utility poles for its operations. The Company's pole rental agreements are for varying terms, and management anticipates renewals as they expire. Rent expense, including pole rentals, for the period January 1, 2016 through June 20, 2016 and the year ended December 31, 2015 amounted to $41,573 and $82,704 , respectively. The minimum future annual payments for all operating leases (with initial or remaining terms in excess of one year) during the next five years and thereafter, including pole rentals from January 1, 2017 through December 31, 2021, are as follows: 2017 $ 57,853 2018 52,206 2019 44,908 2020 41,221 2021 38,697 Thereafter 141,063

CVC - INTANGIBLE ASSETS

CVC - INTANGIBLE ASSETS	12 Months Ended
	Dec. 31, 2018
Acquired Finite-Lived Intangible Assets [Line Items]
INTANGIBLE ASSETS	INTANGIBLE ASSETS The following table summarizes information relating to the Company's acquired amortizable intangible assets: As of December 31, 2018 As of December 31, 2017 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Estimated Useful Lives Customer relationships $ 5,970,884 $ (2,162,110 ) $ 3,808,774 $ 5,970,884 $ (1,409,021 ) $ 4,561,863 8 to 18 years Trade names (a) 1,067,083 (701,998 ) 365,085 1,067,083 (588,574 ) 478,509 2 to 5 years Other amortizable intangibles 37,644 (18,679 ) 18,965 37,060 (10,978 ) 26,082 1 to 15 years $ 7,075,611 $ (2,882,787 ) $ 4,192,824 $ 7,075,027 $ (2,008,573 ) $ 5,066,454 (a) On May 23, 2017, Altice Europe announced the adoption of a global brand to replace the Company's brands in the future, reducing the remaining useful lives of these trade name intangibles to three years from the date of the adoption, which reflected one year as an in-use asset and two years as a defensive asset. In December 2017, the Company made a decision to postpone the adoption of a global brand that would have replaced the Optimum brand, increasing the useful life of the Optimum trade name intangible asset to 5 years . Amortization expense for the years ended December 31, 2018 , 2017 and 2016 aggregated $874,214 , $1,341,807 and $653,410 , respectively. The following table sets forth the estimated amortization expense on intangible assets for the periods presented: Estimated amortization expense Year Ending December 31, 2019 $ 778,922 Year Ending December 31, 2020 697,316 Year Ending December 31, 2021 617,794 Year Ending December 31, 2022 532,998 Year Ending December 31, 2023 371,198 The carrying amount of goodwill is presented below: Goodwill as of January 1, 2016 $ 2,040,402 Goodwill recorded in connection with Cablevision Acquisition 5,838,959 Adjustments to purchase accounting relating to Cequel Acquisition 113,339 Goodwill as of December 31, 2016 7,992,700 Goodwill recorded in connection with acquisitions in the first and fourth quarter of 2017 23,948 Adjustments to purchase accounting relating to Cablevision Acquisition 3,213 Goodwill as of December 31, 2017 8,019,861 Reclassification of goodwill to property, plant and equipment related to Cequel (15,041 ) Goodwill recorded in connection with an acquisition during the third quarter of 2018 7,608 Adjustment to purchase accounting relating to business acquired in fourth quarter of 2017 (12 ) Goodwill as of December 31, 2018 $ 8,012,416
Cablevision Systems Corporation And Subsidiaries
Acquired Finite-Lived Intangible Assets [Line Items]
INTANGIBLE ASSETS	INTANGIBLE ASSETS The following table summarizes information relating to the Company's acquired intangible assets: December 31, 2015 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Estimated Useful Lives Customer relationships $ 39,414 $ (27,778 ) $ 11,636 10 to 18 years Trade names — — — Other amortizable intangibles 57,847 (32,532 ) 25,315 3 to 28 years $ 97,261 $ (60,310 ) $ 36,951 Amortization expense for the period January 1, 2016 through June 20, 2016 and the year ended December 31, 2015 amounted to $10,316 and $7,812 , respectively. The following table summarizes information relating to the Company's acquired indefinite-lived intangible assets: December 31, 2015 Cable television franchises $ 731,848 Trademarks and other assets 7,250 Goodwill 262,345 Total $ 1,001,443 The carrying amount of goodwill is presented below: Gross goodwill as of December 31, 2015 (Predecessor) $ 596,403 Accumulated impairment losses (334,058 ) Net goodwill as of June 20, 2016 $ 262,345 Impairment Charges Goodwill and indefinite-lived intangible assets are tested annually for impairment or earlier upon the occurrence of certain events or substantive changes in circumstances. No goodwill impairments were recorded for the period January 1, 2016 through June 20, 2016 and for the year ended December 31, 2015, respectively.

CVC - DEBT

CVC - DEBT	12 Months Ended
	Dec. 31, 2018
Debt Instrument [Line Items]
DEBT	DEBT Credit Silo Combination In October 2018, the Company combined its Suddenlink and Optimum businesses under a single credit silo (the “Combination”). The integration of the Suddenlink and Optimum businesses was aimed at aligning Altice USA’s debt capital structure and to simplify Altice USA’s financing strategy and financial reporting requirements. The Combination was effected mainly by the following transactions: • In October 2018, Altice US Finance, Cequel Capital Corporation and Cequel Communications Holdings I, LLC (“CCHI”) commenced an offer to exchange (the "Exchange Offer") any and all outstanding senior notes and senior secured notes issued by them (the "Original Cequel Notes") for up to $5,520,000 aggregate principal amount of new notes (the "New Cequel Notes") and, in the case of the 5.375% secured notes due 2023 and 5.500% secured notes due 2026, and cash of $6,500 . The Exchange Offer was accompanied by a consent solicitation to amend the terms of each series of the notes subject to the Exchange Offer (except the 5.125% Senior Notes due 2021) and the indentures governing such notes. Approximately $5,500,050 of the outstanding notes subject to the Exchange Offer were exchanged into corresponding series of New Cequel Notes. The proposed amendments in the consent solicitation, which have become operative effective November 27, 2018 (the “Combination Date”), eliminated or waived substantially all of the restrictive covenants, eliminated certain events of default, and modified or eliminated certain other provisions governing the Original Cequel Notes (except the 5.125% Senior Notes due 2021) to the extent that they remain outstanding. • In October 2018, CSC Holdings entered into a Sixth Amendment to the CSC Credit Facilities Agreement (the “Combination Incremental Term Loan Agreement”). The Combination Incremental Term Loan Agreement provided for, among other things, new incremental term loan commitments in an aggregate principal amount of $1,275,000 . On or following the Combination Date the following transactions were completed: • The Company redeemed $5,206 principal amount of the Original Cequel Notes that were outstanding after the consummation of the Exchange Offer. • New Cequel Notes with an aggregate principal balance of $5,500,050 were converted into $5,499,156 principal amount of CSC Holdings senior note (see detail below). • Pursuant to the Combination Incremental Term Loan Agreement, on the Combination Date, CSC Holdings entered into a $1,275,000 7 -year incremental term loan maturing January 2026 (the “Incremental Term Loan B-3”). The proceeds from the Incremental Term Loan B-3 were used to repay the entire principal amount of loans under Cequel’s existing Term Loan Facility and other transaction costs related to the Combination. The Incremental Term Loan B-3 has a margin of 2.25% over LIBOR and was issued with an original issue discount of 25 basis points. The Company is required to make scheduled quarterly payments equal to 0.25% (or $3,188 ) of the principal amount of the Incremental Term Loan B-3, beginning with the fiscal quarter ended June 30, 2019, with the remaining balance scheduled to be paid on January 15, 2026. • The Combination was implemented by a series of corporate transactions, including: (i) CCHI merging into Cablevision, with Cablevision as the surviving entity (the “Holdco Merger”), and (ii) Cequel Communications Holdings II, LLC (the direct parent of Cequel) merging into CSC Holdings, with CSC Holdings as the surviving entity. In connection with the Holdco Merger, Cablevision assumed all of the obligations of CCHI that remained outstanding after giving effect to the Combination Exchange under the indentures governing the outstanding Original Cequel Notes. The following is a summary of the results of the Exchange Offer: Original Cequel Notes Remaining Original Cequel Notes Notes Redeemed in Cash Principal of New CSC Holdings Notes 5.375% Senior Secured Notes due 2023 $ 1,100,000 $ — $ 4,157 $ 1,095,825 5.5% Senior Secured Notes due 2026 1,500,000 — 1,049 1,498,806 5.125% Senior Notes due 2021 1,250,000 8,886 — 1,240,762 7.75% Senior Notes due 2025 620,000 1,740 — 617,881 7.5% Senior Notes due 2028 1,050,000 4,118 — 1,045,882 $ 5,520,000 $ 14,744 $ 5,206 $ 5,499,156 CSC Holdings Credit Facilities In connection with the Cablevision Acquisition, in October 2015, Finco, 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 provides U.S. dollar term loans currently in an aggregate principal amount of $3,000,000 ( $2,955,000 outstanding at December 31, 2018 ) (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 $2,300,000 (the “CSC Revolving Credit Facility” and, together with the 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 and October 15, 2018, respectively, and as further amended, restated, supplemented or otherwise modified from time to time, the “CSC Credit Facilities Agreement”). CSC Holdings and those of its subsidiaries which conduct our broadband, pay television and telephony services operations, as well as Lightpath, which provides Ethernet-based data, Internet, voice and video transport and managed services to the business market, comprise the "Restricted Group" as they are subject to the covenants and restrictions of the credit facility and indentures governing the notes and debentures issued by CSC Holdings. In addition, the Restricted Group is also subject to the covenants of the debt issued by Cablevision. Borrowings under the CSC Revolving Credit Facility are comprised of eurodollar borrowings or alternate base rate borrowings, and bear interest at a rate per annum equal to the adjusted LIBO 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. The amendment to the CSC Credit Facilities Agreement entered into on September 9, 2016, extended the maturity date of the CSC Term Loan Facility to October 11, 2024. In October 2016, CSC Holdings used the net proceeds from the sale of $1,310,000 aggregate principal amount of 5.5% senior guaranteed notes due 2027 (the ‘‘2027 Guaranteed Notes’’) (after the deduction of fees and expenses) to prepay outstanding loans under the CSC Holdings Term Credit Facility that were not extended pursuant to this amendment. In connection with the prepayment of the Term Credit Facility, the Company wrote-off the deferred financing costs and the unamortized discount related to the existing term loan aggregating $102,894 . Additionally, the Company recorded deferred financing costs and an original issue discount of $7,249 and $6,250 , respectively, which were subsequently written-off in connection with the Extension Amendment discussed below. The amendment to the CSC Credit Facilities Agreement entered into on March 15, 2017 (“Extension Amendment”) increased the Term Loan by $500,000 to $3,000,000 and the maturity date for this facility was extended to July 17, 2025. The closing of the Extension Amendment occurred in April 2017 and the proceeds were used to refinance the entire $2,493,750 principal amount of existing Term Loans and redeem $500,000 of the 8.625% Senior Notes due September 2017 issued by Cablevision. In connection with the Extension Amendment and the redemption of the senior notes, the Company recorded a loss on extinguishment of debt and write-off of deferred financing costs aggregating $18,976 . The Term Loan is comprised of eurodollar borrowings or alternate base rate borrowings, and bears interest at a rate per annum equal to the adjusted LIBO 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, 1.25% per annum and (ii) with respect to any eurodollar loan, 2.25% per annum. The Company is required to make scheduled quarterly payments equal to 0.25% (or $7,500 ) of the principal amount of the Term Loan, beginning with the fiscal quarter ended September 30, 2017, with the remaining balance scheduled to be paid on July 17, 2025. The Company recorded deferred financing costs and an original issue discount of $4,390 and $15,000 , respectively, which are both being amortized to interest expense over the term of the Term Loan. In January 2018, CSC Holdings entered into a new $1,500,000 incremental term loan facility (the "Incremental Term Loan B-2") under its existing credit facilities agreement. The Incremental Term Loan B-2 was priced at 99.5% and will mature on January 25, 2026. The Incremental Term Loan B-2 is comprised of eurodollar borrowings or alternate base rate borrowings, and bears interest at a rate per annum equal to the adjusted LIBO 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, 1.50% per annum and (ii) with respect to any eurodollar loan, 2.50% per annum. The Company is required to make scheduled quarterly payments equal to 0.25% (or $3,750 ) of the principal amount of the Incremental Term Loan B-2, beginning with the fiscal quarter ended September 30, 2018, with the remaining balance scheduled to be paid on January 26, 2026. See discussion above under "Credit Silo Combination" regarding the Sixth Amendment to the CSC Credit Facilities Agreement, which provided for, among other things, new incremental term loan commitments in an aggregate principal amount of $1,275,000 . The CSC Credit Facilities Agreement requires the prepayment of outstanding CSC Term Loans, subject to certain exceptions and deductions, with (i) 100% of the net cash proceeds of certain asset sales, subject to reinvestment rights and certain other exceptions; and (ii) commencing with the fiscal year ending December 31, 2017, a pari ratable share (based on the outstanding principal amount of the Term Loans divided by the sum of the outstanding principal amount of all pari passu indebtedness and the Term Loans) of 50% of annual excess cash flow, which will be reduced to 0% if the consolidated net senior secured leverage ratio of CSC Holdings is less than or equal to 4.5 to 1. The obligations under the CSC Credit Facilities are guaranteed by each restricted subsidiary of CSC Holdings (other than CSC TKR, LLC and its subsidiaries and certain excluded subsidiaries) (the “Initial Guarantors”) and, subject to certain limitations, will be guaranteed by each future material wholly-owned restricted subsidiary of CSC Holdings. The obligations under the CSC Credit Facilities (including any guarantees thereof) are secured on a first priority basis, subject to any liens permitted by the Credit Facilities, by capital stock held by CSC Holdings or any guarantor in certain subsidiaries of CSC Holdings, subject to certain exclusions and limitations. The CSC Credit Facilities Agreement includes certain negative covenants which, among other things and subject to certain significant exceptions and qualifications, limit CSC Holdings' ability and the ability of its restricted subsidiaries to: (i) incur or guarantee additional indebtedness, (ii) make investments, (iii) create liens, (iv) sell assets and subsidiary stock, (v) pay dividends or make other distributions or repurchase or redeem our capital stock or subordinated debt, (vi) engage in certain transactions with affiliates, (vii) enter into agreements that restrict the payment of dividends by subsidiaries or the repayment of intercompany loans and advances; and (viii) engage in mergers or consolidations. In addition, the CSC Revolving Credit Facility includes a financial maintenance covenant solely for the benefit of the lenders under the CSC Revolving Credit Facility consisting of a maximum consolidated net senior secured leverage ratio of CSC Holdings and its restricted subsidiaries of 5.0 to 1.0. The financial covenant will be tested on the last day of any fiscal quarter, but only if on such day there are outstanding borrowings under the CSC Revolving Credit Facility (including swingline loans but excluding any cash collateralized letters of credit and undrawn letters of credit not to exceed $15,000 ). The CSC Credit Facilities Agreement also 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 CSC Credit Facilities will be entitled to take various actions, including the acceleration of amounts due under the CSC Credit Facilities and all actions permitted to be taken by a secured creditor. CSC Holdings was in compliance with all of its financial covenants under the CSC Credit Facilities as of December 31, 2018 . Cequel Credit Facilities In October 2018, in connection with the Combination described above, amounts outstanding pursuant to the Cequel Credit Facilities, defined below, aggregating $1,249,188 were repaid from the proceeds of the CSC Holdings Senior Secured Term Loan B and all commitments pursuant to the Cequel Credit Facilities were cancelled. Prior to the Combination, an indirect wholly-owned subsidiary of Cequel had entered into a senior secured credit facility which provided term loans in an aggregate principal amount of $1,265,000 (the “Cequel Term Loan Facility”) and revolving loan commitments in an aggregate principal amount of $350,000 (the “Cequel Revolving Credit Facility” and, together with the Cequel Term Loan Facility, the “Cequel Credit Facilities”). The Company was required to make scheduled quarterly payments equal to 0.25% (or $3,163 ) of the principal amount of the outstanding Cequel term loan, beginning with the fiscal quarter ended September 30, 2017, with the remaining balance scheduled to be paid on July 28, 2025. In April 2017, Cequel used proceeds from the term loan facility to refinance the entire $812,963 principal amount of loans under the then outstanding term loan and redeem $450,000 of the 6.375% Senior Notes due September 15, 2020. In connection with the redemption of the senior notes, the Company recorded a loss on extinguishment of debt and write-off of deferred financing costs aggregating $28,684 . Loans comprising each eurodollar borrowing or alternate base rate borrowing, as applicable, bore interest at a rate per annum equal to the adjusted LIBO rate or the alternate base rate, as applicable, plus the applicable margin, where the applicable margin was: • in respect of the Cequel term loans, (i) with respect to any alternate base rate loan, 1.25% per annum and (ii) with respect to any eurodollar loan, 2.25% per annum, and • in respect of Cequel Revolving Credit Facility loans (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. The following table provides details of the Company's outstanding credit facility debt: Interest Rate at December 31, 2018 December 31, 2018 December 31, 2017 Maturity Date Principal Amount Carrying Amount (a) Principal Amount Carrying Amount (a) CSC Holdings Restricted Group: Revolving Credit Facility (b) $20,000 on October 9, 2020, remaining balance on November 30, 2021 (d) 5.71% $ 250,000 $ 231,425 $ 450,000 $ 425,488 Term Loan B July 17, 2025 4.71% 2,955,000 2,939,425 2,985,000 2,967,818 Incremental Term Loan B-2 January 25, 2026 4.96% 1,492,500 1,475,778 — — Incremental Term Loan B-3 (c) January 15, 2026 4.75% 1,275,000 1,268,931 — — Cequel: Term Loan Facility (c) — — 1,258,675 1,250,217 $ 5,972,500 5,915,559 $ 4,693,675 4,643,523 Less: Current portion 54,563 42,650 Long-term debt $ 5,860,996 $ 4,600,873 (a) The carrying amount is net of the unamortized deferred financing costs and/or discounts/premiums. (b) At December 31, 2018 , $147,564 of the revolving credit facility was restricted for certain letters of credit issued on behalf of the Company and $1,902,436 of the facility was undrawn and available, subject to covenant limitations. (c) Proceeds from the CSC Holdings term loan were used to repay outstanding amount under the Cequel Term loan in October 2018 in connection with the Combination. See discussion above. (d) See Note 21 for a discussion of the Company's refinancing of the Revolving Credit Facility. Senior Guaranteed Notes, Senior Secured Notes, and Senior Notes and Debentures The following table summarizes the Company's senior guaranteed notes, senior secured notes and senior notes and debentures: Interest Rate December 31, 2018 December 31, 2017 Date Issued Maturity Date Principal Amount Carrying Amount (a) Principal Amount Carrying Amount (a) CSC Holdings Senior Notes: February 6, 1998 February 15, 2018 7.875 % $ — $ — $ 300,000 $ 301,184 July 21, 1998 July 15, 2018 7.625 % (e) — — 500,000 507,744 February 12, 2009 February 15, 2019 8.625 % (h) 526,000 527,749 526,000 541,165 November 15, 2011 November 15, 2021 6.750 % 1,000,000 969,285 1,000,000 960,146 May 23, 2014 June 1, 2024 5.250 % 750,000 671,829 750,000 660,601 October 9, 2015 January 15, 2023 10.125 % (h) 1,800,000 1,781,424 1,800,000 1,777,914 October 9, 2015 October 15, 2025 10.875 % 1,684,221 1,663,027 1,684,221 1,661,135 November 27, 2018 December 15, 2021 5.125 % (g) 1,240,762 1,155,264 — — November 27, 2018 July 15, 2025 7.750 % (g) 617,881 603,889 — — November 27, 2018 April 1, 2028 7.500 % (g) 1,045,882 1,044,143 — — CSC Holdings Senior Guaranteed Notes: October 9, 2015 October 15, 2025 6.625 % 1,000,000 988,052 1,000,000 986,717 September 23, 2016 April 15, 2027 5.500 % 1,310,000 1,304,936 1,310,000 1,304,468 January 29, 2018 February 1, 2028 5.375 % 1,000,000 992,064 — — November 27, 2018 July 15, 2023 5.375 % (g) 1,095,825 1,078,428 — — November 27, 2018 May 15, 2026 5.500 % (g) 1,498,806 1,484,278 — — Cablevision Senior Notes (b): April 15, 2010 April 15, 2018 7.750 % (d) — — 750,000 754,035 April 15, 2010 April 15, 2020 8.000 % 500,000 495,302 500,000 492,009 September 27, 2012 September 15, 2022 5.875 % 649,024 585,817 649,024 572,071 May 16, 2013 Sept. 9, 2014 December 15, 2021 5.125 % (f) 8,886 8,274 — — June 12, 2015 July 15, 2025 7.750 % (f) 1,740 1,690 — — April 5, 2018 April 1, 2028 7.500 % (f) 4,118 4,110 — — Cequel and Cequel Capital Senior Notes: October 25, 2012 September 15, 2020 6.375 % (c) — — 1,050,000 1,027,493 May 16, 2013 Sept. 9, 2014 December 15, 2021 5.125 % (g) — — 1,250,000 1,138,870 June 12, 2015 July 15, 2025 7.750 % (g) — — 620,000 604,374 Altice US Finance I Corporation Senior Secured Notes: June 12, 2015 July 15, 2023 5.375 % (g) — — 1,100,000 1,082,482 April 26, 2016 May 15, 2026 5.500 % (g) — — 1,500,000 1,488,024 $ 15,733,145 15,359,561 16,289,245 15,860,432 Less: current portion — 507,744 Long-term debt $ 15,359,561 $ 15,352,688 (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 Cequel and Cablevision acquisitions. (b) The issuers of these notes have no ability to service interest or principal on the notes, other than through any dividends or distributions received from CSC Holdings. CSC Holdings is restricted, in certain circumstances, from paying dividends or distributions to the issuers by the terms of the CSC Holdings credit facilities agreement. (c) These notes were repaid in April 2018 with the proceeds from the issuance of new senior notes. (d) These notes were repaid in February 2018 with the proceeds from the 2028 Guaranteed Notes (defined below) and with the proceeds from the Incremental Term Loan. (e) These notes were repaid in July 2018 with borrowings under CSC Holdings revolving credit facility agreement. (f) In connection with the Combination discussed above, Cablevision assumed all of the obligations of the Cequel Senior Notes that were not exchanged. (g) Issued or exchanged for new notes in connection with the Combination discussed above or new notes in connection with the Combination discussed above. (h) These notes were repaid subsequent to December 31, 2018 (see Note 21 for further details). In connection with this refinancing, $526,000 of short-term senior notes were reclassified to long-term debt along with the associated unamortized fair value adjustment. The Company may redeem some or more of all the notes at the redemption price set forth in the relevant indenture, plus accrued and unpaid interest. The indentures under which the senior notes and debentures were issued contain various covenants. The Company was in compliance with all of its financial covenants under these indentures as of December 31, 2018 . O n April 26, 2016, Altice US Finance I Corporation issued $1,500,000 aggregate principal amount of senior secured notes (the ‘‘Cequel 2026 Senior Secured Notes’’). The proceeds from the sale were used to repay the $1,477,200 remaining balance under the previous credit facility and to pay related fees and expenses. The Cequel 2026 Senior Secured Notes mature on May 15, 2026 and bear interest at a rate of 5.50% annually. Interest on the Cequel 2026 Senior Secured Notes is payable semi-annually on May 15 and November 15 of each year, commencing on November 15, 2016. Deferred financing costs recorded in connection with the issuance of these notes amounted to $13,773 and are being amortized over the term of the notes. See discussion above regarding the exchange of these notes as a result of the Combination. In September 2016, CSC Holdings issued $1,310,000 aggregate principal amount of 5.50% senior guaranteed notes due April 15, 2027. The 2027 Guaranteed Notes are senior unsecured obligations and rank pari passu in right of payment with all of the existing and future senior indebtedness, including the existing senior notes and the Credit Facilities and rank senior in right of payment to all of existing and future subordinated indebtedness. As discussed above, in October 2016, CSC Holdings used the proceeds from the issuance of the 2027 Guaranteed Notes (after the deduction of fees and expenses) to prepay the outstanding loans under the CSC Term Credit Facility that were not extended pursuant to the extension amendment on September 9,2016. In connection with the issuance of the 2027 Guaranteed Notes, the Company incurred deferred financing costs of approximately $6,106 , which are being amortized to interest expense over the term of the 2027 Guaranteed Notes. In January 2018, CSC Holdings issued $1,000,000 aggregate principal amount of 5.375% senior guaranteed notes due February 1, 2028 (the "2028 Guaranteed Notes"). The 2028 Guaranteed Notes are senior unsecured obligations and rank pari passu in right of payment with all of the existing and future senior indebtedness, including the existing senior notes and the CSC Credit Facilities and rank senior in right of payment to all of existing and future subordinated indebtedness. The proceeds from the 2028 Guaranteed Notes, together with proceeds from the Incremental Term Loan (discussed above), borrowings under the CSC revolving credit facility and cash on hand, were used in February 2018 to repay $300,000 principal amount of CSC Holdings' senior notes due in February 2018 and $750,000 principal amount of Cablevision senior notes due in April 2018 and a portion was used to fund the dividend of $1,499,935 to the Company's stockholders immediately prior to and in connection with the Distribution discussed in Note 1. In connection with the redemption of Cablevision senior notes, the Company paid a call premium of approximately $7,019 , which was recorded as a loss on extinguishment of debt and also recorded a write-off of the unamortized premium of $2,314 . In April 2018, CCHI and Cequel Capital Corporation each an indirect, wholly owned subsidiary of the Company, issued $1,050,000 aggregate principal amount of 7.50% senior notes due April 1, 2028 (the "2028 Senior Notes"). The proceeds of these notes were used in April 2018 to redeem the $1,050,000 aggregate principal amount 6 3/8% senior notes due September 15, 2020. In connection with the redemption of these notes, the Company paid a call premium of approximately $16,737 , which was recorded as a loss on extinguishment of debt and also recorded a write-off of deferred financing costs aggregating $20,173 . See discussion above regarding the exchange of these notes as a result of the Combination. The indentures under which the Senior Guaranteed Notes and Senior Notes and Debentures were issued contain certain covenants and agreements with respect to investment grade debt securities, including limitations on the ability of CSC Holdings and its restricted subsidiaries to (i) incur or guarantee additional indebtedness, (ii) make investments or other restricted payments, (iii) create liens, (iv) sell assets and subsidiary stock, (v) pay dividends or make other distributions or repurchase or redeem our capital stock or subordinated debt, (vi) engage in certain transactions with affiliates, (vii) enter into agreements that restrict the payment of dividends by subsidiaries or the repayment of intercompany loans and advances, and (viii) engage in mergers or consolidations, in each case subject to certain exceptions. The indentures also contain certain customary events of default. If an event of default occurs, the obligations under the notes may be accelerated. See Note 21 for senior guaranteed notes issued subsequent to December 31, 2018. Notes Payable to Affiliates and Related Parties On June 21, 2016, in connection with the Cablevision Acquisition, the Company issued notes payable to affiliates and related parties aggregating $1,750,000 , of which $875,000 bore interest at 10.75% and matured on December 20, 2023 and $875,000 bore interest at 11% and matured on December 20, 2024. In connection with the Company's IPO in June 2017, the Company converted the notes payable to affiliates and related parties (together with accrued and unpaid interest of $529 and applicable premium of $513,723 ) into shares of the Company’s common stock at the IPO price. The premium was recorded as a loss on extinguishment of debt on the Company's consolidated statement of operations for the year ended December 31, 2017. In connection with the conversion of the notes, the Company recorded a credit to paid in capital of $2,264,252 for the year ended December 31, 2017. For the year ended December 31, 2017 and 2016 the Company recognized interest expense of $90,405 and $102,557 related to these notes prior to their conversion. The following table provides a summary of the loss (gain) on extinguishment of debt and the write-off of deferred financing costs recorded by the Company upon the redemption of senior notes and the refinancing of credit facilities: For the Year Ended December 31, 2018: Cablevision 7.75% Senior Notes due 2018 $ 4,706 Cequel 6.375% Senior Notes due 2020 36,910 Cequel Credit Facility 7,733 Cequel senior and senior secured notes pursuant to the Exchange Offer discussed above (545 ) $ 48,804 For the Year Ended December 31, 2017: Notes payable to affiliates $ 513,723 CSC Holdings Term Loan B 12,675 CSC Holdings 10.875% Senior Notes due 2025 38,858 CSC Holdings 8.625% Senior Notes due 2017 6,300 Cequel Term Loan Facility 2,027 Cequel 6.375% Senior Notes due 2020 26,657 $ 600,240 For the Year Ended December 31, 2016: CSC Holdings Term Loan B $ 102,894 Cequel Term Loan Facility 24,755 $ 127,649 Summary of Debt Maturities The future maturities of debt payable by the Company under its various debt obligations outstanding as of December 31, 2018 , including notes payable, collateralized indebtedness (see Note 12), and capital leases, are as follows: Years Ending December 31, 2019 $ 684,624 2020 589,566 2021 4,002,251 2022 710,920 2023 2,957,403 Thereafter 14,351,818 The amounts in the table above do not include the effects of the debt transactions discussed in Note 21.
Cablevision Systems Corporation And Subsidiaries
Debt Instrument [Line Items]
DEBT	DEBT Restricted Group Credit Facility Prior to the Merger, CSC Holdings and certain of its subsidiaries (the "Restricted Subsidiaries") had a credit agreement (the "Previous Credit Facility") that provided for (1) a revolving credit facility of $1,500,000 , (2) a Term A facility of $958,510 , and (3) a Term B facility of $1,200,000 . Loans under the Previous Credit Facility bore interest as follows: • Revolving credit loans and Term A loans, either (i) the Eurodollar rate (as defined) plus a spread ranging from 1.50% to 2.25% based on the cash flow ratio (as defined), or (ii) the base rate (as defined) plus a spread ranging from 0.50% to 1.25% based on the cash flow ratio; • Term B loans, either (i) the Eurodollar rate plus a spread of 2.50% or (ii) the base rate plus a spread of 1.50% . There was a commitment fee of 0.30% on undrawn amounts under the revolving credit facility in connection with the Previous Credit Facility. Repayment of Restricted Group Credit Facility Debt In April 2015, CSC Holdings made a repayment of $200,000 on its outstanding Term B loan facility with cash on hand. In connection with the repayment, the Company recognized a loss on extinguishment of debt of $731 and wrote-off unamortized deferred financing costs related to this loan facility of $1,004 for the year ended December 31, 2015. On June 21, 2016, in connection with the Merger, the Previous Credit Facility was repaid. Newsday LLC Credit Facility Newsday LLC ("Newsday") had a senior secured credit agreement (the "Newsday Credit Agreement"), which consisted of a $480,000 floating rate term loan. Interest under the Newsday Credit Agreement was calculated, at the election of Newsday, at either the Eurodollar rate or the base rate, plus 3.50% or 2.50% , respectively, as specified in the Newsday Credit Agreement. Borrowings under the Newsday Credit Agreement were guaranteed by CSC Holdings on a senior unsecured basis and certain of its subsidiaries that own interests in Newsday on a senior secured basis. The Newsday Credit Agreement was secured by a lien on the assets of Newsday and Cablevision senior notes with an aggregate principal amount of $611,455 owned by Newsday Holdings. On June 21, 2016, in connection with the Merger, Newsday LLC repaid its outstanding indebtedness under the Newsday Credit Agreement. The following table provides details of the Company's outstanding credit facility debt (net of unamortized financing costs and unamortized discounts): Maturity Interest Rate Principal December 31, 2015 (a) Restricted Group: Term A loan facility (b) April 17, 2018 2.17% $ 886,621 $ 885,105 Term B loan facility (b) April 17, 2020 2.92% 1,159,031 1,150,227 Restricted Group Credit Facilities debt $ 2,035,332 (a) The unamortized discounts and deferred financing costs amounted to $11,200 at December 31, 2015. (b) In connection with the Merger, the Company repaid the then outstanding Term A and Term B loan facilities (see discussion above). Senior Notes and Debentures The following table summarizes the Company's senior notes and debentures as of December 31, 2015: Interest Principal Carrying Issuer Date Issued Maturity Date Rate Amount Amount (c) CSC Holdings (a) February 6, 1998 February 15, 2018 7.875 % $ 300,000 $ 299,091 CSC Holdings (a) July 21, 1998 July 15, 2018 7.625 % 500,000 498,942 CSC Holdings (b) February 12, 2009 February 15, 2019 8.625 % 526,000 511,079 CSC Holdings (b) November 15, 2011 November 15, 2021 6.750 % 1,000,000 985,640 CSC Holdings (b) May 23, 2014 June 1, 2024 5.250 % 750,000 737,500 Cablevision (b) September 23, 2009 September 15, 2017 8.625 % 900,000 891,238 Cablevision (b) April 15, 2010 April 15, 2018 7.750 % 750,000 744,402 Cablevision (b) April 15, 2010 April 15, 2020 8.000 % 500,000 494,410 Cablevision (b) September 27, 2012 September 15, 2022 5.875 % 649,024 638,709 Total $ 5,801,011 (a) The debentures are not redeemable by the Company prior to maturity. (b) The Company may redeem some or all of the notes at any time at a specified "make-whole" price plus accrued and unpaid interest to the redemption date. (c) The carrying amount of the notes is net of the unamortized deferred financing costs and/or discounts/premiums. The table above excludes (i) the principal amount of Cablevision 7.75% senior notes due 2018 of $345,238 and the principal amount of Cablevision 8.00% senior notes due 2020 of $266,217 held by Newsday at December 31, 2015 which are eliminated in the consolidated balance sheets of Cablevision. Debt Transaction Subsequent to Merger In connection with the Merger, in October 2015, Finco borrowed an aggregate principal amount of $3,800,000 under the Term Credit Facility and entered into revolving loan commitments in an aggregate principal amount of $2,000,000 . The Term Credit Facility was to mature on October 9, 2022 and the Revolving Credit Facility was to mature on October 9, 2020 (see discussion below regarding the extension amendments). In addition, on June 21, 2016 and July 21, 2016, the Company entered into incremental loan assumption agreements whereby the Revolving Credit Facility was increased by $70,000 and $35,000 , respectively, to $2,105,000 . Finco also issued $1,800,000 aggregate principal amount of the 2023 Notes, $2,000,000 aggregate principal amount of the 2025 Notes, and $1,000,000 aggregate principal amount of the 2025 Guaranteed Notes. On June 21, 2016, immediately following the Merger, Finco merged with and into CSC Holdings, with CSC Holdings surviving the merger (the "CSC Holdings Merger"), and the Merger Notes and the Credit Facilities became obligations of CSC Holdings. The 2025 Guaranteed Notes are guaranteed on a senior basis by each restricted subsidiary of CSC Holdings (other than CSC TKR, LLC and its subsidiaries, which own and operate the New Jersey cable television systems, Cablevision Lightpath, Inc. and any subsidiaries of CSC Holdings that are "Excluded Subsidiaries" under the indenture governing the 2025 Guaranteed Notes) (such subsidiaries, the "Initial Guarantors") and the obligations under the Credit Facilities are (i) guaranteed on a senior basis by each Initial Guarantor and (ii) secured on a first priority basis by capital stock held by CSC Holdings and the guarantors in certain subsidiaries of CSC Holdings, subject to certain exclusions and limitations. Altice used the proceeds from the Term Credit Facility and the Merger Notes, together with an equity contribution from Altice and its Co-Investors and existing cash at Cablevision, to (a) finance the Merger, (b) refinance the credit agreement, dated as of April 17, 2013 (the "Previous Credit Facility"), among CSC Holdings, certain subsidiaries of CSC Holdings and the lenders party thereto ( $2,030,699 outstanding at Merger Date), (c) repay the senior secured credit agreement, dated as of October 12, 2012, among Newsday LLC, CSC Holdings, and the lenders party thereto (the "Previous Newsday Credit Facility") of $480,000 at Merger Debt, and (d) pay related fees and expenses. The Credit Facilities permit CSC Holdings to request revolving loans, swing line loans or letters of credit from the revolving lenders, swingline lenders or issuing banks, as applicable, thereunder, from time to time prior to October 9, 2020, unless the commitments under the Revolving Credit Facility have been previously terminated. Loans comprising each Eurodollar Borrowing or ABR Borrowing, as applicable, bear interest at a rate per annum equal to the Adjusted LIBO Rate or the Alternate Base Rate, as applicable, plus the Applicable Margin, where the Applicable Margin means: in respect of revolving credit loans with respect to any Eurodollar Loan, 3.25% per annum and (ii) with respect to any ABR Loan, 2.25% per annum. On September 9, 2016, CSC Holdings entered into an amendment (the "Extension Amendment") to the Credit Facilities and the incremental loan assumption agreements dated June 21, 2016 and July 21, 2016 between CSC Holdings and certain lenders party thereto (the "Extending Lenders") pursuant to which each Extending Lender agreed to extend the maturity of its Term Credit Facility under the Credit Facilities to October 11, 2024 and to certain other amendments to the Credit Facilities. In October 2016, CSC Holdings used the net proceeds from the sale of $1,310,000 aggregate principal amount of 5.5% senior guaranteed notes due 2027 (the "2027 Guaranteed Notes") (after the deduction of fees and expenses) to prepay outstanding loans under the Term Credit Facility that were not extended pursuant to the Extension Amendment. The total aggregate principal amount of the Term Credit Facility, after giving effect to the use of proceeds of the 2027 Guaranteed Notes, is $2,500,000 (the "Extended Term Loan"). The Extended Term Loan was effective on October 11, 2016. In connection with the prepayment of the Term Credit Facility, the Company wrote-off the deferred financing costs and the unamortized discount related to the existing term loan aggregating $102,894 . Additionally, the Company recorded deferred financing costs and an original issue discount of $7,249 and $6,250 , respectively, which are both being amortized to interest expense over the term of the Extended Term Loan. On December 9, 2016, the Credit Facilities were amended to increase the availability under the Revolving Credit Facility from $2,105,000 to $2,300,000 and extend the maturity on $2,280,000 of this facility to November 30, 2021. The remaining $20,000 will mature on October 9, 2020. The Credit Facilities require CSC Holdings to prepay outstanding term loans, subject to certain exceptions and deductions, with (i) 100% of the net cash proceeds of certain asset sales, subject to reinvestment rights and certain other exceptions, and (ii) commencing with the first full fiscal year after the consummation of the Merger, a ratable share (based on the outstanding principal amount of the Extended Term Loan divided by the sum of the outstanding principal amount of all pari passu indebtedness and the Extended Term Loan) of 50% of the annual excess cash flow of CSC Holdings and its restricted subsidiaries, which will be reduced to 0% if the Consolidated Net Senior Secured Leverage Ratio of CSC Holdings is less than or equal to 4.5 to 1. Under the Term Credit Facility, CSC Holdings was required to make and made scheduled quarterly payment of $9,500 beginning with the fiscal quarter ending September 30, 2016. Under the Extended Term Loan, CSC Holdings is required to make scheduled quarterly payments equal to 0.25% of the principal amount of the Extended Term Loan, with the remaining balance scheduled to be paid on October 11, 2024, beginning with the fiscal quarter ending March 31, 2017. Interest will be calculated under the Extended Term Loan subject to a "floor" applicable to the Adjusted LIBO Rate of 0.75% per annum, and the Applicable Margin is (1) with respect to any ABR Loan, 2.00% per annum and (2) with respect to any Eurodollar Loan, 3.00% per annum. If the Adjusted LIBO Rate for the Extended Term Loan is less than 0.75% for any given period, the interest rate is fixed at 3.75% per annum. The Credit Facilities include negative covenants that are substantially similar to the negative covenants contained in the indentures under which the Merger Notes were issued (see discussion below). The Credit Facilities include one financial maintenance covenant (solely for the benefit of the Revolving Credit Facility), consisting of a maximum Consolidated Net Senior Secured Leverage Ratio of 5.0 to 1, which will be tested on the last day of any fiscal quarter but only if on such day there are outstanding borrowings under the Revolving Credit Facility (including swingline loans but excluding any cash collateralized letters of credit and undrawn letters of credit not to exceed $15,000 ). The Credit Facilities also contain 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 obligations under the Credit Facilities may be accelerated. Total amounts payable by the Company under its various debt obligations outstanding, including the debt transaction subsequent to the merger discussed above and including notes payable, collateralized indebtedness, and capital leases, during the periods shown below, are as follows: Years Ending December 31, 2017 $ 1,719,180 2018 2,103,441 2019 557,348 2020 526,340 2021 1,200,256 Thereafter 9,884,024

CVC - DERIVATIVE CONTRACTS AND

CVC - DERIVATIVE CONTRACTS AND COLLATERALIZED INDEBTEDNESS	12 Months Ended
	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
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 were 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 December 31, 2018 , 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 December 31, 2018 . Put/Call Options In the third quarter of 2017, the Company entered into a put-call contract that expired in the third quarter of 2018 whereby the Company sold a put option and purchased a call option with the same strike price. These put-call options were settled as of December 31, 2017 and the Company recorded a loss on investments of $97,410 for the year ended December 31, 2017, which represents the difference between the strike price and the closing price of the underlying shares. 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. The following is a summary of interest rate swap contracts outstanding at December 31, 2018: Trade Date Maturity Date Notional Amount Company Pays Company Receives May 2016 May 2026 $ 750,000 Six- month LIBOR Fixed rate of 1.665% June 2016 May 2026 750,000 Six- month LIBOR Fixed rate of 1.68% May 2018 April 2019 2,970,000 Three- month LIBOR One- month LIBOR plus 0.226% May 2018 April 2019 1,496,250 Three- month LIBOR One- month LIBOR plus 0.226% April 2018 April 2019 1,255,513 Three- month LIBOR minus 0.225% One- month LIBOR December 2018 January 2022 500,000 Fixed rate of 2.7177% Three-month LIBOR December 2018 January 2022 500,000 Fixed rate of 2.733% Three-month LIBOR December 2018 January 2022 500,000 Fixed rate of 2.722% 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 As of December 31, 2018, 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 December 31, 2018 2017 Asset Derivatives: Prepaid forward contracts Derivative contracts, current $ — $ 52,545 Interest rate swap contracts Derivative contracts, current 1,975 — Prepaid forward contracts Derivative contracts, long-term 109,344 — Interest rate swap contracts Derivative contracts, long-term — — 111,319 52,545 Liability Derivatives: Prepaid forward contracts Liabilities under derivative contracts, short-term — (52,545 ) Interest rate swap contracts Liabilities under derivative contracts, short-term (70 ) — Prepaid forward contracts Liabilities under derivative contracts, long-term — (109,504 ) Interest rate swap contracts Liabilities under derivative contracts, long-term (132,908 ) (77,902 ) $ (132,978 ) $ (239,951 ) The gain (loss) from the Company's derivative contracts related to the Comcast common stock for the years ended December 31, 2018 , 2017 and 2016 of $218,848 , $(138,920) and $(53,696) , respectively, are reflected in gain (loss) on derivative contracts, net in the Company's consolidated statements of operations. For the years ended December 31, 2018 , 2017 and 2016 the Company recorded a gain (loss) on investments of $(261,834) , $237,354 and $141,896 , respectively, primarily representing the net increase (decrease) in the fair values of the investment securities pledged as collateral. For the years ended December 31, 2018 , 2017 and 2016 the Company recorded a gain (loss) on interest rate swap contracts of $(61,697) , $5,482 and $(72,961) respectively. Settlements of Collateralized Indebtedness The following table summarizes the settlement of the Company's collateralized indebtedness relating to Comcast shares that were settled by delivering cash equal to the collateralized loan value, net of the value of the related equity derivative contracts during the years presented: Years Ended December 31, 2018 2017 Number of shares 16,139,868 26,815,368 Collateralized indebtedness settled $ (516,537 ) $ (774,703 ) Derivatives contracts settled 24 (56,356 ) (516,513 ) (831,059 ) Proceeds from new monetization contracts 516,513 838,794 Net cash proceeds $ — $ 7,735 The cash to settle the collateralized indebtedness was obtained from the proceeds of new monetization contracts covering an equivalent number of Comcast shares. The terms of the new contracts allow the Company to retain upside participation in Comcast shares up to each respective contract's upside appreciation limit with downside exposure limited to the respective hedge price. In April 2017, the Company entered into new monetization contracts related to 32,153,118 shares of Comcast common stock held by us, which synthetically reversed the then existing contracts related to these shares (the "Synthetic Monetization Closeout"). As the then existing collateralized debt matured, the Company settled the contracts with proceeds received from the new monetization contracts. The new monetization contracts mature on April 28, 2021. The new monetization contracts provide the Company with downside protection below the hedge price of $35.47 and upside benefit of stock price appreciation up to $44.72 per share. In connection with the execution of these contracts, the Company recorded (i) the fair value of the equity derivative contracts of $53,316 (in a net asset position), (ii) notes payable of $111,657 , representing the fair value of the existing equity derivative contracts, in a liability position, and (iii) a discount on notes payable of $58,341 .
Cablevision Systems Corporation And Subsidiaries
Derivatives, Fair Value [Line Items]
DERIVATIVE CONTRACTS AND COLLATERALIZED INDEBTEDNESS	DERIVATIVE CONTRACTS AND COLLATERALIZED INDEBTEDNESS 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 were 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. The Company monitors the financial institutions that are counterparties to its equity derivative contracts and it diversifies its equity derivative contracts among various counterparties to mitigate exposure to any single financial institution. 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 Asset Derivatives Liability Derivatives Fair Value at December 31, 2015 Prepaid forward contracts Current derivative contracts $ 10,333 $ 2,706 Prepaid forward contracts Long-term derivative contracts 72,075 — $ 82,408 $ 2,706 Unrealized and realized gains (losses) related to Company's equity derivative contracts related to the Comcast common stock for the period January 1, 2016 through June 20, 2016 and the year ended December 31, 2015 of $(36,283) and $104,927 , respectively, are reflected in gain (loss) on equity derivative contracts, net in the Company's consolidated statements of operations. For the period January 1, 2016 through June 20, 2016 and the year ended December 31, 2015 and , the Company recorded a gain (loss) on investments of $129,510 and $(33,935) , respectively, representing the net increase (decrease) in the fair values of all investment securities pledged as collateral. Settlements of Collateralized Indebtedness The following table summarizes the settlement of the Company's collateralized indebtedness relating to Comcast shares that were settled by delivering cash equal to the collateralized loan value, net of the value of the related equity derivative contracts. January 1 to June 20, 2016 Year Ended December 31, 2015 Number of shares (a) 10,802,118 26,815,368 Collateralized indebtedness settled $ (273,519 ) $ (569,562 ) Derivative contracts settled (8,075 ) (69,675 ) (281,594 ) (639,237 ) Proceeds from new monetization contracts 337,149 774,703 Net cash receipt $ 55,555 $ 135,466 ______________________ (a) Share amounts adjusted for the 2 for 1 stock split in February 2017. The cash was obtained from the proceeds of new monetization contracts covering an equivalent number of Comcast shares. The terms of the new contracts allow the Company to retain upside participation in Comcast shares up to each respective contract's upside appreciation limit with downside exposure limited to the respective hedge price.

CVC - FAIR VALUE MEASUREMENT

CVC - FAIR VALUE MEASUREMENT	12 Months Ended
	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
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 for each of these hierarchy levels, the Company's financial assets and financial liabilities that are measured at fair value on a recurring basis: Fair Value Hierarchy December 31, 2018 December 31, 2017 Assets: Money market funds Level I $ 91,852 $ 5,949 Investment securities pledged as collateral Level I 1,462,626 1,720,357 Prepaid forward contracts Level II 109,344 52,545 Interest rate swap contracts Level II 1,975 — Liabilities: Prepaid forward contracts Level II — 162,049 Interest rate swap contracts Level II 132,978 77,902 Contingent consideration related to 2017 and 2018 acquisitions Level III 6,195 32,233 The Company's cash equivalents, investment securities 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. The fair value of the contingent consideration as of December 31, 2018 relating to acquisitions in the third quarter of 2018 and fourth quarter of 2017 amounted to approximately $4,500 and $1,695 , respectively. The estimated amount recorded as of December 31, 2018 is 100% of the contractual amount related to the acquisition in the third quarter 2018 and 42% of the contractual amount related to the acquisition in the fourth quarter 2017. The fair value of the consideration was estimated based on a probability assessment of attaining the targets as of December 31, 2018. 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 and Debentures, Senior Secured Notes, Senior Guaranteed Notes, and Notes Payable 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 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 as follows: December 31, 2018 December 31, 2017 Fair Value Hierarchy Carrying Amount (a) Estimated Fair Value Carrying Amount (a) Estimated Fair Value CSC Holdings debt instruments: Credit facility debt Level II $ 5,915,559 $ 5,972,500 $ 3,393,306 $ 3,435,000 Collateralized indebtedness Level II 1,406,182 1,374,203 1,349,474 1,305,932 Senior guaranteed notes Level II 5,847,758 5,646,468 2,291,185 2,420,000 Senior notes and debentures Level II 8,416,610 8,972,722 6,409,889 7,221,846 Notes payable Level II 64,212 63,940 56,956 55,289 Cablevision debt instruments: Senior notes and debentures Level II 1,095,193 1,163,843 1,818,115 1,931,239 Cequel debt instruments: — — Cequel credit facility Level II — — 1,250,217 1,258,675 Senior secured notes Level II — — 2,570,506 2,658,930 Senior notes Level II — — 2,770,737 2,983,615 Notes payable Level II 41,896 41,896 8,946 8,946 $ 22,787,410 $ 23,235,572 $ 21,919,331 $ 23,279,472 (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.
Cablevision Systems Corporation And Subsidiaries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
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 for each of these hierarchy levels, the Company's financial assets and financial liabilities that are measured at fair value on a recurring basis: At December 31, 2015 Level I Level II Level III Total Assets: Money market funds $ 922,765 $ — $ — $ 922,765 Investment securities 130 — — 130 Investment securities pledged as collateral 1,211,982 — — 1,211,982 Prepaid forward contracts — 82,408 — 82,408 Liabilities: Prepaid forward contracts — 2,706 — 2,706 The Company's cash equivalents, investment securities 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 prepaid forward contracts reflected as derivative contracts and liabilities under derivative contracts on the Company's 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. In addition, see Note 9 for a discussion of impairment charges related to nonfinancial assets not measured at fair value on a recurring basis. 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 and Debentures, Senior Guaranteed Notes and Notes Payable 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 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 as follows: December 31, 2015 Fair Value Hierarchy Carrying Amount Estimated Fair Value Debt instruments: Credit facility debt Level II $ 2,514,454 $ 2,525,654 Collateralized indebtedness Level II 1,191,324 1,176,396 Senior notes and debentures Level II 5,801,011 5,756,608 Notes payable Level II 14,544 14,483 Total debt instruments $ 9,521,333 $ 9,473,141 The fair value estimates related to the Company's debt instruments and senior notes receivable 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.

CVC - INCOME TAXES

CVC - INCOME TAXES	12 Months Ended
	Dec. 31, 2018
INCOME TAXES	INCOME TAXES The Company files a federal consolidated and certain state combined income tax returns with its 80% or more owned subsidiaries. Income tax benefit attributable to the Company's operations for the years ended December 31, 2018 , 2017 and 2016 consist of the following components: Years Ended December 31, 2018 2017 2016 Current expense (benefit): Federal $ (1,865 ) $ 5,261 $ (981 ) State 32,347 12,530 5,310 30,482 17,791 4,329 Deferred benefit: Federal 26,141 (2,095,930 ) (223,159 ) State (93,744 ) (784,224 ) (40,830 ) (67,603 ) (2,880,154 ) (263,989 ) Tax expense (benefit) relating to uncertain tax positions (1,534 ) 11 (6 ) Income tax benefit $ (38,655 ) $ (2,862,352 ) $ (259,666 ) The income tax benefit attributable to the Company's operations differs from the amount derived by applying the statutory federal rate to pretax loss principally due to the effect of the following items: Years Ended December 31, 2018 2017 2016 Federal tax benefit at statutory rate $ (3,793 ) $ (478,656 ) $ (381,901 ) State income taxes, net of federal impact (8,103 ) (61,698 ) (39,336 ) Changes in the valuation allowance 15,987 (111 ) 297 Impact of Federal Tax Reform — (2,332,677 ) — Changes in the state rates used to measure deferred taxes, net of federal impact (52,915 ) (12,896 ) 153,239 Tax benefit relating to uncertain tax positions (514 ) (253 ) (120 ) Non-deductible share-based compensation related to the carried unit plan 8,677 20,101 5,029 Non-deductible Cablevision Acquisition transaction costs — — 4,457 Other non-deductible expenses 2,200 3,405 1,551 Other, net (194 ) 433 (2,882 ) Income tax benefit $ (38,655 ) $ (2,862,352 ) $ (259,666 ) In late 2017, the United States enacted the Tax Cuts and Jobs Act of 2017 (the “Tax Reform”) which significantly changed the existing U.S. tax law by implementing a reduction in the corporate tax rate to 21%, moving from a worldwide tax system to a territorial system and imposing new or additional limitations on the deductibility of interest expense and executive compensation. Given the significance of the legislation, the SEC issued Staff Accounting Bulletin No. 118 ("SAB 118"), which allowed registrants to record provisional amounts during a one year “measurement period” similar to that used when accounting for business combinations. The Company applied the guidance in SAB 118 when accounting for the enactment-date effects of the Tax Reform in 2017 and throughout 2018. For the year ended December 31, 2017, the Company recognized a non-cash deferred tax benefit of $2,332,677 resulting primarily from a decrease in the deferred tax liabilities with regard to fixed assets and intangibles, partially offset by a decrease in the deferred tax asset for the federal net operating loss carry forward (‘‘NOL’’). At December 31, 2018, the Company completed its accounting of SAB 118 for all of the enactment-date income tax effects of the Tax Reform. The Company has not made any measurement-period adjustments and there were no additional material adjustments related to the Tax Reform. During 2018, the Company determined that it met the definition of a Qualified Technology Company for New York State tax purposes and thereby was eligible for the reduced tax rate. Additionally, during 2018, the state of New Jersey enacted significant tax law changes imposing a 2.5% surtax for tax years beginning January 1, 2018 and mandating combined return filing requirements for unitary corporations for tax years beginning January 1, 2019. Accordingly, the Company recorded a net non-cash deferred tax benefit of $52,915 based on a remeasurement of the net deferred tax liability. The tax effects of temporary differences which give rise to significant portions of deferred tax assets or liabilities and the corresponding valuation allowance are as follows: December 31, 2018 2017 Noncurrent NOLs and tax credit carry forwards $ 571,413 $ 785,809 Compensation and benefit plans 42,484 49,698 Partnership investments 60,413 68,054 Restructuring liability 9,364 33,247 Other liabilities 38,473 40,149 Liabilities under derivative contracts 20,846 21,034 Interest deferred for tax purposes 166,668 128,516 Other 11,531 8,849 Deferred tax asset 921,192 1,135,356 Valuation allowance (25,400 ) (3,000 ) Net deferred tax asset, noncurrent 895,792 1,132,356 Fixed assets and intangibles (5,496,103 ) (5,729,274 ) Investments (71,167 ) (113,628 ) Prepaid expenses (7,543 ) (8,105 ) Fair value adjustments related to debt and deferred financing costs (40,083 ) (40,215 ) Other (4,833 ) (10,420 ) Deferred tax liability, noncurrent (5,619,729 ) (5,901,642 ) Total net deferred tax liability $ (4,723,937 ) $ (4,769,286 ) As of December 31, 2018 , the Company's federal NOLs were approximately $1,915,759 . The utilization of certain pre-merger NOLs of Cablevision and Cequel are limited pursuant to Internal Revenue Code Section 382. The Company does not expect such limitations to impact the ability to utilize the NOLs prior to their expiration. As of December 31, 2018 , the Company has $24,126 of alternative minimum tax credits which do not expire and $17,806 of research credits, expiring in varying amounts from 2023 through 2035. Pursuant to the Tax Reform elimination of the AMT liability, the Company has submitted a refund request for 50% of the prior year’s AMT, which reflects the portion not covered by the effects of the budget sequestration. Deferred tax assets have resulted primarily from the Company's future deductible temporary differences and NOLs. In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax asset will not be realized. In evaluating the need for a valuation allowance, management takes into account various factors, including the expected level of future taxable income, available tax planning strategies and reversals of existing taxable temporary differences. If such estimates and related assumptions change in the future, the Company may be required to record additional valuation allowances against its deferred tax assets, resulting in additional income tax expense in the Company's consolidated statements of operations. Management evaluates the realizability of the deferred tax assets and the need for additional valuation allowances quarterly. Pursuant to the Cablevision Acquisition and Cequel Acquisition, deferred tax liabilities resulting from the book fair value adjustment increased significantly and future taxable income that will result from the reversal of existing taxable temporary differences for which deferred tax liabilities are recognized is sufficient to conclude it is more likely than not that the Company will realize all of its gross deferred tax assets, except those deferred tax assets against which a valuation allowance has been recorded which relate to certain state NOLs. In the normal course of business, the Company engages in transactions in which the income tax consequences may be uncertain. The Company's income tax returns are filed based on interpretation of tax laws and regulations. Such income tax returns are subject to examination by taxing authorities. For financial statement purposes, the Company only recognizes tax positions that it believes are more likely than not of being sustained. There is considerable judgment involved in determining whether positions taken or expected to be taken on the tax return are more likely than not of being sustained. A reconciliation of the beginning and ending amount of unrecognized tax benefits associated with uncertain tax positions, excluding associated deferred tax benefits and accrued interest, is as follows: Balance at December 31, 2016 $ 4,025 Increases related to prior year tax positions 11 Balance at December 31, 2017 4,036 Decreases related to prior year tax positions (1,456 ) Balance at December 31, 2018 $ 2,580 As of December 31, 2018 , if all uncertain tax positions were sustained at the amounts reported or expected to be reported in the Company's tax returns, the elimination of the Company's unrecognized tax benefits, net of the deferred tax impact, would decrease income tax expense by $2,104 . In the second quarter of 2016, the Company changed its accounting policy on a prospective basis to present interest expense relating to uncertain tax positions as additional interest expense. For the year ended December 31, 2018 , a net benefit of $2,123 of interest expense relating to reversal of uncertain tax positions from prior years offset by current interest accrual was recorded to interest expense. The most significant jurisdictions in which the Company is required to file income tax returns include the states of New York, New Jersey, Connecticut, the City of New York, Texas and West Virginia. The State and City of New York are presently auditing income tax returns for years 2012 through 2014. The State of New Jersey is presently auditing income tax returns for years 2014 through 2017. Management does not believe that the resolution of the ongoing income tax examination described above will have a material adverse impact on the financial position of the Company. Changes in the liabilities for uncertain tax positions will be recognized in the interim period in which the positions are effectively settled or there is a change in factual circumstances.
Cablevision Systems Corporation And Subsidiaries
INCOME TAXES	INCOME TAXES Income tax expense attributable to the Company's continuing operations consists of the following components: January 1 to June 20, 2016 Year Ended December 31, 2015 Current expense: Federal $ 6,473 $ 4,844 State 1,917 15,869 8,390 20,713 Deferred (benefit) expense: Federal 93,253 97,927 State 22,897 35,469 116,150 133,396 Tax (benefit) expense relating to uncertain tax positions 308 763 Income tax expense $ 124,848 $ 154,872 Income tax benefit attributable to discontinued operations for the year ended December 31, 2015 of $8,731 is comprised of current and deferred income tax benefit of $111 and $8,620 , respectively. The income tax (benefit) expense attributable to the Company's continuing operations differs from the amount derived by applying the statutory federal rate to pretax income principally due to the effect of the following items: January 1 to June 20, 2016 Year Ended December 31, 2015 Federal tax expense at statutory rate $ 100,926 $ 119,931 State income taxes, net of federal impact 14,825 18,874 Changes in the valuation allowance 86 (902 ) Changes in the state rates used to measure deferred taxes, net of federal impact — (1,006 ) Tax expense (benefit) relating to uncertain tax positions 178 574 New York tax reform — 16,334 Non-deductible officers' compensation 462 846 Non-deductible merger transaction costs 9,392 — Other non-deductible expenses 1,337 3,099 Research credit (850 ) (2,630 ) Adjustment to prior year tax expense — (515 ) Other, net (1,508 ) 267 Income tax expense $ 124,848 $ 154,872 The tax effects of temporary differences which give rise to significant portions of deferred tax assets or liabilities and the corresponding valuation allowance at December 31, 2015 are as follows. Deferred Tax Asset (Liability) Current NOLs and tax credit carry forwards $ 76,007 Compensation and benefit plans 80,831 Allowance for doubtful accounts 2,196 Merger transaction costs 7,332 Inventory 7,135 Other 26,216 Deferred tax asset 199,717 Valuation allowance (2,098 ) Net deferred tax asset, current 197,619 Investments (163,396 ) Prepaid expenses (19,627 ) Deferred tax liability, current (183,023 ) Net deferred tax asset, current $ 14,596 Noncurrent NOLs and tax credit carry forwards 36,866 Compensation and benefit plans 97,005 Partnership investments 123,529 Investments 9,798 Other 9,201 Deferred tax asset 276,399 Valuation allowance (2,816 ) Net deferred tax asset, noncurrent 273,583 Fixed assets and intangibles (978,418 ) Deferred tax liability, noncurrent (978,418 ) Net deferred tax liability, noncurrent (704,835 ) Total net deferred tax liability $ (690,239 ) The Company used the 'with-and-without' approach to determine the recognition and measurement of excess tax benefits. Cash flows resulting from excess tax benefits were classified as cash flows from financing activities. Excess tax benefits are realized tax benefits from tax deductions for options exercised and restricted shares issued in excess of the deferred tax asset attributable to share-based compensation expense for such awards. The Company realized excess tax benefit of $82 and $5,694 for the period January 1, 2016 through June 20, 2016, and for the year ended December 31, 2015, respectively, resulting in an increase to paid-in-capital. Deferred tax assets have resulted primarily from the Company's future deductible temporary differences and NOLs. In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax asset will not be realized. The Company's ability to realize its deferred tax assets depends upon the generation of sufficient future taxable income and tax planning strategies to allow for the utilization of its NOLs and deductible temporary differences. If such estimates and related assumptions change in the future, the Company may be required to record additional valuation allowances against its deferred tax assets, resulting in additional income tax expense in the Company's consolidated statements of income. Management evaluates the realizability of the deferred tax assets and the need for additional valuation allowances quarterly. At this time, based on current facts and circumstances, management believes that it is more likely than not that the Company will realize benefit for its gross deferred tax assets, except those deferred tax assets against which a valuation allowance has been recorded which relate to certain state NOLs. In the normal course of business, the Company engages in transactions in which the income tax consequences may be uncertain. The Company's income tax returns are filed based on interpretation of tax laws and regulations. Such income tax returns are subject to examination by taxing authorities. For financial statement purposes, the Company only recognizes tax positions that it believes are more likely than not of being sustained. There is considerable judgment involved in determining whether positions taken or expected to be taken on the tax return are more likely than not of being sustained. A reconciliation of the beginning and ending amount of unrecognized tax benefits associated with uncertain tax positions, excluding associated deferred tax benefits and accrued interest, is as follows: Balance at December 31, 2015 $ 4,022 Increases related to prior year tax positions 3 Increases related to current year tax positions 6 Balance at June 20, 2016 $ 4,031 In the second quarter of 2016, the Company changed its accounting policy on a prospective basis to present interest expense relating to uncertain tax positions as additional interest expense. During the period ended June 20, 2016 and December 31, 2015, interest expense of $209 and $314 was included in income tax expense, respectively. The most significant jurisdictions in which the Company is required to file income tax returns include the states of New York, New Jersey and Connecticut and the City of New York. The State of New York is presently auditing income tax returns for years 2009 through 2011. Management does not believe that the resolution of the ongoing income tax examination described above will have a material adverse impact on the financial position of the Company. Changes in the liabilities for uncertain tax positions will be recognized in the interim period in which the positions are effectively settled or there is a change in factual circumstances.

CVC - BENEFIT PLANS

CVC - BENEFIT PLANS	12 Months Ended
	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
BENEFIT PLANS	BENEFIT PLANS Qualified and Non-qualified Defined Benefit Plans Retirement Plans (collectively, the "Defined Benefit Plans") The Company sponsors a non-contributory qualified defined benefit cash balance retirement plan (the "Pension Plan") for the benefit of non-union employees of Cablevision, as well as certain employees covered by a collective bargaining agreement in Brooklyn. The Company maintains an unfunded non-contributory non-qualified defined benefit excess cash balance plan ("Excess Cash Balance Plan") covering certain current and former employees of Cablevision who participate in the Pension Plan. The Company also maintained an additional unfunded non-contributory, non-qualified defined benefit plan ("CSC Supplemental Benefit Plan") for the benefit of certain former officers and employees of Cablevision which provided that, upon retiring on or after normal retirement age, a participant receives a benefit equal to a specified percentage of the participant's average compensation, as defined. All participants were 100% vested in the CSC Supplemental Benefit Plan. The benefits related to the CSC Supplemental Plan were paid to participants in January 2017 and the plan was terminated. Cablevision's Pension Plan and the Excess Cash Balance Plan are frozen and no employee of Cablevision who was not already a participant could participate in the plans and no further annual Pay Credits (a certain percentage of employees' eligible pay) are made. Existing account balances under the plans continue to be credited with monthly interest in accordance with the terms of the plans. Plan Results for Defined Benefit Plans Summarized below is the funded status and the amounts recorded on the Company's consolidated balance sheets for all of the Company's Defined Benefit Plans at December 31, 2018 and 2017 : December 31, 2018 2017 Change in projected benefit obligation: Projected benefit obligation at beginning of year $ 299,066 $ 382,517 Interest cost 9,248 11,786 Actuarial loss (gain) (9,894 ) 13,171 Curtailments — 6,332 Settlements 2,373 6,910 Benefits paid (36,278 ) (121,650 ) Projected benefit obligation at end of year 264,515 299,066 Change in plan assets: Fair value of plan assets at beginning of year 195,768 284,118 Actual gain (loss) on plan assets, net (5,705 ) 6,356 Employer contributions 13,725 26,944 Benefits paid (36,278 ) (121,650 ) Fair value of plan assets at end of year 167,510 195,768 Unfunded status at end of year $ (97,005 ) $ (103,298 ) The accumulated benefit obligation for the Company's Defined Benefit Plans aggregated $264,515 and $299,066 at December 31, 2018 and 2017 , respectively. The Company's net funded status relating to its Defined Benefit Plans at December 31, 2018 and 2017 , is as follows: December 31, 2018 2017 Defined Benefit Plans $ (97,005 ) $ (103,298 ) Less: Current portion related to nonqualified plans 211 135 Long-term defined benefit plan obligations $ (96,794 ) $ (103,163 ) Components of the benefit costs, recorded in other income (expense), net, for the Defined Benefit Plans for the years ended December 31, 2018 , 2017 and 2016, is as follows: Years Ended December 31, 2018 2017 2016 Interest cost $ 9,248 $ 11,786 $ 6,946 Expected return on plan assets, net (987 ) (4,905 ) (3,880 ) Curtailment loss — 3,137 231 Settlement loss (income) (reclassified from accumulated other comprehensive loss) (a) 1,268 1,845 (154 ) Non-operating pension costs $ 9,529 $ 11,863 $ 3,143 (a) As a result of benefit payments to terminated or retired individuals exceeding the service and interest costs for the Pension Plan and the Excess Cash Balance Pension Plan during the years ended December 31, 2018 and 2017 and during the period June 21, 2016 through December 31, 2016, the Company recognized non-cash settlement losses that represent the acceleration of the recognition of a portion of the previously unrecognized actuarial losses recorded in accumulated other comprehensive loss on the Company’s consolidated balance sheets relating to these plans. Plan Assumptions for Defined Benefit Plans Weighted-average assumptions used to determine pension costs (made at the beginning of the year) and benefit obligations (made at the end of the year) for the Defined Benefit Plans are as follows: Benefit Costs Benefit Obligations at December 31, For the Year Ended December 31, 2018 For the Year Ended December 31, 2017 For the Period June 21, 2016 to December 31, 2016 2018 2017 Discount rate (a) 3.87 % 3.69 % 3.53 % 4.20 % 3.50 % Rate of increase in future compensation levels — % — % — % — % — % Expected rate of return on plan assets (Pension Plan only) 3.67 % 3.90 % 3.97 % N/A N/A (a) The discount rates of 3.87% 3.69% and 3.53% for the years ended December 31, 2018 and 2017 and for the period June 21, 2016 through December 31, 2016, represents the average of the quarterly discount rates used to remeasure the Company's projected benefit obligation and benefit costs in connection with the recognition of settlement losses discussed above. The discount rate used by the Company in calculating the benefit costs for the Cash Balance Plan and the Excess Cash Balance Plan was determined based on the expected future benefit payments for the plans and from the Willis Towers Watson U.S. Rate Link: 40-90 Discount Rate Model. The model was developed by examining the yields on selected highly rated corporate bonds. The Company's expected long-term return on Pension Plan assets is based on a periodic review and modeling of the plan's asset allocation structure over a long-term horizon. Expectations of returns and risk for each asset class are the most important of the assumptions used in the review and modeling and are based on comprehensive reviews of historical data, forward looking economic outlook, and economic/financial market theory. The expected long-term rate of return was chosen as a best estimate and was determined by (a) historical real returns, net of inflation, for the asset classes covered by the investment policy, and (b) projections of inflation over the long-term period during which benefits are payable to plan participants. Pension Plan Assets and Investment Policy The weighted average asset allocations of the Pension Plan at December 31, 2018 and 2017 were as follows: Plan Assets at December 31, 2018 2017 Asset Class: Mutual funds 29 % 32 % Fixed income securities 65 66 Cash equivalents and other 6 2 100 % 100 % The Pension Plan's investment objectives reflect an overall low risk tolerance to stock market volatility. This strategy allows for the Pension Plan to invest in portfolios that would obtain a rate of return throughout economic cycles, commensurate with the investment risk and cash flow needs of the Pension Plan. The investments held in the Pension Plan are readily marketable and can be sold to fund benefit payment obligations of the plan as they become payable. Investment allocation decisions are formally made by the Company's Benefit Committee, which takes into account investment advice provided by its external investment consultant. The investment consultant takes into account expected long-term risk, return, correlation, and other prudent investment assumptions when recommending asset classes and investment managers to the Company's Benefit Committee. The major categories of the Pension Plan assets are cash equivalents and bonds which are marked-to-market on a daily basis. Due to the Pension Plan's significant holdings in long-term government and non-government fixed income securities, the Pension Plan's assets are subjected to interest rate risk; specifically, a rising interest rate environment. Consequently, an increase in interest rates may cause a decrease to the overall liability of the Pension Plan thus creating a hedge against rising interest rates. In addition, a portion of the Pension Plan's bond portfolio is invested in foreign debt securities where there could be foreign currency risks associated with them, as well as in non-government securities which are subject to credit risk of the bond issuer defaulting on interest and/or principal payments. Investments at Estimated Fair Value The fair values of the assets of the Pension Plan at December 31, 2018 by asset class are as follows: Asset Class Level I Level II Level III Total Mutual funds $ 49,140 $ — $ — $ 49,140 Fixed income securities held in a portfolio: Foreign issued corporate debt — 14,002 — 14,002 U.S. corporate debt — 43,190 — 43,190 Government debt — 3,988 — 3,988 U.S. Treasury securities — 38,657 — 38,657 Asset-backed securities — 8,907 — 8,907 Other — 205 — 205 Cash equivalents (a) 4,343 3,187 — 7,530 Total (b) $ 53,483 $ 112,136 $ — $ 165,619 (a) A significant portion represents an investment in a short-term investment fund that invests primarily in securities of high quality and low risk. (b) Excludes cash and net receivables relating to the sale of securities that were not settled as of December 31, 2018 . The fair values of the assets of the Pension Plan at December 31, 2017 by asset class are as follows: Asset Class Level I Level II Level III Total Mutual funds $ 61,833 $ — $ — $ 61,833 Fixed income securities held in a portfolio: Foreign issued corporate debt — 10,721 — 10,721 U.S. corporate debt — 39,992 — 39,992 Government debt — 4,645 — 4,645 U.S. Treasury securities — 62,601 — 62,601 Asset-backed securities — 10,978 — 10,978 Cash equivalents (a) 6,691 2,782 — 9,473 Total (b) $ 68,524 $ 131,719 $ — $ 200,243 (a) A significant portion represents an investment in a short-term investment fund that invests primarily in securities of high quality and low risk. (b) Excludes cash and net payables relating to the purchase of securities that were not settled as of December 31, 2017 . The fair values of mutual funds and cash equivalents were derived from quoted market prices that the Pension Plan administrator has the ability to access. The fair values of corporate and government debt, treasury securities and asset-back securities were derived from bids received from a vendor or broker not available in an active market that the Pension Plan administrator has the ability to access. Benefit Payments and Contributions for Defined Benefit Plans The following benefit payments are expected to be paid during the periods indicated: 2019 $ 21,137 2020 17,067 2021 17,690 2022 16,837 2023 20,119 2024-2028 93,793 The Company currently expects to contribute approximately $36,000 to the Pension Plan in 2019 . Defined Contribution Plans The Company maintains the Altice USA 401(k) Savings Plan (formerly known as the Cablevision 401(k) Savings Plan), a contributory qualified defined contribution plan for the benefit of non-union employees of Cablevision. Participants can contribute a percentage of eligible annual compensation and the Company will make a matching cash contribution or discretionary contribution, as defined in the plan. In addition, the Company maintains an unfunded non-qualified Excess Savings Plan which was frozen on January 1, 2017 for which the Company provided a matching contribution similar to the Altice USA 401(k) Savings Plan. Applicable employees of the Company were eligible for an enhanced employer matching contribution, as well as a year-end employer discretionary contribution to the Cablevision 401(k) Savings Plan and the Cablevision Excess Savings Plan. Through September 30, 2017, the Company also maintained a 401(k) plan for employees of Cequel. Cequel employees that qualified for participation were able to contribute a percentage of eligible annual compensation and the Company would make a matching cash contribution, as defined in the plan. During the fourth quarter of 2017, the Cequel 401(k) plan assets were transferred to the Cablevision 401(k) Savings Plan and the plan was renamed the Altice USA 401(k) Savings Plan. The cost associated with these plans (including the enhanced employer matching and discretionary contributions in 2016) was $28,232 , $27,577 and $28,501 for the years ended December 31, 2018 , 2017 and 2016 , respectively.
Cablevision Systems Corporation And Subsidiaries
Defined Benefit Plan Disclosure [Line Items]
BENEFIT PLANS	BENEFIT PLANS Qualified and Non-qualified Defined Benefit Plans Cablevision Retirement Plans (collectively, the "Defined Benefit Plans") The Company sponsors a non-contributory qualified defined benefit cash balance retirement plan (the "Pension Plan") for the benefit of non-union employees other than those of Newsday, as well as certain employees covered by a collective bargaining agreement in Brooklyn. The Company maintains an unfunded non-contributory non-qualified defined benefit excess cash balance plan ("Excess Cash Balance Plan") covering certain current and former employees of the Company who participate in the Pension Plan, as well as an additional unfunded non-contributory, non-qualified defined benefit plan ("CSC Supplemental Benefit Plan") for the benefit of certain former officers and employees of the Company which provided that, upon retiring on or after normal retirement age, a participant receives a benefit equal to a specified percentage of the participant's average compensation, as defined. All participants were 100% vested in the CSC Supplemental Benefit Plan. The benefits related to the CSC Supplemental Plan were paid to participants in January 2017 and the plan was terminated. The Company amended the Pension Plan and the Excess Cash Balance Plan to freeze participation and future benefit accruals effective December 31, 2013 for all Company employees except those covered by a collective bargaining agreement in Brooklyn. Effective April 1, 2015, participation was frozen and future benefit accruals ceased for employees covered by a collective bargaining agreement in Brooklyn. Therefore, after April 1, 2015, no employee of the Company who was not already a participant could participate in the plans and no further annual Pay Credits (a certain percentage of employees' eligible pay) were made. Existing account balances under the plans continue to be credited with monthly interest in accordance with the terms of the plans. Plan Results for Defined Benefit Plans Summarized below is the funded status and the amounts recorded on the Company's consolidated balance sheets for all of the Company's Defined Benefit Plans at December 31, 2015: Change in projected benefit obligation: Projected benefit obligation at beginning of year $ 430,846 Service cost 344 Interest cost 15,523 Actuarial (gain) loss (14,912 ) Curtailments — Benefits paid (27,838 ) Projected benefit obligation at end of year 403,963 Change in plan assets: Fair value of plan assets at beginning of year 303,676 Actual return (loss) on plan assets, net (3,921 ) Employer contributions 25,929 Benefits paid (27,838 ) Fair value of plan assets at end of year 297,846 Unfunded status at end of year $ (106,117 ) The accumulated benefit obligation for the Company's Defined Benefit Plans aggregated $403,963 at December 31, 2015. The Company's net funded status relating to its Defined Benefit Plans at December 31, 2015 are as follows: Defined Benefit Plans $ (106,117 ) Less: Current portion related to nonqualified plans 6,889 Long-term defined benefit plan obligations $ (99,228 ) Components of the net periodic benefit cost, recorded in other operating expenses, for the Defined Benefit Plans for the period January 1, 2016 to June 20, 2016 and for the year ended December 31, 2015, are as follows: January 1, 2016 to June 20, 2016 Year ended December 31, 2015 Service cost $ — $ 344 Interest cost 7,130 15,523 Expected return on plan assets, net (3,565 ) (8,297 ) Recognized actuarial loss (reclassified from accumulated other comprehensive loss) (1,446 ) 1,294 Settlement (income) loss (reclassified from accumulated other comprehensive loss) (a) 1,655 3,822 Net periodic benefit cost $ 3,774 $ 12,686 (a) As a result of benefit payments to terminated or retired individuals exceeding the service and interest costs for the Pension Plan and the Excess Cash Balance Pension Plan during the period January 1, 2016 through June 20, 2016, and year ended December 31, 2015, the Company recognized a non-cash settlement loss that represented the acceleration of the recognition of a portion of the previously unrecognized actuarial losses recorded in accumulated other comprehensive loss on the Company’s consolidated balance sheets relating to these plans. Plan Assumptions for Defined Benefit Plans Weighted-average assumptions used to determine net periodic cost (made at the beginning of the year) and benefit obligations (made at the end of the year) for the Defined Benefit Plans are as follows: Weighted-Average Assumptions Net Periodic Benefit Cost Benefit Obligations January 1, 2016 to June 20, 2016 Year ended December 31, 2015 December 31, 2015 Discount rate (a) 3.76 % 3.83 % 3.94 % Rate of increase in future compensation levels — % — % — % Expected rate of return on plan assets (Pension Plan only) 3.97 % 4.03 % N/A (a) The discount rates of 3.76% and 3.83% , for the period January 1, 2016 through June 20, 2016, and year ended December 31, 2015, respectively, represent the average of the quarterly discount rates used to remeasure the Company's projected benefit obligation and net periodic benefit cost in connection with the recognition of settlement losses discussed above. The discount rate used by the Company in calculating the net periodic benefit cost for the Cash Balance Plan and the Excess Cash Balance Plan was determined based on the expected future benefit payments for the plans and from the Towers Watson U.S. Rate Link: 40-90 Discount Rate Model. The model was developed by examining the yields on selected highly rated corporate bonds. The Company's expected long-term return on Pension Plan assets is based on a periodic review and modeling of the plan's asset allocation structure over a long-term horizon. Expectations of returns and risk for each asset class are the most important of the assumptions used in the review and modeling and are based on comprehensive reviews of historical data, forward looking economic outlook, and economic/financial market theory. The expected long-term rate of return was chosen as a best estimate and was determined by (a) historical real returns, net of inflation, for the asset classes covered by the investment policy, and (b) projections of inflation over the long-term period during which benefits are payable to plan participants. Pension Plan Assets and Investment Policy The weighted average asset allocations of the Pension Plan at December 31, 2015 are as follows: Plan Assets at 2015 Asset Class: Mutual funds 39 % Fixed income securities 61 Cash equivalents and other — 100 % The Pension Plan's investment objectives reflect an overall low risk tolerance to stock market volatility. This strategy allows for the Pension Plan to invest in portfolios that would obtain a rate of return throughout economic cycles, commensurate with the investment risk and cash flow needs of the Pension Plan. The investments held in the Pension Plan are readily marketable and can be sold to fund benefit payment obligations of the plan as they become payable. Investment allocation decisions are formally made by the Altice USA Benefits Committee, which takes into account investment advice provided by its external investment consultant. The investment consultant takes into account expected long-term risk, return, correlation, and other prudent investment assumptions when recommending asset classes and investment managers to the Company's Investment and Benefit Committee. The major categories of the Pension Plan assets are cash equivalents and bonds which are marked-to-market on a daily basis. Due to the Pension Plan's significant holdings in long-term government and non-government fixed income securities, the Pension Plan's assets are subjected to interest rate risk; specifically, a rising interest rate environment. Consequently, an increase in interest rates may cause a decrease to the overall liability of the Pension Plan thus creating a hedge against rising interest rates. In addition, a portion of the Pension Plan's bond portfolio is invested in foreign debt securities where there could be foreign currency risks associated with them, as well as in non-government securities which are subject to credit risk of the bond issuer defaulting on interest and/or principal payments. Investments at Estimated Fair Value The fair values of the assets of the Pension Plan at December 31, 2015 by asset class are as follows: Asset Class Level I Level II Level III Total Mutual funds $ 117,174 $ — $ — $ 117,174 Fixed income securities held in a portfolio: Foreign issued corporate debt — 12,825 — 12,825 U.S. corporate debt — 54,005 — 54,005 Government debt — 8,273 — 8,273 U.S. Treasury securities — 90,414 — 90,414 Asset-backed securities — 18,563 — 18,563 Cash equivalents (a) 893 — — 893 Total (b) $ 118,067 $ 184,080 $ — $ 302,147 (a) Represents an investment in a money market fund. (b) Excludes cash and net payables relating to the sale of securities that were not settled as of December 31, 2015. The fair values of mutual funds and cash equivalents were derived from quoted market prices that the Pension Plan administrator has the ability to access. The fair values of corporate and government debt, treasury securities and asset-back securities were derived from bids received from a vendor or broker not available in an active market that the Pension Plan administrator has the ability to access. Defined Contribution Plans The Company also maintains the Cablevision 401(k) Savings Plan, a contributory qualified defined contribution plan for the benefit of non-union employees of the Company. Employees can contribute a percentage of eligible annual compensation and the Company will make a matching cash contribution or discretionary contribution, as defined in the plan. In addition, the Company maintains an unfunded non-qualified excess savings plan for which the Company provides a matching contribution similar to the Cablevision 401(k) Savings Plan. Applicable employees of the Company are eligible for an enhanced employer matching contribution, as well as a year-end employer discretionary contribution to the Cablevision 401(k) Savings Plan and the Cablevision Excess Savings Plan. The cost associated with these plans (including the enhanced employer matching and discretionary contributions) was $26,964 and $61,343 for the period January 1, 2016 through June 20, 2016, and year ended December 31, 2015, respectively.

CVC - EQUITY AND LONG-TERM INCE

CVC - EQUITY AND LONG-TERM INCENTIVE PLANS	12 Months Ended
	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
SHARE-BASED COMPENSATION	SHARE-BASED COMPENSATION Carry Unit Plan Certain employees of the Company and its affiliates received awards of units in a carry unit plan of Neptune Management LP, an entity which has an ownership interest in the Company. The awards generally vest as follows: 50% on the second anniversary of June 21, 2016 for Cablevision employees or December 21, 2015 for Cequel employees ("Base Date"), 25% on the third anniversary of the Base Date, and 25% on the fourth anniversary of the Base Date. Neptune Holding US GP LLC, the general partner of Neptune Management LP, has the right to repurchase (or to assign to an affiliate, including the Company, the right to repurchase) vested awards held by employees for sixty days following their termination. For performance-based awards under the plan, vesting occurs upon achievement or satisfaction of a specified performance condition. The Company considered the probability of achieving the established performance targets in determining the share-based compensation with respect to these awards at the end of each reporting period. Beginning on the fourth anniversary of the Base Date, the holders of carry units have an annual opportunity (a sixty day period determined by the administrator of the plan) to sell their units back to Neptune Holding US GP LLC (or affiliate, including the Company, designated by Neptune Holding US GP LLC). Accordingly, the carry units are presented as temporary equity on the consolidated balance sheets at fair value. Adjustments to fair value at each reporting period are recorded in paid-in capital. The right of Neptune Holding US GP LLC to assign to an affiliate, including the Company, the right to repurchase an employee’s vested units during the sixty-day period following termination, or to satisfy its obligation to repurchase an employee’s vested units during annual 60 day periods following the fourth anniversary of the Base Date, may be exercised by Neptune Holding US GP LLC in its discretion at the time a repurchase right or obligation arises. The carry unit plan requires the purchase price payable to the employee or former employee, as the case may be, to be paid in cash, a promissory note (with a term of not more than 3 years and bearing interest at the long-term applicable federal rate under Section 1274(d) of the Internal Revenue Code) or combination thereof, in each case as determined by Neptune Holding US GP LLC in its discretion at the time of the repurchase. Neptune Holding US GP LLC expects that vested units will be redeemed for shares of the Company's Class A common stock upon vesting. The Company measures the cost of employee services received in exchange for carry units based on the fair value of the award at grant date. In addition these units are presented as temporary equity on our consolidated balance sheet at fair value. For carry unit awards granted in 2016, an option pricing model was used which requires subjective assumptions for which changes in these assumptions could materially affect the fair value of the carry units outstanding. The time to liquidity event assumption was based on management’s judgment. The equity volatility assumption was estimated using the historical weekly volatility of publicly traded comparable companies. The risk-free rate assumed was based on the U.S. Constant Maturity Treasury Rates for a period matching the expected time to liquidity event. The discount for lack of marketability was based on Finnerty's (2012) average-strike put option model. For carry unit awards granted in the first and second quarter of 2017, the Company estimated the grant date fair value based on the value established in the Company's IPO. The following table summarizes activity relating to carry units: Number of Time Vesting Awards Number of Performance Based Vesting Awards Weighted Average Grant Date Fair Value Balance, December 31, 2017 168,550,001 10,000,000 $ 0.71 Vested (68,037,500 ) — 0.37 Forfeited (16,937,501 ) — 0.62 Balance, December 31, 2018 83,575,000 10,000,000 $ 1.14 The weighted average fair value per unit was $1.95 , $2.50 , and $1.76 as of December 31, 2018 , 2017 and 2016 , respectively. For the years ended December 31, 2018 , 2017 and 2016 the Company recognized an expense of $41,321 , $57,430 and $14,368 , respectively, related to the push down of share-based compensation related to the carry unit plan. Stock Option Plan In connection with the Company's IPO, the Company adopted the Altice USA 2017 Long Term Incentive Plan (the "2017 LTIP"). Under the 2017 LTIP, the Company may grant awards of options, restricted shares, restricted share units, stock appreciation rights, performance stock, performance stock units and other awards. Under the 2017 LTIP, awards may be granted to officers, employees and consultants of the Company or any of its affiliates. The 2017 LTIP is administered by the Company's Board of Directors (the "Board"), subject to the provision of the stockholders' agreement. The Board has delegated its authority to the Company's Compensation Committee. The Compensation Committee has the full power and authority to, among other things, select eligible participants, to grant awards in accordance with the 2017 LTIP, to determine the number of shares subject to each award or the cash amount payable in connection with an award and determine the terms and conditions of each award. In November 2018, the Board and the Company's stockholders holding a majority of the voting power of its capital stock approved an amendment to the 2017 LTIP, which increased the maximum aggregate number of shares that may be issued for all purposes under the Plan to 19,879,291 . The Board has the authority to amend, suspend, or terminate the 2017 LTIP. No amendment, suspension or termination will be effective without the approval of the Company's stockholders if such approval is required under applicable laws, rules and regulations. Options outstanding under the 2017 LTIP Plan either cliff vest on the third anniversary of the date of grant or vest over 4 years, where 50% vest on the second anniversary, 25% on the third anniversary and 25% on the fourth anniversary of the date of grant. The option awards generally are subject to continued employment with the Company, and expire ten years from the date of grant. Performance based option awards vest upon achievement of performance criteria. The following table summarizes activity related to employee stock options: Shares Under Option Weighted Average Exercise Price Per Share Weighted Average Remaining Contractual Term (in years) Time Vesting Performance Based Vesting Aggregate Intrinsic Value (a) Balance at December 31, 2017 5,110,747 — $ 17.45 9.97 $ 8,331 Granted 6,753,659 95,953 17.58 Forfeited (634,238 ) (22,314 ) 17.92 Balance at December 31, 2018 11,230,168 73,639 17.50 9.47 (11,057 ) Options exercisable at December 31, 2018 — — — — — (a) The aggregate intrinsic value is calculated as the difference between the exercise price and the closing price of the Company's Class A common stock at the respective date. The Company recognized share-based compensation expense related to employee stock options for the year ended December 31, 2018 of $18,491 . The Company calculated the fair value of each option award on the date of grant using the Black-Scholes valuation model. The Company's computation of expected life was determined based on the simplified method (the average of the vesting period and option term) due to the Company's lack of recent historical data for similar awards. The interest rate for periods within the contractual life of the stock option was based on interest yields for U.S. Treasury instruments in effect at the time of grant. The Company's computation of expected volatility was based on historical volatility of its common stock and the expected volatility of comparable publicly-traded companies who granted options that had similar expected lives. The following weighted-average assumptions were used to calculate the fair values of stock option awards granted during the years ended December 31, 2018 and 2017: Year Ended December 31, 2018 2017 Risk-free interest rate 2.74% 2.30% Expected life (in years) 6.49 6.44 Dividend yield —% —% Volatility 35.72% 33.95% Grant date fair value $6.91 $8.77
Cablevision Systems Corporation And Subsidiaries
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
SHARE-BASED COMPENSATION	EQUITY AND LONG-TERM INCENTIVE PLANS Equity Plans In connection with the Merger, outstanding equity-based awards granted under the Company’s equity plans were cancelled and converted into a right to receive cash based upon the $34.90 per Share merger price in accordance with the original terms of the awards. On the Merger Date, the Company had 11,880,700 stock options, 3,769,485 restricted shares, 1,724,940 restricted stock units issued to employees and 466,283 restricted stock units issued to non-employee directors outstanding. The aggregate payment was $439,167 and represents a portion of the merger consideration. Approximately $63,484 of compensation costs related to the acceleration of the vesting of these awards in connection with the Merger and the related employer payroll taxes of $7,929 were recorded on the black line and therefore are not reflected in either the Predecessor or Successor periods. In March 2015, the Company's Board of Directors approved the Cablevision Systems Corporation 2015 Employee Stock Plan ("2015 Plan"), which was approved by Cablevision's stockholders at its annual stockholders meeting on May 21, 2015. Under the 2015 Plan, the Company was authorized to grant stock options, restricted shares, restricted stock units, stock appreciation rights, and other equity-based awards. As of December 31, 2015, 79,780 equity based awards had been granted under the 2015 Plan. The Company also had an employee stock plan ("2006 Plan") under which it was authorized to grant incentive stock options, nonqualified stock options, restricted shares, restricted stock units, stock appreciation rights and other equity-based awards and a 2006 Stock Plan for Non-Employee Directors, whereby the Company was authorized to grant nonqualified stock options, restricted stock units and other equity-based awards. In 2015, the Company granted its non-employee directors an aggregate of 73,056 restricted stock units. Total non-employee director restricted stock units outstanding as of December 31, 2015 were 466,283 . Since share-based compensation expense is based on awards that are ultimately expected to vest, such compensation expense was reduced for estimated forfeitures. Forfeitures were estimated based primarily on historical experience. The following table presents the share-based compensation expense recognized by the Company as other operating expenses: January 1, 2016 to June 20, 2016 Year ended December 31, 2015 Stock options $ 3,848 $ 9,159 Restricted shares and restricted stock units 20,930 51,162 Share-based compensation related to equity classified awards 24,778 60,321 Other share-based compensation 453 4,965 Total share-based compensation $ 25,231 $ 65,286 An income tax benefit of $10,357 and $26,718 was recognized in continuing operations resulting from share-based compensation expense for the period from January 1, 2016 through June 20, 2016 and year ended December 31, 2015, respectively. Cash received from stock option exercises for the period January 1, 2016 through June 20, 2016, and year ended December 31, 2015, respectively was $14,411 and $18,727 , respectively. Valuation Assumptions - Stock Options The Company calculated the fair value of each option award on the date of grant. The Company's computation of expected life was determined based on historical experience of similar awards, giving consideration to the contractual terms of the share-based awards and vesting schedules, or by using the simplified method (the average of the vesting period and option term), if applicable. The interest rate for periods within the contractual life of the stock option was based on interest yields for U.S. Treasury instruments in effect at the time of grant. The Company's computation of expected volatility was based on historical volatility of its common stock. The following assumptions were used to calculate the fair values of stock option awards granted in the first quarter of 2015: 2015 Risk-free interest rate 1.82 % Expected life (in years) 8 Dividend yield 3.63 % Volatility 39.98 % Grant date fair value $ 5.45 Share-Based Payment Award Activity The following table summarizes activity relating to Company employees who held Cablevision stock options for the period January 1, 2016 to June 20, 2016 and for the year ended December 31, 2015: Shares Under Option Weighted Average Exercise Price Per Share Weighted Average Remaining Contractual Term (in years) Time Vesting Options Performance Based Vesting Options Aggregate Intrinsic Value (a) Balance, December 31, 2014 5,097,666 7,633,500 $ 14.41 7.17 $ 79,347 Granted 2,000,000 — 19.17 Exercised (353,666 ) (1,024,283 ) 12.84 Balance, December 31, 2015 6,744,000 6,609,217 15.28 6.80 221,900 Exercised (744,000 ) (728,517 ) 13.97 Balance, June 20, 2016 6,000,000 5,880,700 $ 15.45 (a) The aggregate intrinsic value is calculated as the difference between (i) the exercise price of the underlying award and (ii) the quoted price of CNYG Class A common stock on December 31, 2015, as indicated. Restricted Stock Award Activity The following table summarizes activity relating to Company employees who held Cablevision restricted shares and restricted stock units for the period January 1, 2016 to June 20, 2016 and for the year ended December 31, 2015: Number of Restricted Shares Number of Performance Restricted Shares Number of Performance Based Restricted Stock Units ("PSU") (a) Weighted Average Fair Value Per Share at Date of Grant Unvested award balance, December 31, 2014 5,314,870 2,035,300 — $ 15.46 Granted 1,747,870 584,400 1,851,700 19.43 Vested (1,598,363 ) (739,600 ) — 14.48 Awards forfeited (496,629 ) — (79,270 ) 17.28 Unvested award balance, December 31, 2015 4,967,748 1,880,100 1,772,430 17.53 Vested (2,239,167 ) (753,296 ) — 15.35 Awards forfeited (85,900 ) — (47,490 ) 18.38 Unvested award balance, June 20, 2016 2,642,681 1,126,804 1,724,940 (a) The PSUs entitled the employee to shares of CNYG common stock up to 150% of the number of PSUs granted depending on the level of achievement of the specified performance criteria. If the minimum performance threshold was not met, no shares were issued. Accrued dividends were paid to the extent that a PSU vested and the related stock was issued. During the first quarter of 2016, 2,992,463 Cablevision restricted shares issued to employees of the Company vested. To fulfill the employees' statutory minimum tax withholding obligations for the applicable income and other employment taxes, 1,248,875 of these shares, with an aggregate value of $41,469 , were surrendered to the Company. During the year ended December 31, 2015, 2,337,963 Cablevision restricted shares issued to employees of the Company vested. To fulfill the employees' statutory minimum tax withholding obligations for the applicable income and other employment taxes, 1,004,950 of these shares, with an aggregate value of $19,141 were surrendered to the Company. These acquired shares had been classified as treasury stock. Long-Term Incentive Plan Awards In March 2011, the Company's Board of Directors approved the Cablevision Systems Corporation 2011 Cash Incentive Plan, which was approved by the Company's stockholders at its annual stockholders meeting in May 2011. The Company recorded expenses of $9,169 and $27,170 for the period January 1, 2016 through June 20, 2016, and year ended December 31, 2015, respectively, related to this plan. Carried Unit Plan Subsequent to the merger, in July 2016, certain employees of the Company and its affiliates received awards of units in a Carry Unit Plan of an entity which has an ownership interest in the Company’s parent, Neptune Holding. The awards generally will vest as follows: 50% on the second anniversary of June 21, 2016 (“Base Date”), 25% on the third anniversary of the Base Date, and 25% on the fourth anniversary of the Base Date. Prior to the fourth anniversary, the Company has the right to repurchase vested awards held by employees upon their termination. The Carry Unit Plan has 259,442,785 units authorized for issuance, of which 102,500,000 have been issued to employees of the Company and 100,300,000 have been issued to employees of Altice and affiliated companies.

CVC - AFFILIATE AND RELATED PAR

CVC - AFFILIATE AND RELATED PARTY TRANSACTIONS	12 Months Ended
	Dec. 31, 2018
Related Party Transaction [Line Items]
AFFILIATE AND RELATED PARTY TRANSACTIONS	AFFILIATE AND RELATED PARTY TRANSACTIONS Equity Method Investments In April 2018, Altice Europe transferred its ownership of i24 US and i24 Europe ('i24NEWS"), Altice Europe's 24/7 international news and current affairs channels to the Company for minimal consideration (the "i24NEWS Acquisition"). As the acquisition was a combination of businesses under common control, the Company combined the results of operations and related assets and liabilities of i24NEWS as of April 1, 2018. Operating results for periods prior to April 1, 2018 and the balance sheet as of December 31, 2017 have not been revised to reflect the combination of i24NEWS as the impact was deemed immaterial. The Company's equity in the net losses of i24NEWS prior to April 1, 2018 of $1,130 and $2,821 for the year ended December 31, 2017 were recorded using the equity method and reflected in other expense, net in the Company's consolidated statements of operations. The Company's investment in i24NEWS as of December 31, 2017 of $930 is included in investment in affiliates on the Company's consolidated balance sheet. In April 2018, the Company redeemed a 24% interest in Newsday LLC ("Newsday") and recognized a gain of $13,298 , reflected in gain (loss) on investments and sale of affiliate interests, net in the Company's consolidated statements of operations. For the year ended December 31, 2018, 2017 and 2016, the Company recorded equity in the net loss of Newsday of $ 9,719 $7,219 and $1,132 , respectively, reflected in other expense, net in the Company's consolidated statements of operations. The Company's deficit investment in Newsday as of December 31, 2017 of $3,579 is included in deficit investments in affiliates on the Company's consolidated balance sheet. From July 7, 2016 through April 2018, the Company held a 25% ownership interest in Newsday and prior to July 7, 2016, Newsday was a wholly-owned subsidiary of Cablevision. Affiliate and Related Party Transactions Altice USA is controlled by Patrick Drahi who is also the controlling stockholder of Altice Europe and its subsidiaries. As the transactions discussed below were conducted between entities under common control by Mr. Drahi and equity method investees, 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 charges related to services provided to or received from subsidiaries of Altice Europe and Newsday: Years Ended December 31, 2018 2017 2016 Revenue $ 2,575 $ 1,100 $ 1,086 Operating expenses: Programming and other direct costs $ (7,261 ) $ (4,176 ) $ (1,947 ) Other operating expenses, net (16,307 ) (33,140 ) (18,854 ) Operating expenses, net (23,568 ) (37,316 ) (20,801 ) Interest expense (see Note 11) (a) (600 ) (90,405 ) (112,712 ) Other income. net 149 — — Loss on extinguishment of debt and write-off of deferred financing costs (see Note 11) — (513,723 ) — Net charges $ (21,444 ) $ (640,344 ) $ (132,427 ) Capital Expenditures $ 14,951 $ 22,012 $ 45,886 (a) The 2016 amount includes $10,155 related to Holdco Notes prior to the exchange in addition to the interest related to notes payable to affiliates and related parties discussed in Note 11. In connection with the Company's IPO in June 2017, the Company converted the notes payable to affiliates and related parties into shares of the Company’s common stock at the IPO price. Revenue The Company recognized revenue primarily from the sale of advertising to Teads. Programming and other direct costs Programming and other direct costs include costs incurred by the Company for the transport and termination of voice and data services provided by a subsidiary of Altice Europe. Other operating expenses, net A subsidiary of Altice Europe provided certain executive services, as well as consulting, advisory and other services, including, prior to the IPO, CEO, CFO and COO services, to the Company. Compensation under the terms of the agreement was an annual fee of $30,000 to be paid by the Company. Fees associated with this agreement recorded by the Company amounted to approximately $13,250 , $30,000 and $ 20,556 for the years ended December 31, 2018 , 2017 and 2016 , respectively. As of June 20, 2017, the CEO, CFO and COO became employees of the Company and the agreement was assigned to Altice Europe by a subsidiary of Altice Europe. This agreement was terminated upon the completion of the Distribution discussed in Note 1. Other operating expenses also include charges for services provided by other subsidiaries of Altice Europe aggregating $3,057 , $4,057 and $887 , for the years ended December 31, 2018, 2017 and 2016, respectively, net of a credit of $917 and $2,589 related to transition services provided to Newsday for the years ended December 31, 2017 and 2016 , respectively. Capital Expenditures Capital expenditures for the year ended December 31, 2018 include $14,951 for equipment purchased and software development services provided by subsidiaries of Altice Europe. Capital expenditures for the year ended December 31, 2017 include $17,434 of equipment purchased from Altice Labs S.A., and $4,578 of software development services, that were capitalized, from Altice Management International and other Altice Europe subsidiaries. Capital expenditures for the year ended December 31, 2016 include $44,121 of equipment purchased from Altice Management International and $1,025 from another Altice Europe subsidiary. In addition, the Company acquired certain software development services that were capitalized from Altice Labs S.A. aggregating $740 . Aggregate amounts that were due from and due to related parties are summarized below: December 31, 2018 2017 Due from: CVC 3 (a) $ 13,100 $ 12,951 Newsday (b) 490 2,713 Altice Europe (b) 1,271 33 Altice Dominican Republic (b) 2,550 — i24NEWS (b) — 4,036 Other Altice Europe subsidiaries (b) 146 31 $ 17,557 $ 19,764 Due to: Altice Europe (c) $ 15,235 $ — Newsday (b) 22 33 Altice Labs S.A. (d) 4,864 7,354 Other Altice Europe subsidiaries (d) 5,975 3,611 $ 26,096 $ 10,998 (a) Represents interest on senior notes paid by the Company on behalf of Altice US Finance S.A., which merged into CVC 3 in 2018. (b) Represents amounts paid by the Company on behalf of or for services provided to the respective related party and for Newsday, the net amounts due from the related party also include charges for certain transition services provided. (c) Includes $13,250 related to the agreement discussed above. (d) Represents amounts due to affiliates for the purchase of equipment and advertising services, as well as reimbursement for payments made on our behalf. In the second quarter of 2017, prior to the Company's IPO, the Company declared and paid cash distributions aggregating $839,700 to stockholders, $500,000 of which were funded with proceeds from borrowings under CSC Holdings' revolving credit facility. In 2016, the Company declared cash distributions of $445,176 , of which $365,559 were paid in 2016 and $79,617 were paid in the first quarter of 2017.
Cablevision Systems Corporation And Subsidiaries
Related Party Transaction [Line Items]
AFFILIATE AND RELATED PARTY TRANSACTIONS	AFFILIATE AND RELATED PARTY TRANSACTIONS Equity Method Investments In September 2015, the Company purchased the minority interest in Newsday Holdings LLC ("Newsday Holdings") held by Tribune Media Company ("Tribune") for approximately $8,300 . As a result of this transaction, Newsday Holdings became a wholly-owned subsidiary of the Company. In addition, the indemnity provided by the Company to Tribune for certain taxes incurred by Tribune if Newsday Holdings or its subsidiary sold or otherwise disposed of Newsday assets in a taxable transaction or failed to maintain specified minimum outstanding indebtedness, was amended so that the restriction period lapsed on September 2, 2015. Subsequent to the Merger, in July 2016, the Company completed the sale of a 75% interest in Newsday LLC. The Company retained the remaining 25% ownership interest. In December 2016, the Company made an investment of $1,966 in i24NEWS, Altice’s 24/7 international news and current affairs channel, representing a 25% ownership interest and the 75% interest is owned by a subsidiary of Altice. Related Party Transactions As the transactions discussed below were conducted between subsidiaries under common control, 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. Cablevision is controlled by Charles F. Dolan, certain members of his immediate family and certain family related entities (collectively the “Dolan Family”). Members of the Dolan Family are also the controlling stockholders of AMC Networks, The Madison Square Garden Company and MSG Networks Inc. ("MSG Networks"). The following table summarizes the revenue and charges (credits) related to services provided to or received from AMC Networks, Madison Square Garden Company and MSG Networks for the Predecessor periods: January 1, 2016 to June 20, 2016 Year Ended December 31, 2015 Revenue $ 2,088 $ 5,343 Operating expenses: Programming and other direct costs, net of credits $ 84,636 $ 176,909 Other operating expenses, net of credits 2,182 5,372 Operating expenses, net 86,818 182,281 Net charges $ 84,730 $ 176,938 Revenue The Company recognized revenue in connection with television advertisements and print advertising, as well as certain telecommunication services charged by its subsidiaries to AMC Networks, Madison Square Garden and MSG Networks. The Company and its subsidiaries, together with AMC Networks, Madison Square Garden and MSG Networks may have entered into agreements with third parties in which the amounts paid/received by AMC Networks, Madison Square Garden and MSG Networks, their subsidiaries, or the Company may have differed from the amounts that would have been paid/received if such arrangements were negotiated separately. Where subsidiaries of the Company have incurred a cost incremental to fair value and AMC Networks, Madison Square Garden and MSG Networks have received a benefit incremental to fair value from these negotiations, the Company and its subsidiaries charged AMC Networks, Madison Square Garden and MSG Networks for the incremental amount. Programming and other direct costs Programming and other direct costs included costs incurred by the Company for the carriage of the MSG Networks, as well as for AMC, WE tv, IFC, Sundance Channel and BBC America (2015 period only) on the Company's cable systems. The Company also purchased certain programming signal transmission and production services from AMC Networks. Other operating expenses (credits) The Company, AMC Networks, Madison Square Garden and MSG Networks routinely entered into transactions with each other in the ordinary course of business. Such transactions included, but were not limited to, sponsorship agreements and cross-promotion arrangements. Additionally, amounts reflected in the tables were net of allocations to AMC Networks, Madison Square Garden and MSG Networks for services performed by the Company on their behalf. Amounts also included charges to the Company for services performed or paid by the affiliate on the Company's behalf. Subsequent to the Merger, the Company continues to receive or provide services to these entities, but these entities are no longer related parties. Transactions with Other Affiliates During the period ended January 1, 2016 to June 20, 2016 and the year ended December 31, 2015, the Company provided services to or incurred costs on behalf of certain related parties, including from time to time, the Dolan Family. All costs incurred on behalf of these related parties were reimbursed to the Company. Aggregate amounts that were due from and due to AMC Networks, Madison Square Garden and MSG Networks and other affiliates at December 31, 2015 (Predecessor) is summarized below: December 31, 2015 Amounts due from affiliates $ 767 Amounts due to affiliates 29,729

CVC - COMMITMENTS AND CONTINGEN

CVC - COMMITMENTS AND CONTINGENCIES	12 Months Ended
	Dec. 31, 2018
Unrecorded Unconditional Purchase Obligation [Line Items]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES Commitments Future cash payments and commitments required under arrangements pursuant to contracts entered into by the Company in the normal course of business as of December 31, 2018 are as follows: Payments Due by Period Total Year 1 Years 2-3 Years 4-5 More than 5 years Off balance sheet arrangements: Purchase obligations (a) $ 8,906,134 $ 3,190,028 $ 4,940,814 $ 742,931 $ 32,361 Guarantees (b) 36,912 36,912 — — — Letters of credit (c) 147,564 120 147,444 — — Total $ 9,090,610 $ 3,227,060 $ 5,088,258 $ 742,931 $ 32,361 (a) Purchase obligations primarily include contractual commitments with various programming vendors to provide video services to customers and minimum purchase obligations to purchase goods or services, including contracts to acquire handsets and other equipment. Future fees payable under contracts with programming vendors are based on numerous factors, including the number of customers receiving the programming. Amounts reflected above related to programming agreements are based on the number of customers receiving the programming as of December 31, 2018 multiplied by the per customer rates or the stated annual fee, as applicable, contained in the executed agreements in effect as of December 31, 2018 . (b) Includes franchise and performance surety bonds primarily for the Company's cable television systems. (c) Represent letters of credit guaranteeing performance to municipalities and public utilities and payment of insurance premiums. Payments due by period for these arrangements represent the year in which the commitment expires although payments under these arrangements are required only in the event of nonperformance. The table above does not include obligations for payments required to be made under multi-year franchise agreements based on a percentage of revenues generated from video service per year. Many of the Company's franchise agreements and utility pole leases require the Company to remove its cable wires and other equipment upon termination of the respective agreements. The Company has concluded that the fair value of these asset retirement obligations cannot be reasonably estimated since the range of potential settlement dates is not determinable. The table above does not include obligations for rent related to utility poles used in our operations. The Company's pole rental agreements are for varying terms, and management anticipates renewals as they expire. Rent expense incurred for pole rental attachments for the years ended December 31, 2018 , 2017 and 2016 was $33,082 , $31,308 , and $22,432 , respectively. Legal Matters Following expiration of the affiliation agreements for carriage of certain Fox broadcast stations and cable networks on October 16, 2010, News Corporation terminated delivery of the programming feeds to Cablevision, and as a result, those stations and networks were unavailable on Cablevision's cable television systems. On October 30, 2010, Cablevision and Fox reached an agreement on new affiliation agreements for these stations and networks, and carriage was restored. Several purported class action lawsuits alleging breach of contract, unjust enrichment, and consumer fraud and seeking unspecified compensatory damages, punitive damages and attorneys' fees were subsequently filed on behalf of Cablevision's customers seeking recovery for the lack of Fox programming. Those lawsuits were consolidated in an action before the U. S. District Court for the Eastern District of New York, and a consolidated complaint was filed in that court on February 22, 2011. On March 28, 2012, in ruling on Cablevision's motion to dismiss, the Court dismissed all of plaintiffs’ claims, except for breach of contract. On March 30, 2014, the Court granted plaintiffs’ motion for class certification. The parties have entered into a settlement agreement, which was granted final approval by the Court on May 17, 2018. As of December 31, 2018, the Company had an estimated liability associated with the settlement totaling $5,000 . In October 2015, the New York Attorney General (“NYAG”) began an investigation into whether the major Internet Service Providers in New York State deliver advertised Internet speeds. On December 21, 2018, the Company entered into a settlement agreement with the NYAG, resolving the investigation. In the latter half of 2018, eight named plaintiffs, each on behalf of a putative class of stockholders who purchased Company common stock in the Company'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 the Company, Altice Europe, and the Company'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. Plaintiffs claim 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. The New York State Supreme Court lawsuits are presently being consolidated into one action. 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. 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 relating to Voice over Internet Protocol (“VoIP”) services. On December 3, 2018, Sprint filed a second complaint alleging that the Company infringes Sprint’s patents purportedly relating to VOD services. The lawsuits are part of a pattern of litigation that was initiated as far back as 2007 by Sprint against numerous broadband and telecommunications providers. The Company is investigating the allegations, and will 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.
Cablevision Systems Corporation And Subsidiaries
Unrecorded Unconditional Purchase Obligation [Line Items]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES Legal Matters Cable Operations Litigation Marchese, et al. v. Cablevision Systems Corporation and CSC Holdings, LLC: The Company is a defendant in a lawsuit filed in the U.S. District Court for the District of New Jersey by several present and former Cablevision subscribers, purportedly on behalf of a class of iO video subscribers in New Jersey, Connecticut and New York. After three versions of the complaint were dismissed without prejudice by the District Court, plaintiffs filed their third amended complaint on August 22, 2011, alleging that the Company violated Section 1 of the Sherman Antitrust Act by allegedly tying the sale of interactive services offered as part of iO television packages to the rental and use of set-top boxes distributed by Cablevision, and violated Section 2 of the Sherman Antitrust Act by allegedly seeking to monopolize the distribution of Cablevision compatible set-top boxes. Plaintiffs seek unspecified treble monetary damages, attorney's fees, as well as injunctive and declaratory relief. On September 23, 2011, the Company filed a motion to dismiss the third amended complaint. On January 10, 2012, the District Court issued a decision dismissing with prejudice the Section 2 monopolization claim, but allowing the Section 1 tying claim and related state common law claims to proceed. Cablevision's answer to the third amended complaint was filed on February 13, 2012. On December 7, 2015, the parties entered into a settlement agreement, which is subject to approval by the Court. On December 11, 2015, plaintiffs filed a motion for preliminary approval of the settlement, conditional certification of the settlement class, and approval of a class notice distribution plan. On March 10, 2016 the Court granted preliminary approval of the settlement and approved the class notice distribution plan. Subsequent to the Merger, the class notice distribution and the claims submission process have now concluded. The Court granted final approval of the settlement on September 12, 2016 in the amount of $15,600 , and the effective date of the settlement was October 24, 2016. In re Cablevision Consumer Litigation: Following expiration of the affiliation agreements for carriage of certain Fox broadcast stations and cable networks on October 16, 2010, News Corporation terminated delivery of the programming feeds to the Company, and as a result, those stations and networks were unavailable on the Company's cable television systems. On October 30, 2010, the Company and Fox reached an agreement on new affiliation agreements for these stations and networks, and carriage was restored. Several purported class action lawsuits were subsequently filed on behalf of the Company's customers seeking recovery for the lack of Fox programming. Those lawsuits were consolidated in an action before the U. S. District Court for the Eastern District of New York, and a consolidated complaint was filed in that court on February 22, 2011. Plaintiffs asserted claims for breach of contract, unjust enrichment, and consumer fraud, seeking unspecified compensatory damages, punitive damages and attorneys' fees. On March 28, 2012, the Court ruled on the Company's motion to dismiss, denying the motion with regard to plaintiffs' breach of contract claim, but granting it with regard to the remaining claims, which were dismissed. On April 16, 2012, plaintiffs filed a second consolidated amended complaint, which asserts a claim only for breach of contract. The Company's answer was filed on May 2, 2012. On October 10, 2012, plaintiffs filed a motion for class certification and on December 13, 2012, a motion for partial summary judgment. On March 31, 2014, the Court granted plaintiffs' motion for class certification, and denied without prejudice plaintiffs' motion for summary judgment. On May 30, 2014, the Court approved the form of class notice, and on October 7, 2014, approved the class notice distribution plan. The class notice distribution has been completed, and the opt-out period expired on February 27, 2015. Expert discovery commenced on May 5, 2014, and concluded on December 8 and 28, 2015, when the Court ruled on the pending expert discovery motions. On January 26, 2016, the Court approved a schedule for filing of summary judgment motions. Plaintiffs filed a motion for summary judgment on March 31, 2016. The Company filed its own summary judgment motion on June 13, 2016. The parties are actively engaged in settlement discussions although financial terms have not yet been finalized. Patent Litigation Cablevision 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. The Company believes that the claims are without merit and intends to defend the actions vigorously, but is unable to predict the outcome of these lawsuits or reasonably estimate a range of possible loss. In addition to the matters discussed above, the Company is party to various lawsuits, some involving claims for substantial damages. 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. Other Litigation In April 2011, Thomas C. Dolan, a director and Executive Vice President, Strategy and Development, in the Office of the Chairman at Cablevision, filed a lawsuit against Cablevision and Rainbow Media Holdings LLC (which was subsequently dismissed as a party) in New York State Supreme Court. The lawsuit raised compensation-related claims related to events largely from 2005 to 2008. The matter was handled under the direction of an independent committee of the Board of Directors of Cablevision. In April 2015, the Court granted summary judgment in favor of the plaintiff on liability, with damages to be determined. On June 18, 2015, the Company filed a notice of appeal. On February 8, 2016, Cablevision and Thomas C. Dolan entered into a settlement pursuant to which the Company agreed to pay plaintiff $21,000 and plaintiff released all claims. A stipulation of dismissal with prejudice was approved and entered by the Court on February 8, 2016, and payment was made the same day. The appeal has also been withdrawn. The Company recorded an expense of $21,000 which is reflected in discontinued operations in the accompanying consolidated statements of operations for the year ended December 31, 2015 (see Note 6).

CVC - INTERIM FINANCIAL INFORMA

CVC - INTERIM FINANCIAL INFORMATION (Unaudited)	12 Months Ended
	Dec. 31, 2018
Selected Quarterly Financial Information
INTERIM FINANCIAL INFORMATION (Unaudited)	INTERIM FINANCIAL INFORMATION (Unaudited) The following is a summary of the Company's selected quarterly financial data: Three Months Ended March 31, 2018 June 30, September 30, December 31, Total Residential: Pay TV $ 1,033,708 $ 1,034,404 $ 1,054,667 $ 1,033,649 $ 4,156,428 Broadband 701,621 712,202 729,907 743,725 2,887,455 Telephony 166,038 163,499 161,351 162,007 652,895 Business services and wholesale 333,090 337,388 344,193 348,087 1,362,758 Advertising 87,582 109,898 123,066 162,103 482,649 Other 7,675 6,762 4,617 5,369 24,423 Revenue 2,329,714 2,364,153 2,417,801 2,454,940 9,566,608 Operating expenses (2,016,676 ) (2,029,094 ) (1,912,243 ) (1,926,216 ) (7,884,229 ) Operating income $ 313,038 $ 335,059 $ 505,558 $ 528,724 $ 1,682,379 Net income (loss) $ (128,949 ) $ (98,004 ) $ 33,739 $ 213,808 $ 20,594 Net loss (income) attributable to noncontrolling interests (2 ) 149 (1,186 ) (722 ) (1,761 ) Net income (loss) attributable to Altice USA Inc.'s stockholders $ (128,951 ) $ (97,855 ) $ 32,553 $ 213,086 $ 18,833 Basic and diluted net income (loss) per share attributable to Altice USA Inc.'s stockholders $ (0.17 ) $ (0.13 ) $ 0.04 $ 0.30 $ 0.03 Three Months Ended March 31, 2017 June 30, September 30, December 31, Total Residential: Pay TV $ 1,083,878 $ 1,071,163 $ 1,069,946 $ 1,049,135 $ 4,274,122 Broadband 625,918 642,620 658,278 681,779 2,608,595 Telephony 180,961 178,261 172,479 169,064 700,765 Business services and wholesale 319,420 323,641 324,642 330,510 1,298,213 Advertising 83,361 97,501 89,292 121,712 391,866 Other 8,721 9,176 7,884 7,608 33,389 Revenue 2,302,259 2,322,362 2,322,521 2,359,808 9,306,950 Operating expenses (2,052,149 ) (2,069,094 ) (2,201,946 ) (2,142,753 ) (8,465,942 ) Operating income $ 250,110 $ 253,268 $ 120,575 $ 217,055 $ 841,008 Net income (loss) $ (76,188 ) $ (479,939 ) $ (192,434 ) $ 2,243,325 $ 1,494,764 Net income attributable to noncontrolling interests (237 ) (365 ) (135 ) (850 ) (1,587 ) Net income (loss) attributable to Altice USA, Inc. stockholders $ (76,425 ) $ (480,304 ) $ (192,569 ) $ 2,242,475 $ 1,493,177 Basic and diluted net income (loss) per share attributable to Altice USA Inc.'s stockholders $ (0.12 ) $ (0.73 ) $ (0.26 ) $ 3.04 $ 2.15 (a) In the fourth quarter of 2018, the Company recorded a non-cash deferred tax benefit of $52,915 based on a remeasurement of the Company's net deferred tax liability. See Note 14 to the consolidated financial statements for further details. (b) Pursuant to the enactment of the Tax Reform on December 22, 2017, the Company recorded a non-cash deferred tax benefit of $2,332,677 to remeasure the net deferred tax liability to adjust for the reduction in the corporate federal income tax rate 35% to 21% which was effective on January 1, 2018. The Company’s previously reported statement of cash flows for the three months ended March 31, 2017 reflected distributions to stockholders of $79,617 in cash flows from operating activities. These distributions should have been reflected in cash flows from financing activities.
Cablevision Systems Corporation And Subsidiaries
Selected Quarterly Financial Information
INTERIM FINANCIAL INFORMATION (Unaudited)	INTERIM FINANCIAL INFORMATION (Unaudited) The following is a summary of the Company's selected quarterly financial data: Predecessor 2016: March 31, 2016 April 1 to June 20, 2016 Revenue $ 1,645,890 $ 1,491,714 Operating expenses (1,394,635 ) (1,267,663 ) Operating income $ 251,255 $ 224,051 Net income $ 94,311 $ 69,201 Net loss attributable to noncontrolling interests 66 170 Net income attributable to Cablevision Systems Corporation stockholders $ 94,377 $ 69,371 Basic income per share attributable to Cablevision Systems Corporation stockholders: Income from continuing operations, net of income taxes $ 0.35 $ 0.25 Loss from discontinued operations, net of income taxes $ — $ — Net income $ 0.35 $ 0.25 Diluted income per share attributable to Cablevision Systems Corporation stockholders: Income from continuing operations, net of income taxes $ 0.34 $ 0.25 Loss from discontinued operations, net of income taxes $ — $ — Net income $ 0.34 $ 0.25 Amounts attributable to Cablevision Systems Corporation stockholders: Income from continuing operations, net of income taxes $ 94,377 $ 69,371 Loss from discontinued operations, net of income taxes — — Net income $ 94,377 $ 69,371 Predecessor 2015: March 31, 2015 June 30, 2015 September 30, 2015 December 31, 2015 Total 2015 Revenue $ 1,622,352 $ 1,661,940 $ 1,624,828 $ 1,636,425 $ 6,545,545 Operating expenses (1,398,601 ) (1,417,476 ) (1,441,712 ) (1,439,285 ) (5,697,074 ) Operating income $ 223,751 $ 244,464 $ 183,116 $ 197,140 $ 848,471 Income from continuing operations, net of income taxes $ 54,901 $ 75,676 $ 23,431 $ 33,781 $ 187,789 Income (loss) from discontinued operations, net of income taxes (10,502 ) — (406 ) (1,633 ) (12,541 ) Net income 44,399 75,676 23,025 32,148 175,248 Net loss (income) attributable to noncontrolling interests 234 (81 ) 78 (30 ) 201 Net income attributable to Cablevision Systems Corporation stockholders $ 44,633 $ 75,595 $ 23,103 $ 32,118 $ 175,449 Basic income per share attributable to Cablevision Systems Corporation stockholders: Income from continuing operations, net of income taxes $ 0.21 $ 0.28 $ 0.09 $ 0.12 $ 0.70 Income (loss) from discontinued operations, net of income taxes $ (0.04 ) $ — $ — $ (0.01 ) $ (0.05 ) Net income $ 0.17 $ 0.28 $ 0.09 $ 0.12 $ 0.65 Diluted income per share attributable to Cablevision Systems Corporation stockholders: Income from continuing operations, net of income taxes $ 0.20 $ 0.27 $ 0.08 $ 0.12 $ 0.68 Income (loss) from discontinued operations, net of income taxes $ (0.04 ) $ — $ — $ (0.01 ) $ (0.05 ) Net income $ 0.16 $ 0.27 $ 0.08 $ 0.12 $ 0.63 Amounts attributable to Cablevision Systems Corporation stockholders: Income from continuing operations, net of income taxes $ 55,135 $ 75,595 $ 23,509 $ 33,751 $ 187,990 Income (loss) from discontinued operations, net of income taxes (10,502 ) — (406 ) (1,633 ) (12,541 ) Net income $ 44,633 $ 75,595 $ 23,103 $ 32,118 $ 175,449

CVC - BUSINESS COMBINATION

CVC - BUSINESS COMBINATION	12 Months Ended
	Dec. 31, 2018
Business Acquisition [Line Items]
BUSINESS COMBINATIONS	BUSINESS COMBINATIONS ATS Acquisition As the ATS acquisition discussed in Note 1 is a combination of businesses under common control, the Company combined the results of operations and related assets and liabilities of ATS for all periods since its formation. See Note 4 for the impact of the ATS Acquisition on the Company's consolidated balance sheet and statement of operations as of and for the year ended December 31, 2017. Cablevision Acquisition As discussed in Note 1, the Company completed the Cablevision Acquisition on June 21, 2016 . The acquisition was accounted for as a business combination in accordance with ASC Topic 805. Accordingly, the Company recorded the fair value of the assets and liabilities assumed at the date of acquisition. The following table provides the allocation of the total purchase price of $9,958,323 to the identifiable tangible and intangible assets and liabilities of Cablevision based on their respective fair values. The remaining useful lives represent the period over which acquired tangible and intangible assets with a finite life are being depreciated or amortized. Fair Values Estimated Useful Lives Current assets $ 1,923,071 Accounts receivable 271,305 Property, plant and equipment 4,864,621 2-18 years Goodwill 5,842,172 Indefinite-lived cable television franchises 8,113,575 Indefinite-lived Customer relationships 4,850,000 8 to 18 years Trade names (a) 1,010,000 12 years Amortizable intangible assets 23,296 1-15 years Other non-current assets 748,998 Current liabilities (2,311,201 ) Long-term debt (8,355,386 ) Deferred income taxes. (6,832,773 ) Other non-current liabilities (189,355 ) Total $ 9,958,323 (a) See Note 10 for additional information regarding a change in the remaining estimated useful lives of the Company's trade names. The fair value of customer relationships and cable television franchises were valued using derivations of the "income" approach. The future expected earnings from these assets were discounted to their present value equivalent. Trade names were valued using the relief from royalty method, which is based on the present value of the royalty payments avoided as a result of the company owning the intangible asset. The basis for the valuation methods was the Company’s projections. These projections were based on management’s assumptions including among others, penetration rates for pay television, broadband, and telephony; revenue growth rates; operating margins; and capital expenditures. The assumptions are derived based on the Company’s and its peers’ historical operating performance adjusted for current and expected competitive and economic factors surrounding the cable industry. The discount rates used in the analysis are intended to reflect the risk inherent in the projected future cash flows generated by the respective intangible asset. The value is highly dependent on the achievement of the future financial results contemplated in the projections. The estimates and assumptions made in the valuation are inherently subject to significant uncertainties, many of which are beyond the Company's control, and there is no assurance that these results can be achieved. The primary assumptions for which there is a reasonable possibility of the occurrence of a variation that would have significantly affected the value include the assumptions regarding revenue growth, programming expense growth rates, the amount and timing of capital expenditures and the discount rate utilized. In establishing fair value for the vast majority of the acquired property, plant and equipment, the cost approach was utilized. The cost approach considers the amount required to replace an asset by constructing or purchasing a new asset with similar utility, then adjusts the value in consideration of physical depreciation, and functional and economic obsolescence as of the appraisal date. The cost approach relies on management’s assumptions regarding current material and labor costs required to rebuild and repurchase significant components of property, plant and equipment along with assumptions regarding the age and estimated useful lives of property, plant and equipment. The estimates of expected useful lives take into consideration the effects of contractual relationships, customer attrition, eventual development of new technologies and market competition. Long-term debt assumed was valued using quoted market prices (Level 2). The carrying value of most other assets and liabilities approximated fair value as of the acquisition date. As a result of applying business combination accounting, the Company recorded goodwill, which represented the excess of organization value over amounts assigned to the other identifiable tangible and intangible assets arising from expectations of future operational performance and cash generation. The following table presents the unaudited pro forma revenue and net loss for the period presented as if the Cablevision Acquisition had occurred on January 1, 2016: Year Ended December 31, 2016 Revenue $ 9,154,816 Net loss $ (721,257 ) The pro forma results presented above include the impact of additional amortization expense related to the identifiable intangible assets recorded in connection with the Cablevision Acquisition, additional depreciation expense related to the fair value adjustment to property, plant and equipment and the incremental interest resulting from the issuance of debt to fund the Cablevision Acquisition, net of the reversal of interest and amortization of deferred financing costs related to credit facilities that were repaid on the date of the Cablevision Acquisition and the accretion/amortization of fair value adjustments associated with the long-term debt acquired. Other Acquisitions In connection with certain acquisitions completed in 2018, the Company recorded goodwill of $7,608 which represents the excess of the estimated purchase price of approximately $9,945 (based on current probability of contingent consideration) over the net book value of assets acquired. In connection with certain acquisitions completed in the first and fourth quarters of 2017, the Company recorded amortizable intangibles of $45,000 relating to customer relationships and $9,400 relating to other amortizable intangibles. The Company recorded goodwill of $23,936 , which represents the excess of the estimated purchase price of approximately $80,000 over the net book value of assets acquired.
Cablevision Systems Corporation And Subsidiaries
Business Acquisition [Line Items]
BUSINESS COMBINATIONS	BUSINESS COMBINATION As discussed in Note 1, Cablevision completed the Merger on June 21, 2016. The Merger was accounted for as a business combination in accordance with ASC Topic 805. The following table provides the preliminary allocation of the total purchase price of $9,958,323 to the identifiable tangible and intangible assets and liabilities of Cablevision based on preliminary fair value information currently available, which is subject to change within the measurement period (up to one year from the acquisition date). Estimates of Fair Values (As of December 31, 2016) Estimated Useful Lives Current assets $ 1,923,071 Accounts receivable 271,305 Property, plant and equipment 4,864,621 2-18 years Goodwill 5,838,959 Indefinite-lived cable television franchises 8,113,575 Indefinite-lived Customer relationships 4,850,000 8 to 18 years Trade names 1,010,000 12 years Amortizable intangible assets 23,296 1-15 years Other non-current assets 748,998 Current liabilities (2,305,954 ) Long-term debt (8,355,386 ) Deferred income taxes. (6,834,807 ) Other non-current liabilities (189,355 ) Total $ 9,958,323 The fair value of identified intangible assets was estimated using derivations of the "income" approach. Customer relationships and cable television franchises were valued using the multiple period excess earnings method (“MPEEM”) approach. The MPEEM approach quantifies the expected earnings of an asset by isolating earnings attributable to the asset from the overall business enterprise earnings and then removing a charge for those assets that contribute to the generation of the isolated earnings. The future expected earnings are discounted to their present value equivalent. Trade names were valued using the relief from royalty method, which is based on the present value of the royalty payments avoided as a result of the company owning the intangible asset. The basis for the valuation methods was the Company’s projections. These projections were based on management’s assumptions including among others, penetration rates for video, high speed data, and voice; revenue growth rates; operating margins; and capital expenditures. The assumptions are derived based on the Company’s and its peers’ historical operating performance adjusted for current and expected competitive and economic factors surrounding the cable industry. The discount rates used in the analysis are intended to reflect the risk inherent in the projected future cash flows generated by the respective intangible asset. The value is highly dependent on the achievement of the future financial results contemplated in the projections. The estimates and assumptions made in the valuation are inherently subject to significant uncertainties, many of which are beyond the Company's control, and there is no assurance that these results can be achieved. The primary assumptions for which there is a reasonable possibility of the occurrence of a variation that would have significantly affected the value include the assumptions regarding revenue growth, programming expense growth rates, the amount and timing of capital expenditures and the discount rate utilized. In establishing fair value for the vast majority of the Company’s property, plant and equipment, the cost approach was utilized. The cost approach considers the amount required to replace an asset by constructing or purchasing a new asset with similar utility, then adjusts the value in consideration of physical depreciation, and functional and economic obsolescence as of the appraisal date. The cost approach relies on management’s assumptions regarding current material and labor costs required to rebuild and repurchase significant components of our property, plant and equipment along with assumptions regarding the age and estimated useful lives of our property, plant and equipment. The estimates of expected useful lives take into consideration the effects of contractual relationships, customer attrition, eventual development of new technologies and market competition. As a result of applying business combination accounting, the Company recorded goodwill, which represented the excess of organization value over amounts assigned to the other identifiable tangible and intangible assets arising from expectations of future operational performance and cash generation. The following table sets forth the estimated amortization expense on the intangible assets recorded in the connection with the Merger for the years ending December 31: Estimated amortization expense Year Ending December 31, 2017 $ 701,908 Year Ending December 31, 2018 655,409 Year Ending December 31, 2019 609,245 Year Ending December 31, 2020 562,613 Year Ending December 31, 2021 515,430 The unaudited pro forma revenue, loss from continuing operations and net loss for the years ended December 31, 2015, as if the Merger had occurred on January 1, 2015, are as follows: Revenue $ 6,545,545 Loss from continuing operations $ (740,115 ) Net loss $ (752,656 ) The pro forma results presented above include the impact of additional interest expense related to the debt issued to finance the Merger. The pro forma results also reflect additional amortization expense related to the identifiable intangible assets recorded in connection with the Merger and additional depreciation expense related to the fair value adjustment to property, plant and equipment.

SUMMARY OF SIGNIFICANT ACCOUN_2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2018
Entity Information [Line Items]
Revenue Recognition	Revenue Recognition Residential Services The Company derives revenue through monthly charges to residential customers of its pay television, broadband, and telephony services, including installation services. In addition, the Company derives revenue from digital video recorder ("DVR"), video-on-demand ("VOD"), pay-per-view, and home shopping commissions which are reflected in "Residential pay TV" revenues. The Company recognizes pay television, broadband, and telephony revenues as the services are provided to a customer on a monthly basis. Revenue from the sale of bundled services at a discounted rate is allocated to each product based on the standalone selling price of each performance obligation within the bundled offer. The standalone selling price requires judgment and is typically determined based on the current prices at which the separate services are sold by the Company. Installation revenue for the Company's residential services is deferred and recognized over the benefit period, which is estimated to be less than one year. The estimated benefit period takes into account both quantitative and qualitative factors including the significance of average installation fees to total recurring revenue per customer. 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 years ended December 31, 2018 , 2017 and 2016 , the amount of franchise fees and certain other taxes and fees included as a component of revenue aggregated $257,467 , $259,075 and $154,732 , respectively. Business and Wholesale Services The Company derives revenue from the sale of products and services to both large enterprise and small and medium-sized business ("SMB") customers, including broadband, telephony, networking, and pay television services reflected in "Business services and wholesale" revenues. The Company's business services also include Ethernet, data transport, and IP-based virtual private networks. The Company also provides managed services to businesses, including hosted telephony services (cloud based SIP-based private branch exchange), managed Wi-Fi, managed desktop and server backup and managed collaboration services including audio and web conferencing. The Company also offers fiber-to-the-tower services to wireless carriers for cell tower backhaul and enable wireline communications service providers to connect to customers that their own networks do not reach. The Company recognizes revenues for these services as the services are provided to a customer on a monthly basis. Substantially all of our SMB customers are billed monthly and large enterprise customers are billed in accordance with the terms of their contracts which is typically also on a monthly basis. Contracts with large enterprise customers typically range from three to five years. Installation revenue related to our large enterprise customers is deferred and recognized over the average contract term. Installation revenue related to SMB customers is deferred and recognized over the benefit period, which is less than a year. The estimated benefit period for SMB customers takes into account both quantitative and qualitative factors including the significance of average installation fees to total recurring revenue per customer. Advertising As part of the agreements under which the Company acquires pay television programming, the Company typically receives an allocation of scheduled advertising time during such programming into which the Company's cable systems can insert commercials. In several of the markets in which the Company operates, it has entered into agreements commonly referred to as interconnects with other cable operators to jointly sell local advertising. In some of these markets, the Company represents the advertising sales efforts of other cable operators; in other markets, other cable operators represent the Company. Advertising revenues are recognized when commercials are aired. Arrangements in which the Company controls the sale of advertising and acts as the principal to the transaction, the Company recognizes revenue earned from the advertising customer on a gross basis and the amount remitted to the distributor as an operating expense. Arrangements in which the Company does not control the sale of advertising and acts as an agent to the transaction, the Company recognizes revenue net of any fee remitted to the distributor. The Company's advanced advertising businesses provide data-driven, audience-based advertising solutions using advanced analytics tools that provide granular measurement of consumer groups, accurate hyper-local ratings and other insights into target audience behavior not available through traditional sample-based measurement services. Revenue earned from the Company's advanced advertising businesses are recognized when services are provided. Other Revenues derived from other sources are recognized when services are provided or events occur. Contract Assets Incremental costs incurred in obtaining a contract with a customer are deferred and recorded as a contract asset if the period of benefit is expected to be greater than one year. Sales commissions for enterprise and certain SMB customers are deferred and amortized over the average contract term. For sales commission expenses related to residential and SMB customers with a term of one year or less, the Company is utilizing the practical expedient and is recognizing the costs when incurred. Cost of fulfilling a contract with a customer are deferred and recorded as a contract asset if they generate or enhance resources of the Company that will be used in satisfying future performance obligations and are expected to be recovered. Installation costs related to residential and SMB customers that are not capitalized as part of the initial deployment of new customer premise equipment are expensed as incurred pursuant to industry-specific guidance. The following table provides information about contracts assets and contract liabilities related to contracts with customers: December 31, 2018 2017 Contract assets (a) $ 26,405 $ 24,329 Deferred revenue (b) 190,056 117,679 (a) Contract assets include primarily sales commissions for enterprise customers that are deferred and amortized over the average contract term. (b) Deferred revenue represents payments received from customers for services that have yet to be provided and installation revenue which is deferred and recognized over the benefit period. The majority of the Company's deferred revenue represents payments for services for up to one month in advance from residential and SMB customers which is realized within the following month as services are performed. 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 to five years, and services may only be terminated in accordance with the contractual terms.
Multiple Element Transactions	Multiple-Element Transactions In the normal course of business, the Company may enter into multiple-element transactions where it is simultaneously both a customer and a vendor with the same counterparty or in which it purchases multiple products and/or services, or settles outstanding items contemporaneously with the purchase of a product or service, from a single counterparty. The Company's policy for accounting for each transaction negotiated contemporaneously is to record each deliverable of the transaction based on its best estimate of selling price in a manner consistent with that used to determine the price to sell each deliverable on a standalone basis. In determining the fair value of the respective deliverable, the Company will utilize quoted market prices (as available), historical transactions or comparable transactions.
Technical and Operating Expenses and Programming Costs	Technical and Operating Expenses Costs of revenue related to sales of services are classified as "programming and other direct costs" in the accompanying consolidated statements of operations. Programming Costs Programming expenses related to the Company's pay television service represent fees paid to programming distributors to license the programming distributed to customers. This programming is acquired generally under multi-year distribution agreements, with rates usually based on the number of customers that receive the programming. If there are periods when an existing distribution agreement has expired and the parties have not finalized negotiations of either a renewal of that agreement or a new agreement for certain periods of time, the Company continues to carry and pay for these services until execution of definitive replacement agreements or renewals. The amount of programming expense recorded during the interim period is based on the Company's estimates of the ultimate contractual agreement expected to be reached, which is based on several factors, including previous contractual rates, customary rate increases and the current status of negotiations. Such estimates are adjusted as negotiations progress until new programming terms are finalized. In addition, the Company has received, or may receive, incentives from programming distributors for carriage of the distributors' programming. The Company generally recognizes these incentives as a reduction of programming costs in "programming and other direct costs", generally over the term of the distribution agreement.
Advertising Expenses	Advertising Expenses Advertising costs are charged to expense when incurred and are reflected in "other operating expenses" in the accompanying consolidated statements of operations.
Share-based Compensation	Share-Based Compensation Share-based compensation expense is based on the fair value of the portion of share-based payment awards that are ultimately expected to vest. Share-based compensation cost relates to awards of units in a carried unit plan and options. For carried interest units, the Company measures share-based compensation cost at the grant date fair value and recognizes the expense over the requisite service period or when it is probable any related performance condition will be met. For carried interest units with graded vesting requirement, compensation cost is recognized on an accelerated method under the graded vesting method over the requisite service period for the carried interest unit. Carried interest units that vest entirely at the end of the vesting requirement are expensed on a straight-line basis. The Company estimated the fair value of carried interest units using an option pricing model. Key inputs that were used in applying the option pricing method were total equity value, equity volatility, risk free rate and time to liquidity event. The estimate of total equity value was determined using a combination of the income approach, which incorporated cash flow projections that were discounted at an appropriate rate, and the market approach, which involved applying a market multiple to the Company’s projected operating results. The Company estimated volatility based on the historical equity volatility of comparable publicly-traded companies. Subsequent to the IPO, such subjective valuations and estimates were no longer necessary as the Company relied on the market price of the Company’s common stock to determine the fair value of share-based compensation awards. See Note 15 to the consolidated financial statements for additional information about our share-based compensation. For stock option awards, the Company recognizes compensation expense based on the estimated grant date fair value using the Black-Scholes valuation model and amortizes the fair value to share-based compensation expense over the requisite service period.
Income Taxes	Income Taxes The Company's provision for income taxes is based on current period income, changes in deferred tax assets and liabilities and changes in estimates with regard to uncertain tax positions. Deferred tax assets are subject to an ongoing assessment of realizability. The Company provides deferred taxes for the outside basis difference of its investment in partnerships.
Cash and Cash Equivalents	Cash and Cash Equivalents The Company's cash investments are placed with money market funds and financial institutions that are investment grade as rated by S&P Global Ratings and Moody's Investors Service. The Company selects money market funds that predominantly invest in marketable, direct obligations issued or guaranteed by the United States government or its agencies, commercial paper, fully collateralized repurchase agreements, certificates of deposit, and time deposits. The Company considers the balance of its investment in funds that substantially hold securities that mature within three months or less from the date the fund purchases these securities to be cash equivalents. The carrying amount of cash and cash equivalents either approximates fair value due to the short-term maturity of these instruments or are at fair value.
Accounts Receivable	Accounts Receivable Accounts receivable are recorded at net realizable value. The Company periodically assesses the adequacy of valuation allowances for uncollectible accounts receivable by evaluating the collectability of outstanding receivables and general factors such as historical collection experience, length of time individual receivables are past due, and the economic and competitive environment.
Investments	Investments Investment securities and investment securities pledged as collateral are classified as trading securities and are stated at fair value with realized and unrealized holding gains and losses included in the consolidated statements of operations.
Long-Lived Assets and Amortizable Intangible Assets	Long-Lived Assets and Amortizable Intangible Assets Property, plant and equipment, including construction materials, are carried at cost, and include all direct costs and certain indirect costs associated with the construction of cable systems, and the costs of new equipment installations. Equipment under capital leases is recorded at the present value of the total minimum lease payments. Depreciation on equipment is calculated on the straight-line basis over the estimated useful lives of the assets or, with respect to equipment under capital leases and leasehold improvements, amortized over the shorter of the lease term or the assets' useful lives and reported in depreciation and amortization (including impairments) in the consolidated statements of operations. The Company reviews its long-lived assets (property, plant and equipment, and intangible assets subject to amortization that arose from acquisitions) for impairment whenever events or circumstances indicate that the carrying amount of an asset may not be recoverable. If the sum of the expected cash flows, undiscounted and without interest, is less than the carrying amount of the asset, an impairment loss is recognized as the amount by which the carrying amount of the asset exceeds its fair value
Internal Use Software	The Company capitalizes certain internal and external costs incurred to acquire or develop internal-use software. Capitalized software costs are amortized over the estimated useful life of the software and reported in depreciation and amortization.
Amortizable Intangible Assets	Customer relationships, trade names and other intangibles established in connection with acquisitions that are finite-lived are amortized in a manner that reflects the pattern in which the projected net cash inflows to the Company are expected to occur, such as the sum of the years' digits method, or when such pattern does not exist, using the straight-line basis over their respective estimated useful lives.
Asset Impairment	The Company reviews its long-lived assets (property, plant and equipment, and intangible assets subject to amortization that arose from acquisitions) for impairment whenever events or circumstances indicate that the carrying amount of an asset may not be recoverable. If the sum of the expected cash flows, undiscounted and without interest, is less than the carrying amount of the asset, an impairment loss is recognized as the amount by which the carrying amount of the asset exceeds its fair value.
Goodwill and Indefinite-Lived Intangible Assets	Goodwill and Indefinite-Lived Intangible Assets Goodwill and the value of franchises acquired in purchase business combinations which have indefinite useful lives are not amortized. Rather, such assets are tested for impairment annually or upon the occurrence of a triggering event. The Company assesses qualitative factors for its reporting units that carry goodwill. If the qualitative assessment results in a conclusion that it is more likely than not that the fair value of a reporting unit exceeds the carrying value, then no further testing is performed for that reporting unit. When the qualitative assessment is not used, or if the qualitative assessment is not conclusive and it is necessary to calculate the fair value of a reporting unit, then the impairment analysis for goodwill is performed at the reporting unit level using a two-step approach. The first step of the goodwill impairment test is used to identify potential impairment by comparing the fair value of the reporting unit with its carrying amount, including goodwill utilizing an enterprise-value based premise approach. If the carrying amount of the reporting unit exceeds its fair value, the second step of the goodwill impairment test is performed to measure the amount of goodwill impairment loss, if any. The second step of the goodwill impairment test compares the implied fair value of the reporting unit's goodwill with the carrying amount of that goodwill. If the carrying amount of the reporting unit's goodwill exceeds the implied fair value of that goodwill, an impairment loss is recognized in an amount equal to that excess. The implied fair value of goodwill is determined in the same manner as the amount of goodwill which would be recognized in a business combination. The Company assesses qualitative factors to determine whether it is necessary to perform the one-step quantitative identifiable indefinite-lived intangible assets impairment test. This quantitative test is required only if the Company concludes that it is more likely than not that a unit of accounting’s fair value is less than its carrying amount. When the qualitative assessment is not used, or if the qualitative assessment is not conclusive, the impairment test for other intangible assets not subject to amortization requires a comparison of the fair value of the intangible asset with its carrying value. If the carrying value of the indefinite-lived intangible asset exceeds its fair value, an impairment loss is recognized in an amount equal to that excess.
Deferred Financing Costs	Deferred Financing Costs Deferred financing costs are being amortized to interest expense using the effective interest method over the terms of the related debt.
Derivative Financial Instruments	Derivative Financial Instruments The Company accounts for derivative financial instruments as either assets or liabilities measured at fair value. The Company uses derivative instruments to manage its exposure to market risks from changes in certain equity prices and interest rates and does not hold or issue derivative instruments for speculative or trading purposes. These derivative instruments are not designated as hedges, and changes in the fair values of these derivatives are recognized in the consolidated statements of operations as gain (loss) on derivative contracts or gain (loss) on interest rate swap contracts.
Commitments and Contingencies	Commitments and Contingencies Liabilities for loss contingencies arising from claims, assessments, litigation, fines and penalties and other sources are recorded when the Company believes it is probable that a liability has been incurred and the amount of the contingency can be reasonably estimated.
Foreign Currency	Foreign Currency Certain of the Company's i24NEWS subsidiaries are located outside the United States. The functional currency for these subsidiaries is determined based on the primary economic environment in which the subsidiary operates. Revenues and expenses for these subsidiaries are translated into U.S. dollars using rates that approximate those in effect during the period while the assets and liabilities are translated into U.S. dollars using exchange rates in effect at the end of each period. The resulting gains and losses from these translations are recognized in cumulative translation adjustment included in accumulated other comprehensive loss in stockholders’ equity on the consolidated balance sheets.
Dividends and Distributions	Dividends and Distributions The Company may pay dividends on its capital stock only from net profits and surplus as determined under Delaware law. If dividends are paid on the Altice USA common stock, holders of the Altice USA Class A common stock and Altice USA Class B common stock are entitled to receive dividends, and other distributions in cash, stock or property, equally on a per share basis, except that stock dividends with respect to Altice USA Class A common stock may be paid only with shares of Altice USA Class A common stock and stock dividends with respect to Altice USA Class B common stock may be paid only with shares of Altice USA Class B common stock. The Company's indentures restrict the amount of dividends and distributions in respect of any equity interest that can be made.
Net Income (Loss) 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. Diluted net loss per common share attributable to Altice USA stockholders excludes the effects of common stock equivalents as they are anti-dilutive. The weighted average number of shares used to compute basic and diluted net income (loss) per share reflect the retroactive impact of the organizational transactions, discussed in Note 1, that occurred prior to the Company's IPO.
Concentrations of Credit Risk	Concentrations of Credit Risk Financial instruments that may potentially subject the Company to a concentration of credit risk consist primarily of cash and cash equivalents and trade account receivables. The Company monitors the financial institutions and money market funds where it invests its cash and cash equivalents with diversification among counterparties to mitigate exposure to any single financial institution. The Company's emphasis is primarily on safety of principal and liquidity and secondarily on maximizing the yield on its investments. Management believes that no significant concentration of credit risk exists with respect to its cash and cash equivalents because of its assessment of the creditworthiness and financial viability of the respective financial institutions.
Use of Estimates in Preparation of Financial Statements	Use of Estimates in Preparation of Financial Statements The preparation of financial statements in conformity with U.S. generally accepted accounting principles ("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 revenues and expenses during the reporting period. Actual results could differ from those estimates. See Note 13 for a discussion of fair value estimates.
Reclassifications	Reclassifications Certain reclassifications have been made to the 2017 and 2016 financial statements to conform to the 2018 presentation.
Recently Adopted Accounting Pronouncements and Recently Issued But Not Yet Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements In February 2018, the FASB issued ASU No. 2018-02, Income Statement-Reporting Comprehensive Income (Topic 220) Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. The primary provision of ASU No. 2018-02 allows for the reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act. ASU No. 2018-02 also requires certain disclosures about stranded tax effects. ASU No. 2018-02 is effective for the Company on January 1, 2019, with early adoption permitted and will be applied either in the period of adoption or retrospectively to each period (or periods) in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act is recognized. The Company elected to adopt ASU No. 2018-02 during the first quarter of 2018. The adoption resulted in the reclassification of stranded tax amounts of $2,163 associated with net unrecognized losses from the Company's pension plans from accumulated other comprehensive loss to retained earnings. In May 2017, the FASB issued ASU No. 2017-09, Compensation-Stock Compensation (Topic 718). ASU No. 2017-09 provides clarity and guidance on which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. ASU No. 2017-09 was adopted by the Company on January 1, 2018 and it had no impact to the Company's consolidated financial statements. In March 2017, the FASB issued ASU No. 2017-07, Compensation-Retirement Benefits (Topic 715). ASU No. 2017-07 requires that an employer disaggregate the service cost component from the other components of net benefit cost. It also provides guidance on how to present the service cost component and the other components of net benefit cost in the income statement and what component of net benefit cost is eligible for capitalization. ASU No. 2017‑07 was adopted by the Company on January 1, 2018 and was applied retrospectively. As a result of the adoption, the Company reclassified the non-service cost components of the Company's pension expense for the year ended December 2017and 2016 from other operating expenses to other income (expense), net. The Company elected to apply the practical expedient which allowed it to reclassify amounts disclosed previously in the benefits plan note as the basis for applying retrospective presentation for comparative periods, as the Company determined it was impracticable to disaggregate the cost components for amounts capitalized and amortized in those periods. See Note 4 for information on the impact of the adoption of ASU No. 2017-07. In January 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805), Clarifying the Definition of a Business, which amends Topic 805 to interpret the definition of a business by adding guidance to assist in evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The Company adopted the new guidance on January 1, 2018 and it had no impact to the Company's consolidated financial statements. In December 2016, the FASB issued ASU No. 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers, in order to clarify the Codification and to correct any unintended application of the guidance. The amendments in this update affected the guidance in ASC 606. ASC 606 was adopted by the Company on January 1, 2018 on a full retrospective basis, which required the Company to reflect the impact of the updated guidance for all periods presented. The adoption of ASC 606 did not have a material impact on the Company’s financial position or results of operations. See Note 4 for information on the impact of the adoption of ASC 606. In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash, which requires that the statement of cash flows disclose the change during the period in the total of cash, cash equivalents, restricted cash and restricted cash equivalents. Restricted cash should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of period total amounts shown on the statement of cash flows. ASU No. 2016-18 provides specific guidance on the presentation of restricted cash in the statement of cash flows. ASU No. 2016-18 was adopted by the Company on January 1, 2018 and was applied retrospectively for all periods presented. In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments which clarifies how entities should classify certain cash receipts and cash payments on the statement of cash flows. ASU No. 2016-15 also clarifies how the predominance principle should be applied when cash receipts and cash payments have aspects of more than one class of cash flows. The Company adopted the new guidance on January 1, 2018 and it had no impact to the Company's consolidated financial statements. In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10), Recognition and Measurement of Financial Assets and Financial Liabilities. ASU No. 2016-01 modifies how entities measure certain equity investments and also modifies the recognition of changes in the fair value of financial liabilities measured under the fair value option. Entities will be required to measure equity investments that do not result in consolidation and are not accounted for under the equity method at fair value and recognize any changes in fair value in net income. For financial liabilities measured using the fair value option, entities will be required to record changes in fair value caused by a change in instrument-specific credit risk (own credit risk) separately in other comprehensive income. ASU No. 2016-01 was adopted by the Company on January 1, 2018 and it had no impact to the Company's consolidated financial statements. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers ("ASC 606"), requiring an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. ASC 606 replaced most existing revenue recognition guidance in GAAP (See Note 4). Recently Issued But Not Yet Adopted Accounting Pronouncements In August 2018, the FASB issued ASU No. 2018-14, Changes to the Disclosure Requirements for Defined Benefit Plans, which amends ASC 715 to clarify certain disclosure requirements related to defined benefit pension and other postretirement plans. ASU 2018-14 becomes effective for the Company on January 1, 2022, although early adoption is permitted. The Company does not expect the adoption of ASU 2017-14 to have a material impact on its consolidated financial statements. Also in August 2018, the FASB issued ASU No. 2018-15, Customer’s Accounting for Implementation Costs in a Cloud Computing Arrangement That Is a Service Contract, which requires upfront implementation costs incurred in a cloud computing arrangement (or hosting arrangement) that is a service contract to be amortized to hosting expense over the term of the arrangement, beginning when the module or component of the hosting arrangement is ready for its intended use. ASU No. 2018-14 becomes effective for the Company on January 1, 2020, although early adoption is permitted. The Company is currently in the process of evaluating the impact that the adoption of ASU No. 2018-15 will have on its consolidated financial statements. In January 2017, the FASB issued ASU No. 2017-04, Intangibles-Goodwill and Other (Topic 350). ASU No. 2017-04 simplifies the subsequent measurement of goodwill by removing the second step of the two‑step impairment test. The amendment requires an entity to perform its annual, or interim goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity still has the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary. ASU No. 2017-04 becomes effective for the Company on January 1, 2020 with early adoption permitted and will be applied prospectively. In February 2016, the FASB issued ASU No. 2016-02, Leases, which increases transparency and comparability by recognizing a lessee’s rights and obligations resulting from leases by recording them on the balance sheet as lease assets and lease liabilities. The new guidance became effective for the Company on January 1, 2019. The Company will adopt the new guidance using the modified retrospective approach with a cumulative-effect adjustment recorded at the beginning of the period of adoption. The Company will elect the package of practical expedients permitted within the standard, which allow an entity to forgo reassessing (1) whether a contract contains a lease, (2) classification of leases, and (3) whether capitalized costs associated with a lease meet the definition of initial direct costs. Also, the Company will elect the expedient allowing an entity to use hindsight to determine the lease term and impairment of right of-use assets and the expedient related to land easements which allows the Company not to retrospectively treat land easements as leases; however, must apply lease accounting prospectively to land easements if they meet the definition of a lease. While the Company is continuing to assess the impacts of ASU No. 2016-02, it estimates that the adoption of ASU No. 2016-02 will result in the recognition of right-of-use assets and lease liabilities for operating leases of approximately 1% of its total assets on its consolidated balance sheet, with no material impact to its consolidated statements of operations.
Cablevision Systems Corporation And Subsidiaries
Entity Information [Line Items]
Revenue Recognition	Revenue Recognition The Company recognizes video, high-speed data, and voice services revenues as the services are provided to customers. Revenue received from customers who purchase bundled services at a discounted rate is allocated to each product in a pro-rata manner based on the individual product’s selling price (generally, the price at which the product is regularly sold on a standalone basis). Installation revenue for the Company's video, consumer high-speed data and VoIP services is recognized as installations are completed, as direct selling costs have exceeded this revenue in all periods reported. Advertising revenues are recognized when commercials are aired. Revenues derived from other sources are recognized when services are provided or events occur.
Multiple Element Transactions	Multiple-Element Transactions In the normal course of business, the Company may enter into multiple-element transactions where it is simultaneously both a customer and a vendor with the same counterparty or in which it purchases multiple products and/or services, or settles outstanding items contemporaneous with the purchase of a product or service from a single counterparty. The Company's policy for accounting for each transaction negotiated contemporaneously is to record each deliverable of the transaction based on its best estimate of selling price in a manner consistent with that used to determine the price to sell each deliverable on a standalone basis. In determining the fair value of the respective deliverable, the Company will utilize quoted market prices (as available), historical transactions or comparable transactions.
Technical and Operating Expenses and Programming Costs	Technical and Operating Expenses Costs of revenue related to sales of services are classified as "programming and other direct costs" in the accompanying consolidated statements of operations.
Advertising Expenses	Advertising Expenses Advertising costs are charged to expense when incurred and are reflected in "other operating expenses" in the accompanying consolidated statements of operations.
Share-based Compensation	Share-Based Compensation Share-based compensation expense is based on the fair value of the portion of share-based payment awards that are ultimately expected to vest. For share-based compensation awards that can be settled in cash, the Company recognizes compensation expense based on the estimated fair value of the award at each reporting period. For options and performance based option awards, Cablevision recognized compensation expense based on the estimated grant date fair value using the Black-Scholes valuation model. For options not subject to performance based vesting conditions, Cablevision recognized the compensation expense using a straight-line amortization method. For options subject to performance based vesting conditions, Cablevision recognized compensation expense based on the probable outcome of the performance criteria over the requisite service period for each tranche of awards. For restricted shares, Cablevision recognized compensation expense using a straight-line amortization method based on the grant date price of CNYG Class A common stock over the vesting period. For restricted stock units granted to non-employee director which vested 100% on the date of grant, compensation expense was recognized on the date of grant based on the grant date price of CNYG Class A common stock. For performance based restricted stock units ("PSUs") which cliff vested in three years, Cablevision recognized compensation expense on a straight-line basis over the vesting period based on the estimated number of shares of CNYG Class A common stock expected to be issued.
Income Taxes	Income Taxes The Company's provision for income taxes is based on current period income, changes in deferred tax assets and liabilities and changes in estimates with regard to uncertain tax positions. Deferred tax assets are subject to an ongoing assessment of realizability. The Company provides deferred taxes for the outside basis difference of its investment in partnerships. In the second quarter of 2016, the Company changed its accounting policy on a prospective basis to present interest expense relating to uncertain tax position as additional interest expense.
Cash and Cash Equivalents	Cash and Cash Equivalents The Company's cash investments are placed with money market funds and financial institutions that are investment grade as rated by Standard & Poor's and Moody's Investors Service. The Company selects money market funds that predominantly invest in marketable, direct obligations issued or guaranteed by the United States government or its agencies, commercial paper, fully collateralized repurchase agreements, certificates of deposit, and time deposits. The Company considers the balance of its investment in funds that substantially hold securities that mature within three months or less from the date the fund purchases these securities to be cash equivalents. The carrying amount of cash and cash equivalents either approximates fair value due to the short-term maturity of these instruments or are at fair value.
Accounts Receivable	Accounts Receivable Accounts receivable are recorded at net realizable value. The Company periodically assesses the adequacy of valuation allowances for uncollectible accounts receivable by evaluating the collectability of outstanding receivables and general factors such as historical collection experience, length of time individual receivables are past due, and the economic and competitive environment.
Investments	Investments Investment securities and investment securities pledged as collateral are classified as trading securities and are stated at fair value with realized and unrealized holding gains and losses included in net income.
Long-Lived Assets and Amortizable Intangible Assets	Long-Lived Assets and Amortizable Intangible Assets Property, plant and equipment, including construction materials, are carried at cost, and include all direct costs and certain indirect costs associated with the construction of cable systems, and the costs of new equipment installations. Equipment under capital leases is recorded at the present value of the total minimum lease payments. Depreciation on equipment is calculated on the straight-line basis over the estimated useful lives of the assets or, with respect to equipment under capital leases and leasehold improvements, amortized over the shorter of the lease term or the assets' useful lives and reported in depreciation and amortization (including impairments) in the consolidated statements of operations. The Company capitalizes certain internal and external costs incurred to acquire or develop internal-use software. Capitalized software costs are amortized over the estimated useful life of the software and reported in depreciation and amortization (including impairments). Customer relationships, trade names and other intangibles established in connection with acquisitions that are finite-lived are amortized in a manner that reflects the pattern in which the projected net cash inflows to the Company are expected to occur, such as the sum of the years' digits method, or when such pattern does not exist, using the straight-line basis over their respective estimated useful lives. The Company reviews its long-lived assets (property, plant and equipment, and intangible assets subject to amortization that arose from acquisitions) for impairment whenever events or circumstances indicate that the carrying amount of an asset may not be recoverable. If the sum of the expected cash flows, undiscounted and without interest, is less than the carrying amount of the asset, an impairment loss is recognized as the amount by which the carrying amount of the asset exceeds its fair value.
Internal Use Software	The Company capitalizes certain internal and external costs incurred to acquire or develop internal-use software. Capitalized software costs are amortized over the estimated useful life of the software and reported in depreciation and amortization (including impairments).
Amortizable Intangible Assets	Customer relationships, trade names and other intangibles established in connection with acquisitions that are finite-lived are amortized in a manner that reflects the pattern in which the projected net cash inflows to the Company are expected to occur, such as the sum of the years' digits method, or when such pattern does not exist, using the straight-line basis over their respective estimated useful lives.
Asset Impairment	The Company reviews its long-lived assets (property, plant and equipment, and intangible assets subject to amortization that arose from acquisitions) for impairment whenever events or circumstances indicate that the carrying amount of an asset may not be recoverable. If the sum of the expected cash flows, undiscounted and without interest, is less than the carrying amount of the asset, an impairment loss is recognized as the amount by which the carrying amount of the asset exceeds its fair value.
Goodwill and Indefinite-Lived Intangible Assets	Goodwill and Indefinite-Lived Intangible Assets Goodwill and the value of franchises, trademarks, and certain other intangibles acquired in purchase business combinations which have indefinite useful lives are not amortized. Rather, such assets are tested for impairment annually or upon the occurrence of a triggering event. The Company assesses qualitative factors for its reporting units that carry goodwill. If the qualitative assessment results in a conclusion that it is more likely than not that the fair value of a reporting unit exceeds the carrying value, then no further testing is performed for that reporting unit. When the qualitative assessment is not used, or if the qualitative assessment is not conclusive and it is necessary to calculate the fair value of a reporting unit, then the impairment analysis for goodwill is performed at the reporting unit level using a two-step approach. The first step of the goodwill impairment test is used to identify potential impairment by comparing the fair value of the reporting unit with its carrying amount, including goodwill utilizing an enterprise-value based premise approach. If the carrying amount of the reporting unit exceeds its fair value, the second step of the goodwill impairment test is performed to measure the amount of goodwill impairment loss, if any. The second step of the goodwill impairment test compares the implied fair value of the reporting unit's goodwill with the carrying amount of that goodwill. If the carrying amount of the reporting unit's goodwill exceeds the implied fair value of that goodwill, an impairment loss is recognized in an amount equal to that excess. The implied fair value of goodwill is determined in the same manner as the amount of goodwill which would be recognized in a business combination. The Company assesses qualitative factors to determine whether it is necessary to perform the one-step quantitative identifiable indefinite-lived intangible assets impairment test. This quantitative test is required only if the Company concludes that it is more likely than not that a unit of accounting’s fair value is less than its carrying amount. When the qualitative assessment is not used, or if the qualitative assessment is not conclusive, the impairment test for other intangible assets not subject to amortization requires a comparison of the fair value of the intangible asset with its carrying value. If the carrying value of the indefinite-lived intangible asset exceeds its fair value, an impairment loss is recognized in an amount equal to that excess.
Deferred Financing Costs	Deferred Financing Costs Deferred financing costs are being amortized to interest expense using the effective interest method over the terms of the related debt.
Derivative Financial Instruments	Derivative Financial Instruments The Company accounts for derivative financial instruments as either assets or liabilities measured at fair value. The Company uses derivative instruments to manage its exposure to market risks from changes in certain equity prices and interest rates and does not hold or issue derivative instruments for speculative or trading purposes. These derivative instruments are not designated as hedges, and changes in the fair values of these derivatives are recognized in the statements of income as gains (losses) on derivative contracts.
Commitments and Contingencies	Commitments and Contingencies Liabilities for loss contingencies arising from claims, assessments, litigation, fines and penalties and other sources are recorded when the Company believes it is probable that a liability has been incurred and the amount of the contingency can be reasonably estimated.
Dividends and Distributions	Dividends Pursuant to the terms of the Merger Agreement, Cablevision was not permitted to declare and pay dividends or repurchase stock, in each case, without the prior written consent of Altice. In accordance with these terms, Cablevision did not declare dividends during the period January 1, 2016 through June 20, 2016.
Net Income (Loss) Per Share	Income (Loss) Per Share Basic income per common share attributable to Cablevision stockholders was computed by dividing net income attributable to Cablevision stockholders by the weighted average number of common shares outstanding during the period. Diluted income per common share attributable to Cablevision stockholders reflected the dilutive effects of stock options, restricted stock and restricted stock units. For such awards that were performance based, the diluted effect was reflected upon the achievement of the performance criteria.
Concentrations of Credit Risk	Concentrations of Credit Risk Financial instruments that may potentially subject the Company to a concentration of credit risk consist primarily of cash and cash equivalents and trade account receivables. The Company monitors the financial institutions and money market funds where it invests its cash and cash equivalents with diversification among counterparties to mitigate exposure to any single financial institution. The Company's emphasis is primarily on safety of principal and liquidity and secondarily on maximizing the yield on its investments. Management believes that no significant concentration of credit risk exists with respect to its cash and cash equivalents balances because of its assessment of the creditworthiness and financial viability of the respective financial institutions. The Company did not have a single customer that represented 10% or more of its consolidated revenues for the period January 1, 2016 through June 20, 2016 and the year ended December 31, 2015, or 10% or more of its consolidated net trade receivables at December 31, 2015.
Use of Estimates in Preparation of Financial Statements	Use of Estimates in Preparation of Financial Statements The preparation of financial statements in conformity with U.S. generally accepted accounting principles ("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 revenues and expenses during the reporting period. Actual results could differ from those estimates. See Note 12 for a discussion of fair value estimates.
Reclassifications	Reclassifications Certain reclassifications have been made in the consolidated financial statements in the 2015 financial statements to conform to the 2016 presentation.
Recently Adopted Accounting Pronouncements and Recently Issued But Not Yet Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements In November 2015, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2015-17 (Topic 740), Balance Sheet Classification of Deferred Taxes. This ASU amends existing guidance to require the presentation of deferred tax liabilities and assets as noncurrent within a classified statement of financial position. ASU No. 2015-17 was adopted by the Company as of June 30, 2016 and was applied prospectively to all deferred tax liabilities and assets. In September 2015, the FASB issued ASU No. 2015-16, Simplifying the Accounting for Measurement-Period Adjustments, which requires that an acquirer recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amounts are determined. Prior to the issuance of the standard, entities were required to retrospectively apply adjustments made to provisional amounts recognized in a business combination. ASU No. 2015-16 was adopted by the Company on January 1, 2016. In April 2015, the FASB issued ASU No. 2015-05, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement. ASU No. 2015-05 provides guidance to customers about whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, then the customer should account for the software license element of the arrangement consistent with the acquisition of other software licenses. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. ASU No. 2015-05 was adopted by the Company on January 1, 2016 and did not have a material impact on the Company's consolidated financial statements. In April 2015, the FASB issued ASU No. 2015-03, Simplifying the Presentation of Debt Issuance Costs, which requires debt issuance costs to be presented in the balance sheet as a direct deduction from the carrying value of the associated debt liability, consistent with the presentation of a debt discount. In August 2015, the FASB issued ASU No. 2015-15, Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements, which clarifies the treatment of debt issuance costs from line-of-credit arrangements after adoption of ASU No. 2015-03. ASU No. 2015-15 clarifies that the Securities and Exchange Commission staff would not object to an entity deferring and presenting debt issuance costs as an asset and subsequently amortizing the deferred debt issuance costs ratably over the term of the line-of-credit arrangement, regardless of whether there are any outstanding borrowings on the line-of-credit arrangement. ASU No. 2015-03 was adopted by the Company on January 1, 2016 representing a change in accounting principle and was applied retrospectively to all periods presented. Debt issuance costs, net for the Company of $67,119 , as of December 31, 2015 were reclassified from deferred financing costs and presented as a reduction to debt in the consolidated balance sheets. Debt issuance costs, net for the Company of $7,588 as of December 31, 2015 relating to its revolving credit facility were not impacted by the adoption of ASU No. 2015-03 and are reflected as long-term assets in the accompanying consolidated balance sheets. In August 2014, the FASB issued ASU No. 2014-15, Disclosures of Uncertainties about an Entity's Ability to Continue as a Going Concern, which requires management to evaluate whether there are conditions or events that raise substantial doubt about the entity's ability to continue as a going concern, and to provide certain disclosures when it is probable that the entity will be unable to meet its obligations as they become due within one year after the date that the financial statements are issued. ASU No. 2014-15 was adopted by the Company on January 1, 2016. In June 2014, the FASB issued ASU No. 2014-12, Compensation - Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved After the Requisite Service Period. ASU No. 2014-12 requires that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. Entities may apply the amendments in this ASU either: (a) prospectively to all awards granted or modified after the effective date; or (b) retrospectively to all awards with performance targets that are outstanding as of the beginning of the earliest annual period presented in the financial statements and to all new or modified awards thereafter. ASU No. 2014-12 was adopted by the Company on January 1, 2016 on a prospective basis and did not have any impact on the Company’s consolidated financial statements. Recently Issued But Not Yet Adopted Accounting Pronouncements In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, requiring an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. ASU No. 2014-09 will replace most existing revenue recognition guidance in GAAP when it becomes effective and allows the use of either the retrospective or cumulative effect transition method. In August 2015, the FASB issued ASU No. 2015-14 that approved deferring the effective date by one year so that ASU No. 2014-09 would become effective for the Company on January 1, 2018. The FASB also approved, in July 2015, permitting the early adoption of ASU No. 2014-09, but not before the original effective date for the Company of January 1, 2017. In December 2016, the FASB issued ASU No. 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers, in order to clarify the Codification and to correct any unintended application of the guidance. These items are not expected to have a significant effect on the current accounting standard. The amendments in this update affect the guidance in ASU No. 2014-09, which is not yet effective. ASU No. 2014-09 will be effective, reflecting the one-year deferral, for interim and annual periods beginning after December 15, 2017 (January 1, 2018 for the Company). Early adoption of the standard is permitted but not before the original effective date. Companies can transition to the standard either retrospectively or as a cumulative-effect adjustment as of the date of adoption. The Company is in the process of evaluating the impact that the adoption of ASU No. 2014-09 will have on its consolidated financial statements and selecting the method of transition to the new standard. We currently expect the adoption to impact the timing of the recognition of residential installation revenue and the recognition of commission expenses. In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash, which requires that the statement of cash flows disclose the change during the period in the total of cash, cash equivalents, restricted cash and restricted cash equivalents. Restricted cash should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of period total amounts shown on the statement of cash flows. ASU No. 2016-18 provides specific guidance on the presentation of restricted cash in the statement of cash flows. The new guidance becomes effective for the Company on January 1, 2019 with early adoption permitted and will be applied retrospectively. In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments which clarifies how entities should classify certain cash receipts and cash payments on the statement of cash flows. ASU No. 2016-15 also clarifies how the predominance principle should be applied when cash receipts and cash payments have aspects of more than one class of cash flows. The new guidance becomes effective for the Company on January 1, 2018 with early adoption permitted and will be applied retrospectively. The Company has not yet completed the evaluation of the effect that ASU No. 2016-15 will have on its consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, Compensation—Stock Compensation: Improvements to Employee Share-Based Payment Accounting, which provides simplification of income tax accounting for share-based payment awards. The new guidance becomes effective for the Company on January 1, 2017 with early adoption permitted. Amendments related to the timing of when excess tax benefits are recognized, minimum statutory withholding requirements, forfeitures, and intrinsic value will be applied using the modified retrospective transition method. Amendments requiring recognition of excess tax benefits and tax deficiencies in the income statement and the practical expedient for estimating expected term will be applied prospectively. The Company may elect to apply the amendments related to the presentation of excess tax benefits on the statement of cash flows using either a prospective transition method or a retrospective transition method. In connection with the adoption on January 1, 2017, a deferred tax asset of approximately $309,000 for previously unrealized excess tax benefits will be recognized with the offset recorded to accumulated deficit. In February 2016, the FASB issued ASU 2016-02, Leases , which increases transparency and comparability by recognizing a lessee’s rights and obligations resulting from leases by recording them on the balance sheet as lease assets and lease liabilities. The new guidance becomes effective for the Company on January 1, 2019 with early adoption permitted and will be applied using the modified retrospective method. The Company has not yet completed the evaluation of the effect that ASU No. 2016-02 will have on its consolidated financial statements.
Principles of Consolidation	Principles of Consolidation The accompanying consolidated financial statements of Cablevision include the accounts of Cablevision and its majority-owned subsidiaries. Cablevision has no business operations independent of CSC Holdings, whose operating results and financial position are consolidated into Cablevision. All significant intercompany transactions and balances between Cablevision and CSC Holdings and their respective consolidated subsidiaries are eliminated in consolidation.
Gross Versus Net Revenue Recognition	Gross Versus Net Revenue Recognition In the normal course of business, 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. The Company's policy is that, in instances where the tax is being assessed directly on the Company, amounts paid to the governmental authorities and amounts received from the customers are recorded on a gross basis. That is, amounts paid to the governmental authorities are recorded as programming and other direct costs and amounts received from the customer are recorded as revenue.
Programming Costs	Programming Costs Programming expenses related to the Company's video service represent fees paid to programming distributors to license the programming distributed to subscribers. This programming is acquired generally under multi-year distribution agreements, with rates usually based on the number of subscribers that receive the programming. There have been periods when an existing distribution agreement has expired and the parties have not finalized negotiations of either a renewal of that agreement or a new agreement for certain periods of time. In substantially all these instances, the Company continues to carry and pay for these services until execution of definitive replacement agreements or renewals. The amount of programming expense recorded during the interim period is based on the Company's estimates of the ultimate contractual agreement expected to be reached, which is based on several factors, including previous contractual rates, customary rate increases and the current status of negotiations. Such estimates are adjusted as negotiations progress until new programming terms are finalized. In addition, the Company has received, or may receive, incentives from programming distributors for carriage of the distributors' programming. The Company generally recognizes these incentives as a reduction of programming costs in "programming and other direct costs", generally over the term of the distribution agreement.

SUMMARY OF SIGNIFICANT ACCOUN_3

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Contract with Customer, Asset and Liability	The following table provides information about contracts assets and contract liabilities related to contracts with customers: December 31, 2018 2017 Contract assets (a) $ 26,405 $ 24,329 Deferred revenue (b) 190,056 117,679 (a) Contract assets include primarily sales commissions for enterprise customers that are deferred and amortized over the average contract term. (b) Deferred revenue represents payments received from customers for services that have yet to be provided and installation revenue which is deferred and recognized over the benefit period. The majority of the Company's deferred revenue represents payments for services for up to one month in advance from residential and SMB customers which is realized within the following month as services are performed.
Disaggregation of Revenue	The following table presents the composition of revenue: Years Ended December 31, 2018 2017 2016 Residential: Pay TV $ 4,156,428 $ 4,274,122 $ 2,788,873 Broadband 2,887,455 2,608,595 1,651,574 Telephony 652,895 700,765 465,771 Business services and wholesale 1,362,758 1,298,213 819,541 Advertising 482,649 391,866 252,049 Other 24,423 33,389 39,404 Total revenue $ 9,566,608 $ 9,306,950 $ 6,017,212
Schedule of Stock by Class	The following table provides details of the Company's shares of common stock outstanding: Shares of Common Stock Outstanding Class A Common Stock Class B Common Stock Balance at June 21, 2017 and December 31, 2017 246,982,292 490,086,674 Altice Europe Distribution on June 8, 2018 (see Note 1) 242,402,231 (242,402,231 ) Conversion of Class B common stock to Class A common stock 34,708,184 (34,708,184 ) Retirement of Class A common shares in connection with the Company's stock repurchase plan (see Note 1) (28,028,680 ) — Balance at December 31, 2018 496,064,027 212,976,259

CHANGE IN ACCOUNTING POLICIES_2

CHANGE IN ACCOUNTING POLICIES AND ATS ACQUISITION (Tables)	12 Months Ended
	Dec. 31, 2018
Accounting Changes and Error Corrections [Abstract]
Schedule of New Accounting Pronouncements	The following table summarizes the impact of adopting ASC 606 and the impact of the ATS Acquisition on the Company's consolidated balance sheet: December 31, 2017 As Reported Impact of ASC 606 Impact of ATS Acquisition As Adjusted Cash and cash equivalents $ 273,329 $ — $ 56,519 $ 329,848 Other current assets 580,231 14,068 (20,548 ) 573,751 Property, plant and equipment, net 6,063,829 — (40,003 ) 6,023,826 Goodwill 7,996,760 — 23,101 8,019,861 Other assets, long-term 19,861,076 10,261 (6,541 ) 19,864,796 Total assets $ 34,775,225 $ 24,329 $ 12,528 $ 34,812,082 Current liabilities $ 2,492,983 $ 6,978 $ 20,401 $ 2,520,362 Deferred tax liability 4,775,115 4,685 (10,514 ) 4,769,286 Liabilities, long-term 21,779,997 — 6,394 21,786,391 Total liabilities 29,048,095 11,663 16,281 29,076,039 Redeemable equity 231,290 — — 231,290 Paid-in-capital 4,642,128 — 23,101 4,665,229 Retained earnings 854,824 12,666 (26,854 ) 840,636 Total stockholders' equity 5,495,840 12,666 (3,753 ) 5,504,753 Total liabilities and stockholders' equity $ 34,775,225 $ 24,329 $ 12,528 $ 34,812,082 The following table summarizes the impact of adopting ASC 606 and ASU No. 2017-07 and the impact of the ATS Acquisition on the Company's consolidated statements of operations: Year Ended December 31, 2017 As Reported Impact of ASC 606 Impact of ASU No. 2017-07 Impact of ATS Acquisition As Adjusted Residential: Pay TV $ 4,214,745 $ 59,878 $ — $ (501 ) $ 4,274,122 Broadband 2,563,772 45,192 — (369 ) 2,608,595 Telephony 823,981 (122,981 ) — (235 ) 700,765 Business services and wholesale 1,298,817 (604 ) — — 1,298,213 Advertising 391,866 — — — 391,866 Other 33,389 — — — 33,389 Total revenue 9,326,570 (18,515 ) — (1,105 ) 9,306,950 Programming and other direct costs 3,035,655 — — — 3,035,655 Other operating expenses 2,342,655 (18,515 ) (11,863 ) 35,038 2,347,315 Restructuring and other expense 152,401 — — — 152,401 Depreciation and amortization 2,930,475 — — 96 2,930,571 Operating income 865,384 — 11,863 (36,239 ) 841,008 Other expense, net (2,196,733 ) — (11,863 ) — (2,208,596 ) Loss before income taxes (1,331,349 ) — — (36,239 ) (1,367,588 ) Income tax benefit 2,852,967 — — 9,385 2,862,352 Net income $ 1,521,618 $ — $ — $ (26,854 ) $ 1,494,764 Year Ended December 31, 2016 As Reported Impact of ASC 606 Impact of ASU No. 2017-07 As Adjusted Residential: Pay TV $ 2,759,216 $ 29,657 $ — $ 2,788,873 Broadband 1,617,029 34,545 — 1,651,574 Telephony 529,973 (64,202 ) — 465,771 Business services and wholesale 819,541 — — 819,541 Advertising 252,049 — — 252,049 Other 39,404 — — 39,404 Total revenue 6,017,212 — — 6,017,212 Programming and other direct costs 1,911,230 — — 1,911,230 Other operating expenses 1,705,615 — (3,143 ) 1,702,472 Restructuring and other expense 240,395 — — 240,395 Depreciation and amortization 1,700,306 — — 1,700,306 Operating income 459,666 — 3,143 462,809 Other expense, net (1,550,811 ) — (3,143 ) (1,553,954 ) Loss before income taxes (1,091,145 ) — — (1,091,145 ) Income tax benefit 259,666 — — 259,666 Net loss $ (831,479 ) $ — $ — $ (831,479 )

BUSINESS COMBINATIONS (Tables)

BUSINESS COMBINATIONS (Tables)	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The following table provides the allocation of the total purchase price of $9,958,323 to the identifiable tangible and intangible assets and liabilities of Cablevision based on their respective fair values. The remaining useful lives represent the period over which acquired tangible and intangible assets with a finite life are being depreciated or amortized. Fair Values Estimated Useful Lives Current assets $ 1,923,071 Accounts receivable 271,305 Property, plant and equipment 4,864,621 2-18 years Goodwill 5,842,172 Indefinite-lived cable television franchises 8,113,575 Indefinite-lived Customer relationships 4,850,000 8 to 18 years Trade names (a) 1,010,000 12 years Amortizable intangible assets 23,296 1-15 years Other non-current assets 748,998 Current liabilities (2,311,201 ) Long-term debt (8,355,386 ) Deferred income taxes. (6,832,773 ) Other non-current liabilities (189,355 ) Total $ 9,958,323 (a) See Note 10 for additional information regarding a change in the remaining estimated useful lives of the Company's trade names.
Business Acquisition, Pro Forma Information	The following table presents the unaudited pro forma revenue and net loss for the period presented as if the Cablevision Acquisition had occurred on January 1, 2016: Year Ended December 31, 2016 Revenue $ 9,154,816 Net loss $ (721,257 )

SUPPLEMENTAL CASH FLOW INFORM_2

SUPPLEMENTAL CASH FLOW INFORMATION (Tables)	12 Months Ended
	Dec. 31, 2018
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: Years Ended December 31, 2018 2017 2016 Non-Cash Investing and Financing Activities: Conversion of notes payable to affiliates and related parties of $1,750,000 (together with accrued and unpaid interest and applicable premium) to common stock (See Note 11) $ — $ 2,264,252 $ — Property and equipment accrued but unpaid 213,936 171,604 155,653 Distributions declared but not paid — — 79,617 Leasehold improvements paid by landlord 350 3,998 — Notes payable issued to vendor for the purchase of equipment 95,394 40,131 12,449 Capital lease obligations 13,548 9,385 — Deferred financing costs accrued but unpaid 1,005 — 2,570 Contingent consideration for acquisitions 6,195 32,233 — Receivable related to the sale of an investment 4,015 — — Supplemental Data: Cash interest paid 1,481,468 1,765,126 1,192,370 Income taxes paid, net 13,667 29,006 1,538

RESTRUCTURING AND OTHER EXPEN_2

RESTRUCTURING AND OTHER EXPENSE (Tables)	12 Months Ended
	Dec. 31, 2018
Restructuring and Related Activities [Abstract]
Restructuring Cost Activity	The following table summarizes the activity for these initiatives: Severance and Other Employee Related Costs Facility Realignment and Other Costs Total Restructuring charges incurred in 2016 $ 215,420 $ 11,157 $ 226,577 Payments and other (113,301 ) (2,760 ) (116,061 ) Accrual balance at December 31, 2016 102,119 8,397 110,516 Restructuring charges 142,679 7,243 149,922 Payments and other (131,324 ) (6,014 ) (137,338 ) Accrual balance at December 31, 2017 $ 113,474 $ 9,626 $ 123,100 Restructuring charges 15,580 15,447 31,027 Payments and other (107,600 ) (11,458 ) (119,058 ) Accrual balance at December 31, 2018 $ 21,454 $ 13,615 $ 35,069

PROPERTY, PLANT AND EQUIPMENT (

PROPERTY, PLANT AND EQUIPMENT (Tables)	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, plant and equipment (including equipment under capital leases) consist of the following assets, which are depreciated or amortized on a straight-line basis over the estimated useful lives shown below: December 31, 2018 December 31, 2017 Estimated Useful Lives Customer premise equipment $ 1,354,510 $ 1,093,726 3 to 5 years Headends and related equipment 1,852,105 1,626,293 5 to 25 years Infrastructure 4,595,143 4,003,845 5 to 25 years Equipment and software 1,083,166 918,298 3 to 10 years Construction in progress (including materials and supplies) 215,684 240,496 Furniture and fixtures 57,448 52,545 5 to 8 years Transportation equipment 146,387 138,147 5 to 10 years Buildings and building improvements 411,573 394,421 10 to 40 years Leasehold improvements 109,110 108,071 Term of lease Land 48,426 47,563 9,873,552 8,623,405 Less accumulated depreciation and amortization (4,044,671 ) (2,599,579 ) $ 5,828,881 $ 6,023,826
Schedule of Capital Leased Assets	The gross amount of buildings and equipment and related accumulated depreciation recorded under capital leases is presented below: December 31, 2018 2017 Buildings and equipment $ 41,554 $ 48,936 Less accumulated depreciation (10,663 ) (12,972 ) $ 30,891 $ 35,964

OPERATING LEASES (Tables)

OPERATING LEASES (Tables)	12 Months Ended
	Dec. 31, 2018
Leases [Abstract]
Schedule of Future Minimum Rental Payments for Operating Leases	The minimum future annual payments for all operating leases (with initial or remaining terms in excess of one year) during the next five years and thereafter, at rates now in force are as follows: 2019 $ 47,905 2020 50,356 2021 43,362 2022 34,882 2023 25,234 Thereafter 167,941

INTANGIBLE ASSETS (Tables)

INTANGIBLE ASSETS (Tables)	12 Months Ended
	Dec. 31, 2018
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 December 31, 2018 As of December 31, 2017 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Estimated Useful Lives Customer relationships $ 5,970,884 $ (2,162,110 ) $ 3,808,774 $ 5,970,884 $ (1,409,021 ) $ 4,561,863 8 to 18 years Trade names (a) 1,067,083 (701,998 ) 365,085 1,067,083 (588,574 ) 478,509 2 to 5 years Other amortizable intangibles 37,644 (18,679 ) 18,965 37,060 (10,978 ) 26,082 1 to 15 years $ 7,075,611 $ (2,882,787 ) $ 4,192,824 $ 7,075,027 $ (2,008,573 ) $ 5,066,454 (a) On May 23, 2017, Altice Europe announced the adoption of a global brand to replace the Company's brands in the future, reducing the remaining useful lives of these trade name intangibles to three years from the date of the adoption, which reflected one year as an in-use asset and two years as a defensive asset. In December 2017, the Company made a decision to postpone the adoption of a global brand that would have replaced the Optimum brand, increasing the useful life of the Optimum trade name intangible asset to 5 years .
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	The following table sets forth the estimated amortization expense on intangible assets for the periods presented: Estimated amortization expense Year Ending December 31, 2019 $ 778,922 Year Ending December 31, 2020 697,316 Year Ending December 31, 2021 617,794 Year Ending December 31, 2022 532,998 Year Ending December 31, 2023 371,198
Schedule of Goodwill	The carrying amount of goodwill is presented below: Goodwill as of January 1, 2016 $ 2,040,402 Goodwill recorded in connection with Cablevision Acquisition 5,838,959 Adjustments to purchase accounting relating to Cequel Acquisition 113,339 Goodwill as of December 31, 2016 7,992,700 Goodwill recorded in connection with acquisitions in the first and fourth quarter of 2017 23,948 Adjustments to purchase accounting relating to Cablevision Acquisition 3,213 Goodwill as of December 31, 2017 8,019,861 Reclassification of goodwill to property, plant and equipment related to Cequel (15,041 ) Goodwill recorded in connection with an acquisition during the third quarter of 2018 7,608 Adjustment to purchase accounting relating to business acquired in fourth quarter of 2017 (12 ) Goodwill as of December 31, 2018 $ 8,012,416

DEBT (Tables)

DEBT (Tables)	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	The following table summarizes the Company's senior guaranteed notes, senior secured notes and senior notes and debentures: Interest Rate December 31, 2018 December 31, 2017 Date Issued Maturity Date Principal Amount Carrying Amount (a) Principal Amount Carrying Amount (a) CSC Holdings Senior Notes: February 6, 1998 February 15, 2018 7.875 % $ — $ — $ 300,000 $ 301,184 July 21, 1998 July 15, 2018 7.625 % (e) — — 500,000 507,744 February 12, 2009 February 15, 2019 8.625 % (h) 526,000 527,749 526,000 541,165 November 15, 2011 November 15, 2021 6.750 % 1,000,000 969,285 1,000,000 960,146 May 23, 2014 June 1, 2024 5.250 % 750,000 671,829 750,000 660,601 October 9, 2015 January 15, 2023 10.125 % (h) 1,800,000 1,781,424 1,800,000 1,777,914 October 9, 2015 October 15, 2025 10.875 % 1,684,221 1,663,027 1,684,221 1,661,135 November 27, 2018 December 15, 2021 5.125 % (g) 1,240,762 1,155,264 — — November 27, 2018 July 15, 2025 7.750 % (g) 617,881 603,889 — — November 27, 2018 April 1, 2028 7.500 % (g) 1,045,882 1,044,143 — — CSC Holdings Senior Guaranteed Notes: October 9, 2015 October 15, 2025 6.625 % 1,000,000 988,052 1,000,000 986,717 September 23, 2016 April 15, 2027 5.500 % 1,310,000 1,304,936 1,310,000 1,304,468 January 29, 2018 February 1, 2028 5.375 % 1,000,000 992,064 — — November 27, 2018 July 15, 2023 5.375 % (g) 1,095,825 1,078,428 — — November 27, 2018 May 15, 2026 5.500 % (g) 1,498,806 1,484,278 — — Cablevision Senior Notes (b): April 15, 2010 April 15, 2018 7.750 % (d) — — 750,000 754,035 April 15, 2010 April 15, 2020 8.000 % 500,000 495,302 500,000 492,009 September 27, 2012 September 15, 2022 5.875 % 649,024 585,817 649,024 572,071 May 16, 2013 Sept. 9, 2014 December 15, 2021 5.125 % (f) 8,886 8,274 — — June 12, 2015 July 15, 2025 7.750 % (f) 1,740 1,690 — — April 5, 2018 April 1, 2028 7.500 % (f) 4,118 4,110 — — Cequel and Cequel Capital Senior Notes: October 25, 2012 September 15, 2020 6.375 % (c) — — 1,050,000 1,027,493 May 16, 2013 Sept. 9, 2014 December 15, 2021 5.125 % (g) — — 1,250,000 1,138,870 June 12, 2015 July 15, 2025 7.750 % (g) — — 620,000 604,374 Altice US Finance I Corporation Senior Secured Notes: June 12, 2015 July 15, 2023 5.375 % (g) — — 1,100,000 1,082,482 April 26, 2016 May 15, 2026 5.500 % (g) — — 1,500,000 1,488,024 $ 15,733,145 15,359,561 16,289,245 15,860,432 Less: current portion — 507,744 Long-term debt $ 15,359,561 $ 15,352,688 (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 Cequel and Cablevision acquisitions. (b) The issuers of these notes have no ability to service interest or principal on the notes, other than through any dividends or distributions received from CSC Holdings. CSC Holdings is restricted, in certain circumstances, from paying dividends or distributions to the issuers by the terms of the CSC Holdings credit facilities agreement. (c) These notes were repaid in April 2018 with the proceeds from the issuance of new senior notes. (d) These notes were repaid in February 2018 with the proceeds from the 2028 Guaranteed Notes (defined below) and with the proceeds from the Incremental Term Loan. (e) These notes were repaid in July 2018 with borrowings under CSC Holdings revolving credit facility agreement. (f) In connection with the Combination discussed above, Cablevision assumed all of the obligations of the Cequel Senior Notes that were not exchanged. (g) Issued or exchanged for new notes in connection with the Combination discussed above or new notes in connection with the Combination discussed above. (h) These notes were repaid subsequent to December 31, 2018 (see Note 21 for further details). In connection with this refinancing, $526,000 of short-term senior notes were reclassified to long-term debt along with the associated unamortized fair value adjustment. The following is a summary of the results of the Exchange Offer: Original Cequel Notes Remaining Original Cequel Notes Notes Redeemed in Cash Principal of New CSC Holdings Notes 5.375% Senior Secured Notes due 2023 $ 1,100,000 $ — $ 4,157 $ 1,095,825 5.5% Senior Secured Notes due 2026 1,500,000 — 1,049 1,498,806 5.125% Senior Notes due 2021 1,250,000 8,886 — 1,240,762 7.75% Senior Notes due 2025 620,000 1,740 — 617,881 7.5% Senior Notes due 2028 1,050,000 4,118 — 1,045,882 $ 5,520,000 $ 14,744 $ 5,206 $ 5,499,156
Schedule of Line of Credit Facilities	The following table provides details of the Company's outstanding credit facility debt: Interest Rate at December 31, 2018 December 31, 2018 December 31, 2017 Maturity Date Principal Amount Carrying Amount (a) Principal Amount Carrying Amount (a) CSC Holdings Restricted Group: Revolving Credit Facility (b) $20,000 on October 9, 2020, remaining balance on November 30, 2021 (d) 5.71% $ 250,000 $ 231,425 $ 450,000 $ 425,488 Term Loan B July 17, 2025 4.71% 2,955,000 2,939,425 2,985,000 2,967,818 Incremental Term Loan B-2 January 25, 2026 4.96% 1,492,500 1,475,778 — — Incremental Term Loan B-3 (c) January 15, 2026 4.75% 1,275,000 1,268,931 — — Cequel: Term Loan Facility (c) — — 1,258,675 1,250,217 $ 5,972,500 5,915,559 $ 4,693,675 4,643,523 Less: Current portion 54,563 42,650 Long-term debt $ 5,860,996 $ 4,600,873 (a) The carrying amount is net of the unamortized deferred financing costs and/or discounts/premiums. (b) At December 31, 2018 , $147,564 of the revolving credit facility was restricted for certain letters of credit issued on behalf of the Company and $1,902,436 of the facility was undrawn and available, subject to covenant limitations. (c) Proceeds from the CSC Holdings term loan were used to repay outstanding amount under the Cequel Term loan in October 2018 in connection with the Combination. See discussion above. (d) See Note 21 for a discussion of the Company's refinancing of the Revolving Credit Facility.
Schedule of Extinguishment of Debt	The following table provides a summary of the loss (gain) on extinguishment of debt and the write-off of deferred financing costs recorded by the Company upon the redemption of senior notes and the refinancing of credit facilities: For the Year Ended December 31, 2018: Cablevision 7.75% Senior Notes due 2018 $ 4,706 Cequel 6.375% Senior Notes due 2020 36,910 Cequel Credit Facility 7,733 Cequel senior and senior secured notes pursuant to the Exchange Offer discussed above (545 ) $ 48,804 For the Year Ended December 31, 2017: Notes payable to affiliates $ 513,723 CSC Holdings Term Loan B 12,675 CSC Holdings 10.875% Senior Notes due 2025 38,858 CSC Holdings 8.625% Senior Notes due 2017 6,300 Cequel Term Loan Facility 2,027 Cequel 6.375% Senior Notes due 2020 26,657 $ 600,240 For the Year Ended December 31, 2016: CSC Holdings Term Loan B $ 102,894 Cequel Term Loan Facility 24,755 $ 127,649
Schedule of Maturities of Long-term Debt	The future maturities of debt payable by the Company under its various debt obligations outstanding as of December 31, 2018 , including notes payable, collateralized indebtedness (see Note 12), and capital leases, are as follows: Years Ending December 31, 2019 $ 684,624 2020 589,566 2021 4,002,251 2022 710,920 2023 2,957,403 Thereafter 14,351,818

DERIVATIVE CONTRACTS AND COLL_2

DERIVATIVE CONTRACTS AND COLLATERALIZED INDEBTEDNESS (Tables)	12 Months Ended
	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Interest Rate Derivatives	The following is a summary of interest rate swap contracts outstanding at December 31, 2018: Trade Date Maturity Date Notional Amount Company Pays Company Receives May 2016 May 2026 $ 750,000 Six- month LIBOR Fixed rate of 1.665% June 2016 May 2026 750,000 Six- month LIBOR Fixed rate of 1.68% May 2018 April 2019 2,970,000 Three- month LIBOR One- month LIBOR plus 0.226% May 2018 April 2019 1,496,250 Three- month LIBOR One- month LIBOR plus 0.226% April 2018 April 2019 1,255,513 Three- month LIBOR minus 0.225% One- month LIBOR December 2018 January 2022 500,000 Fixed rate of 2.7177% Three-month LIBOR December 2018 January 2022 500,000 Fixed rate of 2.733% Three-month LIBOR December 2018 January 2022 500,000 Fixed rate of 2.722% 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
Location of Assets and Liabilities Associated With Derivative Instruments Within the Condensed Consolidated Balance Sheets	The following represents the location of the assets and liabilities associated with the Company's derivative instruments within the consolidated balance sheets:
Schedule of Collateralized Debt Settlement	The following table summarizes the settlement of the Company's collateralized indebtedness relating to Comcast shares that were settled by delivering cash equal to the collateralized loan value, net of the value of the related equity derivative contracts during the years presented: Years Ended December 31, 2018 2017 Number of shares 16,139,868 26,815,368 Collateralized indebtedness settled $ (516,537 ) $ (774,703 ) Derivatives contracts settled 24 (56,356 ) (516,513 ) (831,059 ) Proceeds from new monetization contracts 516,513 838,794 Net cash proceeds $ — $ 7,735

FAIR VALUE MEASUREMENT (Tables)

FAIR VALUE MEASUREMENT (Tables)	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on a Recurring Basis	The following table presents for each of these hierarchy levels, the Company's financial assets and financial liabilities that are measured at fair value on a recurring basis: Fair Value Hierarchy December 31, 2018 December 31, 2017 Assets: Money market funds Level I $ 91,852 $ 5,949 Investment securities pledged as collateral Level I 1,462,626 1,720,357 Prepaid forward contracts Level II 109,344 52,545 Interest rate swap contracts Level II 1,975 — Liabilities: Prepaid forward contracts Level II — 162,049 Interest rate swap contracts Level II 132,978 77,902 Contingent consideration related to 2017 and 2018 acquisitions Level III 6,195 32,233
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments	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 as follows: December 31, 2018 December 31, 2017 Fair Value Hierarchy Carrying Amount (a) Estimated Fair Value Carrying Amount (a) Estimated Fair Value CSC Holdings debt instruments: Credit facility debt Level II $ 5,915,559 $ 5,972,500 $ 3,393,306 $ 3,435,000 Collateralized indebtedness Level II 1,406,182 1,374,203 1,349,474 1,305,932 Senior guaranteed notes Level II 5,847,758 5,646,468 2,291,185 2,420,000 Senior notes and debentures Level II 8,416,610 8,972,722 6,409,889 7,221,846 Notes payable Level II 64,212 63,940 56,956 55,289 Cablevision debt instruments: Senior notes and debentures Level II 1,095,193 1,163,843 1,818,115 1,931,239 Cequel debt instruments: — — Cequel credit facility Level II — — 1,250,217 1,258,675 Senior secured notes Level II — — 2,570,506 2,658,930 Senior notes Level II — — 2,770,737 2,983,615 Notes payable Level II 41,896 41,896 8,946 8,946 $ 22,787,410 $ 23,235,572 $ 21,919,331 $ 23,279,472 (a) Amounts are net of unamortized deferred financing costs and discounts/premiums.

INCOME TAXES (Tables)

INCOME TAXES (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit)	Income tax benefit attributable to the Company's operations for the years ended December 31, 2018 , 2017 and 2016 consist of the following components: Years Ended December 31, 2018 2017 2016 Current expense (benefit): Federal $ (1,865 ) $ 5,261 $ (981 ) State 32,347 12,530 5,310 30,482 17,791 4,329 Deferred benefit: Federal 26,141 (2,095,930 ) (223,159 ) State (93,744 ) (784,224 ) (40,830 ) (67,603 ) (2,880,154 ) (263,989 ) Tax expense (benefit) relating to uncertain tax positions (1,534 ) 11 (6 ) Income tax benefit $ (38,655 ) $ (2,862,352 ) $ (259,666 )
Schedule of Effective Income Tax Rate Reconciliation	The income tax benefit attributable to the Company's operations differs from the amount derived by applying the statutory federal rate to pretax loss principally due to the effect of the following items: Years Ended December 31, 2018 2017 2016 Federal tax benefit at statutory rate $ (3,793 ) $ (478,656 ) $ (381,901 ) State income taxes, net of federal impact (8,103 ) (61,698 ) (39,336 ) Changes in the valuation allowance 15,987 (111 ) 297 Impact of Federal Tax Reform — (2,332,677 ) — Changes in the state rates used to measure deferred taxes, net of federal impact (52,915 ) (12,896 ) 153,239 Tax benefit relating to uncertain tax positions (514 ) (253 ) (120 ) Non-deductible share-based compensation related to the carried unit plan 8,677 20,101 5,029 Non-deductible Cablevision Acquisition transaction costs — — 4,457 Other non-deductible expenses 2,200 3,405 1,551 Other, net (194 ) 433 (2,882 ) Income tax benefit $ (38,655 ) $ (2,862,352 ) $ (259,666 )
Schedule of Deferred Tax Assets and Liabilities	The tax effects of temporary differences which give rise to significant portions of deferred tax assets or liabilities and the corresponding valuation allowance are as follows: December 31, 2018 2017 Noncurrent NOLs and tax credit carry forwards $ 571,413 $ 785,809 Compensation and benefit plans 42,484 49,698 Partnership investments 60,413 68,054 Restructuring liability 9,364 33,247 Other liabilities 38,473 40,149 Liabilities under derivative contracts 20,846 21,034 Interest deferred for tax purposes 166,668 128,516 Other 11,531 8,849 Deferred tax asset 921,192 1,135,356 Valuation allowance (25,400 ) (3,000 ) Net deferred tax asset, noncurrent 895,792 1,132,356 Fixed assets and intangibles (5,496,103 ) (5,729,274 ) Investments (71,167 ) (113,628 ) Prepaid expenses (7,543 ) (8,105 ) Fair value adjustments related to debt and deferred financing costs (40,083 ) (40,215 ) Other (4,833 ) (10,420 ) Deferred tax liability, noncurrent (5,619,729 ) (5,901,642 ) Total net deferred tax liability $ (4,723,937 ) $ (4,769,286 )
Summary of Income Tax Contingencies	A reconciliation of the beginning and ending amount of unrecognized tax benefits associated with uncertain tax positions, excluding associated deferred tax benefits and accrued interest, is as follows: Balance at December 31, 2016 $ 4,025 Increases related to prior year tax positions 11 Balance at December 31, 2017 4,036 Decreases related to prior year tax positions (1,456 ) Balance at December 31, 2018 $ 2,580

SHARE-BASED COMPENSATION (Table

SHARE-BASED COMPENSATION (Tables)	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Activity for Shares	The following table summarizes activity relating to carry units: Number of Time Vesting Awards Number of Performance Based Vesting Awards Weighted Average Grant Date Fair Value Balance, December 31, 2017 168,550,001 10,000,000 $ 0.71 Vested (68,037,500 ) — 0.37 Forfeited (16,937,501 ) — 0.62 Balance, December 31, 2018 83,575,000 10,000,000 $ 1.14
Share-based Compensation, Stock Options, Activity	The following table summarizes activity related to employee stock options: Shares Under Option Weighted Average Exercise Price Per Share Weighted Average Remaining Contractual Term (in years) Time Vesting Performance Based Vesting Aggregate Intrinsic Value (a) Balance at December 31, 2017 5,110,747 — $ 17.45 9.97 $ 8,331 Granted 6,753,659 95,953 17.58 Forfeited (634,238 ) (22,314 ) 17.92 Balance at December 31, 2018 11,230,168 73,639 17.50 9.47 (11,057 ) Options exercisable at December 31, 2018 — — — — — (a) The aggregate intrinsic value is calculated as the difference between the exercise price and the closing price of the Company's Class A common stock at the respective date.
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions	Year Ended December 31, 2018 2017 Risk-free interest rate 2.74% 2.30% Expected life (in years) 6.49 6.44 Dividend yield —% —% Volatility 35.72% 33.95% Grant date fair value $6.91 $8.77

AFFILIATE AND RELATED PARTY T_2

AFFILIATE AND RELATED PARTY TRANSACTIONS (Tables)	12 Months Ended
	Dec. 31, 2018
Related Party Transactions [Abstract]
Summary of related party transactions	The following table summarizes the revenue and charges related to services provided to or received from subsidiaries of Altice Europe and Newsday: Years Ended December 31, 2018 2017 2016 Revenue $ 2,575 $ 1,100 $ 1,086 Operating expenses: Programming and other direct costs $ (7,261 ) $ (4,176 ) $ (1,947 ) Other operating expenses, net (16,307 ) (33,140 ) (18,854 ) Operating expenses, net (23,568 ) (37,316 ) (20,801 ) Interest expense (see Note 11) (a) (600 ) (90,405 ) (112,712 ) Other income. net 149 — — Loss on extinguishment of debt and write-off of deferred financing costs (see Note 11) — (513,723 ) — Net charges $ (21,444 ) $ (640,344 ) $ (132,427 ) Capital Expenditures $ 14,951 $ 22,012 $ 45,886 (a) The 2016 amount includes $10,155 related to Holdco Notes prior to the exchange in addition to the interest related to notes payable to affiliates and related parties discussed in Note 11. In connection with the Company's IPO in June 2017, the Company converted the notes payable to affiliates and related parties into shares of the Company’s common stock at the IPO price. Aggregate amounts that were due from and due to related parties are summarized below: December 31, 2018 2017 Due from: CVC 3 (a) $ 13,100 $ 12,951 Newsday (b) 490 2,713 Altice Europe (b) 1,271 33 Altice Dominican Republic (b) 2,550 — i24NEWS (b) — 4,036 Other Altice Europe subsidiaries (b) 146 31 $ 17,557 $ 19,764 Due to: Altice Europe (c) $ 15,235 $ — Newsday (b) 22 33 Altice Labs S.A. (d) 4,864 7,354 Other Altice Europe subsidiaries (d) 5,975 3,611 $ 26,096 $ 10,998 (a) Represents interest on senior notes paid by the Company on behalf of Altice US Finance S.A., which merged into CVC 3 in 2018. (b) Represents amounts paid by the Company on behalf of or for services provided to the respective related party and for Newsday, the net amounts due from the related party also include charges for certain transition services provided. (c) Includes $13,250 related to the agreement discussed above. (d) Represents amounts due to affiliates for the purchase of equipment and advertising services, as well as reimbursement for payments made on our behalf.

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Tables)	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Contractual Obligation, Fiscal Year Maturity Schedule	Future cash payments and commitments required under arrangements pursuant to contracts entered into by the Company in the normal course of business as of December 31, 2018 are as follows: Payments Due by Period Total Year 1 Years 2-3 Years 4-5 More than 5 years Off balance sheet arrangements: Purchase obligations (a) $ 8,906,134 $ 3,190,028 $ 4,940,814 $ 742,931 $ 32,361 Guarantees (b) 36,912 36,912 — — — Letters of credit (c) 147,564 120 147,444 — — Total $ 9,090,610 $ 3,227,060 $ 5,088,258 $ 742,931 $ 32,361 (a) Purchase obligations primarily include contractual commitments with various programming vendors to provide video services to customers and minimum purchase obligations to purchase goods or services, including contracts to acquire handsets and other equipment. Future fees payable under contracts with programming vendors are based on numerous factors, including the number of customers receiving the programming. Amounts reflected above related to programming agreements are based on the number of customers receiving the programming as of December 31, 2018 multiplied by the per customer rates or the stated annual fee, as applicable, contained in the executed agreements in effect as of December 31, 2018 . (b) Includes franchise and performance surety bonds primarily for the Company's cable television systems. (c) Represent letters of credit guaranteeing performance to municipalities and public utilities and payment of insurance premiums. Payments due by period for these arrangements represent the year in which the commitment expires although payments under these arrangements are required only in the event of nonperformance.

BENEFIT PLANS (Tables)

BENEFIT PLANS (Tables)	12 Months Ended
	Dec. 31, 2018
Retirement Benefits [Abstract]
Schedule of Net Funded Status	Summarized below is the funded status and the amounts recorded on the Company's consolidated balance sheets for all of the Company's Defined Benefit Plans at December 31, 2018 and 2017 : December 31, 2018 2017 Change in projected benefit obligation: Projected benefit obligation at beginning of year $ 299,066 $ 382,517 Interest cost 9,248 11,786 Actuarial loss (gain) (9,894 ) 13,171 Curtailments — 6,332 Settlements 2,373 6,910 Benefits paid (36,278 ) (121,650 ) Projected benefit obligation at end of year 264,515 299,066 Change in plan assets: Fair value of plan assets at beginning of year 195,768 284,118 Actual gain (loss) on plan assets, net (5,705 ) 6,356 Employer contributions 13,725 26,944 Benefits paid (36,278 ) (121,650 ) Fair value of plan assets at end of year 167,510 195,768 Unfunded status at end of year $ (97,005 ) $ (103,298 )
Schedule of Amounts Recognized in Balance Sheet	The Company's net funded status relating to its Defined Benefit Plans at December 31, 2018 and 2017 , is as follows: December 31, 2018 2017 Defined Benefit Plans $ (97,005 ) $ (103,298 ) Less: Current portion related to nonqualified plans 211 135 Long-term defined benefit plan obligations $ (96,794 ) $ (103,163 )
Schedule of Net Benefit Costs	Components of the benefit costs, recorded in other income (expense), net, for the Defined Benefit Plans for the years ended December 31, 2018 , 2017 and 2016, is as follows: Years Ended December 31, 2018 2017 2016 Interest cost $ 9,248 $ 11,786 $ 6,946 Expected return on plan assets, net (987 ) (4,905 ) (3,880 ) Curtailment loss — 3,137 231 Settlement loss (income) (reclassified from accumulated other comprehensive loss) (a) 1,268 1,845 (154 ) Non-operating pension costs $ 9,529 $ 11,863 $ 3,143 (a) As a result of benefit payments to terminated or retired individuals exceeding the service and interest costs for the Pension Plan and the Excess Cash Balance Pension Plan during the years ended December 31, 2018 and 2017 and during the period June 21, 2016 through December 31, 2016, the Company recognized non-cash settlement losses that represent the acceleration of the recognition of a portion of the previously unrecognized actuarial losses recorded in accumulated other comprehensive loss on the Company’s consolidated balance sheets relating to these plans.
Schedule of Assumptions Used	Weighted-average assumptions used to determine pension costs (made at the beginning of the year) and benefit obligations (made at the end of the year) for the Defined Benefit Plans are as follows: Benefit Costs Benefit Obligations at December 31, For the Year Ended December 31, 2018 For the Year Ended December 31, 2017 For the Period June 21, 2016 to December 31, 2016 2018 2017 Discount rate (a) 3.87 % 3.69 % 3.53 % 4.20 % 3.50 % Rate of increase in future compensation levels — % — % — % — % — % Expected rate of return on plan assets (Pension Plan only) 3.67 % 3.90 % 3.97 % N/A N/A (a) The discount rates of 3.87% 3.69% and 3.53% for the years ended December 31, 2018 and 2017 and for the period June 21, 2016 through December 31, 2016, represents the average of the quarterly discount rates used to remeasure the Company's projected benefit obligation and benefit costs in connection with the recognition of settlement losses discussed above.
Schedule of Allocation of Plan Assets	The weighted average asset allocations of the Pension Plan at December 31, 2018 and 2017 were as follows: Plan Assets at December 31, 2018 2017 Asset Class: Mutual funds 29 % 32 % Fixed income securities 65 66 Cash equivalents and other 6 2 100 % 100 % The fair values of the assets of the Pension Plan at December 31, 2018 by asset class are as follows: Asset Class Level I Level II Level III Total Mutual funds $ 49,140 $ — $ — $ 49,140 Fixed income securities held in a portfolio: Foreign issued corporate debt — 14,002 — 14,002 U.S. corporate debt — 43,190 — 43,190 Government debt — 3,988 — 3,988 U.S. Treasury securities — 38,657 — 38,657 Asset-backed securities — 8,907 — 8,907 Other — 205 — 205 Cash equivalents (a) 4,343 3,187 — 7,530 Total (b) $ 53,483 $ 112,136 $ — $ 165,619 (a) A significant portion represents an investment in a short-term investment fund that invests primarily in securities of high quality and low risk. (b) Excludes cash and net receivables relating to the sale of securities that were not settled as of December 31, 2018 . The fair values of the assets of the Pension Plan at December 31, 2017 by asset class are as follows: Asset Class Level I Level II Level III Total Mutual funds $ 61,833 $ — $ — $ 61,833 Fixed income securities held in a portfolio: Foreign issued corporate debt — 10,721 — 10,721 U.S. corporate debt — 39,992 — 39,992 Government debt — 4,645 — 4,645 U.S. Treasury securities — 62,601 — 62,601 Asset-backed securities — 10,978 — 10,978 Cash equivalents (a) 6,691 2,782 — 9,473 Total (b) $ 68,524 $ 131,719 $ — $ 200,243 (a) A significant portion represents an investment in a short-term investment fund that invests primarily in securities of high quality and low risk. (b) Excludes cash and net payables relating to the purchase of securities that were not settled as of December 31, 2017 .
Schedule of Expected Benefit Payments	The following benefit payments are expected to be paid during the periods indicated: 2019 $ 21,137 2020 17,067 2021 17,690 2022 16,837 2023 20,119 2024-2028 93,793

ALLOWANCE FOR DOUBTFUL ACCOUN_2

ALLOWANCE FOR DOUBTFUL ACCOUNTS (Tables)	12 Months Ended
	Dec. 31, 2018
Receivables [Abstract]
Allowance for Credit Losses on Financing Receivables	Activity related to the Company's allowance for doubtful accounts is presented below: Balance at Beginning of Period Provision for Bad Debt Deductions/ Write-Offs and Other Charges Balance at End of Period Year Ended December 31, 2018 Allowance for doubtful accounts $ 13,420 $ 71,426 $ (71,326 ) $ 13,520 Year Ended December 31, 2017 Allowance for doubtful accounts $ 11,677 $ 74,183 $ (72,440 ) $ 13,420 Year Ended December 31, 2016 Allowance for doubtful accounts $ 1,051 $ 53,249 $ (42,623 ) $ 11,677

INTERIM FINANCIAL INFORMATION (

INTERIM FINANCIAL INFORMATION (Tables)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information	The following is a summary of the Company's selected quarterly financial data: Three Months Ended March 31, 2018 June 30, September 30, December 31, Total Residential: Pay TV $ 1,033,708 $ 1,034,404 $ 1,054,667 $ 1,033,649 $ 4,156,428 Broadband 701,621 712,202 729,907 743,725 2,887,455 Telephony 166,038 163,499 161,351 162,007 652,895 Business services and wholesale 333,090 337,388 344,193 348,087 1,362,758 Advertising 87,582 109,898 123,066 162,103 482,649 Other 7,675 6,762 4,617 5,369 24,423 Revenue 2,329,714 2,364,153 2,417,801 2,454,940 9,566,608 Operating expenses (2,016,676 ) (2,029,094 ) (1,912,243 ) (1,926,216 ) (7,884,229 ) Operating income $ 313,038 $ 335,059 $ 505,558 $ 528,724 $ 1,682,379 Net income (loss) $ (128,949 ) $ (98,004 ) $ 33,739 $ 213,808 $ 20,594 Net loss (income) attributable to noncontrolling interests (2 ) 149 (1,186 ) (722 ) (1,761 ) Net income (loss) attributable to Altice USA Inc.'s stockholders $ (128,951 ) $ (97,855 ) $ 32,553 $ 213,086 $ 18,833 Basic and diluted net income (loss) per share attributable to Altice USA Inc.'s stockholders $ (0.17 ) $ (0.13 ) $ 0.04 $ 0.30 $ 0.03 Three Months Ended March 31, 2017 June 30, September 30, December 31, Total Residential: Pay TV $ 1,083,878 $ 1,071,163 $ 1,069,946 $ 1,049,135 $ 4,274,122 Broadband 625,918 642,620 658,278 681,779 2,608,595 Telephony 180,961 178,261 172,479 169,064 700,765 Business services and wholesale 319,420 323,641 324,642 330,510 1,298,213 Advertising 83,361 97,501 89,292 121,712 391,866 Other 8,721 9,176 7,884 7,608 33,389 Revenue 2,302,259 2,322,362 2,322,521 2,359,808 9,306,950 Operating expenses (2,052,149 ) (2,069,094 ) (2,201,946 ) (2,142,753 ) (8,465,942 ) Operating income $ 250,110 $ 253,268 $ 120,575 $ 217,055 $ 841,008 Net income (loss) $ (76,188 ) $ (479,939 ) $ (192,434 ) $ 2,243,325 $ 1,494,764 Net income attributable to noncontrolling interests (237 ) (365 ) (135 ) (850 ) (1,587 ) Net income (loss) attributable to Altice USA, Inc. stockholders $ (76,425 ) $ (480,304 ) $ (192,569 ) $ 2,242,475 $ 1,493,177 Basic and diluted net income (loss) per share attributable to Altice USA Inc.'s stockholders $ (0.12 ) $ (0.73 ) $ (0.26 ) $ 3.04 $ 2.15 (a) In the fourth quarter of 2018, the Company recorded a non-cash deferred tax benefit of $52,915 based on a remeasurement of the Company's net deferred tax liability. See Note 14 to the consolidated financial statements for further details. (b) Pursuant to the enactment of the Tax Reform on December 22, 2017, the Company recorded a non-cash deferred tax benefit of $2,332,677 to remeasure the net deferred tax liability to adjust for the reduction in the corporate federal income tax rate 35% to 21% which was effective on January 1, 2018. The following is a summary of the Company's selected quarterly financial data: Predecessor 2016: March 31, 2016 April 1 to June 20, 2016 Revenue $ 1,645,890 $ 1,491,714 Operating expenses (1,394,635 ) (1,267,663 ) Operating income $ 251,255 $ 224,051 Net income $ 94,311 $ 69,201 Net loss attributable to noncontrolling interests 66 170 Net income attributable to Cablevision Systems Corporation stockholders $ 94,377 $ 69,371 Basic income per share attributable to Cablevision Systems Corporation stockholders: Income from continuing operations, net of income taxes $ 0.35 $ 0.25 Loss from discontinued operations, net of income taxes $ — $ — Net income $ 0.35 $ 0.25 Diluted income per share attributable to Cablevision Systems Corporation stockholders: Income from continuing operations, net of income taxes $ 0.34 $ 0.25 Loss from discontinued operations, net of income taxes $ — $ — Net income $ 0.34 $ 0.25 Amounts attributable to Cablevision Systems Corporation stockholders: Income from continuing operations, net of income taxes $ 94,377 $ 69,371 Loss from discontinued operations, net of income taxes — — Net income $ 94,377 $ 69,371 Predecessor 2015: March 31, 2015 June 30, 2015 September 30, 2015 December 31, 2015 Total 2015 Revenue $ 1,622,352 $ 1,661,940 $ 1,624,828 $ 1,636,425 $ 6,545,545 Operating expenses (1,398,601 ) (1,417,476 ) (1,441,712 ) (1,439,285 ) (5,697,074 ) Operating income $ 223,751 $ 244,464 $ 183,116 $ 197,140 $ 848,471 Income from continuing operations, net of income taxes $ 54,901 $ 75,676 $ 23,431 $ 33,781 $ 187,789 Income (loss) from discontinued operations, net of income taxes (10,502 ) — (406 ) (1,633 ) (12,541 ) Net income 44,399 75,676 23,025 32,148 175,248 Net loss (income) attributable to noncontrolling interests 234 (81 ) 78 (30 ) 201 Net income attributable to Cablevision Systems Corporation stockholders $ 44,633 $ 75,595 $ 23,103 $ 32,118 $ 175,449 Basic income per share attributable to Cablevision Systems Corporation stockholders: Income from continuing operations, net of income taxes $ 0.21 $ 0.28 $ 0.09 $ 0.12 $ 0.70 Income (loss) from discontinued operations, net of income taxes $ (0.04 ) $ — $ — $ (0.01 ) $ (0.05 ) Net income $ 0.17 $ 0.28 $ 0.09 $ 0.12 $ 0.65 Diluted income per share attributable to Cablevision Systems Corporation stockholders: Income from continuing operations, net of income taxes $ 0.20 $ 0.27 $ 0.08 $ 0.12 $ 0.68 Income (loss) from discontinued operations, net of income taxes $ (0.04 ) $ — $ — $ (0.01 ) $ (0.05 ) Net income $ 0.16 $ 0.27 $ 0.08 $ 0.12 $ 0.63 Amounts attributable to Cablevision Systems Corporation stockholders: Income from continuing operations, net of income taxes $ 55,135 $ 75,595 $ 23,509 $ 33,751 $ 187,990 Income (loss) from discontinued operations, net of income taxes (10,502 ) — (406 ) (1,633 ) (12,541 ) Net income $ 44,633 $ 75,595 $ 23,103 $ 32,118 $ 175,449

CVC - SUMMARY OF SIGNIFICANT _2

CVC - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)	12 Months Ended
	Dec. 31, 2018
Schedule of common stock	The following table provides details of the Company's shares of common stock outstanding: Shares of Common Stock Outstanding Class A Common Stock Class B Common Stock Balance at June 21, 2017 and December 31, 2017 246,982,292 490,086,674 Altice Europe Distribution on June 8, 2018 (see Note 1) 242,402,231 (242,402,231 ) Conversion of Class B common stock to Class A common stock 34,708,184 (34,708,184 ) Retirement of Class A common shares in connection with the Company's stock repurchase plan (see Note 1) (28,028,680 ) — Balance at December 31, 2018 496,064,027 212,976,259
Cablevision Systems Corporation And Subsidiaries
Schedule of common stock	The following table provides details of Cablevision's shares of common stock through the Merger Date: Shares of Common Stock Outstanding Class A Common Stock Class B Common Stock Balance at December 31, 2014 220,219,935 54,137,673 Employee and non-employee director stock transactions (a) 2,352,275 — Balance at December 31, 2015 222,572,210 54,137,673 Employee and non-employee director stock transactions (a) (185,276 ) — Balance at June 20, 2016 222,386,934 54,137,673 (a) Primarily included issuances of common stock in connection with employee and non-employee director exercises of stock options and restricted shares granted to employees, offset by shares acquired by the Company in connection with the fulfillment of employees' statutory tax withholding obligation for applicable income and other employment taxes and forfeited employee restricted shares.
Schedule of cash dividends declared	Prior to the Merger, the Board of Directors of Cablevision had declared and paid the following cash dividends to stockholders of record on both its CNYG Class A common stock and CNYG Class B common stock: Declaration Date Dividend per Share Record Date Payment Date August 6, 2015 $0.15 August 21, 2015 September 10, 2015 May 1, 2015 $0.15 May 22, 2015 June 12, 2015 February 24, 2015 $0.15 March 16, 2015 April 3, 2015
Reconciliation of weighted average shares used in the calculations of the basic and diluted net income per share attributable to Cablevision stockholders	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 Cablevision stockholders: January 1, 2016 to June 20, 2016 Years Ended December 31, 2015 Basic weighted average shares outstanding 272,035 269,388 Effect of dilution: Stock options 4,444 3,532 Restricted stock 3,720 3,419 Diluted weighted average shares outstanding 280,199 276,339

CVC - ALLOWANCE FOR DOUBTFUL _2

CVC - ALLOWANCE FOR DOUBTFUL ACCOUNTS (Tables)	12 Months Ended
	Dec. 31, 2018
Schedule of activity related to the allowance for doubtful accounts	Activity related to the Company's allowance for doubtful accounts is presented below: Balance at Beginning of Period Provision for Bad Debt Deductions/ Write-Offs and Other Charges Balance at End of Period Year Ended December 31, 2018 Allowance for doubtful accounts $ 13,420 $ 71,426 $ (71,326 ) $ 13,520 Year Ended December 31, 2017 Allowance for doubtful accounts $ 11,677 $ 74,183 $ (72,440 ) $ 13,420 Year Ended December 31, 2016 Allowance for doubtful accounts $ 1,051 $ 53,249 $ (42,623 ) $ 11,677
Cablevision Systems Corporation And Subsidiaries
Schedule of activity related to the allowance for doubtful accounts	Activity related to the allowance for doubtful accounts: Balance at Beginning of Period Provision for Bad Debt Deductions/ Write-Offs and Other Charges Balance at End of Period Period from January 1, 2016 through June 20, 2016 Allowance for doubtful accounts $ 6,039 $ 13,240 $ (12,378 ) $ 6,901 Year Ended December 31, 2015 Allowance for doubtful accounts $ 12,112 $ 35,802 $ (41,875 ) $ 6,039

CVC - SUPPLEMENTAL CASH FLOW _2

CVC - SUPPLEMENTAL CASH FLOW INFORMATION (Tables)	12 Months Ended
	Dec. 31, 2018
Schedule of 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: Years Ended December 31, 2018 2017 2016 Non-Cash Investing and Financing Activities: Conversion of notes payable to affiliates and related parties of $1,750,000 (together with accrued and unpaid interest and applicable premium) to common stock (See Note 11) $ — $ 2,264,252 $ — Property and equipment accrued but unpaid 213,936 171,604 155,653 Distributions declared but not paid — — 79,617 Leasehold improvements paid by landlord 350 3,998 — Notes payable issued to vendor for the purchase of equipment 95,394 40,131 12,449 Capital lease obligations 13,548 9,385 — Deferred financing costs accrued but unpaid 1,005 — 2,570 Contingent consideration for acquisitions 6,195 32,233 — Receivable related to the sale of an investment 4,015 — — Supplemental Data: Cash interest paid 1,481,468 1,765,126 1,192,370 Income taxes paid, net 13,667 29,006 1,538
Cablevision Systems Corporation And Subsidiaries
Schedule of 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: January 1, 2016 to June 20, 2016 Years Ended December 31, 2015 Non-Cash Investing and Financing Activities: Continuing Operations: Property and equipment accrued but unpaid $ 68,356 $ 63,843 Notes payable to vendor — 8,318 Capital lease obligations — 19,987 Intangible asset obligations 290 1,121 Non-Cash Investing and Financing Activities: Dividends payable on unvested restricted share awards — 3,517 Supplemental Data: Continuing Operations: Cash interest paid 258,940 560,361 Income taxes paid, net 7,082 3,849

CVC - PROPERTY, PLANT AND EQU_2

CVC - PROPERTY, PLANT AND EQUIPMENT (Tables)	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Schedule of property, plant and equipment	Property, plant and equipment (including equipment under capital leases) consist of the following assets, which are depreciated or amortized on a straight-line basis over the estimated useful lives shown below: December 31, 2018 December 31, 2017 Estimated Useful Lives Customer premise equipment $ 1,354,510 $ 1,093,726 3 to 5 years Headends and related equipment 1,852,105 1,626,293 5 to 25 years Infrastructure 4,595,143 4,003,845 5 to 25 years Equipment and software 1,083,166 918,298 3 to 10 years Construction in progress (including materials and supplies) 215,684 240,496 Furniture and fixtures 57,448 52,545 5 to 8 years Transportation equipment 146,387 138,147 5 to 10 years Buildings and building improvements 411,573 394,421 10 to 40 years Leasehold improvements 109,110 108,071 Term of lease Land 48,426 47,563 9,873,552 8,623,405 Less accumulated depreciation and amortization (4,044,671 ) (2,599,579 ) $ 5,828,881 $ 6,023,826
Schedule of buildings and equipment under capital lease	The gross amount of buildings and equipment and related accumulated depreciation recorded under capital leases is presented below: December 31, 2018 2017 Buildings and equipment $ 41,554 $ 48,936 Less accumulated depreciation (10,663 ) (12,972 ) $ 30,891 $ 35,964
Cablevision Systems Corporation And Subsidiaries
Property, Plant and Equipment [Line Items]
Schedule of property, plant and equipment	Property, plant and equipment (including equipment under capital leases) consist of the following assets, which are depreciated or amortized on a straight-line basis over the estimated useful lives shown below: December 31, 2015 Estimated Useful Lives Customer equipment $ 1,952,336 3 to 5 years Headends and related equipment 2,388,289 4 to 25 years Infrastructure 5,639,226 3 to 25 years Equipment and software 1,577,616 3 to 10 years Construction in progress (including materials and supplies) 87,412 Furniture and fixtures 96,561 5 to 12 years Transportation equipment 210,013 5 to 18 years Buildings and building improvements 322,267 10 to 40 years Leasehold improvements 354,136 Term of lease Land 14,507 12,642,363 Less accumulated depreciation and amortization (9,625,348 ) $ 3,017,015
Schedule of buildings and equipment under capital lease	At December 31, 2015, the gross amount of equipment and related accumulated amortization recorded under capital leases was as follows: December 31, 2015 Equipment $ 90,099 Less accumulated amortization (28,119 ) $ 61,980

CVC - OPERATING LEASES (Tables)

CVC - OPERATING LEASES (Tables)	12 Months Ended
	Dec. 31, 2018
Cablevision Systems Corporation And Subsidiaries
Schedule of future minimum annual payments for all operating leases	The minimum future annual payments for all operating leases (with initial or remaining terms in excess of one year) during the next five years and thereafter, including pole rentals from January 1, 2017 through December 31, 2021, are as follows: 2017 $ 57,853 2018 52,206 2019 44,908 2020 41,221 2021 38,697 Thereafter 141,063

CVC - INTANGIBLE ASSETS (Tables

CVC - INTANGIBLE ASSETS (Tables)	12 Months Ended
	Dec. 31, 2018
Acquired Finite-Lived Intangible Assets [Line Items]
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 December 31, 2018 As of December 31, 2017 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Estimated Useful Lives Customer relationships $ 5,970,884 $ (2,162,110 ) $ 3,808,774 $ 5,970,884 $ (1,409,021 ) $ 4,561,863 8 to 18 years Trade names (a) 1,067,083 (701,998 ) 365,085 1,067,083 (588,574 ) 478,509 2 to 5 years Other amortizable intangibles 37,644 (18,679 ) 18,965 37,060 (10,978 ) 26,082 1 to 15 years $ 7,075,611 $ (2,882,787 ) $ 4,192,824 $ 7,075,027 $ (2,008,573 ) $ 5,066,454 (a) On May 23, 2017, Altice Europe announced the adoption of a global brand to replace the Company's brands in the future, reducing the remaining useful lives of these trade name intangibles to three years from the date of the adoption, which reflected one year as an in-use asset and two years as a defensive asset. In December 2017, the Company made a decision to postpone the adoption of a global brand that would have replaced the Optimum brand, increasing the useful life of the Optimum trade name intangible asset to 5 years .
Schedule of Goodwill	The carrying amount of goodwill is presented below: Goodwill as of January 1, 2016 $ 2,040,402 Goodwill recorded in connection with Cablevision Acquisition 5,838,959 Adjustments to purchase accounting relating to Cequel Acquisition 113,339 Goodwill as of December 31, 2016 7,992,700 Goodwill recorded in connection with acquisitions in the first and fourth quarter of 2017 23,948 Adjustments to purchase accounting relating to Cablevision Acquisition 3,213 Goodwill as of December 31, 2017 8,019,861 Reclassification of goodwill to property, plant and equipment related to Cequel (15,041 ) Goodwill recorded in connection with an acquisition during the third quarter of 2018 7,608 Adjustment to purchase accounting relating to business acquired in fourth quarter of 2017 (12 ) Goodwill as of December 31, 2018 $ 8,012,416
Cablevision Systems Corporation And Subsidiaries
Acquired Finite-Lived Intangible Assets [Line Items]
Schedule of Acquired Finite-Lived Intangible Assets by Major Class	The following table summarizes information relating to the Company's acquired intangible assets: December 31, 2015 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Estimated Useful Lives Customer relationships $ 39,414 $ (27,778 ) $ 11,636 10 to 18 years Trade names — — — Other amortizable intangibles 57,847 (32,532 ) 25,315 3 to 28 years $ 97,261 $ (60,310 ) $ 36,951
Schedule of Indefinite-Lived Intangible Assets	The following table summarizes information relating to the Company's acquired indefinite-lived intangible assets: December 31, 2015 Cable television franchises $ 731,848 Trademarks and other assets 7,250 Goodwill 262,345 Total $ 1,001,443
Schedule of Goodwill	The carrying amount of goodwill is presented below: Gross goodwill as of December 31, 2015 (Predecessor) $ 596,403 Accumulated impairment losses (334,058 ) Net goodwill as of June 20, 2016 $ 262,345

CVC - DEBT (Tables)

CVC - DEBT (Tables)	12 Months Ended
	Dec. 31, 2018
Debt Instrument [Line Items]
Schedule of Line of Credit Facilities	The following table provides details of the Company's outstanding credit facility debt: Interest Rate at December 31, 2018 December 31, 2018 December 31, 2017 Maturity Date Principal Amount Carrying Amount (a) Principal Amount Carrying Amount (a) CSC Holdings Restricted Group: Revolving Credit Facility (b) $20,000 on October 9, 2020, remaining balance on November 30, 2021 (d) 5.71% $ 250,000 $ 231,425 $ 450,000 $ 425,488 Term Loan B July 17, 2025 4.71% 2,955,000 2,939,425 2,985,000 2,967,818 Incremental Term Loan B-2 January 25, 2026 4.96% 1,492,500 1,475,778 — — Incremental Term Loan B-3 (c) January 15, 2026 4.75% 1,275,000 1,268,931 — — Cequel: Term Loan Facility (c) — — 1,258,675 1,250,217 $ 5,972,500 5,915,559 $ 4,693,675 4,643,523 Less: Current portion 54,563 42,650 Long-term debt $ 5,860,996 $ 4,600,873 (a) The carrying amount is net of the unamortized deferred financing costs and/or discounts/premiums. (b) At December 31, 2018 , $147,564 of the revolving credit facility was restricted for certain letters of credit issued on behalf of the Company and $1,902,436 of the facility was undrawn and available, subject to covenant limitations. (c) Proceeds from the CSC Holdings term loan were used to repay outstanding amount under the Cequel Term loan in October 2018 in connection with the Combination. See discussion above. (d) See Note 21 for a discussion of the Company's refinancing of the Revolving Credit Facility.
Schedule of Long-term Debt Instruments	The following table summarizes the Company's senior guaranteed notes, senior secured notes and senior notes and debentures: Interest Rate December 31, 2018 December 31, 2017 Date Issued Maturity Date Principal Amount Carrying Amount (a) Principal Amount Carrying Amount (a) CSC Holdings Senior Notes: February 6, 1998 February 15, 2018 7.875 % $ — $ — $ 300,000 $ 301,184 July 21, 1998 July 15, 2018 7.625 % (e) — — 500,000 507,744 February 12, 2009 February 15, 2019 8.625 % (h) 526,000 527,749 526,000 541,165 November 15, 2011 November 15, 2021 6.750 % 1,000,000 969,285 1,000,000 960,146 May 23, 2014 June 1, 2024 5.250 % 750,000 671,829 750,000 660,601 October 9, 2015 January 15, 2023 10.125 % (h) 1,800,000 1,781,424 1,800,000 1,777,914 October 9, 2015 October 15, 2025 10.875 % 1,684,221 1,663,027 1,684,221 1,661,135 November 27, 2018 December 15, 2021 5.125 % (g) 1,240,762 1,155,264 — — November 27, 2018 July 15, 2025 7.750 % (g) 617,881 603,889 — — November 27, 2018 April 1, 2028 7.500 % (g) 1,045,882 1,044,143 — — CSC Holdings Senior Guaranteed Notes: October 9, 2015 October 15, 2025 6.625 % 1,000,000 988,052 1,000,000 986,717 September 23, 2016 April 15, 2027 5.500 % 1,310,000 1,304,936 1,310,000 1,304,468 January 29, 2018 February 1, 2028 5.375 % 1,000,000 992,064 — — November 27, 2018 July 15, 2023 5.375 % (g) 1,095,825 1,078,428 — — November 27, 2018 May 15, 2026 5.500 % (g) 1,498,806 1,484,278 — — Cablevision Senior Notes (b): April 15, 2010 April 15, 2018 7.750 % (d) — — 750,000 754,035 April 15, 2010 April 15, 2020 8.000 % 500,000 495,302 500,000 492,009 September 27, 2012 September 15, 2022 5.875 % 649,024 585,817 649,024 572,071 May 16, 2013 Sept. 9, 2014 December 15, 2021 5.125 % (f) 8,886 8,274 — — June 12, 2015 July 15, 2025 7.750 % (f) 1,740 1,690 — — April 5, 2018 April 1, 2028 7.500 % (f) 4,118 4,110 — — Cequel and Cequel Capital Senior Notes: October 25, 2012 September 15, 2020 6.375 % (c) — — 1,050,000 1,027,493 May 16, 2013 Sept. 9, 2014 December 15, 2021 5.125 % (g) — — 1,250,000 1,138,870 June 12, 2015 July 15, 2025 7.750 % (g) — — 620,000 604,374 Altice US Finance I Corporation Senior Secured Notes: June 12, 2015 July 15, 2023 5.375 % (g) — — 1,100,000 1,082,482 April 26, 2016 May 15, 2026 5.500 % (g) — — 1,500,000 1,488,024 $ 15,733,145 15,359,561 16,289,245 15,860,432 Less: current portion — 507,744 Long-term debt $ 15,359,561 $ 15,352,688 (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 Cequel and Cablevision acquisitions. (b) The issuers of these notes have no ability to service interest or principal on the notes, other than through any dividends or distributions received from CSC Holdings. CSC Holdings is restricted, in certain circumstances, from paying dividends or distributions to the issuers by the terms of the CSC Holdings credit facilities agreement. (c) These notes were repaid in April 2018 with the proceeds from the issuance of new senior notes. (d) These notes were repaid in February 2018 with the proceeds from the 2028 Guaranteed Notes (defined below) and with the proceeds from the Incremental Term Loan. (e) These notes were repaid in July 2018 with borrowings under CSC Holdings revolving credit facility agreement. (f) In connection with the Combination discussed above, Cablevision assumed all of the obligations of the Cequel Senior Notes that were not exchanged. (g) Issued or exchanged for new notes in connection with the Combination discussed above or new notes in connection with the Combination discussed above. (h) These notes were repaid subsequent to December 31, 2018 (see Note 21 for further details). In connection with this refinancing, $526,000 of short-term senior notes were reclassified to long-term debt along with the associated unamortized fair value adjustment. The following is a summary of the results of the Exchange Offer: Original Cequel Notes Remaining Original Cequel Notes Notes Redeemed in Cash Principal of New CSC Holdings Notes 5.375% Senior Secured Notes due 2023 $ 1,100,000 $ — $ 4,157 $ 1,095,825 5.5% Senior Secured Notes due 2026 1,500,000 — 1,049 1,498,806 5.125% Senior Notes due 2021 1,250,000 8,886 — 1,240,762 7.75% Senior Notes due 2025 620,000 1,740 — 617,881 7.5% Senior Notes due 2028 1,050,000 4,118 — 1,045,882 $ 5,520,000 $ 14,744 $ 5,206 $ 5,499,156
Schedule of Maturities of Long-term Debt	The future maturities of debt payable by the Company under its various debt obligations outstanding as of December 31, 2018 , including notes payable, collateralized indebtedness (see Note 12), and capital leases, are as follows: Years Ending December 31, 2019 $ 684,624 2020 589,566 2021 4,002,251 2022 710,920 2023 2,957,403 Thereafter 14,351,818
Cablevision Systems Corporation And Subsidiaries
Debt Instrument [Line Items]
Schedule of Line of Credit Facilities	The following table provides details of the Company's outstanding credit facility debt (net of unamortized financing costs and unamortized discounts): Maturity Interest Rate Principal December 31, 2015 (a) Restricted Group: Term A loan facility (b) April 17, 2018 2.17% $ 886,621 $ 885,105 Term B loan facility (b) April 17, 2020 2.92% 1,159,031 1,150,227 Restricted Group Credit Facilities debt $ 2,035,332 (a) The unamortized discounts and deferred financing costs amounted to $11,200 at December 31, 2015. (b) In connection with the Merger, the Company repaid the then outstanding Term A and Term B loan facilities (see discussion above).
Schedule of Long-term Debt Instruments	The following table summarizes the Company's senior notes and debentures as of December 31, 2015: Interest Principal Carrying Issuer Date Issued Maturity Date Rate Amount Amount (c) CSC Holdings (a) February 6, 1998 February 15, 2018 7.875 % $ 300,000 $ 299,091 CSC Holdings (a) July 21, 1998 July 15, 2018 7.625 % 500,000 498,942 CSC Holdings (b) February 12, 2009 February 15, 2019 8.625 % 526,000 511,079 CSC Holdings (b) November 15, 2011 November 15, 2021 6.750 % 1,000,000 985,640 CSC Holdings (b) May 23, 2014 June 1, 2024 5.250 % 750,000 737,500 Cablevision (b) September 23, 2009 September 15, 2017 8.625 % 900,000 891,238 Cablevision (b) April 15, 2010 April 15, 2018 7.750 % 750,000 744,402 Cablevision (b) April 15, 2010 April 15, 2020 8.000 % 500,000 494,410 Cablevision (b) September 27, 2012 September 15, 2022 5.875 % 649,024 638,709 Total $ 5,801,011 (a) The debentures are not redeemable by the Company prior to maturity. (b) The Company may redeem some or all of the notes at any time at a specified "make-whole" price plus accrued and unpaid interest to the redemption date. (c) The carrying amount of the notes is net of the unamortized deferred financing costs and/or discounts/premiums.
Schedule of Maturities of Long-term Debt	Total amounts payable by the Company under its various debt obligations outstanding, including the debt transaction subsequent to the merger discussed above and including notes payable, collateralized indebtedness, and capital leases, during the periods shown below, are as follows: Years Ending December 31, 2017 $ 1,719,180 2018 2,103,441 2019 557,348 2020 526,340 2021 1,200,256 Thereafter 9,884,024

CVC - DERIVATIVE CONTRACTS AN_2

CVC - DERIVATIVE CONTRACTS AND COLLATERALIZED INDEBTEDNESS (Tables)	12 Months Ended
	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Location of Assets and Liabilities Associated With Derivative Instruments Within the Condensed Consolidated Balance Sheets	The following represents the location of the assets and liabilities associated with the Company's derivative instruments within the consolidated balance sheets:
Schedule of Collateralized Debt Settlement	The following table summarizes the settlement of the Company's collateralized indebtedness relating to Comcast shares that were settled by delivering cash equal to the collateralized loan value, net of the value of the related equity derivative contracts during the years presented: Years Ended December 31, 2018 2017 Number of shares 16,139,868 26,815,368 Collateralized indebtedness settled $ (516,537 ) $ (774,703 ) Derivatives contracts settled 24 (56,356 ) (516,513 ) (831,059 ) Proceeds from new monetization contracts 516,513 838,794 Net cash proceeds $ — $ 7,735
Cablevision Systems Corporation And Subsidiaries
Derivatives, Fair Value [Line Items]
Location of Assets and Liabilities Associated With Derivative Instruments Within the Condensed Consolidated Balance Sheets	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 Asset Derivatives Liability Derivatives Fair Value at December 31, 2015 Prepaid forward contracts Current derivative contracts $ 10,333 $ 2,706 Prepaid forward contracts Long-term derivative contracts 72,075 — $ 82,408 $ 2,706
Schedule of Collateralized Debt Settlement	The following table summarizes the settlement of the Company's collateralized indebtedness relating to Comcast shares that were settled by delivering cash equal to the collateralized loan value, net of the value of the related equity derivative contracts. January 1 to June 20, 2016 Year Ended December 31, 2015 Number of shares (a) 10,802,118 26,815,368 Collateralized indebtedness settled $ (273,519 ) $ (569,562 ) Derivative contracts settled (8,075 ) (69,675 ) (281,594 ) (639,237 ) Proceeds from new monetization contracts 337,149 774,703 Net cash receipt $ 55,555 $ 135,466 ______________________ (a) Share amounts adjusted for the 2 for 1 stock split in February 2017.

CVC - FAIR VALUE MEASUREMENT (T

CVC - FAIR VALUE MEASUREMENT (Tables)	12 Months Ended
	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets and Liabilities Measured at Fair Value on a Recurring Basis	The following table presents for each of these hierarchy levels, the Company's financial assets and financial liabilities that are measured at fair value on a recurring basis: Fair Value Hierarchy December 31, 2018 December 31, 2017 Assets: Money market funds Level I $ 91,852 $ 5,949 Investment securities pledged as collateral Level I 1,462,626 1,720,357 Prepaid forward contracts Level II 109,344 52,545 Interest rate swap contracts Level II 1,975 — Liabilities: Prepaid forward contracts Level II — 162,049 Interest rate swap contracts Level II 132,978 77,902 Contingent consideration related to 2017 and 2018 acquisitions Level III 6,195 32,233
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments	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 as follows: December 31, 2018 December 31, 2017 Fair Value Hierarchy Carrying Amount (a) Estimated Fair Value Carrying Amount (a) Estimated Fair Value CSC Holdings debt instruments: Credit facility debt Level II $ 5,915,559 $ 5,972,500 $ 3,393,306 $ 3,435,000 Collateralized indebtedness Level II 1,406,182 1,374,203 1,349,474 1,305,932 Senior guaranteed notes Level II 5,847,758 5,646,468 2,291,185 2,420,000 Senior notes and debentures Level II 8,416,610 8,972,722 6,409,889 7,221,846 Notes payable Level II 64,212 63,940 56,956 55,289 Cablevision debt instruments: Senior notes and debentures Level II 1,095,193 1,163,843 1,818,115 1,931,239 Cequel debt instruments: — — Cequel credit facility Level II — — 1,250,217 1,258,675 Senior secured notes Level II — — 2,570,506 2,658,930 Senior notes Level II — — 2,770,737 2,983,615 Notes payable Level II 41,896 41,896 8,946 8,946 $ 22,787,410 $ 23,235,572 $ 21,919,331 $ 23,279,472 (a) Amounts are net of unamortized deferred financing costs and discounts/premiums.
Cablevision Systems Corporation And Subsidiaries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets and Liabilities Measured at Fair Value on a Recurring Basis	The following table presents for each of these hierarchy levels, the Company's financial assets and financial liabilities that are measured at fair value on a recurring basis: At December 31, 2015 Level I Level II Level III Total Assets: Money market funds $ 922,765 $ — $ — $ 922,765 Investment securities 130 — — 130 Investment securities pledged as collateral 1,211,982 — — 1,211,982 Prepaid forward contracts — 82,408 — 82,408 Liabilities: Prepaid forward contracts — 2,706 — 2,706
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments	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 as follows: December 31, 2015 Fair Value Hierarchy Carrying Amount Estimated Fair Value Debt instruments: Credit facility debt Level II $ 2,514,454 $ 2,525,654 Collateralized indebtedness Level II 1,191,324 1,176,396 Senior notes and debentures Level II 5,801,011 5,756,608 Notes payable Level II 14,544 14,483 Total debt instruments $ 9,521,333 $ 9,473,141

CVC - INCOME TAXES (Tables)

CVC - INCOME TAXES (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Expense (Benefit) Attributable to Continuing Operations	Income tax benefit attributable to the Company's operations for the years ended December 31, 2018 , 2017 and 2016 consist of the following components: Years Ended December 31, 2018 2017 2016 Current expense (benefit): Federal $ (1,865 ) $ 5,261 $ (981 ) State 32,347 12,530 5,310 30,482 17,791 4,329 Deferred benefit: Federal 26,141 (2,095,930 ) (223,159 ) State (93,744 ) (784,224 ) (40,830 ) (67,603 ) (2,880,154 ) (263,989 ) Tax expense (benefit) relating to uncertain tax positions (1,534 ) 11 (6 ) Income tax benefit $ (38,655 ) $ (2,862,352 ) $ (259,666 )
Reconciliation of Effective Tax Rate from Continuing Operations	The income tax benefit attributable to the Company's operations differs from the amount derived by applying the statutory federal rate to pretax loss principally due to the effect of the following items: Years Ended December 31, 2018 2017 2016 Federal tax benefit at statutory rate $ (3,793 ) $ (478,656 ) $ (381,901 ) State income taxes, net of federal impact (8,103 ) (61,698 ) (39,336 ) Changes in the valuation allowance 15,987 (111 ) 297 Impact of Federal Tax Reform — (2,332,677 ) — Changes in the state rates used to measure deferred taxes, net of federal impact (52,915 ) (12,896 ) 153,239 Tax benefit relating to uncertain tax positions (514 ) (253 ) (120 ) Non-deductible share-based compensation related to the carried unit plan 8,677 20,101 5,029 Non-deductible Cablevision Acquisition transaction costs — — 4,457 Other non-deductible expenses 2,200 3,405 1,551 Other, net (194 ) 433 (2,882 ) Income tax benefit $ (38,655 ) $ (2,862,352 ) $ (259,666 )
Significant Components of Deferred Tax Assets and Liabilities	The tax effects of temporary differences which give rise to significant portions of deferred tax assets or liabilities and the corresponding valuation allowance are as follows: December 31, 2018 2017 Noncurrent NOLs and tax credit carry forwards $ 571,413 $ 785,809 Compensation and benefit plans 42,484 49,698 Partnership investments 60,413 68,054 Restructuring liability 9,364 33,247 Other liabilities 38,473 40,149 Liabilities under derivative contracts 20,846 21,034 Interest deferred for tax purposes 166,668 128,516 Other 11,531 8,849 Deferred tax asset 921,192 1,135,356 Valuation allowance (25,400 ) (3,000 ) Net deferred tax asset, noncurrent 895,792 1,132,356 Fixed assets and intangibles (5,496,103 ) (5,729,274 ) Investments (71,167 ) (113,628 ) Prepaid expenses (7,543 ) (8,105 ) Fair value adjustments related to debt and deferred financing costs (40,083 ) (40,215 ) Other (4,833 ) (10,420 ) Deferred tax liability, noncurrent (5,619,729 ) (5,901,642 ) Total net deferred tax liability $ (4,723,937 ) $ (4,769,286 )
Reconciliation of Unrecognized Tax Benefits Associated with Uncertain Tax Positions, Excluding Associated Deferred Tax Benefits and Accrued Interest	A reconciliation of the beginning and ending amount of unrecognized tax benefits associated with uncertain tax positions, excluding associated deferred tax benefits and accrued interest, is as follows: Balance at December 31, 2016 $ 4,025 Increases related to prior year tax positions 11 Balance at December 31, 2017 4,036 Decreases related to prior year tax positions (1,456 ) Balance at December 31, 2018 $ 2,580
Cablevision Systems Corporation And Subsidiaries
Income Tax Expense (Benefit) Attributable to Continuing Operations	Income tax expense attributable to the Company's continuing operations consists of the following components: January 1 to June 20, 2016 Year Ended December 31, 2015 Current expense: Federal $ 6,473 $ 4,844 State 1,917 15,869 8,390 20,713 Deferred (benefit) expense: Federal 93,253 97,927 State 22,897 35,469 116,150 133,396 Tax (benefit) expense relating to uncertain tax positions 308 763 Income tax expense $ 124,848 $ 154,872
Reconciliation of Effective Tax Rate from Continuing Operations	The income tax (benefit) expense attributable to the Company's continuing operations differs from the amount derived by applying the statutory federal rate to pretax income principally due to the effect of the following items: January 1 to June 20, 2016 Year Ended December 31, 2015 Federal tax expense at statutory rate $ 100,926 $ 119,931 State income taxes, net of federal impact 14,825 18,874 Changes in the valuation allowance 86 (902 ) Changes in the state rates used to measure deferred taxes, net of federal impact — (1,006 ) Tax expense (benefit) relating to uncertain tax positions 178 574 New York tax reform — 16,334 Non-deductible officers' compensation 462 846 Non-deductible merger transaction costs 9,392 — Other non-deductible expenses 1,337 3,099 Research credit (850 ) (2,630 ) Adjustment to prior year tax expense — (515 ) Other, net (1,508 ) 267 Income tax expense $ 124,848 $ 154,872
Significant Components of Deferred Tax Assets and Liabilities	The tax effects of temporary differences which give rise to significant portions of deferred tax assets or liabilities and the corresponding valuation allowance at December 31, 2015 are as follows. Deferred Tax Asset (Liability) Current NOLs and tax credit carry forwards $ 76,007 Compensation and benefit plans 80,831 Allowance for doubtful accounts 2,196 Merger transaction costs 7,332 Inventory 7,135 Other 26,216 Deferred tax asset 199,717 Valuation allowance (2,098 ) Net deferred tax asset, current 197,619 Investments (163,396 ) Prepaid expenses (19,627 ) Deferred tax liability, current (183,023 ) Net deferred tax asset, current $ 14,596 Noncurrent NOLs and tax credit carry forwards 36,866 Compensation and benefit plans 97,005 Partnership investments 123,529 Investments 9,798 Other 9,201 Deferred tax asset 276,399 Valuation allowance (2,816 ) Net deferred tax asset, noncurrent 273,583 Fixed assets and intangibles (978,418 ) Deferred tax liability, noncurrent (978,418 ) Net deferred tax liability, noncurrent (704,835 ) Total net deferred tax liability $ (690,239 )
Reconciliation of Unrecognized Tax Benefits Associated with Uncertain Tax Positions, Excluding Associated Deferred Tax Benefits and Accrued Interest	A reconciliation of the beginning and ending amount of unrecognized tax benefits associated with uncertain tax positions, excluding associated deferred tax benefits and accrued interest, is as follows: Balance at December 31, 2015 $ 4,022 Increases related to prior year tax positions 3 Increases related to current year tax positions 6 Balance at June 20, 2016 $ 4,031

CVC - BENEFIT PLANS (Tables)

CVC - BENEFIT PLANS (Tables)	12 Months Ended
	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Components of Net Benefit Cost for defined Benefit Plans	Components of the benefit costs, recorded in other income (expense), net, for the Defined Benefit Plans for the years ended December 31, 2018 , 2017 and 2016, is as follows: Years Ended December 31, 2018 2017 2016 Interest cost $ 9,248 $ 11,786 $ 6,946 Expected return on plan assets, net (987 ) (4,905 ) (3,880 ) Curtailment loss — 3,137 231 Settlement loss (income) (reclassified from accumulated other comprehensive loss) (a) 1,268 1,845 (154 ) Non-operating pension costs $ 9,529 $ 11,863 $ 3,143 (a) As a result of benefit payments to terminated or retired individuals exceeding the service and interest costs for the Pension Plan and the Excess Cash Balance Pension Plan during the years ended December 31, 2018 and 2017 and during the period June 21, 2016 through December 31, 2016, the Company recognized non-cash settlement losses that represent the acceleration of the recognition of a portion of the previously unrecognized actuarial losses recorded in accumulated other comprehensive loss on the Company’s consolidated balance sheets relating to these plans.
Plan Assumptions for Defined Benefit Plans	Weighted-average assumptions used to determine pension costs (made at the beginning of the year) and benefit obligations (made at the end of the year) for the Defined Benefit Plans are as follows: Benefit Costs Benefit Obligations at December 31, For the Year Ended December 31, 2018 For the Year Ended December 31, 2017 For the Period June 21, 2016 to December 31, 2016 2018 2017 Discount rate (a) 3.87 % 3.69 % 3.53 % 4.20 % 3.50 % Rate of increase in future compensation levels — % — % — % — % — % Expected rate of return on plan assets (Pension Plan only) 3.67 % 3.90 % 3.97 % N/A N/A (a) The discount rates of 3.87% 3.69% and 3.53% for the years ended December 31, 2018 and 2017 and for the period June 21, 2016 through December 31, 2016, represents the average of the quarterly discount rates used to remeasure the Company's projected benefit obligation and benefit costs in connection with the recognition of settlement losses discussed above.
Fair Values of the Pension Plan Assets by Asset Category	The weighted average asset allocations of the Pension Plan at December 31, 2018 and 2017 were as follows: Plan Assets at December 31, 2018 2017 Asset Class: Mutual funds 29 % 32 % Fixed income securities 65 66 Cash equivalents and other 6 2 100 % 100 % The fair values of the assets of the Pension Plan at December 31, 2018 by asset class are as follows: Asset Class Level I Level II Level III Total Mutual funds $ 49,140 $ — $ — $ 49,140 Fixed income securities held in a portfolio: Foreign issued corporate debt — 14,002 — 14,002 U.S. corporate debt — 43,190 — 43,190 Government debt — 3,988 — 3,988 U.S. Treasury securities — 38,657 — 38,657 Asset-backed securities — 8,907 — 8,907 Other — 205 — 205 Cash equivalents (a) 4,343 3,187 — 7,530 Total (b) $ 53,483 $ 112,136 $ — $ 165,619 (a) A significant portion represents an investment in a short-term investment fund that invests primarily in securities of high quality and low risk. (b) Excludes cash and net receivables relating to the sale of securities that were not settled as of December 31, 2018 . The fair values of the assets of the Pension Plan at December 31, 2017 by asset class are as follows: Asset Class Level I Level II Level III Total Mutual funds $ 61,833 $ — $ — $ 61,833 Fixed income securities held in a portfolio: Foreign issued corporate debt — 10,721 — 10,721 U.S. corporate debt — 39,992 — 39,992 Government debt — 4,645 — 4,645 U.S. Treasury securities — 62,601 — 62,601 Asset-backed securities — 10,978 — 10,978 Cash equivalents (a) 6,691 2,782 — 9,473 Total (b) $ 68,524 $ 131,719 $ — $ 200,243 (a) A significant portion represents an investment in a short-term investment fund that invests primarily in securities of high quality and low risk. (b) Excludes cash and net payables relating to the purchase of securities that were not settled as of December 31, 2017 .
Cablevision Systems Corporation And Subsidiaries
Defined Benefit Plan Disclosure [Line Items]
Funded Status for All Qualified and Non-Qualified defined Benefit Plans	Summarized below is the funded status and the amounts recorded on the Company's consolidated balance sheets for all of the Company's Defined Benefit Plans at December 31, 2015: Change in projected benefit obligation: Projected benefit obligation at beginning of year $ 430,846 Service cost 344 Interest cost 15,523 Actuarial (gain) loss (14,912 ) Curtailments — Benefits paid (27,838 ) Projected benefit obligation at end of year 403,963 Change in plan assets: Fair value of plan assets at beginning of year 303,676 Actual return (loss) on plan assets, net (3,921 ) Employer contributions 25,929 Benefits paid (27,838 ) Fair value of plan assets at end of year 297,846 Unfunded status at end of year $ (106,117 )
Net Funded Status Relating to Defined Benefit Plans	The Company's net funded status relating to its Defined Benefit Plans at December 31, 2015 are as follows: Defined Benefit Plans $ (106,117 ) Less: Current portion related to nonqualified plans 6,889 Long-term defined benefit plan obligations $ (99,228 )
Components of Net Benefit Cost for defined Benefit Plans	Components of the net periodic benefit cost, recorded in other operating expenses, for the Defined Benefit Plans for the period January 1, 2016 to June 20, 2016 and for the year ended December 31, 2015, are as follows: January 1, 2016 to June 20, 2016 Year ended December 31, 2015 Service cost $ — $ 344 Interest cost 7,130 15,523 Expected return on plan assets, net (3,565 ) (8,297 ) Recognized actuarial loss (reclassified from accumulated other comprehensive loss) (1,446 ) 1,294 Settlement (income) loss (reclassified from accumulated other comprehensive loss) (a) 1,655 3,822 Net periodic benefit cost $ 3,774 $ 12,686 (a) As a result of benefit payments to terminated or retired individuals exceeding the service and interest costs for the Pension Plan and the Excess Cash Balance Pension Plan during the period January 1, 2016 through June 20, 2016, and year ended December 31, 2015, the Company recognized a non-cash settlement loss that represented the acceleration of the recognition of a portion of the previously unrecognized actuarial losses recorded in accumulated other comprehensive loss on the Company’s consolidated balance sheets relating to these plans.
Plan Assumptions for Defined Benefit Plans	Weighted-average assumptions used to determine net periodic cost (made at the beginning of the year) and benefit obligations (made at the end of the year) for the Defined Benefit Plans are as follows: Weighted-Average Assumptions Net Periodic Benefit Cost Benefit Obligations January 1, 2016 to June 20, 2016 Year ended December 31, 2015 December 31, 2015 Discount rate (a) 3.76 % 3.83 % 3.94 % Rate of increase in future compensation levels — % — % — % Expected rate of return on plan assets (Pension Plan only) 3.97 % 4.03 % N/A (a) The discount rates of 3.76% and 3.83% , for the period January 1, 2016 through June 20, 2016, and year ended December 31, 2015, respectively, represent the average of the quarterly discount rates used to remeasure the Company's projected benefit obligation and net periodic benefit cost in connection with the recognition of settlement losses discussed above.
Weighted Average Asset Allocations of Pension Plan	The weighted average asset allocations of the Pension Plan at December 31, 2015 are as follows: Plan Assets at 2015 Asset Class: Mutual funds 39 % Fixed income securities 61 Cash equivalents and other — 100 %
Fair Values of the Pension Plan Assets by Asset Category	The fair values of the assets of the Pension Plan at December 31, 2015 by asset class are as follows: Asset Class Level I Level II Level III Total Mutual funds $ 117,174 $ — $ — $ 117,174 Fixed income securities held in a portfolio: Foreign issued corporate debt — 12,825 — 12,825 U.S. corporate debt — 54,005 — 54,005 Government debt — 8,273 — 8,273 U.S. Treasury securities — 90,414 — 90,414 Asset-backed securities — 18,563 — 18,563 Cash equivalents (a) 893 — — 893 Total (b) $ 118,067 $ 184,080 $ — $ 302,147 (a) Represents an investment in a money market fund. (b) Excludes cash and net payables relating to the sale of securities that were not settled as of December 31, 2015.

CVC - EQUITY AND LONG-TERM IN_2

CVC - EQUITY AND LONG-TERM INCENTIVE PLANS (Tables)	12 Months Ended
	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Schedule of assumptions were used to calculate the fair values of stock option awards granted	Year Ended December 31, 2018 2017 Risk-free interest rate 2.74% 2.30% Expected life (in years) 6.49 6.44 Dividend yield —% —% Volatility 35.72% 33.95% Grant date fair value $6.91 $8.77
Summary of activity relating of stock options	The following table summarizes activity related to employee stock options: Shares Under Option Weighted Average Exercise Price Per Share Weighted Average Remaining Contractual Term (in years) Time Vesting Performance Based Vesting Aggregate Intrinsic Value (a) Balance at December 31, 2017 5,110,747 — $ 17.45 9.97 $ 8,331 Granted 6,753,659 95,953 17.58 Forfeited (634,238 ) (22,314 ) 17.92 Balance at December 31, 2018 11,230,168 73,639 17.50 9.47 (11,057 ) Options exercisable at December 31, 2018 — — — — — (a) The aggregate intrinsic value is calculated as the difference between the exercise price and the closing price of the Company's Class A common stock at the respective date.
Cablevision Systems Corporation And Subsidiaries
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Summary of share-based compensation expense	The following table presents the share-based compensation expense recognized by the Company as other operating expenses: January 1, 2016 to June 20, 2016 Year ended December 31, 2015 Stock options $ 3,848 $ 9,159 Restricted shares and restricted stock units 20,930 51,162 Share-based compensation related to equity classified awards 24,778 60,321 Other share-based compensation 453 4,965 Total share-based compensation $ 25,231 $ 65,286
Schedule of assumptions were used to calculate the fair values of stock option awards granted	The following assumptions were used to calculate the fair values of stock option awards granted in the first quarter of 2015: 2015 Risk-free interest rate 1.82 % Expected life (in years) 8 Dividend yield 3.63 % Volatility 39.98 % Grant date fair value $ 5.45
Summary of activity relating of stock options	The following table summarizes activity relating to Company employees who held Cablevision stock options for the period January 1, 2016 to June 20, 2016 and for the year ended December 31, 2015: Shares Under Option Weighted Average Exercise Price Per Share Weighted Average Remaining Contractual Term (in years) Time Vesting Options Performance Based Vesting Options Aggregate Intrinsic Value (a) Balance, December 31, 2014 5,097,666 7,633,500 $ 14.41 7.17 $ 79,347 Granted 2,000,000 — 19.17 Exercised (353,666 ) (1,024,283 ) 12.84 Balance, December 31, 2015 6,744,000 6,609,217 15.28 6.80 221,900 Exercised (744,000 ) (728,517 ) 13.97 Balance, June 20, 2016 6,000,000 5,880,700 $ 15.45 (a) The aggregate intrinsic value is calculated as the difference between (i) the exercise price of the underlying award and (ii) the quoted price of CNYG Class A common stock on December 31, 2015, as indicated.
Summary of activity relating of restricted shares and restricted stock units	The following table summarizes activity relating to Company employees who held Cablevision restricted shares and restricted stock units for the period January 1, 2016 to June 20, 2016 and for the year ended December 31, 2015: Number of Restricted Shares Number of Performance Restricted Shares Number of Performance Based Restricted Stock Units ("PSU") (a) Weighted Average Fair Value Per Share at Date of Grant Unvested award balance, December 31, 2014 5,314,870 2,035,300 — $ 15.46 Granted 1,747,870 584,400 1,851,700 19.43 Vested (1,598,363 ) (739,600 ) — 14.48 Awards forfeited (496,629 ) — (79,270 ) 17.28 Unvested award balance, December 31, 2015 4,967,748 1,880,100 1,772,430 17.53 Vested (2,239,167 ) (753,296 ) — 15.35 Awards forfeited (85,900 ) — (47,490 ) 18.38 Unvested award balance, June 20, 2016 2,642,681 1,126,804 1,724,940 (a) The PSUs entitled the employee to shares of CNYG common stock up to 150% of the number of PSUs granted depending on the level of achievement of the specified performance criteria. If the minimum performance threshold was not met, no shares were issued. Accrued dividends were paid to the extent that a PSU vested and the related stock was issued.

CVC - AFFILIATE AND RELATED P_2

CVC - AFFILIATE AND RELATED PARTY TRANSACTIONS - (Tables)	12 Months Ended
	Dec. 31, 2018
Related Party Transaction [Line Items]
Summary of related party transactions	The following table summarizes the revenue and charges related to services provided to or received from subsidiaries of Altice Europe and Newsday: Years Ended December 31, 2018 2017 2016 Revenue $ 2,575 $ 1,100 $ 1,086 Operating expenses: Programming and other direct costs $ (7,261 ) $ (4,176 ) $ (1,947 ) Other operating expenses, net (16,307 ) (33,140 ) (18,854 ) Operating expenses, net (23,568 ) (37,316 ) (20,801 ) Interest expense (see Note 11) (a) (600 ) (90,405 ) (112,712 ) Other income. net 149 — — Loss on extinguishment of debt and write-off of deferred financing costs (see Note 11) — (513,723 ) — Net charges $ (21,444 ) $ (640,344 ) $ (132,427 ) Capital Expenditures $ 14,951 $ 22,012 $ 45,886 (a) The 2016 amount includes $10,155 related to Holdco Notes prior to the exchange in addition to the interest related to notes payable to affiliates and related parties discussed in Note 11. In connection with the Company's IPO in June 2017, the Company converted the notes payable to affiliates and related parties into shares of the Company’s common stock at the IPO price. Aggregate amounts that were due from and due to related parties are summarized below: December 31, 2018 2017 Due from: CVC 3 (a) $ 13,100 $ 12,951 Newsday (b) 490 2,713 Altice Europe (b) 1,271 33 Altice Dominican Republic (b) 2,550 — i24NEWS (b) — 4,036 Other Altice Europe subsidiaries (b) 146 31 $ 17,557 $ 19,764 Due to: Altice Europe (c) $ 15,235 $ — Newsday (b) 22 33 Altice Labs S.A. (d) 4,864 7,354 Other Altice Europe subsidiaries (d) 5,975 3,611 $ 26,096 $ 10,998 (a) Represents interest on senior notes paid by the Company on behalf of Altice US Finance S.A., which merged into CVC 3 in 2018. (b) Represents amounts paid by the Company on behalf of or for services provided to the respective related party and for Newsday, the net amounts due from the related party also include charges for certain transition services provided. (c) Includes $13,250 related to the agreement discussed above. (d) Represents amounts due to affiliates for the purchase of equipment and advertising services, as well as reimbursement for payments made on our behalf.
Cablevision Systems Corporation And Subsidiaries
Related Party Transaction [Line Items]
Summary of related party transactions	All costs incurred on behalf of these related parties were reimbursed to the Company. Aggregate amounts that were due from and due to AMC Networks, Madison Square Garden and MSG Networks and other affiliates at December 31, 2015 (Predecessor) is summarized below: December 31, 2015 Amounts due from affiliates $ 767 Amounts due to affiliates 29,729 The following table summarizes the revenue and charges (credits) related to services provided to or received from AMC Networks, Madison Square Garden Company and MSG Networks for the Predecessor periods: January 1, 2016 to June 20, 2016 Year Ended December 31, 2015 Revenue $ 2,088 $ 5,343 Operating expenses: Programming and other direct costs, net of credits $ 84,636 $ 176,909 Other operating expenses, net of credits 2,182 5,372 Operating expenses, net 86,818 182,281 Net charges $ 84,730 $ 176,938

CVC - INTERIM FINANCIAL INFOR_2

CVC - INTERIM FINANCIAL INFORMATION (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2018
Selected Quarterly Financial Information
Selected Quarterly Financial Information	The following is a summary of the Company's selected quarterly financial data: Three Months Ended March 31, 2018 June 30, September 30, December 31, Total Residential: Pay TV $ 1,033,708 $ 1,034,404 $ 1,054,667 $ 1,033,649 $ 4,156,428 Broadband 701,621 712,202 729,907 743,725 2,887,455 Telephony 166,038 163,499 161,351 162,007 652,895 Business services and wholesale 333,090 337,388 344,193 348,087 1,362,758 Advertising 87,582 109,898 123,066 162,103 482,649 Other 7,675 6,762 4,617 5,369 24,423 Revenue 2,329,714 2,364,153 2,417,801 2,454,940 9,566,608 Operating expenses (2,016,676 ) (2,029,094 ) (1,912,243 ) (1,926,216 ) (7,884,229 ) Operating income $ 313,038 $ 335,059 $ 505,558 $ 528,724 $ 1,682,379 Net income (loss) $ (128,949 ) $ (98,004 ) $ 33,739 $ 213,808 $ 20,594 Net loss (income) attributable to noncontrolling interests (2 ) 149 (1,186 ) (722 ) (1,761 ) Net income (loss) attributable to Altice USA Inc.'s stockholders $ (128,951 ) $ (97,855 ) $ 32,553 $ 213,086 $ 18,833 Basic and diluted net income (loss) per share attributable to Altice USA Inc.'s stockholders $ (0.17 ) $ (0.13 ) $ 0.04 $ 0.30 $ 0.03 Three Months Ended March 31, 2017 June 30, September 30, December 31, Total Residential: Pay TV $ 1,083,878 $ 1,071,163 $ 1,069,946 $ 1,049,135 $ 4,274,122 Broadband 625,918 642,620 658,278 681,779 2,608,595 Telephony 180,961 178,261 172,479 169,064 700,765 Business services and wholesale 319,420 323,641 324,642 330,510 1,298,213 Advertising 83,361 97,501 89,292 121,712 391,866 Other 8,721 9,176 7,884 7,608 33,389 Revenue 2,302,259 2,322,362 2,322,521 2,359,808 9,306,950 Operating expenses (2,052,149 ) (2,069,094 ) (2,201,946 ) (2,142,753 ) (8,465,942 ) Operating income $ 250,110 $ 253,268 $ 120,575 $ 217,055 $ 841,008 Net income (loss) $ (76,188 ) $ (479,939 ) $ (192,434 ) $ 2,243,325 $ 1,494,764 Net income attributable to noncontrolling interests (237 ) (365 ) (135 ) (850 ) (1,587 ) Net income (loss) attributable to Altice USA, Inc. stockholders $ (76,425 ) $ (480,304 ) $ (192,569 ) $ 2,242,475 $ 1,493,177 Basic and diluted net income (loss) per share attributable to Altice USA Inc.'s stockholders $ (0.12 ) $ (0.73 ) $ (0.26 ) $ 3.04 $ 2.15 (a) In the fourth quarter of 2018, the Company recorded a non-cash deferred tax benefit of $52,915 based on a remeasurement of the Company's net deferred tax liability. See Note 14 to the consolidated financial statements for further details. (b) Pursuant to the enactment of the Tax Reform on December 22, 2017, the Company recorded a non-cash deferred tax benefit of $2,332,677 to remeasure the net deferred tax liability to adjust for the reduction in the corporate federal income tax rate 35% to 21% which was effective on January 1, 2018. The following is a summary of the Company's selected quarterly financial data: Predecessor 2016: March 31, 2016 April 1 to June 20, 2016 Revenue $ 1,645,890 $ 1,491,714 Operating expenses (1,394,635 ) (1,267,663 ) Operating income $ 251,255 $ 224,051 Net income $ 94,311 $ 69,201 Net loss attributable to noncontrolling interests 66 170 Net income attributable to Cablevision Systems Corporation stockholders $ 94,377 $ 69,371 Basic income per share attributable to Cablevision Systems Corporation stockholders: Income from continuing operations, net of income taxes $ 0.35 $ 0.25 Loss from discontinued operations, net of income taxes $ — $ — Net income $ 0.35 $ 0.25 Diluted income per share attributable to Cablevision Systems Corporation stockholders: Income from continuing operations, net of income taxes $ 0.34 $ 0.25 Loss from discontinued operations, net of income taxes $ — $ — Net income $ 0.34 $ 0.25 Amounts attributable to Cablevision Systems Corporation stockholders: Income from continuing operations, net of income taxes $ 94,377 $ 69,371 Loss from discontinued operations, net of income taxes — — Net income $ 94,377 $ 69,371 Predecessor 2015: March 31, 2015 June 30, 2015 September 30, 2015 December 31, 2015 Total 2015 Revenue $ 1,622,352 $ 1,661,940 $ 1,624,828 $ 1,636,425 $ 6,545,545 Operating expenses (1,398,601 ) (1,417,476 ) (1,441,712 ) (1,439,285 ) (5,697,074 ) Operating income $ 223,751 $ 244,464 $ 183,116 $ 197,140 $ 848,471 Income from continuing operations, net of income taxes $ 54,901 $ 75,676 $ 23,431 $ 33,781 $ 187,789 Income (loss) from discontinued operations, net of income taxes (10,502 ) — (406 ) (1,633 ) (12,541 ) Net income 44,399 75,676 23,025 32,148 175,248 Net loss (income) attributable to noncontrolling interests 234 (81 ) 78 (30 ) 201 Net income attributable to Cablevision Systems Corporation stockholders $ 44,633 $ 75,595 $ 23,103 $ 32,118 $ 175,449 Basic income per share attributable to Cablevision Systems Corporation stockholders: Income from continuing operations, net of income taxes $ 0.21 $ 0.28 $ 0.09 $ 0.12 $ 0.70 Income (loss) from discontinued operations, net of income taxes $ (0.04 ) $ — $ — $ (0.01 ) $ (0.05 ) Net income $ 0.17 $ 0.28 $ 0.09 $ 0.12 $ 0.65 Diluted income per share attributable to Cablevision Systems Corporation stockholders: Income from continuing operations, net of income taxes $ 0.20 $ 0.27 $ 0.08 $ 0.12 $ 0.68 Income (loss) from discontinued operations, net of income taxes $ (0.04 ) $ — $ — $ (0.01 ) $ (0.05 ) Net income $ 0.16 $ 0.27 $ 0.08 $ 0.12 $ 0.63 Amounts attributable to Cablevision Systems Corporation stockholders: Income from continuing operations, net of income taxes $ 55,135 $ 75,595 $ 23,509 $ 33,751 $ 187,990 Income (loss) from discontinued operations, net of income taxes (10,502 ) — (406 ) (1,633 ) (12,541 ) Net income $ 44,633 $ 75,595 $ 23,103 $ 32,118 $ 175,449

CVC - BUSINESS COMBINATION (Tab

CVC - BUSINESS COMBINATION (Tables)	12 Months Ended
	Dec. 31, 2018
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The following table provides the allocation of the total purchase price of $9,958,323 to the identifiable tangible and intangible assets and liabilities of Cablevision based on their respective fair values. The remaining useful lives represent the period over which acquired tangible and intangible assets with a finite life are being depreciated or amortized. Fair Values Estimated Useful Lives Current assets $ 1,923,071 Accounts receivable 271,305 Property, plant and equipment 4,864,621 2-18 years Goodwill 5,842,172 Indefinite-lived cable television franchises 8,113,575 Indefinite-lived Customer relationships 4,850,000 8 to 18 years Trade names (a) 1,010,000 12 years Amortizable intangible assets 23,296 1-15 years Other non-current assets 748,998 Current liabilities (2,311,201 ) Long-term debt (8,355,386 ) Deferred income taxes. (6,832,773 ) Other non-current liabilities (189,355 ) Total $ 9,958,323 (a) See Note 10 for additional information regarding a change in the remaining estimated useful lives of the Company's trade names.
Schedule of future amortization expense	The following table sets forth the estimated amortization expense on intangible assets for the periods presented: Estimated amortization expense Year Ending December 31, 2019 $ 778,922 Year Ending December 31, 2020 697,316 Year Ending December 31, 2021 617,794 Year Ending December 31, 2022 532,998 Year Ending December 31, 2023 371,198
Business Acquisition, Pro Forma Information	The following table presents the unaudited pro forma revenue and net loss for the period presented as if the Cablevision Acquisition had occurred on January 1, 2016: Year Ended December 31, 2016 Revenue $ 9,154,816 Net loss $ (721,257 )
Cablevision Systems Corporation And Subsidiaries
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The following table provides the preliminary allocation of the total purchase price of $9,958,323 to the identifiable tangible and intangible assets and liabilities of Cablevision based on preliminary fair value information currently available, which is subject to change within the measurement period (up to one year from the acquisition date). Estimates of Fair Values (As of December 31, 2016) Estimated Useful Lives Current assets $ 1,923,071 Accounts receivable 271,305 Property, plant and equipment 4,864,621 2-18 years Goodwill 5,838,959 Indefinite-lived cable television franchises 8,113,575 Indefinite-lived Customer relationships 4,850,000 8 to 18 years Trade names 1,010,000 12 years Amortizable intangible assets 23,296 1-15 years Other non-current assets 748,998 Current liabilities (2,305,954 ) Long-term debt (8,355,386 ) Deferred income taxes. (6,834,807 ) Other non-current liabilities (189,355 ) Total $ 9,958,323
Schedule of future amortization expense	The following table sets forth the estimated amortization expense on the intangible assets recorded in the connection with the Merger for the years ending December 31: Estimated amortization expense Year Ending December 31, 2017 $ 701,908 Year Ending December 31, 2018 655,409 Year Ending December 31, 2019 609,245 Year Ending December 31, 2020 562,613 Year Ending December 31, 2021 515,430
Business Acquisition, Pro Forma Information	The unaudited pro forma revenue, loss from continuing operations and net loss for the years ended December 31, 2015, as if the Merger had occurred on January 1, 2015, are as follows: Revenue $ 6,545,545 Loss from continuing operations $ (740,115 ) Net loss $ (752,656 )

DESCRIPTION OF BUSINESS AND R_2

DESCRIPTION OF BUSINESS AND RELATED MATTERS (Details)

Jun. 08, 2018USD ($)shares

Jun. 06, 2018USD ($)

May 22, 2018$ / shares

May 31, 2017USD ($)

Jun. 21, 2016USD ($)$ / shares

Dec. 21, 2015USD ($)

Jan. 31, 2018USD ($)

Jul. 31, 2017USD ($)

Jun. 30, 2017USD ($)$ / sharesshares

Dec. 31, 2018USD ($)segment$ / sharesshares

Dec. 31, 2017USD ($)$ / sharesshares

Dec. 31, 2016USD ($)$ / shares

Jan. 08, 2018USD ($)

Dec. 31, 2015USD ($)

Oct. 31, 2015USD ($)

Sep. 16, 2015$ / shares

Oct. 12, 2012USD ($)

Business Acquisition [Line Items]

Number of segments | segment

1

Principal amount

$ 16,289,245,000

Principal Amount

$ 5,972,500,000

4,693,675,000

$ 480,000,000

Goodwill

8,012,416,000

8,019,861,000

$ 7,992,700,000

$ 2,040,402,000

Outstanding debt

15,359,561,000

15,860,432,000

Conversion of debt

$ 0

$ 2,264,252,000

$ 0

Common stock, shares outstanding (in shares) | shares

709,040,286

Cash dividends declared per common share (in dollars per share) | $ / shares

$ 2.035

$ 2.035

$ 1.2927908856

$ 0.69

Dividend paid

$ 1,499,935,000

$ 1,499,935,000

Share repurchase authorized

$ 2,000,000,000

Shares repurchased (in shares) | shares

28,028,680

Value of shares repurchased

$ 500,000,000

Availability remaining under its stock repurchase program

$ 1,500,000,000

Cablevision Systems Corp.

Business Acquisition [Line Items]

Share price (in dollars per share) | $ / shares

$ 34.90

Consideration transfered

$ 9,958,323,000

Percentage of shares acquired

30.00%

Goodwill

$ 5,842,172,000

Altice Technical Services

Business Acquisition [Line Items]

Consideration transfered

$ 1

Percentage of shares acquired

70.00%

Goodwill

$ (23,101,000)

Common Class A

Business Acquisition [Line Items]

Common stock, par value (in dollars per share) | $ / shares

$ 0.01

$ 0.01

Common stock, shares outstanding (in shares) | shares

496,064,027

246,982,292

Shares repurchased (in shares) | shares

28,028,680

Common Class A | Cablevision Systems Corp.

Business Acquisition [Line Items]

Common stock, par value (in dollars per share) | $ / shares

$ 0.01

Common Class B

Business Acquisition [Line Items]

Common stock, par value (in dollars per share) | $ / shares

$ 0.01

$ 0.01

Common stock conversion ratio

1

Common stock, shares outstanding (in shares) | shares

212,976,259

490,086,674

Shares repurchased (in shares) | shares

0

Common Class B | Cablevision Systems Corp.

Business Acquisition [Line Items]

Common stock, par value (in dollars per share) | $ / shares

$ 0.01

IPO

Business Acquisition [Line Items]

Percentage of ownership

98.20%

IPO | Common Class A

Business Acquisition [Line Items]

Number of shares issued (in shares) | shares

71,724,139

Price per share (in dollars per share) | $ / shares

$ 30

Percentage of ownership

70.20%

Proceeds form issuance of shares

$ 362,069,000

Underwriting discount and expenses

$ 12,998,000

Consideration received on transaction, used to repay long term debt

$ 350,120,000

Over-Allotment Option | Common Class A

Business Acquisition [Line Items]

Number of shares issued (in shares) | shares

7,781,110

CVC 2 B.V., CIE Management IX Limited | Cablevision Systems Corp.

Business Acquisition [Line Items]

Consideration transfered

$ 1,000,000,000

Altice USA | IPO | Common Class A

Business Acquisition [Line Items]

Number of shares issued (in shares) | shares

12,068,966

Existing Shareholders | IPO | Common Class A

Business Acquisition [Line Items]

Number of shares issued (in shares) | shares

59,655,173

Co-investor

Business Acquisition [Line Items]

Conversion of debt

$ 525,000,000

Subsidiary of Common Parent

Business Acquisition [Line Items]

Conversion of debt

$ 1,225,000,000

Senior Notes

Business Acquisition [Line Items]

Principal amount

$ 15,733,145,000

Notes payable | Cablevision Systems Corp.

Business Acquisition [Line Items]

Principal amount

1,750,000,000

10.875% Notes due October 15, 2025 | Senior Notes

Business Acquisition [Line Items]

Principal amount

$ 1,684,221,000

$ 1,684,221,000

Stated interest rate

10.875%

10.875%

Outstanding debt

$ 315,779,000

$ 1,663,027,000

1,661,135,000

Gain (loss) on extinguishment of debt

$ (34,341,000)

10.125% Notes due January 15, 2023 | Senior Notes

Business Acquisition [Line Items]

Principal amount

$ 1,800,000,000

1,800,000,000

Stated interest rate

10.125%

Outstanding debt

$ 1,781,424,000

1,777,914,000

6.625% Notes due October 15, 2025 | Term Loan

Business Acquisition [Line Items]

Principal amount

$ 1,000,000,000

1,000,000,000

Stated interest rate

6.625%

Outstanding debt

$ 988,052,000

986,717,000

Notes Payable at 10.75% | Notes payable | Cablevision Systems Corp.

Business Acquisition [Line Items]

Principal amount

$ 875,000,000

Stated interest rate

10.75%

Notes Payable at 11% | Notes payable | Cablevision Systems Corp.

Business Acquisition [Line Items]

Principal amount

$ 875,000,000

Stated interest rate

11.00%

Neptune Finco Corp. | 10.875% Notes due October 15, 2025 | Senior Notes | Cablevision Systems Corp.

Business Acquisition [Line Items]

Principal amount

$ 2,000,000,000

Stated interest rate

10.875%

Neptune Finco Corp. | Senior Secured Credit Facilities | Term Loan | Cablevision Systems Corp.

Business Acquisition [Line Items]

Principal amount

$ 3,800,000,000

Neptune Finco Corp. | 10.125% Notes due January 15, 2023 | Senior Notes | Cablevision Systems Corp.

Business Acquisition [Line Items]

Principal amount

$ 1,800,000,000

Stated interest rate

10.125%

Neptune Finco Corp. | 6.625% Notes due October 15, 2025 | Senior Notes | Cablevision Systems Corp.

Business Acquisition [Line Items]

Principal amount

$ 1,000,000,000

Stated interest rate

6.625%

Revolving Credit Facility | Neptune Finco Corp. | Senior Secured Credit Facilities | Cablevision Systems Corp.

Business Acquisition [Line Items]

Principal Amount

$ 2,000,000,000

Affiliates | Notes payable

Business Acquisition [Line Items]

Principal amount

$ 1,750,000

Affiliates | Notes payable | Cablevision Systems Corp.

Business Acquisition [Line Items]

Principal amount

$ 1,750,000,000

Altice N.V. Distribution | Altice N.V.

Business Acquisition [Line Items]

Controlling interest percent

67.20%

Common stock conversion ratio

0.4163

Distribution cap

50.00%

Management advisory and consulting fee

$ 30,000,000

$ 30,000,000

Altice N.V. Distribution | Altice N.V. | Common Class A

Business Acquisition [Line Items]

Common stock, shares outstanding (in shares) | shares

489,384,523

Altice N.V. Distribution | Altice N.V. | Common Class B

Business Acquisition [Line Items]

Common stock, shares outstanding (in shares) | shares

247,684,443

Retained Earnings

Business Acquisition [Line Items]

Decrease in connection with dividends paid

536,224,000

Additional Paid-in Capital

Business Acquisition [Line Items]

Decrease in connection with dividends paid

$ 963,711,000

Value of shares repurchased

$ 499,720,000

SUMMARY OF SIGNIFICANT ACCOUN_4

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) shares in Thousands, $ in Thousands	Jun. 06, 2018USD ($)	Jun. 30, 2017USD ($)	Mar. 31, 2017USD ($)	Dec. 31, 2018USD ($)shares	Dec. 31, 2017USD ($)voteshares	Dec. 31, 2016USD ($)
Class of Stock [Line Items]
Advertising costs				$ 240,273	$ 224,120	$ 135,513
Dividend paid	$ 1,499,935			1,499,935
Cash distributions to shareholders		$ 839,700			840,035	445,176
Payments of dividends			$ 79,617	$ 1,499,935	$ 919,317	365,559
Antidilutive securities | shares				6,292,000	14,000
Common Class A
Class of Stock [Line Items]
Common stock number of votes per share | vote					1
Common Class B
Class of Stock [Line Items]
Common stock number of votes per share | vote					25
Common stock conversion ratio					1
Minimum | Customer Contracts
Class of Stock [Line Items]
Finite-lived intangible asset, useful life				3 years
Maximum | Customer Contracts
Class of Stock [Line Items]
Finite-lived intangible asset, useful life				5 years
Franchise
Class of Stock [Line Items]
Franchise fees and other taxes and fees				$ 257,467	$ 259,075	$ 154,732

SUMMARY OF SIGNIFICANT ACCOUN_5

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Contract Asset and Liability (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Accounting Policies [Abstract]
Contract assets	$ 26,405	$ 24,329
Deferred revenue	$ 190,056	$ 117,679

SUMMARY OF SIGNIFICANT ACCOUN_6

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation of Revenue [Line Items]
Total revenue	$ 2,454,940	$ 2,417,801	$ 2,364,153	$ 2,329,714	$ 2,359,808	$ 2,322,521	$ 2,322,362	$ 2,302,259	$ 9,566,608	$ 9,306,950	$ 6,017,212
Pay TV
Disaggregation of Revenue [Line Items]
Total revenue	1,033,649	1,054,667	1,034,404	1,033,708	1,049,135	1,069,946	1,071,163	1,083,878	4,156,428	4,274,122	2,788,873
Broadband
Disaggregation of Revenue [Line Items]
Total revenue	743,725	729,907	712,202	701,621	681,779	658,278	642,620	625,918	2,887,455	2,608,595	1,651,574
Telephony
Disaggregation of Revenue [Line Items]
Total revenue	162,007	161,351	163,499	166,038	169,064	172,479	178,261	180,961	652,895	700,765	465,771
Business services and wholesale
Disaggregation of Revenue [Line Items]
Total revenue	348,087	344,193	337,388	333,090	330,510	324,642	323,641	319,420	1,362,758	1,298,213	819,541
Advertising
Disaggregation of Revenue [Line Items]
Total revenue	$ 162,103	$ 123,066	$ 109,898	$ 87,582	$ 121,712	$ 89,292	$ 97,501	$ 83,361	482,649	391,866	252,049
Other
Disaggregation of Revenue [Line Items]
Total revenue									$ 24,423	$ 33,389	$ 39,404

SUMMARY OF SIGNIFICANT ACCOUN_7

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Stock by Class (Details)	12 Months Ended
	Dec. 31, 2018shares
Common Stock Outstanding Roll Forward [Roll Forward]
Retirement of Class A common shares in connection with the Company's stock repurchase plan (in shares)	(28,028,680)
Ending balance common stock, shares outstanding (in shares)	709,040,286
Common Class A
Common Stock Outstanding Roll Forward [Roll Forward]
Beginning balance common stock, shares outstanding (in shares)	246,982,292
Altice Europe Distribution on June 8, 2018 (in shares)	242,402,231
Conversion of Class B common stock to Class A common stock (in shares)	34,708,184
Retirement of Class A common shares in connection with the Company's stock repurchase plan (in shares)	(28,028,680)
Ending balance common stock, shares outstanding (in shares)	496,064,027
Common Class B
Common Stock Outstanding Roll Forward [Roll Forward]
Beginning balance common stock, shares outstanding (in shares)	490,086,674
Altice Europe Distribution on June 8, 2018 (in shares)	(242,402,231)
Conversion of Class B common stock to Class A common stock (in shares)	(34,708,184)
Retirement of Class A common shares in connection with the Company's stock repurchase plan (in shares)	0
Ending balance common stock, shares outstanding (in shares)	212,976,259

ACCOUNTING PRONOUNCEMENTS (Deta

ACCOUNTING PRONOUNCEMENTS (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Feb. 29, 2016	Mar. 31, 2018
Accounting Standards Update 2016-09
Investments, Owned, Federal Income Tax Note [Line Items]
Unrealized excess tax benefits recognized with the adoption of ASU 2016-09		$ 2,163
Accounting Standards Update 2016-02
Investments, Owned, Federal Income Tax Note [Line Items]
Percent of total assets	1.00%

CHANGE IN ACCOUNTING POLICIES_3

CHANGE IN ACCOUNTING POLICIES AND ATS ACQUISITION - Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Jan. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cash and cash equivalents	$ 298,781		$ 329,848
Other current assets			573,751
Property, plant and equipment, net	5,828,881		6,023,826
Goodwill	8,012,416		8,019,861	$ 7,992,700	$ 2,040,402
Other assets, long-term			19,864,796
Total assets	33,613,808		34,812,082
Current liabilities	2,021,191		2,520,362
Deferred tax liability			4,769,286
Liabilities, long-term			21,786,391
Total liabilities	29,803,565		29,076,039
Redeemable equity	130,007		231,290
Paid-in capital	3,423,803		4,665,229
Retained earnings	251,830		840,636
Total stockholders' equity	3,680,236		5,504,753	$ 2,042,508	$ 2,108,080
Total liabilities and stockholders' equity	33,613,808		34,812,082
Altice Technical Services
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Goodwill		$ (23,101)
As Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cash and cash equivalents			273,329
Other current assets			580,231
Property, plant and equipment, net			6,063,829
Goodwill			7,996,760
Other assets, long-term			19,861,076
Total assets			34,775,225
Current liabilities			2,492,983
Deferred tax liability			4,775,115
Liabilities, long-term			21,779,997
Total liabilities			29,048,095
Redeemable equity			231,290
Paid-in capital			4,642,128
Retained earnings			854,824
Total stockholders' equity			5,495,840
Total liabilities and stockholders' equity			34,775,225
Restatement Adjustment | Impact of ASC 606
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cash and cash equivalents			0
Other current assets			14,068
Property, plant and equipment, net			0
Goodwill			0
Other assets, long-term			10,261
Total assets			24,329
Current liabilities			6,978
Deferred tax liability			4,685
Liabilities, long-term			0
Total liabilities			11,663
Redeemable equity			0
Paid-in capital			0
Retained earnings			12,666
Total stockholders' equity			12,666
Total liabilities and stockholders' equity			24,329
Restatement Adjustment | Altice Technical Services
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cash and cash equivalents			56,519
Other current assets			(20,548)
Property, plant and equipment, net			(40,003)
Goodwill	$ (23,101)		23,101
Other assets, long-term			(6,541)
Total assets			12,528
Current liabilities			20,401
Deferred tax liability			(10,514)
Liabilities, long-term			6,394
Total liabilities			16,281
Redeemable equity			0
Paid-in capital			23,101
Retained earnings			(26,854)
Total stockholders' equity			(3,753)
Total liabilities and stockholders' equity			$ 12,528

CHANGE IN ACCOUNTING POLICIES_4

CHANGE IN ACCOUNTING POLICIES AND ATS ACQUISITION - Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue	$ 2,454,940	$ 2,417,801	$ 2,364,153	$ 2,329,714	$ 2,359,808	$ 2,322,521	$ 2,322,362	$ 2,302,259	$ 9,566,608	$ 9,306,950	$ 6,017,212
Programming and other direct costs									3,173,076	3,035,655	1,911,230
Other operating expenses									2,290,266	2,347,315	1,702,472
Restructuring and other expense									38,548	152,401	240,395
Depreciation and amortization									2,382,339	2,930,571	1,700,306
Operating income	528,724	505,558	335,059	313,038	217,055	120,575	253,268	250,110	1,682,379	841,008	462,809
Other expense, net									(1,700,440)	(2,208,596)	(1,553,954)
Loss before income taxes									(18,061)	(1,367,588)	(1,091,145)
Income tax benefit									38,655	2,862,352	259,666
Net income (loss)	213,808	33,739	(98,004)	(128,949)	2,243,325	(192,434)	(479,939)	(76,188)	20,594	1,494,764	(831,479)
Pay TV
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue	1,033,649	1,054,667	1,034,404	1,033,708	1,049,135	1,069,946	1,071,163	1,083,878	4,156,428	4,274,122	2,788,873
Broadband
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue	743,725	729,907	712,202	701,621	681,779	658,278	642,620	625,918	2,887,455	2,608,595	1,651,574
Telephony
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue	162,007	161,351	163,499	166,038	169,064	172,479	178,261	180,961	652,895	700,765	465,771
Business services and wholesale
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue	348,087	344,193	337,388	333,090	330,510	324,642	323,641	319,420	1,362,758	1,298,213	819,541
Advertising
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue	162,103	123,066	109,898	87,582	121,712	89,292	97,501	83,361	482,649	391,866	252,049
Other
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue	$ 5,369	$ 4,617	$ 6,762	$ 7,675	$ 7,608	$ 7,884	$ 9,176	$ 8,721	$ 24,423	33,389	39,404
As Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										9,326,570	6,017,212
Programming and other direct costs										3,035,655	1,911,230
Other operating expenses										2,342,655	1,705,615
Restructuring and other expense										152,401	240,395
Depreciation and amortization										2,930,475	1,700,306
Operating income										865,384	459,666
Other expense, net										(2,196,733)	(1,550,811)
Loss before income taxes										(1,331,349)	(1,091,145)
Income tax benefit										2,852,967	259,666
Net income (loss)										1,521,618	(831,479)
As Reported | Pay TV
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										4,214,745	2,759,216
As Reported | Broadband
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										2,563,772	1,617,029
As Reported | Telephony
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										823,981	529,973
As Reported | Business services and wholesale
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										1,298,817	819,541
As Reported | Advertising
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										391,866	252,049
As Reported | Other
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										33,389	39,404
Restatement Adjustment | Impact of ASC 606
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										(18,515)	0
Programming and other direct costs										0	0
Other operating expenses										(18,515)	0
Restructuring and other expense										0	0
Depreciation and amortization										0	0
Operating income										0	0
Other expense, net										0	0
Loss before income taxes										0	0
Income tax benefit										0	0
Net income (loss)										0	0
Restatement Adjustment | Impact of ASU No. 2017-07
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										0	0
Programming and other direct costs										0	0
Other operating expenses										(11,863)	(3,143)
Restructuring and other expense										0	0
Depreciation and amortization										0	0
Operating income										11,863	3,143
Other expense, net										(11,863)	(3,143)
Loss before income taxes										0	0
Income tax benefit										0	0
Net income (loss)										0	0
Restatement Adjustment | Pay TV | Impact of ASC 606
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										59,878	29,657
Restatement Adjustment | Pay TV | Impact of ASU No. 2017-07
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										0	0
Restatement Adjustment | Broadband | Impact of ASC 606
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										45,192	34,545
Restatement Adjustment | Broadband | Impact of ASU No. 2017-07
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										0	0
Restatement Adjustment | Telephony | Impact of ASC 606
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										(122,981)	(64,202)
Restatement Adjustment | Telephony | Impact of ASU No. 2017-07
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										0	0
Restatement Adjustment | Business services and wholesale | Impact of ASC 606
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										(604)	0
Restatement Adjustment | Business services and wholesale | Impact of ASU No. 2017-07
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										0	0
Restatement Adjustment | Advertising | Impact of ASC 606
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										0	0
Restatement Adjustment | Advertising | Impact of ASU No. 2017-07
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										0	0
Restatement Adjustment | Other | Impact of ASC 606
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										0	0
Restatement Adjustment | Other | Impact of ASU No. 2017-07
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										0	$ 0
Restatement Adjustment | Altice Technical Services
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										(1,105)
Programming and other direct costs										0
Other operating expenses										35,038
Restructuring and other expense										0
Depreciation and amortization										96
Operating income										(36,239)
Other expense, net										0
Loss before income taxes										(36,239)
Income tax benefit										9,385
Net income (loss)										(26,854)
Restatement Adjustment | Altice Technical Services | Pay TV
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										(501)
Restatement Adjustment | Altice Technical Services | Broadband
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										(369)
Restatement Adjustment | Altice Technical Services | Telephony
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										(235)
Restatement Adjustment | Altice Technical Services | Business services and wholesale
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										0
Restatement Adjustment | Altice Technical Services | Advertising
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										0
Restatement Adjustment | Altice Technical Services | Other
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total revenue										$ 0

CHANGE IN ACCOUNTING POLICIES_5

CHANGE IN ACCOUNTING POLICIES AND ATS ACQUISITION - Narrative (Details) - USD ($) $ in Thousands	Jan. 01, 2018	Dec. 31, 2018	Jan. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred revenue		$ 190,056		$ 117,679
Contract assets		26,405		24,329
Goodwill		8,012,416		8,019,861	$ 7,992,700	$ 2,040,402
Altice Technical Services
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Goodwill			$ (23,101)
Restatement Adjustment | Impact of ASC 606
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred revenue	$ 6,978
Cumulative effect on retained earnings, net of tax	17,759
Cumulative effect on retained earnings, tax	6,570
Contract assets	24,329
Goodwill				0
Restatement Adjustment | Installation Services | Impact of ASC 606
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect on retained earnings, net of tax	5,093
Cumulative effect on retained earnings, tax	$ 1,885
Restatement Adjustment | Altice Technical Services
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Goodwill		$ (23,101)		$ 23,101

BUSINESS COMBINATIONS - Narrati

BUSINESS COMBINATIONS - Narrative (Details) - USD ($) $ in Thousands	Jun. 21, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Goodwill		$ 8,012,416	$ 8,019,861	$ 7,992,700	$ 2,040,402
Goodwill acquired		7,608	$ 23,948	$ 5,838,959
Cablevision Systems Corp.
Business Acquisition [Line Items]
Goodwill	$ 5,842,172
Consideration transfered	$ 9,958,323
Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Goodwill		7,608
Consideration transfered		9,945
2017 Acquisition
Business Acquisition [Line Items]
Consideration transfered		80,000
Goodwill acquired		23,936
Customer relationships | 2017 Acquisition
Business Acquisition [Line Items]
Amortizable intangible assets acquired		45,000
Other amortizable intangibles | 2017 Acquisition
Business Acquisition [Line Items]
Amortizable intangible assets acquired		$ 9,400

BUSINESS COMBINATIONS - Assets

BUSINESS COMBINATIONS - Assets and Liabilities Acquired (Details) - USD ($) $ in Thousands	Jun. 21, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Goodwill		$ 8,012,416	$ 8,019,861	$ 7,992,700	$ 2,040,402
Cablevision Systems Corp.
Business Acquisition [Line Items]
Current assets	$ 1,923,071
Accounts receivable	271,305
Property, plant and equipment	4,864,621
Goodwill	5,842,172
Indefinite-lived cable television franchises	8,113,575
Other non-current assets	748,998
Current liabilities	(2,311,201)
Long-term debt	(8,355,386)
Deferred income taxes.	(6,832,773)
Other non-current liabilities	(189,355)
Total	9,958,323
Customer relationships | Cablevision Systems Corp.
Business Acquisition [Line Items]
Finite-lived intangible assets	4,850,000
Trade names | Cablevision Systems Corp.
Business Acquisition [Line Items]
Finite-lived intangible assets	$ 1,010,000
Finite-lived intangible asset, useful life	12 years
Amortizable intangible assets | Cablevision Systems Corp.
Business Acquisition [Line Items]
Finite-lived intangible assets	$ 23,296
Minimum | Property, Plant and Equipment | Cablevision Systems Corp.
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life	2 years
Minimum | Customer relationships | Cablevision Systems Corp.
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life	8 years
Minimum | Amortizable intangible assets | Cablevision Systems Corp.
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life	1 year
Maximum | Property, Plant and Equipment | Cablevision Systems Corp.
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life	18 years
Maximum | Customer relationships | Cablevision Systems Corp.
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life	18 years
Maximum | Amortizable intangible assets | Cablevision Systems Corp.
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life	15 years

BUSINESS COMBINATIONS - Pro For

BUSINESS COMBINATIONS - Pro Forma Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)
Business Combinations [Abstract]
Revenue	$ 9,154,816
Net loss	$ (721,257)

SUPPLEMENTAL CASH FLOW INFORM_3

SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 20, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Non-Cash Investing and Financing Activities:
Conversion of notes payable to affiliates and related parties of $1,750,000 (together with accrued and unpaid interest and applicable premium) to common stock (See Note 11)		$ 0	$ 2,264,252,000	$ 0
Principal amount			16,289,245,000
Property and equipment accrued but unpaid		213,936,000	171,604,000	155,653,000
Distributions declared but not paid		0	0	79,617,000
Leasehold improvements paid by landlord		350,000	3,998,000	0
Notes payable issued to vendor for the purchase of equipment	$ 0	95,394,000	40,131,000	12,449,000
Capital lease obligations	$ 0	13,548,000	9,385,000	0
Deferred financing costs accrued but unpaid		1,005,000	0	2,570,000
Contingent consideration for acquisitions		6,195,000	32,233,000	0
Receivable related to the sale of an investment		4,015,000	0	0
Supplemental Data:
Cash interest paid		1,481,468,000	1,765,126,000	1,192,370,000
Income taxes paid, net		$ 13,667,000	29,006,000	$ 1,538,000
Affiliates | Notes payable
Non-Cash Investing and Financing Activities:
Principal amount			$ 1,750,000

RESTRUCTURING AND OTHER EXPEN_3

RESTRUCTURING AND OTHER EXPENSE (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Restructuring Reserve [Roll Forward]
Accrual, beginning balance	$ 110,516	$ 123,100	$ 110,516
Restructuring charges		31,027	149,922	$ 226,577
Payments and other		(119,058)	(137,338)	(116,061)
Accrual, ending balance		35,069	123,100	110,516
Cumulative restructuring costs		407,526
Transaction costs	2,479	7,521		13,845
Severance and Other Employee Related Costs
Restructuring Reserve [Roll Forward]
Accrual, beginning balance	102,119	113,474	102,119
Restructuring charges		15,580	142,679	215,420
Payments and other		(107,600)	(131,324)	(113,301)
Accrual, ending balance		21,454	113,474	102,119
Facility Realignment and Other Costs
Restructuring Reserve [Roll Forward]
Accrual, beginning balance	$ 8,397	9,626	8,397
Restructuring charges		15,447	7,243	11,157
Payments and other		(11,458)	(6,014)	(2,760)
Accrual, ending balance		$ 13,615	$ 9,626	$ 8,397

PROPERTY, PLANT AND EQUIPMENT -

PROPERTY, PLANT AND EQUIPMENT - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Depreciation	$ 1,508,125	$ 1,588,764	$ 1,046,896
Plant | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	10 years
Plant | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	25 years
Headends and related equipment | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	5 years
Headends and related equipment | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	25 years
Customer premise equipment | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	3 years
Customer premise equipment | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	5 years
Acquisition and development of internal use software
Property, Plant and Equipment [Line Items]
Property, plant and equipment capitalized	$ 134,265	$ 151,646	$ 75,804

PROPERTY, PLANT AND EQUIPMENT_2

PROPERTY, PLANT AND EQUIPMENT - Summary (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 9,873,552	$ 8,623,405
Less accumulated depreciation and amortization	(4,044,671)	(2,599,579)
Property, plant and equipment, net	5,828,881	6,023,826
Customer premise equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 1,354,510	1,093,726
Customer premise equipment | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	3 years
Customer premise equipment | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	5 years
Headends and related equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 1,852,105	1,626,293
Headends and related equipment | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	5 years
Headends and related equipment | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	25 years
Infrastructure
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 4,595,143	4,003,845
Infrastructure | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	5 years
Infrastructure | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	25 years
Equipment and software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 1,083,166	918,298
Equipment and software | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	3 years
Equipment and software | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	10 years
Construction in progress (including materials and supplies)
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 215,684	240,496
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 57,448	52,545
Furniture and fixtures | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	5 years
Furniture and fixtures | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	8 years
Transportation equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 146,387	138,147
Transportation equipment | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	5 years
Transportation equipment | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	10 years
Buildings and building improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 411,573	394,421
Buildings and building improvements | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	10 years
Buildings and building improvements | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	40 years
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 109,110	108,071
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 48,426	$ 47,563

PROPERTY, PLANT AND EQUIPMENT_3

PROPERTY, PLANT AND EQUIPMENT - Capital Leased Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Buildings and equipment	$ 41,554	$ 48,936
Less accumulated depreciation	(10,663)	(12,972)
Capital leased assets, net	$ 30,891	$ 35,964

OPERATING LEASES - Narrative (D

OPERATING LEASES - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Leases [Abstract]
Rent expense	$ 104,298	$ 95,017	$ 65,881

OPERATING LEASES - Future Minim

OPERATING LEASES - Future Minimum Lease Payments (Details) $ in Thousands	Dec. 31, 2018USD ($)
Leases [Abstract]
2,019	$ 47,905
2,020	50,356
2,021	43,362
2,022	34,882
2,023	25,234
Thereafter	$ 167,941

INTANGIBLE ASSETS - Summary of

INTANGIBLE ASSETS - Summary of Acquired Intangible Assets (Details) - USD ($) $ in Thousands	May 23, 2017	Dec. 31, 2017	Dec. 31, 2018
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount		$ 7,075,027	$ 7,075,611
Accumulated Amortization		(2,008,573)	(2,882,787)
Net Carrying Amount		5,066,454	4,192,824
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount		5,970,884	5,970,884
Accumulated Amortization		(1,409,021)	(2,162,110)
Net Carrying Amount		4,561,863	3,808,774
Trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount		1,067,083	1,067,083
Accumulated Amortization		(588,574)	(701,998)
Net Carrying Amount		$ 478,509	365,085
Remaining amortization period	3 years	5 years
Remaining amortization period, in-use period	1 year
Remaining amortization period, defensive asset	2 years
Other amortizable intangibles
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount		$ 37,060	37,644
Accumulated Amortization		(10,978)	(18,679)
Net Carrying Amount		$ 26,082	$ 18,965
Minimum | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life			8 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
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

INTANGIBLE ASSETS - Narrative (

INTANGIBLE ASSETS - Narrative (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 20, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	$ 10,316	$ 874,214	$ 1,341,807	$ 653,410	$ 7,812

INTANGIBLE ASSETS - Schedule of

INTANGIBLE ASSETS - Schedule of Finite-Lived Intangible Assets, Future Amortization Expense (Details) $ in Thousands	Dec. 31, 2018USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2,019	$ 778,922
2,020	697,316
2,021	617,794
2,022	532,998
2,023	$ 371,198

INTANGIBLE ASSETS - Goodwill (D

INTANGIBLE ASSETS - Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 8,019,861	$ 7,992,700	$ 2,040,402
Goodwill acquired	7,608	23,948	5,838,959
Adjustments to purchase accounting relating to acquisitions	(12)	3,213	113,339
Reclassification of goodwill	(15,041)
Goodwill, ending balance	$ 8,012,416	$ 8,019,861	$ 7,992,700

DEBT - Credit Silo Combination

DEBT - Credit Silo Combination (Details)	Nov. 27, 2018USD ($)basis_points	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Apr. 26, 2016USD ($)
Debt Instrument [Line Items]
Principal amount			$ 16,289,245,000
Conversion of debt		$ 0	2,264,252,000	$ 0
Long-term debt					$ 1,477,200,000
Original Cequel Notes
Debt Instrument [Line Items]
Redeemed debt	$ 5,206,000
Senior Notes
Debt Instrument [Line Items]
Principal amount		15,733,145,000
Senior Notes | New Cequel Notes
Debt Instrument [Line Items]
Principal amount	5,520,000,000
Cash	6,500,000
Conversion of debt	$ 5,500,050,000
Senior Notes | 5.375% Senior Notes due July 15, 2023
Debt Instrument [Line Items]
Principal amount		$ 0	1,100,000,000
Stated interest rate		5.375%
Senior Notes | 5.125% Senior Notes due December 15, 2021
Debt Instrument [Line Items]
Principal amount		$ 0	$ 1,250,000,000
Stated interest rate	5.125%	5.125%
Senior Notes | CSC Holdings Senior Notes
Debt Instrument [Line Items]
Principal amount	$ 5,499,156,000
Term Loan | 5.375% Senior Notes due July 15, 2023
Debt Instrument [Line Items]
Stated interest rate	5.375%
Term Loan | Cequel and Cequel Capital 5.5% Senior Notes due May 15, 2026
Debt Instrument [Line Items]
Stated interest rate	5.50%
Term Loan | Combination Incremental Term Loan Agreement
Debt Instrument [Line Items]
Principal amount	$ 1,275,000,000
Term Loan | Incremental Term Loan B-3
Debt Instrument [Line Items]
Principal amount	$ 1,275,000,000
Debt term	7 years
Basis points | basis_points	25
Payment percent	0.25%
Quarterly payment	$ 3,188,000
Term Loan | Incremental Term Loan B-3 | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	2.25%

DEBT - Schedule of Exchange Agr

DEBT - Schedule of Exchange Agreement (Details) - USD ($)	Nov. 27, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Principal amount		$ 16,289,245,000
Cequel Corp. | 5.375% Senior Secured Notes due 2023
Debt Instrument [Line Items]
Principal amount	$ 1,100,000,000
Remaining Original Cequel Notes	0
Notes Redeemed in Cash	4,157,000
Cequel Corp. | 5.5% Senior Secured Notes due 2026
Debt Instrument [Line Items]
Principal amount	1,500,000,000
Remaining Original Cequel Notes	0
Notes Redeemed in Cash	1,049,000
Cequel Corp. | 5.125% Senior Notes due 2021
Debt Instrument [Line Items]
Principal amount	1,250,000,000
Remaining Original Cequel Notes	8,886,000
Notes Redeemed in Cash	0
Cequel Corp. | 7.75% Senior Notes due 2025
Debt Instrument [Line Items]
Principal amount	620,000,000
Remaining Original Cequel Notes	1,740,000
Notes Redeemed in Cash	0
Cequel Corp. | 7.5% Senior Notes due 2028
Debt Instrument [Line Items]
Principal amount	1,050,000,000
Remaining Original Cequel Notes	4,118,000
Notes Redeemed in Cash	0
Cequel Corp. | Original Cequel Notes
Debt Instrument [Line Items]
Principal amount	5,520,000,000
Remaining Original Cequel Notes	14,744,000
Notes Redeemed in Cash	5,206,000
CSC Holdings | 5.375% Senior Secured Notes due 2023
Debt Instrument [Line Items]
Principal amount	1,095,825,000
CSC Holdings | 5.5% Senior Secured Notes due 2026
Debt Instrument [Line Items]
Principal amount	1,498,806,000
CSC Holdings | 5.125% Senior Notes due 2021
Debt Instrument [Line Items]
Principal amount	1,240,762,000
CSC Holdings | 7.75% Senior Notes due 2025
Debt Instrument [Line Items]
Principal amount	617,881,000
CSC Holdings | 7.5% Senior Notes due 2028
Debt Instrument [Line Items]
Principal amount	1,045,882,000
CSC Holdings | Principal of New CSC Holdings Notes
Debt Instrument [Line Items]
Principal amount	$ 5,499,156,000

DEBT - CSC Holdings Credit Faci

DEBT - CSC Holdings Credit Facilities (Details)

Oct. 15, 2018

Mar. 15, 2017USD ($)

Apr. 17, 2013USD ($)

Oct. 12, 2012USD ($)

Jan. 31, 2018USD ($)

Apr. 30, 2017USD ($)

Oct. 31, 2016USD ($)

Jun. 20, 2016

Dec. 31, 2018USD ($)

Dec. 31, 2017USD ($)

Dec. 31, 2016USD ($)

Nov. 27, 2018USD ($)

Oct. 11, 2016USD ($)

Sep. 30, 2016USD ($)

Jun. 21, 2016USD ($)

Debt Instrument [Line Items]

Principal Amount

$ 480,000,000

$ 5,972,500,000

$ 4,693,675,000

Principal amount

16,289,245,000

Redemption of debt amount

2,628,962,000

1,729,400,000

$ 0

Loss on extinguishment of debt and write-off of deferred financing costs

$ 18,976,000

48,804,000

600,240,000

$ 127,649,000

Alternate Base Rate

Debt Instrument [Line Items]

Basis spread on variable rate

2.50%

Eurodollar

Debt Instrument [Line Items]

Basis spread on variable rate

3.50%

Senior Notes

Debt Instrument [Line Items]

Principal amount

15,733,145,000

5.5% Notes due April 15, 2027 | Term Loan

Debt Instrument [Line Items]

Principal amount

$ 1,310,000,000

1,310,000,000

Stated interest rate

5.50%

5.5% Notes due April 15, 2027 | Senior Notes

Debt Instrument [Line Items]

Principal amount

$ 1,310,000,000

Stated interest rate

5.50%

Deferred financing costs

$ 6,106,000

CSC Holdings 8.625% Notes due September 15, 2017

Debt Instrument [Line Items]

Loss on extinguishment of debt and write-off of deferred financing costs

6,300,000

CSC Holdings 8.625% Notes due September 15, 2017 | Senior Notes

Debt Instrument [Line Items]

Redeemed debt

$ 500,000,000

8.625% Notes due September 15, 2017 | Senior Notes

Debt Instrument [Line Items]

Stated interest rate

8.625%

Incremental Term Loan B-3 | Term Loan

Debt Instrument [Line Items]

Principal amount

$ 1,275,000,000

CSC Credit Facilities

Debt Instrument [Line Items]

Percentage of proceeds from asset sales required to pay down term loans

100.00%

Percentage of excess cash flow required when minimum leverage ratio is not met

50.00%

Percentage of excess cash flow required to pay down term loans when minimum leverage ratio is fulfilled

0.00%

Minimum debt leverage ratio required for zero percent of excess cash flow obligation to prepay debt

4.5

Line of credit facility, covenant, leverage ratio

5

Line of credit facility, covenant, minimum undrawn letters of credit

$ 15,000,000

Term Loan

Debt Instrument [Line Items]

Deferred financing costs

$ 7,249,000

Issue discount

$ 6,250,000

Repayments of lines of credit

$ 2,030,699,000

$ 480,000,000

Term Loan | Alternate Base Rate

Debt Instrument [Line Items]

Basis spread on variable rate

2.25%

Term Loan | CSC Holdings Term Loan Facility

Debt Instrument [Line Items]

Principal Amount

3,000,000,000

Principal amount

3,000,000,000

2,955,000,000

Write-off the deferred financing costs and the unamortized discount

$ 102,894,000

Deferred financing costs

4,390,000

7,249,000

Issue discount

15,000,000

6,250,000

Line of credit facility, increase in borrowing capacity

$ 500,000,000

Repayments of lines of credit

$ 2,493,750,000

Line of credit facility periodic payment, percentage of principal

0.25%

Line of credit facility, periodic payment amount

$ 7,500,000

Term Loan | CSC Holdings Term Loan Facility | Alternate Base Rate

Debt Instrument [Line Items]

Basis spread on variable rate

1.25%

Term Loan | CSC Holdings Term Loan Facility | Eurodollar

Debt Instrument [Line Items]

Basis spread on variable rate

2.25%

Term Loan | Incremental Term Loan B-2

Debt Instrument [Line Items]

Principal Amount

$ 1,500,000,000

1,492,500,000

0

Line of credit facility periodic payment, percentage of principal

0.25%

Line of credit facility, periodic payment amount

$ 3,750,000

Price percent

99.50%

Term Loan | Incremental Term Loan B-2 | Alternate Base Rate

Debt Instrument [Line Items]

Basis spread on variable rate

1.50%

Term Loan | Incremental Term Loan B-2 | Eurodollar

Debt Instrument [Line Items]

Basis spread on variable rate

2.50%

Term Loan | Incremental Term Loan B-3

Debt Instrument [Line Items]

Principal Amount

1,275,000,000

0

Revolving Credit Facility | Eurodollar

Debt Instrument [Line Items]

Basis spread on variable rate

3.25%

Revolving Credit Facility | CSC Holdings Revolving Credit Facility

Debt Instrument [Line Items]

Principal Amount

$ 250,000,000

$ 450,000,000

$ 2,300,000,000

Revolving Credit Facility | CSC Holdings Revolving Credit Facility | Alternate Base Rate

Debt Instrument [Line Items]

Basis spread on variable rate

2.25%

Revolving Credit Facility | CSC Holdings Revolving Credit Facility | Eurodollar

Debt Instrument [Line Items]

Basis spread on variable rate

3.25%

DEBT - Cequel Credit Facilities

DEBT - Cequel Credit Facilities (Details) - USD ($)	Sep. 30, 2018	Mar. 15, 2017	Oct. 12, 2012	Oct. 31, 2018	Apr. 30, 2018	Jun. 20, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Line of Credit Facility [Line Items]
Principal Amount			$ 480,000,000				$ 5,972,500,000	$ 4,693,675,000
Credit facility							5,915,559,000	4,643,523,000
Redemption of debt amount							2,628,962,000	1,729,400,000	$ 0
Loss on extinguishment of debt and write-off of deferred financing costs		$ 18,976,000					48,804,000	600,240,000	127,649,000
Principal amount								16,289,245,000
Alternate Base Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate			2.50%
Eurodollar
Line of Credit Facility [Line Items]
Basis spread on variable rate			3.50%
Senior Notes
Line of Credit Facility [Line Items]
Principal amount							15,733,145,000
Term Loan | Alternate Base Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate						2.25%
Revolving Credit Facility | Eurodollar
Line of Credit Facility [Line Items]
Basis spread on variable rate						3.25%
Cequel Credit Facilities
Line of Credit Facility [Line Items]
Loss on extinguishment of debt and write-off of deferred financing costs							7,733,000
Cequel Credit Facilities | Line of Credit
Line of Credit Facility [Line Items]
Extinguishment of debt				$ 1,249,188,000
Cequel Term Loan Facility
Line of Credit Facility [Line Items]
Loss on extinguishment of debt and write-off of deferred financing costs								2,027,000	$ 24,755,000
Cequel Term Loan Facility | Term Loan
Line of Credit Facility [Line Items]
Principal Amount	$ 1,265,000,000						0	1,258,675,000
Line of credit facility periodic payment, percentage of principal	0.25%
Line of credit facility, periodic payment amount	$ 3,163,000
Credit facility		812,963,000					$ 0	1,250,217,000
Loss on extinguishment of debt and write-off of deferred financing costs		28,684,000
Cequel Term Loan Facility | Term Loan | Alternate Base Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate							1.25%
Cequel Term Loan Facility | Term Loan | Eurodollar
Line of Credit Facility [Line Items]
Basis spread on variable rate							2.25%
Cequel Revolving Credit Facility | Revolving Credit Facility
Line of Credit Facility [Line Items]
Principal Amount	$ 350,000,000
Cequel Revolving Credit Facility | Revolving Credit Facility | Alternate Base Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate							2.25%
Cequel Revolving Credit Facility | Revolving Credit Facility | Eurodollar
Line of Credit Facility [Line Items]
Basis spread on variable rate							3.25%
6.375% Senior Notes due September 15, 2020
Line of Credit Facility [Line Items]
Loss on extinguishment of debt and write-off of deferred financing costs							$ 36,910,000
6.375% Senior Notes due September 15, 2020 | Senior Notes
Line of Credit Facility [Line Items]
Redeemed debt		$ 450,000,000			$ 1,050,000,000
Stated interest rate		6.375%			6.375%		6.375%
Loss on extinguishment of debt and write-off of deferred financing costs					$ 16,737,000
Principal amount							$ 0	$ 1,050,000,000

DEBT - Credit Facilities Outsta

DEBT - Credit Facilities Outstanding (Details) - USD ($)	Dec. 31, 2018	Sep. 30, 2018	Jan. 31, 2018	Dec. 31, 2017	Mar. 15, 2017	Jun. 21, 2016	Oct. 12, 2012
Debt Instrument [Line Items]
Principal Amount	$ 5,972,500,000			$ 4,693,675,000			$ 480,000,000
Credit facility, Carrying Value	5,915,559,000			4,643,523,000
Less: Current portion	54,563,000			42,650,000
Credit facility, noncurrent	5,860,996,000			4,600,873,000
CSC Holdings Revolving Credit Facility, Portion Due October 9, 2020 | Revolving Credit Facility
Debt Instrument [Line Items]
Principal Amount	$ 20,000,000
CSC Holdings Revolving Credit Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Stated interest rate	5.70513%
Principal Amount	$ 250,000,000			450,000,000		$ 2,300,000,000
Credit facility, Carrying Value	231,425,000			425,488,000
Letters of credit outstanding	147,564,000
Line of credit facility, remaining borrowing capacity	$ 1,902,436,000
CSC Holdings Term Loan B | Term Loan
Debt Instrument [Line Items]
Stated interest rate	4.70513%
Principal Amount	$ 2,955,000,000			2,985,000,000
Credit facility, Carrying Value	$ 2,939,425,000			2,967,818,000
Incremental Term Loan B-2 | Term Loan
Debt Instrument [Line Items]
Stated interest rate	4.95513%
Principal Amount	$ 1,492,500,000		$ 1,500,000,000	0
Credit facility, Carrying Value	$ 1,475,778,000			0
Incremental Term Loan B-3 | Term Loan
Debt Instrument [Line Items]
Stated interest rate	4.74538%
Principal Amount	$ 1,275,000,000			0
Credit facility, Carrying Value	1,268,931,000			0
Cequel Term Loan Facility | Term Loan
Debt Instrument [Line Items]
Principal Amount	0	$ 1,265,000,000		1,258,675,000
Credit facility, Carrying Value	$ 0			$ 1,250,217,000	$ 812,963,000

DEBT - Senior Guaranteed Notes

DEBT - Senior Guaranteed Notes and Senior Notes and Debentures (Details) - USD ($)	Dec. 31, 2018	Nov. 27, 2018	Apr. 30, 2018	Dec. 31, 2017	Jul. 31, 2017	Mar. 15, 2017	Sep. 30, 2016
Debt Instrument [Line Items]
Principal amount				$ 16,289,245,000
Carrying Amount	$ 15,359,561,000			15,860,432,000
Less: Current portion	0			507,744,000
Long-term debt	15,359,561,000			15,352,688,000
Short-term debt reclassified	526,000,000
Senior Notes
Debt Instrument [Line Items]
Principal amount	$ 15,733,145,000
Senior Notes | 7.875% Notes due February 15, 2018
Debt Instrument [Line Items]
Interest Rate	7.875%
Principal amount	$ 0			300,000,000
Carrying Amount	$ 0			301,184,000
Senior Notes | 7.625% Notes due July 15, 2018
Debt Instrument [Line Items]
Interest Rate	7.625%
Principal amount	$ 0			500,000,000
Carrying Amount	$ 0			507,744,000
Senior Notes | 8.625% Notes due February 15, 2019
Debt Instrument [Line Items]
Interest Rate	8.625%
Principal amount	$ 526,000,000			526,000,000
Carrying Amount	$ 527,749,000			541,165,000
Senior Notes | 6.75% Notes due November 15, 2021
Debt Instrument [Line Items]
Interest Rate	6.75%
Principal amount	$ 1,000,000,000			1,000,000,000
Carrying Amount	$ 969,285,000			960,146,000
Senior Notes | 5.25% Notes due June 1, 2024
Debt Instrument [Line Items]
Interest Rate	5.25%
Principal amount	$ 750,000,000			750,000,000
Carrying Amount	$ 671,829,000			660,601,000
Senior Notes | 10.125% Notes due January 15, 2023
Debt Instrument [Line Items]
Interest Rate	10.125%
Principal amount	$ 1,800,000,000			1,800,000,000
Carrying Amount	$ 1,781,424,000			1,777,914,000
Senior Notes | 10.875% Notes due October 15, 2025
Debt Instrument [Line Items]
Interest Rate	10.875%				10.875%
Principal amount	$ 1,684,221,000			1,684,221,000
Carrying Amount	$ 1,663,027,000			1,661,135,000	$ 315,779,000
Senior Notes | CSC Holdings 5.125% Notes due December 15, 2021
Debt Instrument [Line Items]
Interest Rate	5.125%
Principal amount	$ 1,240,762,000			0
Carrying Amount	$ 1,155,264,000			0
Senior Notes | CSC Holdings 7.750% Notes due July 15, 2025
Debt Instrument [Line Items]
Interest Rate	7.75%
Principal amount	$ 617,881,000			0
Carrying Amount	$ 603,889,000			0
Senior Notes | CSC Holdings 7.500% Notes due April 1, 2028
Debt Instrument [Line Items]
Interest Rate	7.50%
Principal amount	$ 1,045,882,000			0
Carrying Amount	$ 1,044,143,000			0
Senior Notes | 5.5% Notes due April 15, 2027
Debt Instrument [Line Items]
Interest Rate							5.50%
Principal amount							$ 1,310,000,000
Senior Notes | 7.75% Notes due April 15, 2018
Debt Instrument [Line Items]
Interest Rate	7.75%
Principal amount	$ 0			750,000,000
Carrying Amount	$ 0			754,035,000
Senior Notes | 8.0% Notes due April 15, 2020
Debt Instrument [Line Items]
Interest Rate	8.00%
Principal amount	$ 500,000,000			500,000,000
Carrying Amount	$ 495,302,000			492,009,000
Senior Notes | 5.875% Notes due September 15, 2022
Debt Instrument [Line Items]
Interest Rate	5.875%
Principal amount	$ 649,024,000			649,024,000
Carrying Amount	$ 585,817,000			572,071,000
Senior Notes | Cablevision 5.125% Notes due December 15, 2021
Debt Instrument [Line Items]
Interest Rate	5.125%
Principal amount	$ 8,886,000			0
Carrying Amount	$ 8,274,000			0
Senior Notes | Cablevision 7.750% Notes due July 15, 2025
Debt Instrument [Line Items]
Interest Rate	7.75%
Principal amount	$ 1,740,000			0
Carrying Amount	$ 1,690,000			0
Senior Notes | Cablevision 7.500% Notes due April 1, 2028
Debt Instrument [Line Items]
Interest Rate	7.50%
Principal amount	$ 4,118,000			0
Carrying Amount	$ 4,110,000			0
Senior Notes | 6.375% Senior Notes due September 15, 2020
Debt Instrument [Line Items]
Interest Rate	6.375%		6.375%			6.375%
Principal amount	$ 0			1,050,000,000
Carrying Amount	$ 0			1,027,493,000
Senior Notes | 5.125% Senior Notes due December 15, 2021
Debt Instrument [Line Items]
Interest Rate	5.125%	5.125%
Principal amount	$ 0			1,250,000,000
Carrying Amount	$ 0			1,138,870,000
Senior Notes | 7.75% Senior Notes due July 15, 2025
Debt Instrument [Line Items]
Interest Rate	7.75%
Principal amount	$ 0			620,000,000
Carrying Amount	$ 0			604,374,000
Senior Notes | 5.375% Senior Notes due July 15, 2023
Debt Instrument [Line Items]
Interest Rate	5.375%
Principal amount	$ 0			1,100,000,000
Carrying Amount	$ 0			1,082,482,000
Senior Notes | 5.5% Senior Notes due May 15, 2026
Debt Instrument [Line Items]
Interest Rate	5.50%
Principal amount	$ 0			1,500,000,000
Carrying Amount	$ 0			1,488,024,000
Term Loan | 6.625% Notes due October 15, 2025
Debt Instrument [Line Items]
Interest Rate	6.625%
Principal amount	$ 1,000,000,000			1,000,000,000
Carrying Amount	$ 988,052,000			986,717,000
Term Loan | 5.5% Notes due April 15, 2027
Debt Instrument [Line Items]
Interest Rate	5.50%
Principal amount	$ 1,310,000,000			1,310,000,000
Carrying Amount	$ 1,304,936,000			1,304,468,000
Term Loan | 5.375% Senior Guaranteed Notes Due February 1, 2028
Debt Instrument [Line Items]
Interest Rate	5.375%
Principal amount	$ 1,000,000,000			0
Carrying Amount	$ 992,064,000			0
Term Loan | CSC Holdings 5.375% Senior Guaranteed Notes due July 15, 2023
Debt Instrument [Line Items]
Interest Rate	5.375%
Principal amount	$ 1,095,825,000			0
Carrying Amount	$ 1,078,428,000			0
Term Loan | CSC Holdings 5.500% Notes due May 15, 2026
Debt Instrument [Line Items]
Interest Rate	5.50%
Principal amount	$ 1,498,806,000			0
Carrying Amount	$ 1,484,278,000			$ 0
Term Loan | 5.375% Senior Notes due July 15, 2023
Debt Instrument [Line Items]
Interest Rate		5.375%

DEBT - Senior Guaranteed Notes,

DEBT - Senior Guaranteed Notes, Senior Secured Notes, and Senior Notes and Debentures (Details) - USD ($)	Jun. 06, 2018	Mar. 15, 2017	Apr. 30, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Feb. 28, 2018	Jan. 01, 2018	Sep. 30, 2016	Jun. 21, 2016	Apr. 26, 2016
Debt Instrument [Line Items]
Principal amount					$ 16,289,245,000
Long-term debt											$ 1,477,200,000
Dividends	$ 1,499,935,000			$ 1,499,935,000
Loss on extinguishment of debt and write-off of deferred financing costs		$ 18,976,000		48,804,000	600,240,000	$ 127,649,000
6.375% Senior Notes due September 15, 2020
Debt Instrument [Line Items]
Loss on extinguishment of debt and write-off of deferred financing costs				36,910,000
Senior Notes
Debt Instrument [Line Items]
Principal amount				15,733,145,000
Senior Notes | Cequel 2026 Senior Secured Notes
Debt Instrument [Line Items]
Principal amount											$ 1,500,000,000
Stated interest rate											5.50%
Deferred financing costs											$ 13,773,000
Senior Notes | 5.5% Notes due April 15, 2027
Debt Instrument [Line Items]
Principal amount									$ 1,310,000,000
Stated interest rate									5.50%
Deferred financing costs									$ 6,106,000
Senior Notes | 2028 Guaranteed Notes
Debt Instrument [Line Items]
Principal amount			$ 1,050,000,000
Stated interest rate			7.50%
Senior Notes | CSC Holdings' Senior Notes Due February 2018
Debt Instrument [Line Items]
Long-term debt							$ 300,000,000
Senior Notes | Cablevision Senior Notes Due April 2018
Debt Instrument [Line Items]
Long-term debt			$ 750,000,000
Loss on extinguishment of debt and write-off of deferred financing costs			7,019,000
Debt premium			$ 2,314,000
Senior Notes | 6.375% Senior Notes due September 15, 2020
Debt Instrument [Line Items]
Principal amount				$ 0	1,050,000,000
Stated interest rate		6.375%	6.375%	6.375%
Loss on extinguishment of debt and write-off of deferred financing costs			$ 16,737,000
Debt premium			20,173,000
Redemption of debt amount		$ 450,000,000	$ 1,050,000,000
Term Loan | 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%
Term Loan | 2028 Guaranteed Notes
Debt Instrument [Line Items]
Principal amount								$ 1,000,000,000
Stated interest rate								5.375%
Cablevision Systems Corp. | Notes payable
Debt Instrument [Line Items]
Principal amount										$ 1,750,000,000
Cablevision Systems Corp. | Notes payable | Notes Payable at 10.75%
Debt Instrument [Line Items]
Principal amount										$ 875,000,000
Stated interest rate										10.75%
Cablevision Systems Corp. | Notes payable | Notes Payable at 11%
Debt Instrument [Line Items]
Principal amount										$ 875,000,000
Stated interest rate										11.00%
Affiliates | Notes payable
Debt Instrument [Line Items]
Principal amount					1,750,000
Affiliates | Cablevision Systems Corp. | Notes payable
Debt Instrument [Line Items]
Principal amount										$ 1,750,000,000
Debt premium										513,723,000
Interest payable										$ 529,000
Interest expense					90,405,000	$ 102,557,000
Organizational Transactions Prior to IPO
Debt Instrument [Line Items]
Cummulative adoption of ASU 2014-09					$ 2,264,252,000

DEBT - Schedule of Gain (Loss)

DEBT - Schedule of Gain (Loss) on Debt Extinguishment (Details) - USD ($) $ in Thousands	Mar. 15, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Loss on extinguishment of debt and write-off of deferred financing costs (including $513,723 related to affiliates and related parties in 2017) (See Note 16)	$ 18,976	$ 48,804	$ 600,240	$ 127,649
7.75% Notes due April 15, 2018
Debt Instrument [Line Items]
Loss on extinguishment of debt and write-off of deferred financing costs (including $513,723 related to affiliates and related parties in 2017) (See Note 16)		4,706
6.375% Senior Notes due September 15, 2020
Debt Instrument [Line Items]
Loss on extinguishment of debt and write-off of deferred financing costs (including $513,723 related to affiliates and related parties in 2017) (See Note 16)		36,910
Cequel Credit Facilities
Debt Instrument [Line Items]
Loss on extinguishment of debt and write-off of deferred financing costs (including $513,723 related to affiliates and related parties in 2017) (See Note 16)		7,733
Exchange Offer
Debt Instrument [Line Items]
Loss on extinguishment of debt and write-off of deferred financing costs (including $513,723 related to affiliates and related parties in 2017) (See Note 16)		$ (545)
Notes Payable to Affiliates
Debt Instrument [Line Items]
Loss on extinguishment of debt and write-off of deferred financing costs (including $513,723 related to affiliates and related parties in 2017) (See Note 16)			513,723
CSC Holdings Term Loan B
Debt Instrument [Line Items]
Loss on extinguishment of debt and write-off of deferred financing costs (including $513,723 related to affiliates and related parties in 2017) (See Note 16)			12,675	102,894
10.875% Notes due October 15, 2025
Debt Instrument [Line Items]
Loss on extinguishment of debt and write-off of deferred financing costs (including $513,723 related to affiliates and related parties in 2017) (See Note 16)			38,858
CSC Holdings 8.625% Notes due September 15, 2017
Debt Instrument [Line Items]
Loss on extinguishment of debt and write-off of deferred financing costs (including $513,723 related to affiliates and related parties in 2017) (See Note 16)			6,300
Cequel Term Loan Facility
Debt Instrument [Line Items]
Loss on extinguishment of debt and write-off of deferred financing costs (including $513,723 related to affiliates and related parties in 2017) (See Note 16)			2,027	$ 24,755
Cequel 6.375% Senior Notes due 2020
Debt Instrument [Line Items]
Loss on extinguishment of debt and write-off of deferred financing costs (including $513,723 related to affiliates and related parties in 2017) (See Note 16)			$ 26,657

DEBT - Summary of Debt Maturiti

DEBT - Summary of Debt Maturities (Details) $ in Thousands	Dec. 31, 2018USD ($)
Debt Disclosure [Abstract]
2,019	$ 684,624
2,020	589,566
2,021	4,002,251
2,022	710,920
2,023	2,957,403
Thereafter	$ 14,351,818

DERIVATIVE CONTRACTS AND COLL_3

DERIVATIVE CONTRACTS AND COLLATERALIZED INDEBTEDNESS - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	12 Months Ended
	Apr. 30, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Apr. 26, 2016
Derivative [Line Items]
Gain (loss) on investments and sale of affiliate interests, net		$ (261,834)	$ 237,354	$ 141,896
Shares related to monetization contracts (in shares)		16,139,868	26,815,368
Long-term debt					$ 1,477,200
Notes payable | Notes related to derivative contracts
Derivative [Line Items]
Long-term debt	$ 111,657
Discount on notes	$ 58,341
Put-Call Options
Derivative [Line Items]
Loss on settlement of derivative			$ 97,410
Interest Rate Swap
Derivative [Line Items]
Amount of gain (loss) recognized		$ (61,697)	5,482	(72,961)
Prepaid forward contracts
Derivative [Line Items]
Amount of gain (loss) recognized		$ 218,848	$ (138,920)	$ (53,696)
Monetization contract
Derivative [Line Items]
Shares related to monetization contracts (in shares)	32,153,118
Maximum hedge price at which downside protection is provided (in dollars per share)	$ 35.47
Maximum hedge price at which upside benefit is provided (in dollars per share)	$ 44.72
Fair value of derivative contracts, net	$ 53,316

DERIVATIVE CONTRACTS AND COLL_4

DERIVATIVE CONTRACTS AND COLLATERALIZED INDEBTEDNESS - Schedule of Interest Rate Derivatives (Details) - Interest Rate Swap	Dec. 31, 2018USD ($)
Derivative Instrument Maturity Date 2026, Fixed 1.665%
Derivative [Line Items]
Notional Amount	$ 750,000,000
Fixed interest rate	1.665%
Derivative Instrument Maturity Date 2026, Fixed 1.68%
Derivative [Line Items]
Notional Amount	$ 750,000,000
Fixed interest rate	1.68%
Derivative Instrument Notional Amount 2,970,000, 0.226% Basis Spread
Derivative [Line Items]
Notional Amount	$ 2,970,000,000
Derivative Instrument Notional Amount 2,970,000, 0.226% Basis Spread | LIBOR
Derivative [Line Items]
Basis spread	0.226%
Derivative Instrument Notional Amount 1,496,250, 0.226% Basis Spread
Derivative [Line Items]
Notional Amount	$ 1,496,250,000
Derivative Instrument Notional Amount 1,496,250, 0.226% Basis Spread | LIBOR
Derivative [Line Items]
Basis spread	0.226%
Derivative Instrument Notional Amount 1,255,513, 0.225% Basis Spread
Derivative [Line Items]
Notional Amount	$ 1,255,513,000
Derivative Instrument Notional Amount 1,255,513, 0.225% Basis Spread | LIBOR
Derivative [Line Items]
Basis spread	0.225%
Derivative Instrument Maturity Date 2022, Fixed 2.7177%
Derivative [Line Items]
Notional Amount	$ 500,000,000
Fixed interest rate	2.7177%
Derivative Instrument Maturity Date 2022, Fixed 2.733%
Derivative [Line Items]
Notional Amount	$ 500,000,000
Fixed interest rate	2.733%
Derivative Instrument Maturity Date 2022, Fixed 2.722%
Derivative [Line Items]
Notional Amount	$ 500,000,000
Fixed interest rate	2.722%
Derivative Instrument Maturity Date 2026, Fixed 2.9155%
Derivative [Line Items]
Notional Amount	$ 750,000,000
Fixed interest rate	2.9155%
Derivative Instrument Maturity Date 2026, Fixed 2.9025%
Derivative [Line Items]
Notional Amount	$ 750,000,000
Fixed interest rate	2.9025%

DERIVATIVE CONTRACTS AND COLL_5

DERIVATIVE CONTRACTS AND COLLATERALIZED INDEBTEDNESS - Location of Assets and Liabilities Within the Consolidated Balance Sheets (Details) - Not Designated as Hedging Instruments - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 111,319	$ 52,545
Liability Derivatives	132,978	239,951
Interest Rate Swap | Current derivative contracts
Derivatives, Fair Value [Line Items]
Asset Derivatives	1,975	0
Interest Rate Swap | Long-term derivative contracts
Derivatives, Fair Value [Line Items]
Asset Derivatives	0	0
Interest Rate Swap | Short-term liabilities under derivative contracts
Derivatives, Fair Value [Line Items]
Liability Derivatives	70	0
Interest Rate Swap | Long-term liabilities under derivative contracts
Derivatives, Fair Value [Line Items]
Liability Derivatives	(132,908)	(77,902)
Prepaid forward contracts | Current derivative contracts
Derivatives, Fair Value [Line Items]
Asset Derivatives	0	52,545
Prepaid forward contracts | Long-term derivative contracts
Derivatives, Fair Value [Line Items]
Asset Derivatives	109,344	0
Prepaid forward contracts | Short-term liabilities under derivative contracts
Derivatives, Fair Value [Line Items]
Liability Derivatives	0	(52,545)
Prepaid forward contracts | Long-term liabilities under derivative contracts
Derivatives, Fair Value [Line Items]
Liability Derivatives	$ 0	$ (109,504)

DERIVATIVE CONTRACTS AND COLL_6

DERIVATIVE CONTRACTS AND COLLATERALIZED INDEBTEDNESS - Settlements of Collateralized Indebtedness (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Number of shares (in shares)	16,139,868	26,815,368
Collateralized indebtedness settled	$ (516,537)	$ (774,703)
Derivatives contracts settled	24	(56,356)
Repayment of collateralized indebtedness and related derivative contracts	(516,513)	(831,059)	$ (143,102)
Proceeds from new monetization contracts	516,513	838,794	$ 179,388
Net cash proceeds	$ 0	$ 7,735

FAIR VALUE MEASUREMENT - Assets

FAIR VALUE MEASUREMENT - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2017
Liabilities:
Contingent consideration related to 2017 and 2018 acquisitions		$ 4,500	$ 1,695
Fair Value Measured on a Recurring Basis | Level I
Assets:
Investment securities	$ 1,462,626		1,720,357
Fair Value Measured on a Recurring Basis | Level III
Liabilities:
Contingent consideration related to 2017 and 2018 acquisitions	6,195		32,233
Prepaid forward contracts | Fair Value Measured on a Recurring Basis | Level II
Assets:
Derivative asset	109,344		52,545
Liabilities:
Derivative liability	0		162,049
Interest rate swap contracts | Fair Value Measured on a Recurring Basis | Level II
Assets:
Derivative asset	1,975		0
Liabilities:
Derivative liability	132,978		77,902
Money market funds | Fair Value Measured on a Recurring Basis | Level I
Assets:
Money market funds	$ 91,852		$ 5,949

FAIR VALUE MEASUREMENT - Narrat

FAIR VALUE MEASUREMENT - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Contingent consideration related to 2017 and 2018 acquisitions	$ 4,500	$ 1,695
Percent of contractual amount of acquisitions recognized	100.00%	42.00%

FAIR VALUE MEASUREMENT - Fair V

FAIR VALUE MEASUREMENT - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	$ 22,787,410	$ 21,919,331
Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	23,235,572	23,279,472
CSC Holdings | Credit facility debt | Carrying Amount | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	5,915,559	3,393,306
CSC Holdings | Credit facility debt | Estimated Fair Value | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	5,972,500	3,435,000
CSC Holdings | Collateralized indebtedness | Carrying Amount | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	1,406,182	1,349,474
CSC Holdings | Collateralized indebtedness | Estimated Fair Value | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	1,374,203	1,305,932
CSC Holdings | Senior guaranteed notes | Carrying Amount | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	5,847,758	2,291,185
CSC Holdings | Senior guaranteed notes | Estimated Fair Value | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	5,646,468	2,420,000
CSC Holdings | Senior notes and debentures | Carrying Amount | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	8,416,610	6,409,889
CSC Holdings | Senior notes and debentures | Estimated Fair Value | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	8,972,722	7,221,846
CSC Holdings | Notes payable | Carrying Amount | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	64,212	56,956
CSC Holdings | Notes payable | Estimated Fair Value | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	63,940	55,289
Cablevision Systems Corp. | Senior notes and debentures | Carrying Amount | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	1,095,193	1,818,115
Cablevision Systems Corp. | Senior notes and debentures | Estimated Fair Value | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	1,163,843	1,931,239
Cequel Corp. | Credit facility debt | Carrying Amount | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	0	1,250,217
Cequel Corp. | Credit facility debt | Estimated Fair Value | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	0	1,258,675
Cequel Corp. | Senior notes and debentures | Carrying Amount | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	0	2,770,737
Cequel Corp. | Senior notes and debentures | Estimated Fair Value | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	0	2,983,615
Cequel Corp. | Notes payable | Carrying Amount | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	41,896	8,946
Cequel Corp. | Notes payable | Estimated Fair Value | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	41,896	8,946
Cequel Corp. | Senior secured notes | Carrying Amount | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	0	2,570,506
Cequel Corp. | Senior secured notes | Estimated Fair Value | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	$ 0	$ 2,658,930

INCOME TAXES - Income Tax Expen

INCOME TAXES - Income Tax Expense (Benefit) Continuing Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current expense (benefit):
Federal	$ (1,865)	$ 5,261	$ (981)
State	32,347	12,530	5,310
Total current expense (benefit)	30,482	17,791	4,329
Deferred benefit:
Federal	26,141	(2,095,930)	(223,159)
State	(93,744)	(784,224)	(40,830)
Total deferred benefit	(67,603)	(2,880,154)	(263,989)
Tax expense (benefit) relating to uncertain tax positions	(1,534)	11	(6)
Income tax benefit	$ (38,655)	$ (2,862,352)	$ (259,666)

INCOME TAXES - Effective Tax Ra

INCOME TAXES - Effective Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Federal tax benefit at statutory rate	$ (3,793)	$ (478,656)	$ (381,901)
State income taxes, net of federal impact	(8,103)	(61,698)	(39,336)
Changes in the valuation allowance	15,987	(111)	297
Impact of Federal Tax Reform	0	(2,332,677)	0
Changes in the state rates used to measure deferred taxes, net of federal impact	(52,915)	(12,896)	153,239
Tax benefit relating to uncertain tax positions	(514)	(253)	(120)
Non-deductible share-based compensation related to the carried unit plan	8,677	20,101	5,029
Non-deductible Cablevision Acquisition transaction costs	0	0	4,457
Other non-deductible expenses	2,200	3,405	1,551
Other, net	(194)	433	(2,882)
Income tax benefit	$ (38,655)	$ (2,862,352)	$ (259,666)

INCOME TAXES - Narrative (Detai

INCOME TAXES - Narrative (Details) - USD ($) $ in Thousands	Dec. 22, 2017	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Impact from changes in tax rates, benefit				$ 52,915	$ 12,896	$ (153,239)
Deferred income taxes				(67,603)	(2,880,154)	$ (263,989)
Net operating loss carryforward		$ 1,915,759		1,915,759
Alternative minimum tax credits		24,126		24,126
Research credits		17,806		17,806
Unrecognized tax benefits that would impact effective tax rate		2,104		2,104
Tax expense related to uncertain tax positions				$ 2,123
Federal Tax Reform
Business Acquisition [Line Items]
Impact from changes in tax rates, benefit	$ 2,332,677	$ 52,915
Accounting Standards Update 2016-09
Business Acquisition [Line Items]
Noncash deferred tax benefit					$ 2,332,677
Unrealized excess tax benefits recognized with the adoption of ASU 2016-09			$ 2,163
Tax Liability, Refund Request Percent				50.00%
New Jersey
Business Acquisition [Line Items]
Noncash deferred tax benefit				$ 52,915
Surtax				2.50%

INCOME TAXES - Deferred Tax Ass

INCOME TAXES - Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Noncurrent
NOLs and tax credit carry forwards	$ 571,413	$ 785,809
Compensation and benefit plans	42,484	49,698
Partnership investments	60,413	68,054
Restructuring liability	9,364	33,247
Other liabilities	38,473	40,149
Liabilities under derivative contracts	20,846	21,034
Interest deferred for tax purposes	166,668	128,516
Other	11,531	8,849
Deferred tax asset	921,192	1,135,356
Valuation allowance	(25,400)	(3,000)
Net deferred tax asset, noncurrent	895,792	1,132,356
Fixed assets and intangibles	(5,496,103)	(5,729,274)
Investments	(71,167)	(113,628)
Prepaid expenses	(7,543)	(8,105)
Fair value adjustments related to debt and deferred financing costs	(40,083)	(40,215)
Other	(4,833)	(10,420)
Deferred tax liability, noncurrent	(5,619,729)	(5,901,642)
Total net deferred tax liability	$ (4,723,937)	$ (4,769,286)

INCOME TAXES - Unrecognized Tax

INCOME TAXES - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	$ 4,036	$ 4,025
Increases related to prior year tax positions		11
Decreases related to prior year tax positions	(1,456)
Ending balance	$ 2,580	$ 4,036

SHARE-BASED COMPENSATION - Narr

SHARE-BASED COMPENSATION - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	Nov. 02, 2018	Jun. 20, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Nov. 30, 2018
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense		$ 3,848				$ 9,159
Carry Unit Plan | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period			60 days
Repurchase period following fourth anniversary			60 days
Carry unit plan, written promissory note period			3 years
Weighted average fair value (in dollars per unit)			$ 1.95	$ 2.50	$ 1.76
Share based compensation expense			$ 41,321	$ 57,430	$ 14,368
Carry Unit Plan | Restricted Stock Units | Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage			50.00%
Carry Unit Plan | Restricted Stock Units | Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage			25.00%
Carry Unit Plan | Restricted Stock Units | Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage			25.00%
2017 LTIP | Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense			$ 18,491
Awards authorized (in shares)							19,879,291
Vesting period	4 years
2017 LTIP | Stock options | Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage	50.00%
2017 LTIP | Stock options | Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage	25.00%
2017 LTIP | Stock options | Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage	25.00%

SHARE-BASED COMPENSATION - Carr

SHARE-BASED COMPENSATION - Carrying Unit Award Activity (Details) - Carry Unit Plan	12 Months Ended
	Dec. 31, 2018$ / sharesshares
Weighted Average Grant Date Fair Value
Balance at beginning of period, weighted average grant date fair value (in dollars per share) | $ / shares	$ 0.71
Vested weighted average grant date fair value (in dollars per share) | $ / shares	0.37
Forfeited weighted average grant date fair value (in dollars per share) | $ / shares	0.62
Balance at end of period, weighted average grant date fair value (in dollars per share) | $ / shares	$ 1.14
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)	168,550,001
Vested (in shares)	(68,037,500)
Forfeited (in shares)	(16,937,501)
Ending balance (in shares)	83,575,000
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Beginning balance (in shares)	10,000,000
Vested (in shares)	0
Forfeited (in shares)	0
Ending balance (in shares)	10,000,000

SHARE-BASED COMPENSATION - Stoc

SHARE-BASED COMPENSATION - Stock Option Activity (Details) - 2017 LTIP - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Weighted Average Exercise Price Per Share
Beginning balance (in dollars per share)	$ 17.45
Granted (in dollars per share)	17.58
Forfeited (in dollars per share)	17.92
Ending balance (in dollars per share)	17.50	$ 17.45
Options exercisable (in dollars per share)	$ 0
Options outstanding, Weighted Average Remaining Contractual Term (in years)	9 years 5 months 19 days	9 years 11 months 19 days
Options exercisable, Weighted Average Remaining Contractual Term (in years)	0 years
Options outstanding, Aggregate Intrinsic Value	$ (11,057,000)	$ 8,331,000
Options exercisable, Aggregate Intrinsic Value	$ 0
Time Vesting
Shares Under Option
Beginning balance (in shares)	5,110,747
Granted (in shares)	6,753,659
Forfeited (in shares)	(634,238)
Ending balance (in shares)	11,230,168	5,110,747
Options exercisable (in shares)	0
Performance Based Vesting
Shares Under Option
Beginning balance (in shares)	0
Granted (in shares)	95,953
Forfeited (in shares)	(22,314)
Ending balance (in shares)	73,639	0
Options exercisable (in shares)	0

SHARE-BASED COMPENSATION - Fair

SHARE-BASED COMPENSATION - Fair Value Assumptions For Stock Options (Details) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Risk-free interest rate	2.74%	2.30%
Expected life (in years)	6 years 5 months 25 days	6 years 5 months 9 days
Dividend yield	0.00%	0.00%
Volatility	35.72%	33.95%
Grant date fair value	$ 6.91	$ 8.77

AFFILIATE AND RELATED PARTY T_3

AFFILIATE AND RELATED PARTY TRANSACTIONS - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		12 Months Ended
	Apr. 30, 2018	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jun. 08, 2018	Jan. 08, 2018	Jul. 06, 2016
Related Party Transaction [Line Items]
Equity in net income (loss) from investment in related party				$ (10,849)	$ (10,040)	$ (1,132)
Related party expense				21,444	640,344	132,427
Other income. net				149	0	0
Cash distributions to shareholders		$ 839,700			840,035	445,176
Cash distributions			$ 79,617	1,499,935	919,317	365,559
Fees for Executive Services | Affiliates
Related Party Transaction [Line Items]
Related party expense				13,250	30,000	20,556
Equipment Purchase Costs | Affiliates
Related Party Transaction [Line Items]
Capital expenditures					4,578	1,025
Equipment Purchase Costs | Altice Management International
Related Party Transaction [Line Items]
Capital expenditures					17,434	44,121
Equipment Purchase Costs | Altice Labs S.A.
Related Party Transaction [Line Items]
Capital expenditures				14,951
Software Development Service Costs | Altice Labs S.A.
Related Party Transaction [Line Items]
Capital expenditures						740
I24News
Related Party Transaction [Line Items]
Equity in net income (loss) from investment in related party	$ 13,298			(1,130)	(2,821)
Ownership percentage	24.00%
Investment in affiliates and related parties					930
Newsday
Related Party Transaction [Line Items]
Equity in net income (loss) from investment in related party				9,719	7,219	1,132
Ownership percentage									25.00%
Investment in affiliates and related parties					3,579
CSC Holdings Revolving Credit Facility | Revolving Credit Facility
Related Party Transaction [Line Items]
Proceeds from credit facility debt		$ 500,000
Other Operating Expense | Transition Services | Affiliates
Related Party Transaction [Line Items]
Other operating expenses, charges for related party services				$ 3,057	4,057	887
Other income. net					$ 917	$ 2,589
Altice N.V. | Altice N.V. Distribution
Related Party Transaction [Line Items]
Management advisory and consulting fee							$ 30,000	$ 30,000

AFFILIATE AND RELATED PARTY T_4

AFFILIATE AND RELATED PARTY TRANSACTIONS - Revenue and Related Charges (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Related Party Transaction [Line Items]
Revenue	$ 2,575	$ 1,100	$ 1,086
Operating expenses:
Programming and other direct costs	(7,261)	(4,176)	(1,947)
Other operating expenses, net	(16,307)	(33,140)	(18,854)
Operating expenses, net	(23,568)	(37,316)	(20,801)
Interest expense	(600)	(90,405)	(112,712)
Other income. net	149	0	0
Loss on extinguishment of debt and write-off of deferred financing costs	0	(513,723)	0
Net charges	(21,444)	(640,344)	(132,427)
Capital Expenditures	$ 14,951	$ 22,012	45,886
Holdco Notes and Notes Payable to Affiliates
Operating expenses:
Interest expense			$ (10,155)

AFFILIATE AND RELATED PARTY T_5

AFFILIATE AND RELATED PARTY TRANSACTIONS - Amounts Due From and Due to Related Parties (Details) - Affiliates - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Due from related parties and affiliates	$ 17,557	$ 19,764
Due to related parties and affiliates	26,096	10,998
Altice US Finance S.A.
Related Party Transaction [Line Items]
Due from related parties and affiliates	13,100	12,951
Newsday
Related Party Transaction [Line Items]
Due from related parties and affiliates	490	2,713
Due to related parties and affiliates	22	33
Altice Labs S.A.
Related Party Transaction [Line Items]
Due to related parties and affiliates	4,864	7,354
Altice Management Americas
Related Party Transaction [Line Items]
Due from related parties and affiliates	1,271	33
Altice Dominican Republic
Related Party Transaction [Line Items]
Due from related parties and affiliates	2,550	0
I24
Related Party Transaction [Line Items]
Due from related parties and affiliates	0	4,036
Other Related Party
Related Party Transaction [Line Items]
Due from related parties and affiliates	146	31
Due to related parties and affiliates	5,975	3,611
Altice Management International
Related Party Transaction [Line Items]
Due to related parties and affiliates	$ 15,235	$ 0

COMMITMENTS AND CONTINGENCIES -

COMMITMENTS AND CONTINGENCIES - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Loss Contingencies [Line Items]
Rent expense	$ 104,298	$ 95,017	$ 65,881
U. S. District Court for the Eastern District of New York
Loss Contingencies [Line Items]
Litigation liability	5,000
Utility Pole
Loss Contingencies [Line Items]
Rent expense	$ 33,082	$ 31,308	$ 22,432

COMMITMENTS AND CONTINGENCIES_2

COMMITMENTS AND CONTINGENCIES - Future Cash Payments and Commitments (Details) $ in Thousands	Dec. 31, 2018USD ($)
Commitments and Contingencies Disclosure [Abstract]
Purchase obligation	$ 8,906,134
Purchase obligation, due in year 1	3,190,028
Purchase obligation, due in years 2 and 3	4,940,814
Purchase obligation, due in years 4 and 5	742,931
Purchase obligation, due after year 5	32,361
Guarantees	36,912
Guarantees, due in year 1	36,912
Guarantees, due in years 2 and 3	0
Guarantees, due in years 4 and 5	0
Guarantees, due after year 5	0
Letters of credit	147,564
Letters of credit, due in year 1	120
Letters of credit, due in years 2 and 3	147,444
Letters of credit, due in years 4 and 5	0
Letters of credit, due after year 5	0
Total contractual obligation	9,090,610
Total contractual obligation, due in year 1	3,227,060
Total contractual obligation, due in years 2 and 3	5,088,258
Total contractual obligation, due in years 4 and 5	742,931
Total contractual obligation, due after year 5	$ 32,361

BENEFIT PLANS - Funded Status (

BENEFIT PLANS - Funded Status (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Change in projected benefit obligation:
Benefit obligation, beginning of year	$ 299,066	$ 382,517
Interest cost	9,248	11,786	$ 6,946
Actuarial loss (gain)	(9,894)	13,171
Curtailments	0	6,332
Settlements	2,373	6,910
Benefits paid	(36,278)	(121,650)
Benefit obligation, end of year	264,515	299,066	382,517
Change in plan assets:
Fair value of plan assets, beginning of year	195,768	284,118
Actual gain (loss) on plan assets, net	(5,705)	6,356
Employer contributions	13,725	26,944
Benefits paid	(36,278)	(121,650)
Fair value of plan assets, end of year	167,510	195,768	$ 284,118
Unfunded status at end of year	$ (97,005)	$ (103,298)

BENEFIT PLANS - Narrative (Deta

BENEFIT PLANS - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Retirement Benefits [Abstract]
Percent of participants vested	100.00%
Accumulated benefit obligation	$ 264,515	$ 299,066
Expected future employer contributions, next fiscal year	36,000
Defined contribution plan cost	$ 28,232	$ 27,577	$ 28,501

BENEFIT PLANS - Net Funded Stat

BENEFIT PLANS - Net Funded Status (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Retirement Benefits [Abstract]
Defined Benefit Plans	$ (97,005)	$ (103,298)
Less: Current portion related to nonqualified plans	211	135
Long-term defined benefit plan obligations	$ (96,794)	$ (103,163)

BENEFIT PLANS - Components of N

BENEFIT PLANS - Components of Net Periodic Benefit Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Retirement Benefits [Abstract]
Interest cost	$ 9,248	$ 11,786	$ 6,946
Expected return on plan assets, net	(987)	(4,905)	(3,880)
Curtailment loss	0	3,137	231
Settlement loss (income) (reclassified from accumulated other comprehensive loss)	1,268	1,845	(154)
Non-operating pension costs	$ 9,529	$ 11,863	$ 3,143

BENEFIT PLANS - Weighted Averag

BENEFIT PLANS - Weighted Average Assumptions Used to Determine Benefit Obligation and Cost (Details)	6 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017
Benefit Costs
Discount rate	3.53%	3.87%	3.69%
Rate of increase in future compensation levels	0.00%	0.00%	0.00%
Expected rate of return on plan assets (Pension Plan only)	3.97%	3.67%	3.90%
Benefit Obligations
Discount rate		4.20%	3.50%
Rate of increase in future compensation levels		0.00%	0.00%

BENEFIT PLANS - Weighted Aver_2

BENEFIT PLANS - Weighted Average Asset Allocations (Details)	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	100.00%	100.00%
Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	29.00%	32.00%
Fixed income securities
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	65.00%	66.00%
Cash equivalents and other
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	6.00%	2.00%

BENEFIT PLANS - Fair Value of P

BENEFIT PLANS - Fair Value of Plan Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 167,510	$ 195,768	$ 284,118
Plan Assets, Excluding Cash And Net Payables [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	165,619	200,243
Plan Assets, Excluding Cash And Net Payables [Member] | Level I
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	53,483	68,524
Plan Assets, Excluding Cash And Net Payables [Member] | Level II
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	112,136	131,719
Plan Assets, Excluding Cash And Net Payables [Member] | Level III
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	49,140	61,833
Mutual funds | Level I
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	49,140	61,833
Mutual funds | Level II
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Mutual funds | Level III
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign issued corporate debt
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	14,002	10,721
Foreign issued corporate debt | Level I
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign issued corporate debt | Level II
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	14,002	10,721
Foreign issued corporate debt | Level III
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
U.S. corporate debt
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	43,190	39,992
U.S. corporate debt | Level I
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
U.S. corporate debt | Level II
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	43,190	39,992
U.S. corporate debt | Level III
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Government debt
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3,988	4,645
Government debt | Level I
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Government debt | Level II
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3,988	4,645
Government debt | Level III
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
U.S. Treasury securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	38,657	62,601
U.S. Treasury securities | Level I
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
U.S. Treasury securities | Level II
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	38,657	62,601
U.S. Treasury securities | Level III
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Asset-backed securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	8,907	10,978
Asset-backed securities | Level I
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Asset-backed securities | Level II
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	8,907	10,978
Asset-backed securities | Level III
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	205
Other | Level I
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Other | Level II
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	205
Other | Level III
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	7,530	9,473
Cash equivalents | Level I
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4,343	6,691
Cash equivalents | Level II
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3,187	2,782
Cash equivalents | Level III
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 0	$ 0

BENEFIT PLANS - Expected Benefi

BENEFIT PLANS - Expected Benefit Payments (Details) $ in Thousands	Dec. 31, 2018USD ($)
Retirement Benefits [Abstract]
2,019	$ 21,137
2,020	17,067
2,021	17,690
2,022	16,837
2,023	20,119
2024-2028	$ 93,793

ALLOWANCE FOR DOUBTFUL ACCOUN_3

ALLOWANCE FOR DOUBTFUL ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Allowance for Doubtful Accounts Receivable [Roll Forward]
Balance at Beginning of Period	$ 13,420	$ 11,677	$ 1,051
Provision for doubtful accounts	71,426	74,183	53,249
Deductions/ Write-Offs and Other Charges	(71,326)	(72,440)	(42,623)
Balance at End of Period	$ 13,520	$ 13,420	$ 11,677

INTERIM FINANCIAL INFORMATION_2

INTERIM FINANCIAL INFORMATION (Details) - USD ($) $ / shares in Units, $ in Thousands	Dec. 22, 2017	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Quarterly Financial Information [Line Items]
Total revenue		$ 2,454,940	$ 2,417,801	$ 2,364,153	$ 2,329,714	$ 2,359,808	$ 2,322,521	$ 2,322,362	$ 2,302,259	$ 9,566,608	$ 9,306,950	$ 6,017,212
Operating expenses		(1,926,216)	(1,912,243)	(2,029,094)	(2,016,676)	(2,142,753)	(2,201,946)	(2,069,094)	(2,052,149)	(7,884,229)	(8,465,942)	(5,554,403)
Operating income		528,724	505,558	335,059	313,038	217,055	120,575	253,268	250,110	1,682,379	841,008	462,809
Net income (loss)		213,808	33,739	(98,004)	(128,949)	2,243,325	(192,434)	(479,939)	(76,188)	20,594	1,494,764	(831,479)
Net loss (income) attributable to noncontrolling interests		(722)	(1,186)	149	(2)	(850)	(135)	(365)	(237)	(1,761)	(1,587)	(551)
Net income (loss) attributable to Altice USA, Inc. stockholders		$ 213,086	$ 32,553	$ (97,855)	$ (128,951)	$ 2,242,475	$ (192,569)	$ (480,304)	$ (76,425)	$ 18,833	$ 1,493,177	$ (832,030)
Basic and diluted income (loss) per share attributable to Altice USA Inc.'s stockholders (in dollars per share)		$ 0.30	$ 0.04	$ (0.13)	$ (0.17)	$ 3.04	$ (0.26)	$ (0.73)	$ (0.12)	$ 0.03	$ 2.15	$ (1.28)
Impact from changes in tax rates										$ (52,915)	$ (12,896)	$ 153,239
Payments of dividends									$ 79,617	1,499,935	919,317	365,559
Federal Tax Reform
Quarterly Financial Information [Line Items]
Impact from changes in tax rates	$ (2,332,677)	$ (52,915)
Pay TV
Quarterly Financial Information [Line Items]
Total revenue		1,033,649	$ 1,054,667	$ 1,034,404	$ 1,033,708	$ 1,049,135	$ 1,069,946	$ 1,071,163	1,083,878	4,156,428	4,274,122	2,788,873
Broadband
Quarterly Financial Information [Line Items]
Total revenue		743,725	729,907	712,202	701,621	681,779	658,278	642,620	625,918	2,887,455	2,608,595	1,651,574
Telephony
Quarterly Financial Information [Line Items]
Total revenue		162,007	161,351	163,499	166,038	169,064	172,479	178,261	180,961	652,895	700,765	465,771
Business services and wholesale
Quarterly Financial Information [Line Items]
Total revenue		348,087	344,193	337,388	333,090	330,510	324,642	323,641	319,420	1,362,758	1,298,213	819,541
Advertising
Quarterly Financial Information [Line Items]
Total revenue		162,103	123,066	109,898	87,582	121,712	89,292	97,501	83,361	482,649	391,866	252,049
Other
Quarterly Financial Information [Line Items]
Total revenue		$ 5,369	$ 4,617	$ 6,762	$ 7,675	$ 7,608	$ 7,884	$ 9,176	$ 8,721	$ 24,423	$ 33,389	$ 39,404

SUBSEQUENT EVENTS (Details)

SUBSEQUENT EVENTS (Details) - USD ($)	1 Months Ended		12 Months Ended
	Feb. 26, 2019	Jan. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Apr. 26, 2016	Oct. 12, 2012
Subsequent Event [Line Items]
Principal amount				$ 16,289,245,000
Short-term debt reclassified			$ 526,000,000
Long-term debt						$ 1,477,200,000
Repayments of line of credit			2,221,175,000	4,411,581,000	$ 9,133,543,000
Principal Amount			5,972,500,000	4,693,675,000			$ 480,000,000
Senior Notes
Subsequent Event [Line Items]
Principal amount			15,733,145,000
8.625% Notes due February 15, 2019 | Senior Notes
Subsequent Event [Line Items]
Principal amount			$ 526,000,000	526,000,000
Stated interest rate			8.625%
10.125% Notes due January 15, 2023 | Senior Notes
Subsequent Event [Line Items]
Principal amount			$ 1,800,000,000	$ 1,800,000,000
Stated interest rate			10.125%
CSC Holdings | Senior Guaranteed Notes Due 2029 | Senior Notes | Subsequent Event
Subsequent Event [Line Items]
Principal amount		$ 1,500,000,000
Stated interest rate	101.75%	6.50%
Increase to principal	$ 250,000,000
CSC Holdings | 8.625% Notes due February 15, 2019 | Senior Notes | Subsequent Event
Subsequent Event [Line Items]
Stated interest rate		8.625%
Redeemed debt		$ 526,000,000
CSC Holdings | 10.125% Notes due January 15, 2023 | Senior Notes | Subsequent Event
Subsequent Event [Line Items]
Stated interest rate	10.125%	10.125%
Redeemed debt	$ 894,700,000	$ 905,300,000
Redeemable debt, percent		107.594%
Short-term debt reclassified		$ 526,000,000
CSC Holdings | Incremental Term Loan B-4 | Term Loan | Subsequent Event
Subsequent Event [Line Items]
Principal amount	1,000,000,000
CSC Holdings | Revolving Credit Facility | Subsequent Event
Subsequent Event [Line Items]
Long-term debt		200,000,000
Repayments of line of credit	$ 250,000,000
Principal Amount		2,562,500,000
CSC Holdings | Debt Instrument, Redemption, Period One | Revolving Credit Facility | Subsequent Event
Subsequent Event [Line Items]
Principal Amount		2,170,000,000
CSC Holdings | Debt Instrument, Redemption, Period Two | Revolving Credit Facility | Subsequent Event
Subsequent Event [Line Items]
Principal Amount		$ 392,500,000
CSC Holdings | LIBOR | Incremental Term Loan B-4 | Term Loan | Subsequent Event
Subsequent Event [Line Items]
Basis spread on variable rate	3.00%
Debt discount rate	1.00%
CSC Holdings | LIBOR | Debt Instrument, Redemption, Period One | Revolving Credit Facility | Subsequent Event
Subsequent Event [Line Items]
Basis spread on variable rate		2.25%

CVC - DESCRIPTION OF BUSINESS_2

CVC - DESCRIPTION OF BUSINESS, RELATED MATTERS AND BASIS OF PRESENTATION (Details)

Jun. 21, 2016USD ($)$ / shares

Jun. 20, 2016USD ($)

Dec. 31, 2018USD ($)$ / shares

Dec. 31, 2017USD ($)$ / shares

Dec. 31, 2016USD ($)

Dec. 31, 2015USD ($)segment$ / shares

Jul. 31, 2017

Dec. 09, 2016USD ($)

Jul. 31, 2016

Jul. 21, 2016USD ($)

Jul. 06, 2016

Oct. 31, 2015USD ($)

Sep. 16, 2015$ / shares

Oct. 12, 2012USD ($)

Business Acquisition [Line Items]

Net interest expense

$ 1,556,282,000

$ 1,603,132,000

$ 1,456,541,000

Business Combination, Description [Abstract]

Principal Amount

16,289,245,000

Line of credit facility, aggregate principal amount

5,972,500,000

4,693,675,000

$ 480,000,000

Term Loan | 6.625% Notes due October 15, 2025

Business Combination, Description [Abstract]

Principal Amount

$ 1,000,000,000

1,000,000,000

Stated interest rate

6.625%

Senior Notes

Business Combination, Description [Abstract]

Principal Amount

$ 15,733,145,000

Senior Notes | 10.875% Notes due October 15, 2025

Business Combination, Description [Abstract]

Principal Amount

$ 1,684,221,000

$ 1,684,221,000

Stated interest rate

10.875%

10.875%

Common Class A

Business Combination, Description [Abstract]

Common stock, par value (in dollars per share) | $ / shares

$ 0.01

$ 0.01

Common Class B

Business Combination, Description [Abstract]

Common stock, par value (in dollars per share) | $ / shares

$ 0.01

$ 0.01

Cablevision Systems Corp.

Business Combination, Description [Abstract]

Business acquisition, share price (dollars per share) | $ / shares

$ 34.90

Consideration transfered

$ 9,958,323,000

Cablevision Systems Corp. | Common Class A

Business Combination, Description [Abstract]

Common stock, par value (in dollars per share) | $ / shares

$ 0.01

Cablevision Systems Corp. | Common Class B

Business Combination, Description [Abstract]

Common stock, par value (in dollars per share) | $ / shares

0.01

Cablevision Systems Corp. | Neptune Finco Corp. | Revolving Credit Facility | Senior Secured Credit Facilities

Business Combination, Description [Abstract]

Line of credit facility, aggregate principal amount

$ 2,000,000,000

Cablevision Systems Corp. | Neptune Finco Corp. | Term Loan | Senior Secured Credit Facilities

Business Combination, Description [Abstract]

Principal Amount

3,800,000,000

Cablevision Systems Corp. | Neptune Finco Corp. | Senior Notes | 10.875% Notes due October 15, 2025

Business Combination, Description [Abstract]

Principal Amount

$ 2,000,000,000

Stated interest rate

10.875%

Cablevision Systems Corp. | Neptune Finco Corp. | Senior Notes | 6.625% Notes due October 15, 2025

Business Combination, Description [Abstract]

Principal Amount

$ 1,000,000,000

Stated interest rate

6.625%

Cablevision Systems Corporation And Subsidiaries

Business Acquisition [Line Items]

Number of reportable business segments | segment

1

Net interest expense

$ 287,098,000

$ 585,764,000

Business Combination, Description [Abstract]

Consideration transfered

9,958,323,000

Cablevision Systems Corporation And Subsidiaries | Revolving Credit Facility

Business Combination, Description [Abstract]

Line of credit facility, aggregate principal amount

$ 2,300,000,000

$ 2,105,000,000

$ 2,000,000,000

Cablevision Systems Corporation And Subsidiaries | Common Class A

Business Combination, Description [Abstract]

Common stock, par value (in dollars per share) | $ / shares

$ 0.01

Cablevision Systems Corporation And Subsidiaries | Common Class B

Business Combination, Description [Abstract]

Common stock, par value (in dollars per share) | $ / shares

$ 0.01

Cablevision Systems Corporation And Subsidiaries | Altice N.V.

Business Combination, Description [Abstract]

Business acquisition, share price (dollars per share) | $ / shares

$ 34.90

Consideration transfered

$ 9,958,323,000

Cablevision Systems Corporation And Subsidiaries | Neptune Finco Corp. | Term Loan | Revolving Credit Facility | Senior Secured Credit Facilities

Business Combination, Description [Abstract]

Principal Amount

3,800,000,000

Cablevision Systems Corporation And Subsidiaries | Neptune Finco Corp. | Senior Notes | 10.125% Notes due January 15, 2023

Business Combination, Description [Abstract]

Principal Amount

$ 1,800,000,000

Stated interest rate

10.125%

Cablevision Systems Corporation And Subsidiaries | Neptune Finco Corp. | Senior Notes | 10.875% Notes due October 15, 2025

Business Combination, Description [Abstract]

Principal Amount

$ 2,000,000,000

Stated interest rate

10.875%

Cablevision Systems Corporation And Subsidiaries | Neptune Finco Corp. | Senior Notes | 6.625% Notes due October 15, 2025

Business Combination, Description [Abstract]

Principal Amount

$ 1,000,000,000

Stated interest rate

6.625%

Cablevision Systems Corporation And Subsidiaries | Affiliates | Altice N.V.

Business Combination, Description [Abstract]

Consideration transfered

$ 1,000,000,000

Indirect ownership interest by co-investors

30.00%

Cablevision Systems Corporation And Subsidiaries | Cablevision Systems Corp.

Business Combination, Description [Abstract]

Business acquisition, share price (dollars per share) | $ / shares

$ 34.90

Consideration transfered

$ 439,167,000

Newsday

Business Acquisition [Line Items]

Ownership percentage

25.00%

Newsday | Cablevision Systems Corporation And Subsidiaries

Business Acquisition [Line Items]

Ownership percentage of noncontrolling interest

75.00%

75.00%

Ownership percentage

25.00%

25.00%

CVC - SUMMARY OF SIGNIFICANT _3

CVC - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) $ in Thousands	Jan. 01, 2017USD ($)	Jun. 20, 2016USD ($)	Dec. 31, 2018USD ($)shares	Dec. 31, 2017USD ($)shares	Dec. 31, 2016USD ($)Voteshares	Dec. 31, 2015USD ($)shares
Entity Information [Line Items]
Advertising costs			$ 240,273	$ 224,120	$ 135,513
Antidilutive securities | shares			6,292,000,000	14,000,000
Cablevision Systems Corporation And Subsidiaries
Entity Information [Line Items]
Franchise fees and other taxes and fees		$ 95,432				$ 199,701
Advertising costs		$ 62,760				160,671
Award vesting percentage		100.00%
Debt issuance costs						67,119
Unrealized excess tax benefits recognized with the adoption of ASU 2016-09	$ 309,000
Dividends paid by Cablevision		$ 4,066				125,170
Performance Shares
Entity Information [Line Items]
Vesting period		3 years
Restricted Stock | Cablevision Systems Corporation And Subsidiaries
Entity Information [Line Items]
Dividends paid by Cablevision						3,935
Revolving Credit Facility | Cablevision Systems Corporation And Subsidiaries
Entity Information [Line Items]
Debt issuance costs						$ 7,588
CNYG Class A Common Stock | Cablevision Systems Corporation And Subsidiaries
Entity Information [Line Items]
Common stock number of votes per share | Vote					1
Number of shares of common stock issued upon conversion (in shares) | shares					1
Percentage of Board of Directors stockholders are entitled to elect (in hundredths)					25.00%
CNYG Class B Common Stock | Cablevision Systems Corporation And Subsidiaries
Entity Information [Line Items]
Common stock number of votes per share | Vote					10
Number of shares of common stock converted (in shares) | shares					1
Stock options | Cablevision Systems Corporation And Subsidiaries
Entity Information [Line Items]
Antidilutive securities | shares					0	1,160,000
Performance Shares | Cablevision Systems Corporation And Subsidiaries
Entity Information [Line Items]
Antidilutive securities | shares						1,772,000

CVC - SUMMARY OF SIGNIFICANT _4

CVC - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Common Stock of Cablevision (Details) - shares	6 Months Ended	12 Months Ended
	Jun. 20, 2016	Dec. 31, 2018	Dec. 31, 2016	Dec. 31, 2015
Common Stock Outstanding [Roll Forward]
Ending balance common stock, shares outstanding (in shares)		709,040,286
CNYG Class A Common Stock | Cablevision Systems Corporation And Subsidiaries
Common Stock of Cablevision [Abstract]
Number of shares of common stock issued upon conversion (in shares)			1
Percentage of Board of Directors stockholders are entitled to elect (in hundredths)			25.00%
Common Stock Outstanding [Roll Forward]
Beginning balance common stock, shares outstanding (in shares)	222,572,210		222,572,210	220,219,935
Employee and non-employee director stock transactions (in shares)	(185,276)			2,352,275
Ending balance common stock, shares outstanding (in shares)	222,386,934			222,572,210
CNYG Class B Common Stock | Cablevision Systems Corporation And Subsidiaries
Common Stock of Cablevision [Abstract]
Number of shares of common stock converted (in shares)			1
Common Stock Outstanding [Roll Forward]
Beginning balance common stock, shares outstanding (in shares)	54,137,673		54,137,673	54,137,673
Ending balance common stock, shares outstanding (in shares)	54,137,673			54,137,673

CVC - SUMMARY OF SIGNIFICANT _5

CVC - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Dividends (Details) - Cablevision Systems Corporation And Subsidiaries - USD ($) $ / shares in Units, $ in Thousands	Aug. 06, 2015	May 01, 2015	Feb. 24, 2015	Jun. 20, 2016	Dec. 31, 2015
Dividends [Abstract]
Dividend per share (in dollars per share)				$ 0	$ 0.45
Dividends paid by Cablevision				$ 4,066	$ 125,170
Restricted Stock
Dividends [Abstract]
Dividends paid by Cablevision					$ 3,935
Dividend Declared 2015 Q3 | CNYG Class A Common Stock
Dividends [Abstract]
Dividend, declaration date	Aug. 6, 2015
Dividend per share (in dollars per share)	$ 0.15
Dividend, record date	Aug. 21, 2015
Dividend, payment date	Sep. 10, 2015
Dividend Declared 2015 Q2 | CNYG Class A Common Stock
Dividends [Abstract]
Dividend, declaration date		May 1, 2015
Dividend per share (in dollars per share)		$ 0.15
Dividend, record date		May 22, 2015
Dividend, payment date		Jun. 12, 2015
Dividend Declared 2015 Q1 | CNYG Class A Common Stock
Dividends [Abstract]
Dividend, declaration date			Feb. 24, 2015
Dividend per share (in dollars per share)			$ 0.15
Dividend, record date			Mar. 16, 2015
Dividend, payment date			Apr. 3, 2015

CVC - SUMMARY OF SIGNIFICANT _6

CVC - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Income (Loss) Per Common Share (Details) - shares	6 Months Ended	12 Months Ended
	Jun. 20, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Effect of dilution:
Antidilutive securities excluded from diluted weighted average shares outstanding (in shares)		6,292,000,000	14,000,000
Cablevision Systems Corporation And Subsidiaries
Reconciliation of Weighted Average Shares Used in Calculations of Basic and Diluted Net Income Per Share [Abstract]
Basic weighted average common shares (in thousands)	272,035,000			272,035,000	269,388,000
Effect of dilution:
Stock options (in shares)				4,444,000	3,532,000
Restricted stock awards (in shares)				3,720,000	3,419,000
Diluted weighted average common shares (in shares)	280,199,000			280,199,000	276,339,000
Stock options | Cablevision Systems Corporation And Subsidiaries
Effect of dilution:
Antidilutive securities excluded from diluted weighted average shares outstanding (in shares)				0	1,160,000
Performance Shares | Cablevision Systems Corporation And Subsidiaries
Effect of dilution:
Antidilutive securities excluded from diluted weighted average shares outstanding (in shares)					1,772,000

CVC - ALLOWANCE FOR DOUBTFUL _3

CVC - ALLOWANCE FOR DOUBTFUL ACCOUNTS (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 20, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Activity related to the allowance for doubtful accounts
Balance at Beginning of Period	$ 1,051	$ 13,420	$ 11,677	$ 1,051
Provision for Bad Debt		71,426	74,183	53,249
Deductions/Write-Offs and Other Charges		(71,326)	(72,440)	(42,623)
Balance at End of Period		$ 13,520	$ 13,420	11,677	$ 1,051
Cablevision Systems Corporation And Subsidiaries
Activity related to the allowance for doubtful accounts
Balance at Beginning of Period	6,039			$ 6,039	12,112
Provision for Bad Debt	13,240				35,802
Deductions/Write-Offs and Other Charges	(12,378)				(41,875)
Balance at End of Period	$ 6,901				$ 6,039

CVC - SUPPLEMENTAL CASH FLOW _3

CVC - SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 20, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Continuing Operations:
Property and equipment accrued but unpaid		$ 213,936	$ 171,604	$ 155,653
Notes payable issued to vendor for the purchase of equipment	$ 0	95,394	40,131	12,449
Capital lease obligations	0	13,548	9,385	0
Dividends payable on unvested restricted share awards	0
Supplemental Data:
Cash interest paid		1,481,468	1,765,126	1,192,370
Income taxes paid, net		$ 13,667	$ 29,006	$ 1,538
Cablevision Systems Corporation And Subsidiaries
Continuing Operations:
Property and equipment accrued but unpaid	68,356				$ 63,843
Notes payable issued to vendor for the purchase of equipment					8,318
Capital lease obligations					19,987
Intangible asset obligations	290				1,121
Supplemental Data:
Cash interest paid	258,940				560,361
Income taxes paid, net	$ 7,082				3,849
Cablevision Systems Corporation And Subsidiaries | Restricted Stock
Continuing Operations:
Dividends payable on unvested restricted share awards					$ 3,517

CVC - RESTRUCTURING AND OTHER_2

CVC - RESTRUCTURING AND OTHER EXPENSE (Details) - USD ($) $ in Thousands	Jun. 21, 2016	Mar. 31, 2017	Jun. 20, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Restructuring Reserve [Roll Forward]
Restructuring charges				$ 31,027	$ 149,922	$ 226,577
Transaction costs		$ 2,479		7,521		13,845
Elimination of positions
Restructuring Reserve [Roll Forward]
Restructuring charges				15,580	142,679	215,420
Facility Realignment and Other Costs
Restructuring Reserve [Roll Forward]
Restructuring charges				$ 15,447	$ 7,243	$ 11,157
Cablevision Systems Corporation And Subsidiaries
Restructuring Reserve [Roll Forward]
Restructuring charges			$ 2,299				$ (1,649)
Transaction costs	$ 12,920		$ 19,924				$ 17,862
Cablevision Systems Corporation And Subsidiaries | Elimination of positions | 2016 Restructuring Plan
Restructuring Reserve [Roll Forward]
Restructuring charges	188,847
Cablevision Systems Corporation And Subsidiaries | Facility Realignment and Other Costs | 2016 Restructuring Plan
Restructuring Reserve [Roll Forward]
Restructuring charges	$ 10,410

CVC - DISCONTINUED OPERATIONS (

CVC - DISCONTINUED OPERATIONS (Details) - Cablevision Systems Corporation And Subsidiaries - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 20, 2016	Dec. 31, 2015
DISCONTINUED OPERATIONS
Income (loss) before income taxes		$ 21,272
Income (loss) from discontinued operations, net of income taxes	$ 0	12,541
Discontinued operations, legal matter expense		21,000
Discontinued operations legal matter, aggregate expense, including statutory interest, net of taxes		$ 12,380

CVC - PROPERTY, PLANT AND EQU_3

CVC - PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 20, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		$ 9,873,552	$ 8,623,405
Less accumulated depreciation and amortization		(4,044,671)	(2,599,579)
Property, plant and equipment, net		5,828,881	6,023,826
Depreciation expense on property, plant and equipment, including capital leases		1,508,125	1,588,764	$ 1,046,896
Headends and related equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		1,852,105	1,626,293
Infrastructure
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		4,595,143	4,003,845
Equipment and software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		1,083,166	918,298
Construction in progress (including materials and supplies)
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		215,684	240,496
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		57,448	52,545
Transportation equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		146,387	138,147
Buildings and building improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		411,573	394,421
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		109,110	108,071
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		$ 48,426	$ 47,563
Minimum | Headends and related equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life		5 years
Minimum | Infrastructure
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life		5 years
Minimum | Equipment and software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life		3 years
Minimum | Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life		5 years
Minimum | Transportation equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life		5 years
Minimum | Buildings and building improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life		10 years
Maximum | Headends and related equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life		25 years
Maximum | Infrastructure
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life		25 years
Maximum | Equipment and software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life		10 years
Maximum | Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life		8 years
Maximum | Transportation equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life		10 years
Maximum | Buildings and building improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life		40 years
Cablevision Systems Corporation And Subsidiaries
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross					$ 12,642,363
Less accumulated depreciation and amortization					(9,625,348)
Property, plant and equipment, net					3,017,015
Depreciation expense on property, plant and equipment, including capital leases	$ 404,234				857,440
Cablevision Systems Corporation And Subsidiaries | New Connections for Residence Wiring
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	5 years
Cablevision Systems Corporation And Subsidiaries | Customer equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross					1,952,336
Cablevision Systems Corporation And Subsidiaries | Headends and related equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross					2,388,289
Cablevision Systems Corporation And Subsidiaries | Infrastructure
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross					5,639,226
Cablevision Systems Corporation And Subsidiaries | Equipment and software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross					1,577,616
Cablevision Systems Corporation And Subsidiaries | Construction in progress (including materials and supplies)
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross					87,412
Cablevision Systems Corporation And Subsidiaries | Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross					96,561
Cablevision Systems Corporation And Subsidiaries | Transportation equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross					210,013
Cablevision Systems Corporation And Subsidiaries | Buildings and building improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross					322,267
Cablevision Systems Corporation And Subsidiaries | Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross					354,136
Cablevision Systems Corporation And Subsidiaries | Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross					14,507
Cablevision Systems Corporation And Subsidiaries | Software Development
Property, Plant and Equipment [Line Items]
Aggregate capitalized costs	$ 58,409				$ 144,349
Cablevision Systems Corporation And Subsidiaries | Minimum | Cable Television System Plant
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	10 years
Cablevision Systems Corporation And Subsidiaries | Minimum | Headend Facilities
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	4 years
Cablevision Systems Corporation And Subsidiaries | Minimum | Customer equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life					3 years
Cablevision Systems Corporation And Subsidiaries | Minimum | Headends and related equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life					4 years
Cablevision Systems Corporation And Subsidiaries | Minimum | Infrastructure
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life					3 years
Cablevision Systems Corporation And Subsidiaries | Minimum | Equipment and software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life					3 years
Cablevision Systems Corporation And Subsidiaries | Minimum | Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life					5 years
Cablevision Systems Corporation And Subsidiaries | Minimum | Transportation equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life					5 years
Cablevision Systems Corporation And Subsidiaries | Minimum | Buildings and building improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life					10 years
Cablevision Systems Corporation And Subsidiaries | Maximum | Cable Television System Plant
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	25 years
Cablevision Systems Corporation And Subsidiaries | Maximum | Headend Facilities
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	25 years
Cablevision Systems Corporation And Subsidiaries | Maximum | Customer equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life					5 years
Cablevision Systems Corporation And Subsidiaries | Maximum | Headends and related equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life					25 years
Cablevision Systems Corporation And Subsidiaries | Maximum | Infrastructure
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life					25 years
Cablevision Systems Corporation And Subsidiaries | Maximum | Equipment and software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life					10 years
Cablevision Systems Corporation And Subsidiaries | Maximum | Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life					12 years
Cablevision Systems Corporation And Subsidiaries | Maximum | Transportation equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life					18 years
Cablevision Systems Corporation And Subsidiaries | Maximum | Buildings and building improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life					40 years

CVC - PROPERTY, PLANT AND EQU_4

CVC - PROPERTY, PLANT AND EQUIPMENT - Assets under Capital Lease (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2015
Assets under capital lease
Buildings and equipment	$ 41,554	$ 48,936
Less accumulated amortization	(10,663)	(12,972)
Capital leased assets, net	$ 30,891	$ 35,964
Cablevision Systems Corporation And Subsidiaries | Equipment
Assets under capital lease
Buildings and equipment			$ 90,099
Less accumulated amortization			(28,119)
Capital leased assets, net			$ 61,980

CVC - OPERATING LEASES (Details

CVC - OPERATING LEASES (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 20, 2016	Dec. 31, 2015	Dec. 31, 2018
Future minimum annual payments for all operating leases
2,017			$ 47,905
2,018			50,356
2,019			43,362
2,020			34,882
2,021			25,234
Thereafter			$ 167,941
Cablevision Systems Corporation And Subsidiaries
Rent expense, including pole rentals	$ 41,573	$ 82,704
Future minimum annual payments for all operating leases
2,017	57,853
2,018	52,206
2,019	44,908
2,020	41,221
2,021	38,697
Thereafter	$ 141,063

CVC - INTANGIBLE ASSETS - Summa

CVC - INTANGIBLE ASSETS - Summary of Acquired Intangible Assets (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 20, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount		$ 7,075,611	$ 7,075,027
Accumulated Amortization		(2,882,787)	(2,008,573)
Net Carrying Amount		4,192,824	5,066,454
Amortization of intangible assets	$ 10,316	874,214	1,341,807	$ 653,410	$ 7,812
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount		5,970,884	5,970,884
Accumulated Amortization		(2,162,110)	(1,409,021)
Net Carrying Amount		3,808,774	4,561,863
Trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount		1,067,083	1,067,083
Accumulated Amortization		(701,998)	(588,574)
Net Carrying Amount		365,085	478,509
Amortizable intangible assets
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount		37,644	37,060
Accumulated Amortization		(18,679)	(10,978)
Net Carrying Amount		$ 18,965	$ 26,082
Minimum | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life		8 years
Minimum | Trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life		2 years
Minimum | Amortizable intangible assets
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life		1 year
Maximum | Customer relationships
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 | Amortizable intangible assets
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life		15 years
Cablevision Systems Corporation And Subsidiaries
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount					97,261
Accumulated Amortization					(60,310)
Net Carrying Amount					36,951
Cablevision Systems Corporation And Subsidiaries | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount					39,414
Accumulated Amortization					(27,778)
Net Carrying Amount					11,636
Cablevision Systems Corporation And Subsidiaries | Trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount					0
Accumulated Amortization					0
Net Carrying Amount					0
Cablevision Systems Corporation And Subsidiaries | Amortizable intangible assets
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount					57,847
Accumulated Amortization					(32,532)
Net Carrying Amount					$ 25,315
Cablevision Systems Corporation And Subsidiaries | Minimum | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life					10 years
Cablevision Systems Corporation And Subsidiaries | Minimum | Amortizable intangible assets
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life					3 years
Cablevision Systems Corporation And Subsidiaries | Maximum | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life					18 years
Cablevision Systems Corporation And Subsidiaries | Maximum | Amortizable intangible assets
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life					28 years

CVC - INTANGIBLE ASSETS - Sum_2

CVC - INTANGIBLE ASSETS - Summary of Acquired Indefinite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jun. 20, 2016	Dec. 31, 2015
Acquired Indefinite-lived Intangible Assets [Line Items]
Cable television franchises	$ 13,020,081	$ 13,020,081
Goodwill	$ 8,012,416	$ 8,019,861	$ 7,992,700		$ 2,040,402
Cablevision Systems Corporation And Subsidiaries
Acquired Indefinite-lived Intangible Assets [Line Items]
Goodwill			$ 5,838,959	$ 262,345	262,345
Total					1,001,443
Cablevision Systems Corporation And Subsidiaries | Cable television franchises
Acquired Indefinite-lived Intangible Assets [Line Items]
Cable television franchises					731,848
Cablevision Systems Corporation And Subsidiaries | Trademarks and other assets
Acquired Indefinite-lived Intangible Assets [Line Items]
Cable television franchises					$ 7,250

CVC - INTANGIBLE ASSETS - Goodw

CVC - INTANGIBLE ASSETS - Goodwill (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Jun. 20, 2016
Goodwill [Roll Forward]
Goodwill, ending balance	$ 2,040,402,000
Cablevision Systems Corporation And Subsidiaries
Goodwill [Roll Forward]
Accumulated impairment losses		$ (334,058,000)
Goodwill, ending balance	262,345,000
Goodwill impairments	0
Predecessor | Cablevision Systems Corporation And Subsidiaries
Goodwill [Roll Forward]
Goodwill, ending balance	$ 596,403,000

CVC - DEBT - Restricted Group C

CVC - DEBT - Restricted Group Credit Facility (Details) - USD ($)	Apr. 17, 2013	Oct. 12, 2012	Apr. 30, 2015	Jun. 20, 2016	Dec. 31, 2015	Dec. 31, 2018	Dec. 31, 2017	Dec. 09, 2016	Jul. 21, 2016	Oct. 31, 2015
Restricted Group Credit Facility [Abstract]
Line of credit facility, aggregate principal amount		$ 480,000,000				$ 5,972,500,000	$ 4,693,675,000
Notes payable to affiliates and related parties		$ 611,455,000
Eurodollar
Restricted Group Credit Facility [Abstract]
Basis spread on variable rate		3.50%
Base Rate
Restricted Group Credit Facility [Abstract]
Basis spread on variable rate		2.50%
Restricted Group
Restricted Group Credit Facility [Abstract]
Issue discount					$ 11,200,000
Restricted Group | Revolving Credit Facility
Restricted Group Credit Facility [Abstract]
Line of credit facility, aggregate principal amount	$ 1,500,000,000
Restricted Group | Term A Loan Facility
Restricted Group Credit Facility [Abstract]
Line of credit facility, aggregate principal amount	$ 958,510,000
Restricted Group | Term A Loan Facility | Eurodollar | Minimum
Restricted Group Credit Facility [Abstract]
Basis spread on variable rate	1.50%
Restricted Group | Term A Loan Facility | Eurodollar | Maximum
Restricted Group Credit Facility [Abstract]
Basis spread on variable rate	2.25%
Restricted Group | Term A Loan Facility | Base Rate | Minimum
Restricted Group Credit Facility [Abstract]
Basis spread on variable rate	0.50%
Restricted Group | Term A Loan Facility | Base Rate | Maximum
Restricted Group Credit Facility [Abstract]
Basis spread on variable rate	1.25%
Restricted Group | Term B Loan Facility
Restricted Group Credit Facility [Abstract]
Line of credit facility, aggregate principal amount	$ 1,200,000,000
Write-off of deferred financings costs					1,004,000
Repayments of credit facility debt			$ 200,000,000
Gain (loss) on extinguishment of debt					$ 731,000
Restricted Group | Term B Loan Facility | Eurodollar
Restricted Group Credit Facility [Abstract]
Basis spread on variable rate	2.50%
Restricted Group | Term B Loan Facility | Base Rate
Restricted Group Credit Facility [Abstract]
Basis spread on variable rate	1.50%
Revolving Credit Facility | Cablevision Systems Corporation And Subsidiaries
Restricted Group Credit Facility [Abstract]
Line of credit facility, aggregate principal amount								$ 2,300,000,000	$ 2,105,000,000	$ 2,000,000,000
Revolving Credit Facility | Eurodollar
Restricted Group Credit Facility [Abstract]
Basis spread on variable rate				3.25%
Revolving Credit Facility | Restricted Group
Restricted Group Credit Facility [Abstract]
Commitment fee percentage (in hundredths)	0.30%

CVC - DEBT - Credit Facility De

CVC - DEBT - Credit Facility Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2015
Credit facility debt [Abstract]
Principal amount		$ 16,289,245
Credit facility	$ 5,915,559	$ 4,643,523
Restricted Group
Credit facility debt [Abstract]
Debt unamortized discount			$ 11,200
Cablevision Systems Corporation And Subsidiaries | Restricted Group
Credit facility debt [Abstract]
Credit facility			$ 2,035,332
Cablevision Systems Corporation And Subsidiaries | Restricted Group | Term A Loan Facility
Credit facility debt [Abstract]
Stated interest rate			2.17%
Principal amount			$ 886,621
Credit facility			$ 885,105
Cablevision Systems Corporation And Subsidiaries | Restricted Group | Term B Loan Facility
Credit facility debt [Abstract]
Stated interest rate			2.92%
Principal amount			$ 1,159,031
Credit facility			$ 1,150,227

CVC - DEBT - Senior Notes and D

CVC - DEBT - Senior Notes and Debentures (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017	Apr. 26, 2016	Dec. 31, 2015	Oct. 12, 2012
Senior Notes and Debentures [Abstract]
Principal Amount		$ 16,289,245,000
Carrying amount			$ 1,477,200,000
Senior notes due to Newsday					$ 611,455,000
Senior Notes
Senior Notes and Debentures [Abstract]
Principal Amount	$ 15,733,145,000
Cablevision Systems Corporation And Subsidiaries | Debentures | 7.875% Debentures due February 2018
Senior Notes and Debentures [Abstract]
Stated interest rate				7.875%
Principal Amount				$ 300,000,000
Carrying amount				$ 299,091,000
Cablevision Systems Corporation And Subsidiaries | Debentures | 7.625% Debentures due July 2018
Senior Notes and Debentures [Abstract]
Stated interest rate				7.625%
Principal Amount				$ 500,000,000
Carrying amount				$ 498,942,000
Cablevision Systems Corporation And Subsidiaries | Senior Notes | Senior 8.625% Notes due February 2019
Senior Notes and Debentures [Abstract]
Stated interest rate				8.625%
Principal Amount				$ 526,000,000
Carrying amount				$ 511,079,000
Cablevision Systems Corporation And Subsidiaries | Senior Notes | Senior 6.75% Notes due November 2021
Senior Notes and Debentures [Abstract]
Stated interest rate				6.75%
Principal Amount				$ 1,000,000,000
Carrying amount				$ 985,640,000
Cablevision Systems Corporation And Subsidiaries | Senior Notes | Senior 5.25% Notes due June 1, 2024
Senior Notes and Debentures [Abstract]
Stated interest rate				5.25%
Principal Amount				$ 750,000,000
Carrying amount				$ 737,500,000
Cablevision Systems Corporation And Subsidiaries | Senior Notes | Senior 8.625% Notes due September 2017
Senior Notes and Debentures [Abstract]
Stated interest rate				8.625%
Principal Amount				$ 900,000,000
Carrying amount				$ 891,238,000
Cablevision Systems Corporation And Subsidiaries | Senior Notes | Senior 7.75% Notes due April 2018
Senior Notes and Debentures [Abstract]
Stated interest rate				7.75%
Principal Amount				$ 750,000,000
Carrying amount				744,402,000
Senior notes due to Newsday				$ 345,238,000
Cablevision Systems Corporation And Subsidiaries | Senior Notes | Senior 8% Notes due April 2020
Senior Notes and Debentures [Abstract]
Stated interest rate				8.00%
Principal Amount				$ 500,000,000
Carrying amount				494,410,000
Senior notes due to Newsday				$ 266,217,000
Cablevision Systems Corporation And Subsidiaries | Senior Notes | Senior 5.875% Notes due September 2022
Senior Notes and Debentures [Abstract]
Stated interest rate				5.875%
Principal Amount				$ 649,024,000
Carrying amount				$ 638,709,000

CVC - DEBT - Debt Transaction S

CVC - DEBT - Debt Transaction Subsequent to Merger (Details)

Oct. 11, 2016USD ($)

Apr. 17, 2013USD ($)

Oct. 12, 2012USD ($)

Oct. 31, 2016USD ($)

Jun. 20, 2016USD ($)

Sep. 30, 2016USD ($)

Dec. 31, 2018USD ($)

Dec. 31, 2017USD ($)

Dec. 09, 2016USD ($)

Sep. 09, 2016USD ($)

Jul. 21, 2016USD ($)

Jun. 21, 2016USD ($)

Oct. 31, 2015USD ($)

Debt Instrument [Line Items]

Principal Amount

$ 16,289,245,000

Credit facility

$ 5,915,559,000

4,643,523,000

Line of credit facility, aggregate principal amount

$ 480,000,000

5,972,500,000

$ 4,693,675,000

Base Rate

Debt Instrument [Line Items]

Basis spread on variable rate

2.50%

Eurodollar

Debt Instrument [Line Items]

Basis spread on variable rate

3.50%

Senior Notes

Debt Instrument [Line Items]

Principal Amount

$ 15,733,145,000

CSC Credit Facilities

Debt Instrument [Line Items]

Percentage of proceeds from asset sales required to pay down term loans

100.00%

Percentage of excess cash flow required when minimum leverage ratio is not met

50.00%

Percentage of excess cash flow required to pay down term loans when minimum leverage ratio is fulfilled

0.00%

Minimum debt leverage ratio required for zero percent of excess cash flow obligation to prepay debt

4.5

Line of credit facility, covenant, leverage ratio

5

Line of credit facility, covenant, minimum undrawn letters of credit

$ 15,000,000

Revolving Credit Facility | Eurodollar

Debt Instrument [Line Items]

Basis spread on variable rate

3.25%

Term Loan

Debt Instrument [Line Items]

Repayments of lines of credit

$ 2,030,699,000

$ 480,000,000

Deferred financing costs

$ 7,249,000

Issue discount

6,250,000

Term Loan | Base Rate

Debt Instrument [Line Items]

Basis spread on variable rate

2.25%

Cablevision Systems Corporation And Subsidiaries | Senior Notes Due 2023 | Senior Notes

Debt Instrument [Line Items]

Principal Amount

$ 1,800,000,000

Cablevision Systems Corporation And Subsidiaries | Senior Notes Due 2025 | Senior Notes

Debt Instrument [Line Items]

Principal Amount

2,000,000,000

Cablevision Systems Corporation And Subsidiaries | Guaranteed Senior Notes Due 2025 | Senior Notes

Debt Instrument [Line Items]

Principal Amount

1,000,000,000

Cablevision Systems Corporation And Subsidiaries | Guaranteed Senior Notes Due 2027 | Senior Notes

Debt Instrument [Line Items]

Stated interest rate

5.50%

Proceeds from credit facility debt

$ 1,310,000,000

Cablevision Systems Corporation And Subsidiaries | Extended Term Loan

Debt Instrument [Line Items]

Principal Amount

$ 2,500,000,000

Cablevision Systems Corporation And Subsidiaries | CSC Credit Facilities

Debt Instrument [Line Items]

Percentage of proceeds from asset sales required to pay down term loans

100.00%

Percentage of excess cash flow required when minimum leverage ratio is not met

50.00%

Percentage of excess cash flow required to pay down term loans when minimum leverage ratio is fulfilled

0.00%

Minimum debt leverage ratio required for zero percent of excess cash flow obligation to prepay debt

4.5

Line of credit facility, covenant, leverage ratio

5

Line of credit facility, covenant, minimum undrawn letters of credit

$ 15,000,000

Cablevision Systems Corporation And Subsidiaries | Revolving Credit Facility

Debt Instrument [Line Items]

Line of credit facility, aggregate principal amount

$ 2,300,000,000

$ 2,105,000,000

2,000,000,000

Line of credit facility, increase in borrowing capacity

$ 35,000,000

$ 70,000,000

Cablevision Systems Corporation And Subsidiaries | Revolving Credit Facility | Revolving Credit Facility Due 2020

Debt Instrument [Line Items]

Line of credit facility, increase in borrowing capacity

20,000,000

Cablevision Systems Corporation And Subsidiaries | Revolving Credit Facility | Revolving Credit Facility Due 2021

Debt Instrument [Line Items]

Line of credit facility, increase in borrowing capacity

$ 2,280,000,000

Cablevision Systems Corporation And Subsidiaries | Term Loan

Debt Instrument [Line Items]

Principal Amount

$ 3,800,000,000

Line of credit facility periodic payment, percentage of principal

0.25%

Write-off the deferred financing costs and the unamortized discount

$ 102,894,000

Line of credit facility, periodic payment amount

$ 9,500,000

Cablevision Systems Corporation And Subsidiaries | Term Loan | Base Rate

Debt Instrument [Line Items]

Basis spread on variable rate

2.00%

Cablevision Systems Corporation And Subsidiaries | Term Loan | Extended Term Loan

Debt Instrument [Line Items]

Basis spread on variable rate

3.75%

Cablevision Systems Corporation And Subsidiaries | Term Loan | Extended Term Loan | Eurodollar

Debt Instrument [Line Items]

Basis spread on variable rate

3.00%

Cablevision Systems Corporation And Subsidiaries | Term Loan | Extended Term Loan | LIBOR

Debt Instrument [Line Items]

Basis spread on variable rate

0.75%

CVC - DEBT - Summary of Debt Ma

CVC - DEBT - Summary of Debt Maturities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Jun. 20, 2016
Summary of Debt Maturities [Abstract]
2,017	$ 684,624
2,018	589,566
2,019	4,002,251
2,020	710,920
2,021	2,957,403
Thereafter	$ 14,351,818
Cablevision Systems Corporation And Subsidiaries
Summary of Debt Maturities [Abstract]
2,017		$ 1,719,180
2,018		2,103,441
2,019		557,348
2,020		526,340
2,021		1,200,256
Thereafter		$ 9,884,024

CVC - DERIVATIVE CONTRACTS AN_3

CVC - DERIVATIVE CONTRACTS AND COLLATERALIZED INDEBTEDNESS - Location of Assets and Liabilities Within the Consolidated Balance Sheets (Details) - Not Designated as Hedging Instruments - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2015
Derivative Instruments, Fair Value [Abstract]
Asset Derivatives	$ 111,319	$ 52,545
Liability Derivatives	(132,978)	(239,951)
Prepaid forward contracts | Current derivative contracts
Derivative Instruments, Fair Value [Abstract]
Asset Derivatives	0	52,545
Prepaid forward contracts | Long-term derivative contracts
Derivative Instruments, Fair Value [Abstract]
Asset Derivatives	$ 109,344	$ 0
Cablevision Systems Corporation And Subsidiaries
Derivative Instruments, Fair Value [Abstract]
Asset Derivatives			$ 82,408
Liability Derivatives			2,706
Cablevision Systems Corporation And Subsidiaries | Prepaid forward contracts | Current derivative contracts
Derivative Instruments, Fair Value [Abstract]
Asset Derivatives			10,333
Liability Derivatives			2,706
Cablevision Systems Corporation And Subsidiaries | Prepaid forward contracts | Long-term derivative contracts
Derivative Instruments, Fair Value [Abstract]
Asset Derivatives			72,075
Liability Derivatives			$ 0

CVC - DERIVATIVE CONTRACTS AN_4

CVC - DERIVATIVE CONTRACTS AND COLLATERALIZED INDEBTEDNESS - Settlements of Collateralized Indebtedness (Details) $ in Thousands	1 Months Ended	6 Months Ended	12 Months Ended
	Feb. 28, 2017	Jun. 20, 2016USD ($)shares	Dec. 31, 2018USD ($)shares	Dec. 31, 2017USD ($)shares	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)shares
Derivative [Line Items]
Number of shares (in shares) | shares			16,139,868	26,815,368
Collateralized indebtedness settled			$ (516,537)	$ (774,703)
Derivative contracts settled			24	(56,356)
Derivatives contracts settled			516,513	831,059	$ 143,102
Proceeds from new monetization contracts			516,513	838,794	$ 179,388
Net cash proceeds			$ 0	$ 7,735
Comcast
Derivative [Line Items]
Stock spit, conversion ratio	2
Cablevision Systems Corporation And Subsidiaries
Derivative [Line Items]
Number of shares (in shares) | shares		10,802,118				26,815,368
Collateralized indebtedness settled		$ (273,519)				$ (569,562)
Derivative contracts settled		(8,075)				(69,675)
Derivatives contracts settled		281,594				639,237
Proceeds from new monetization contracts		337,149				774,703
Net cash proceeds		$ 55,555				$ 135,466

CVC - DERIVATIVE CONTRACTS AN_5

CVC - DERIVATIVE CONTRACTS AND COLLATERALIZED INDEBTEDNESS - Narrative (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 20, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Derivative [Line Items]
Gain on investments, net		$ (261,834)	$ 237,354	$ 141,896
Prepaid forward contracts
Derivative [Line Items]
Unrealized and realized gains (losses) of derivative contracts		$ 218,848	$ (138,920)	$ (53,696)
Cablevision Systems Corporation And Subsidiaries
Derivative [Line Items]
Gain on investments, net	$ 129,990				$ (30,208)
Cablevision Systems Corporation And Subsidiaries | Prepaid forward contracts
Derivative [Line Items]
Unrealized and realized gains (losses) of derivative contracts	(36,283)				104,927
Investment Pledged as Collateral | Cablevision Systems Corporation And Subsidiaries
Derivative [Line Items]
Gain on investments, net	$ 129,510				$ (33,935)

CVC - FAIR VALUE MEASUREMENT -

CVC - FAIR VALUE MEASUREMENT - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - Fair Value Measured on a Recurring Basis - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2015
Level I
Assets:
Investment securities	$ 1,462,626	$ 1,720,357
Prepaid forward contracts | Level II
Assets:
Derivative asset	109,344	52,545
Liabilities:
Derivative liability	0	162,049
Money market funds | Level I
Assets:
Money market funds	$ 91,852	$ 5,949
Cablevision Systems Corporation And Subsidiaries
Assets:
Investment securities			$ 130
Investment securities pledged as collateral			1,211,982
Cablevision Systems Corporation And Subsidiaries | Level I
Assets:
Investment securities			130
Investment securities pledged as collateral			1,211,982
Cablevision Systems Corporation And Subsidiaries | Prepaid forward contracts
Assets:
Derivative asset			82,408
Liabilities:
Derivative liability			2,706
Cablevision Systems Corporation And Subsidiaries | Prepaid forward contracts | Level II
Assets:
Derivative asset			82,408
Liabilities:
Derivative liability			2,706
Cablevision Systems Corporation And Subsidiaries | Money market funds
Assets:
Money market funds			922,765
Cablevision Systems Corporation And Subsidiaries | Money market funds | Level I
Assets:
Money market funds			$ 922,765

CVC - FAIR VALUE MEASUREMENT _2

CVC - FAIR VALUE MEASUREMENT - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2015
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	$ 22,787,410	$ 21,919,331
Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value	$ 23,235,572	$ 23,279,472
Cablevision Systems Corporation And Subsidiaries | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value			$ 9,521,333
Cablevision Systems Corporation And Subsidiaries | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value			9,473,141
Cablevision Systems Corporation And Subsidiaries | Credit facility debt | Carrying Amount | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value			2,514,454
Cablevision Systems Corporation And Subsidiaries | Credit facility debt | Estimated Fair Value | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value			2,525,654
Cablevision Systems Corporation And Subsidiaries | Term Loan | Carrying Amount | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value			1,191,324
Cablevision Systems Corporation And Subsidiaries | Term Loan | Estimated Fair Value | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value			1,176,396
Cablevision Systems Corporation And Subsidiaries | Senior notes and debentures | Carrying Amount | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value			5,801,011
Cablevision Systems Corporation And Subsidiaries | Senior notes and debentures | Estimated Fair Value | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value			5,756,608
Cablevision Systems Corporation And Subsidiaries | Notes payable | Carrying Amount | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value			14,544
Cablevision Systems Corporation And Subsidiaries | Notes payable | Estimated Fair Value | Level II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt, fair value			$ 14,483

CVC - INCOME TAXES - Income tax

CVC - INCOME TAXES - Income tax benefit (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 20, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current expense (benefit):
Federal		$ (1,865)	$ 5,261	$ (981)
State		32,347	12,530	5,310
Total current expense (benefit)		30,482	17,791	4,329
Deferred benefit:
Federal		26,141	(2,095,930)	(223,159)
State		(93,744)	(784,224)	(40,830)
Total deferred benefit		(67,603)	(2,880,154)	(263,989)
Tax benefit relating to uncertain tax positions		(1,534)	11	(6)
Income tax benefit		$ (38,655)	$ (2,862,352)	$ (259,666)
Income tax benefit attributable to discontinued operations					$ 8,731
Current income tax benefit, discontinued operations					111
Deferred income tax benefit, noncurrent					8,620
Cablevision Systems Corporation And Subsidiaries
Current expense (benefit):
Federal	$ 6,473				4,844
State	1,917				15,869
Total current expense (benefit)	8,390				20,713
Deferred benefit:
Federal	93,253				97,927
State	22,897				35,469
Total deferred benefit	116,150				133,396
Tax benefit relating to uncertain tax positions	308				763
Income tax benefit	$ 124,848				$ 154,872

CVC - INCOME TAXES - Rate recon

CVC - INCOME TAXES - Rate reconciliation (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 20, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Taxes [Line Items]
Federal tax benefit at statutory rate		$ (3,793)	$ (478,656)	$ (381,901)
State income taxes, net of federal impact		(8,103)	(61,698)	(39,336)
Changes in the valuation allowance		15,987	(111)	297
Other non-deductible expenses		2,200	3,405	1,551
Other, net		(194)	433	(2,882)
Income tax benefit		$ (38,655)	$ (2,862,352)	$ (259,666)
Cablevision Systems Corporation And Subsidiaries
Income Taxes [Line Items]
Federal tax benefit at statutory rate	$ 100,926				$ 119,931
State income taxes, net of federal impact	14,825				18,874
Changes in the valuation allowance	86				(902)
Changes in the state rates used to measure deferred taxes, net of federal benefit	0				(1,006)
Tax expense (benefit) relating to uncertain tax positions	178				574
New York tax reform	0				16,334
Non-deductible officers' compensation	462				846
Non-deductible merger transaction costs	9,392				0
Other non-deductible expenses	1,337				3,099
Research credit	(850)				(2,630)
Adjustment to prior year tax expense	0				(515)
Other, net	(1,508)				267
Income tax benefit	$ 124,848				$ 154,872

CVC - INCOME TAXES - Deferred t

CVC - INCOME TAXES - Deferred taxes (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 20, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income tax
Deferred income tax charge		$ (67,603)	$ (2,880,154)	$ (263,989)
Deferred Tax Asset (Liability), Current [Abstract]
Compensation and benefit plans		42,484	49,698
Other liabilities		38,473	40,149
Prepaid expenses		(7,543)	(8,105)
Deferred Tax Asset (Liability), Noncurrent [Abstract]
Other		11,531	8,849
Fixed assets and intangibles		(5,496,103)	(5,729,274)
Net deferred tax liability, noncurrent		(4,723,937)	(4,769,286)
Total net deferred tax liability		(4,723,937)	(4,769,286)
Excess tax benefit on share-based awards		$ 0	$ 0	$ 31
Cablevision Systems Corporation And Subsidiaries
Income tax
Deferred income tax charge	$ 116,150				$ 133,396
Deferred Tax Asset (Liability), Current [Abstract]
NOLs and tax credit carry forwards					76,007
Compensation and benefit plans					80,831
Allowance for doubtful accounts					2,196
Merger-related costs					7,332
Inventory valuation adjustment					7,135
Other liabilities					26,216
Deferred tax asset					199,717
Valuation allowance					(2,098)
Net deferred tax asset, current					197,619
Investments					(163,396)
Prepaid expenses					(19,627)
Deferred tax liability, current					(183,023)
Net deferred tax asset, current					14,596
Deferred Tax Asset (Liability), Noncurrent [Abstract]
NOLs and tax credit carry forwards					36,866
Compensation and benefit plans					97,005
Partnership investments					123,529
Investments					9,798
Other					9,201
Deferred tax asset					276,399
Valuation allowance					(2,816)
Net deferred tax asset, noncurrent					273,583
Fixed assets and intangibles					(978,418)
Deferred tax liability, noncurrent					(978,418)
Net deferred tax liability, noncurrent					(704,835)
Total net deferred tax liability					(690,239)
Excess tax benefit on share-based awards	$ 82				$ 5,694

CVC - INCOME TAXES - Uncertain

CVC - INCOME TAXES - Uncertain tax positions (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 20, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2015
reconciliation of the beginning and ending amount of unrecognized tax benefits associated with uncertain tax positions
Beginning balance		$ 4,036	$ 4,025
Increases related to prior year tax positions			11
Ending balance		2,580	$ 4,036
Uncertain tax positions
Interest expense relating to uncertain tax position		$ 2,123
Cablevision Systems Corporation And Subsidiaries
reconciliation of the beginning and ending amount of unrecognized tax benefits associated with uncertain tax positions
Beginning balance	$ 4,022
Increases related to prior year tax positions	3
Increases related to current year tax positions	6
Ending balance	4,031			$ 4,022
Uncertain tax positions
Interest expense relating to uncertain tax position	$ 209			$ 314

CVC - BENEFIT PLANS - Defined B

CVC - BENEFIT PLANS - Defined Benefit Plans (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 20, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Change in projected benefit obligation:
Benefit obligation, beginning of year		$ 299,066	$ 382,517
Interest cost		9,248	11,786	$ 6,946
Actuarial (gain) loss		(9,894)	13,171
Benefits paid		(36,278)	(121,650)
Benefit obligation, end of year		264,515	299,066	382,517
Change in plan assets:
Fair value of plan assets, beginning of year		195,768	284,118
Actual return on plan assets, net		(5,705)	6,356
Employer contributions		13,725	26,944
Benefits paid		(36,278)	(121,650)
Fair value of plan assets, end of year		167,510	195,768	284,118
Unfunded status at end of year		(97,005)	(103,298)
Accumulated benefit obligation		264,515	299,066
Net funded status relating to defined benefit plans [Abstract]
Defined Benefit Plans		(97,005)	(103,298)
Less: Current portion related to nonqualified plans		211	135
Long-term defined benefit plan obligations		(96,794)	(103,163)
Components of net periodic benefit cost [Abstract]
Interest cost		9,248	11,786	6,946
Expected return on plan assets, net		(987)	(4,905)	(3,880)
Curtailment loss		0	3,137	231
Settlement loss (reclassified from accumulated other comprehensive loss)		$ 1,268	$ 1,845	(154)
Cablevision Systems Corporation And Subsidiaries
Net funded status relating to defined benefit plans [Abstract]
Long-term defined benefit plan obligations					$ (99,228)
Cablevision Systems Corporation And Subsidiaries | Cablevision Defined Benefit Plans
Change in projected benefit obligation:
Benefit obligation, beginning of year	$ 403,963			403,963	430,846
Service cost	0				344
Interest cost	7,130				15,523
Actuarial (gain) loss					14,912
Benefits paid					(27,838)
Benefit obligation, end of year					403,963
Change in plan assets:
Fair value of plan assets, beginning of year	297,846			$ 297,846	303,676
Actual return on plan assets, net					(3,921)
Employer contributions					25,929
Benefits paid					(27,838)
Fair value of plan assets, end of year					297,846
Unfunded status at end of year					(106,117)
Accumulated benefit obligation					403,963
Net funded status relating to defined benefit plans [Abstract]
Defined Benefit Plans					(106,117)
Long-term defined benefit plan obligations					(99,228)
Components of net periodic benefit cost [Abstract]
Service cost	0				344
Interest cost	7,130				15,523
Expected return on plan assets, net	(3,565)				(8,297)
Curtailment loss	(1,446)				1,294
Settlement loss (reclassified from accumulated other comprehensive loss)	1,655				3,822
Net periodic benefit cost	$ 3,774				12,686
Cablevision Systems Corporation And Subsidiaries | Excess Cash Balance Plan and CSC Supplemental Benefit Plan [Member]
Net funded status relating to defined benefit plans [Abstract]
Less: Current portion related to nonqualified plans					$ 6,889

CVC - BENEFIT PLANS - Plan Assu

CVC - BENEFIT PLANS - Plan Assumptions for Defined Benefit Plans (Details)	6 Months Ended		12 Months Ended
	Dec. 31, 2016	Jun. 20, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2015
Net Periodic Benefit Cost
Discount rate	3.53%		3.87%	3.69%
Rate of increase in future compensation levels	0.00%		0.00%	0.00%
Expected rate of return on plan assets (Pension Plan only)	3.97%		3.67%	3.90%
Weighted-average assumptions used to determine benefit obligations [Abstract]
Discount rate			4.20%	3.50%
Cablevision Systems Corporation And Subsidiaries | Cablevision Defined Benefit Plans
Net Periodic Benefit Cost
Discount rate		3.76%			3.83%
Rate of increase in future compensation levels		0.00%			0.00%
Weighted-average assumptions used to determine benefit obligations [Abstract]
Discount rate					3.94%
Cablevision Systems Corporation And Subsidiaries | Pension Plan
Net Periodic Benefit Cost
Expected rate of return on plan assets (Pension Plan only)		3.97%			4.03%

CVC - BENEFIT PLANS - Asset All

CVC - BENEFIT PLANS - Asset Allocation and Fair Values of Pension Plan Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan, Information about Plan Assets [Abstract]
Weighted average asset allocation (in hundredths)	100.00%	100.00%
Fair value of plan assets	$ 167,510	$ 195,768	$ 284,118
Fixed income securities
Defined Benefit Plan, Information about Plan Assets [Abstract]
Weighted average asset allocation (in hundredths)	65.00%	66.00%
Foreign issued corporate debt
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets	$ 14,002	$ 10,721
Foreign issued corporate debt | Level I
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets	0	0
Foreign issued corporate debt | Level II
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets	14,002	10,721
U.S. corporate debt
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets	43,190	39,992
U.S. corporate debt | Level I
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets	0	0
U.S. corporate debt | Level II
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets	43,190	39,992
Government debt
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets	3,988	4,645
Government debt | Level I
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets	0	0
Government debt | Level II
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets	3,988	4,645
U.S. Treasury securities
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets	38,657	62,601
U.S. Treasury securities | Level I
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets	0	0
U.S. Treasury securities | Level II
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets	38,657	62,601
Asset-backed securities
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets	8,907	10,978
Asset-backed securities | Level I
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets	0	0
Asset-backed securities | Level II
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets	$ 8,907	$ 10,978
Cablevision Systems Corporation And Subsidiaries | Pension Plan
Defined Benefit Plan, Information about Plan Assets [Abstract]
Weighted average asset allocation (in hundredths)				100.00%
Fair value of plan assets				$ 302,147
Cablevision Systems Corporation And Subsidiaries | Pension Plan | Level I
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets				118,067
Cablevision Systems Corporation And Subsidiaries | Pension Plan | Level II
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets				$ 184,080
Cablevision Systems Corporation And Subsidiaries | Pension Plan | Mutual funds
Defined Benefit Plan, Information about Plan Assets [Abstract]
Weighted average asset allocation (in hundredths)				39.00%
Fair value of plan assets				$ 117,174
Cablevision Systems Corporation And Subsidiaries | Pension Plan | Mutual funds | Level I
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets				$ 117,174
Cablevision Systems Corporation And Subsidiaries | Pension Plan | Fixed income securities
Defined Benefit Plan, Information about Plan Assets [Abstract]
Weighted average asset allocation (in hundredths)				61.00%
Cablevision Systems Corporation And Subsidiaries | Pension Plan | Foreign issued corporate debt
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets				$ 12,825
Cablevision Systems Corporation And Subsidiaries | Pension Plan | Foreign issued corporate debt | Level II
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets				12,825
Cablevision Systems Corporation And Subsidiaries | Pension Plan | U.S. corporate debt
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets				54,005
Cablevision Systems Corporation And Subsidiaries | Pension Plan | U.S. corporate debt | Level II
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets				54,005
Cablevision Systems Corporation And Subsidiaries | Pension Plan | Government debt
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets				8,273
Cablevision Systems Corporation And Subsidiaries | Pension Plan | Government debt | Level II
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets				8,273
Cablevision Systems Corporation And Subsidiaries | Pension Plan | U.S. Treasury securities
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets				90,414
Cablevision Systems Corporation And Subsidiaries | Pension Plan | U.S. Treasury securities | Level II
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets				90,414
Cablevision Systems Corporation And Subsidiaries | Pension Plan | Asset-backed securities
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets				18,563
Cablevision Systems Corporation And Subsidiaries | Pension Plan | Asset-backed securities | Level II
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets				$ 18,563
Cablevision Systems Corporation And Subsidiaries | Pension Plan | Cash Equivalents
Defined Benefit Plan, Information about Plan Assets [Abstract]
Weighted average asset allocation (in hundredths)				0.00%
Fair value of plan assets				$ 893
Cablevision Systems Corporation And Subsidiaries | Pension Plan | Cash Equivalents | Level I
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair value of plan assets				$ 893

CVC - BENEFIT PLANS - Benefit P

CVC - BENEFIT PLANS - Benefit Payments and Defined Contribution Benefit Plans (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 20, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Contribution Plan [Abstract]
Cost associated with defined contribution benefit plans		$ 28,232	$ 27,577	$ 28,501
Cablevision Systems Corporation And Subsidiaries
Defined Contribution Plan [Abstract]
Cost associated with defined contribution benefit plans	$ 26,964				$ 61,343

CVC - EQUITY AND LONG-TERM IN_3

CVC - EQUITY AND LONG-TERM INCENTIVE PLANS, Cablevision's Equity Plans (Details) - USD ($) $ / shares in Units, $ in Thousands	Jun. 21, 2016	Mar. 31, 2016	Jun. 20, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cablevision's Equity Plans [Abstract]
Share-based compensation related to equity classified awards				$ 59,812	$ 57,430	$ 14,368
Stock options
Cablevision's Equity Plans [Abstract]
Share-based compensation			$ 3,848				$ 9,159
Cablevision Systems Corporation And Subsidiaries
Cablevision's Equity Plans [Abstract]
Consideration transfered	$ 9,958,323
Share-based compensation			25,231				65,286
Share-based compensation related to equity classified awards			24,778				60,321
Income tax benefit recognized in continuing operations resulting from share-based compensation expense			10,357				26,718
Proceeds from stock option exercises			$ 14,411				$ 18,727
Cablevision Systems Corporation And Subsidiaries | Stock options
Cablevision's Equity Plans [Abstract]
Awards authorized (in shares)							11,880,700
Cablevision Systems Corporation And Subsidiaries | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested (in shares)			(2,239,167)				(1,598,363)
Cablevision's Equity Plans [Abstract]
Awards authorized (in shares)							3,769,485
Granted (in shares)							1,747,870
Number of restricted stock units granted to non-employee directors (in shares)							466,283
Share-based compensation			$ 20,930				$ 51,162
Cablevision Systems Corporation And Subsidiaries | Stock Appreciation Rights
Cablevision's Equity Plans [Abstract]
Share-based compensation			$ 453				$ 4,965
Cablevision Systems Corporation And Subsidiaries | Performance Based Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested (in shares)			(753,296)				(739,600)
Cablevision's Equity Plans [Abstract]
Granted (in shares)							584,400
Cablevision Systems Corporation And Subsidiaries | Cablevision Systems Corporation 2015 Employee Stock Plan | CNYG Class A Common Stock
Cablevision's Equity Plans [Abstract]
Granted (in shares)							79,780
Cablevision Systems Corporation And Subsidiaries | Cablevision Systems Corporation Stock Plan for Non-Employee Directors | Restricted Stock
Cablevision's Equity Plans [Abstract]
Number of restricted stock units granted to non-employee directors (in shares)							73,056
Non-option equity instruments, outstanding (shares)							466,283
Cablevision Systems Corporation And Subsidiaries | Cablevision Systems Corporation Employee Stock Plan
Cablevision's Equity Plans [Abstract]
Number of restricted shares surrendered by employees (in shares)		1,248,875					1,004,950
Aggregate value of restricted shares surrendered by employees		$ 41,469					$ 19,141
Cablevision Systems Corporation And Subsidiaries | Cablevision Systems Corporation Employee Stock Plan | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested (in shares)		(2,992,463)					(2,337,963)
Employee | Cablevision Systems Corporation And Subsidiaries | Restricted Stock
Cablevision's Equity Plans [Abstract]
Granted (in shares)							1,724,940
Cablevision Systems Corp.
Cablevision's Equity Plans [Abstract]
Business acquisition, share price (dollars per share)	$ 34.90
Consideration transfered	$ 9,958,323
Cablevision Systems Corp. | Cablevision Systems Corporation And Subsidiaries
Cablevision's Equity Plans [Abstract]
Business acquisition, share price (dollars per share)							$ 34.90
Consideration transfered							$ 439,167
Cablevision Systems Corp. | Cablevision Systems Corporation And Subsidiaries | Cablevision Systems Corporation Employee Stock Plan
Cablevision's Equity Plans [Abstract]
Share-based compensation related to equity classified awards							63,484
Cablevision Systems Corp. | Employee | Cablevision Systems Corporation And Subsidiaries
Cablevision's Equity Plans [Abstract]
Employers payroll taxes							$ 7,929

CVC - EQUITY AND LONG-TERM IN_4

CVC - EQUITY AND LONG-TERM INCENTIVE PLANS, Valuation Assumptions (Details) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2015
Assumptions Used to Calculate the Fair Value of Stock Option Awards Granted [Abstract]
Risk-free rate (in percentage)	2.74%	2.30%
Expected life (in years)	6 years 5 months 25 days	6 years 5 months 9 days
Dividend yield (in hundredths)	0.00%	0.00%
Grant date fair value	$ 6.91	$ 8.77
Cablevision Systems Corporation And Subsidiaries | Stock options
Assumptions Used to Calculate the Fair Value of Stock Option Awards Granted [Abstract]
Risk-free rate (in percentage)			1.82%
Expected life (in years)			8 years
Dividend yield (in hundredths)			3.63%
Volatility (in hundredths)			39.98%
Grant date fair value			$ 5.45

CVC - EQUITY AND LONG-TERM IN_5

CVC - EQUITY AND LONG-TERM INCENTIVE PLANS, Stock Option Award Activity (Details) - Cablevision Systems Corporation And Subsidiaries - USD ($)	6 Months Ended	12 Months Ended
	Jun. 20, 2016	Dec. 31, 2015	Dec. 31, 2014
Weighted Average Exercise Price Per Share
Beginning balance (in dollars per share)	$ 15.28	$ 14.41
Granted, weighted average exercise price per share (in dollars per share)		19.17
Exercised, weighted average exercise price per share (in dollars per share)		12.84
Ending balance (in dollars per share)		$ 15.28	$ 14.41
Options exercisable at end of period, weighted average exercise price per share (in dollars per share)	13.97
Options expected to vest in the future, weighted average exercise price per share (in dollars per share)	$ 15.45
Stock Options Outstanding, Additional Disclosures [Abstract]
Weighted average remaining contractual term (in years)		6 years 9 months 18 days	7 years 2 months 1 day
Balance at beginning of period, aggregate intrinsic value	$ 221,900	$ 79,347
Balance at end of period, aggregate intrinsic value		$ 221,900	$ 79,347
Time Vesting Options
Shares Under Option
Beginning balance (in shares)	6,744,000	5,097,666
Granted (in shares)		2,000,000
Exercised (in shares)	(744,000)	(353,666)
Ending balance (in shares)	6,000,000	6,744,000	5,097,666
Performance Based Vesting Options
Shares Under Option
Beginning balance (in shares)	6,609,217	7,633,500
Exercised (in shares)	(728,517)	(1,024,283)
Ending balance (in shares)	5,880,700	6,609,217	7,633,500

CVC - EQUITY AND LONG-TERM IN_6

CVC - EQUITY AND LONG-TERM INCENTIVE PLANS, Restricted Stock Award Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Mar. 31, 2016	Jun. 20, 2016	Dec. 31, 2015
Performance Shares
Restricted Shares, Additional Disclosures [Abstract]
Share-based compensation arrangement by share-based payment award, purchase price of common stock (percent)			150.00%
Cablevision Systems Corporation And Subsidiaries
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Balance at beginning of period, weighted average grant date fair value (in dollars per share)	$ 17.53	$ 17.53	$ 15.46
Granted weighted average grant date fair value (in dollars per share)			19.43
Vested weighted average grant date fair value (in dollars per share)		15.35	14.48
Awards forfeited, weighted average fair value per share at date of grant (in dollars per share)		$ 18.38	17.28
Balance at end of period, weighted average grant date fair value (in dollars per share)			$ 17.53
Cablevision Systems Corporation And Subsidiaries | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Beginning balance (in shares)	4,967,748	4,967,748	5,314,870
Granted (in shares)			1,747,870
Vested (in shares)		(2,239,167)	(1,598,363)
Forfeited (in shares)		(85,900)	(496,629)
Ending balance (in shares)		2,642,681	4,967,748
Cablevision Systems Corporation And Subsidiaries | Performance Based Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Beginning balance (in shares)	1,880,100	1,880,100	2,035,300
Granted (in shares)			584,400
Vested (in shares)		(753,296)	(739,600)
Ending balance (in shares)		1,126,804	1,880,100
Cablevision Systems Corporation And Subsidiaries | Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Beginning balance (in shares)	1,772,430	1,772,430
Granted (in shares)			1,851,700
Forfeited (in shares)		(47,490)	(79,270)
Ending balance (in shares)		1,724,940	1,772,430
Cablevision Systems Corporation And Subsidiaries | Cablevision Systems Corporation Employee Stock Plan
Restricted Shares, Additional Disclosures [Abstract]
Number of restricted shares surrendered by employees (in shares)	1,248,875		1,004,950
Aggregate value of restricted shares surrendered by employees	$ 41,469		$ 19,141
Cablevision Systems Corporation And Subsidiaries | Cablevision Systems Corporation Employee Stock Plan | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Vested (in shares)	(2,992,463)		(2,337,963)

CVC - EQUITY AND LONG-TERM IN_7

CVC - EQUITY AND LONG-TERM INCENTIVE PLANS, Long-term Incentive Plans (Details) - USD ($) $ in Thousands	Jun. 21, 2016	Jun. 20, 2016	Dec. 31, 2015	Dec. 31, 2016
Carry Unit Awards
Long-Term Incentive Plans [Abstract]
Awards authorized (in shares)				259,442,785
Carry Unit Awards | Tranche One
Long-Term Incentive Plans [Abstract]
Award vesting percentage	50.00%
Carry Unit Awards | Tranche Two
Long-Term Incentive Plans [Abstract]
Award vesting percentage	25.00%
Carry Unit Awards | Tranche Three
Long-Term Incentive Plans [Abstract]
Award vesting percentage	25.00%
Cablevision Systems Corporation Cash Incentive Plan | Employee | Carry Unit Awards
Long-Term Incentive Plans [Abstract]
Granted (in shares)	102,500,000
Cablevision Systems Corporation Cash Incentive Plan | Employee | Carry Unit Awards | Affiliates
Long-Term Incentive Plans [Abstract]
Granted (in shares)	100,300,000
Cablevision Systems Corporation And Subsidiaries
Long-Term Incentive Plans [Abstract]
Award vesting percentage		100.00%
Cablevision Systems Corporation And Subsidiaries | Cablevision Systems Corporation Cash Incentive Plan
Long-Term Incentive Plans [Abstract]
Long-term incentive awards compensation expense		$ 9,169	$ 27,170

CVC - AFFILIATE AND RELATED P_3

CVC - AFFILIATE AND RELATED PARTY TRANSACTIONS - Narrative (Details) - USD ($) $ in Thousands	Apr. 30, 2018	Dec. 31, 2017	Dec. 31, 2016	Jul. 31, 2016	Jul. 06, 2016	Dec. 31, 2015	Sep. 30, 2015
I24News and Altice NV 24/7
Related Party Transaction [Line Items]
Ownership percentage	24.00%
Investment in affiliates and related parties		$ 930
Newsday
Related Party Transaction [Line Items]
Ownership percentage					25.00%
Investment in affiliates and related parties		$ 3,579
Cablevision Systems Corporation And Subsidiaries
Related Party Transaction [Line Items]
Investment in affiliates and related parties						$ 0
Cablevision Systems Corporation And Subsidiaries | I24News and Altice NV 24/7
Related Party Transaction [Line Items]
Ownership percentage			25.00%
Investment in affiliates and related parties			$ 1,966
Cablevision Systems Corporation And Subsidiaries | Newsday
Related Party Transaction [Line Items]
Ownership percentage of noncontrolling interest				75.00%	75.00%
Ownership percentage				25.00%	25.00%
Investment in affiliates and related parties							$ 8,300
Cablevision Systems Corporation And Subsidiaries | Other Related Party
Related Party Transaction [Line Items]
Ownership percentage			75.00%

CVC - AFFILIATE AND RELATED P_4

CVC - AFFILIATE AND RELATED PARTY TRANSACTIONS - Revenue and Related Charges (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 20, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Related Party Transaction [Line Items]
Revenue		$ 2,575	$ 1,100	$ 1,086
Operating expenses:
Programming and other direct costs, net of credits		7,261	4,176	1,947
Other operating expenses from affiliates		16,307	33,140	18,854
Operating expenses, net		23,568	37,316	20,801
Net charges		$ 21,444	$ 640,344	$ 132,427
Cablevision Systems Corporation And Subsidiaries
Related Party Transaction [Line Items]
Revenue	$ 2,088				$ 5,343
Operating expenses:
Programming and other direct costs, net of credits	84,636				176,909
Other operating expenses from affiliates	2,182				5,372
Operating expenses, net	86,818				182,281
Net charges	$ 84,730				$ 176,938

CVC - AFFILIATE AND RELATED P_5

CVC - AFFILIATE AND RELATED PARTY TRANSACTIONS - Amounts Due From and Due to Related Parties (Details) - Affiliates - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2015
Related Party Transaction [Line Items]
Amounts due from affiliates	$ 17,557	$ 19,764
Amounts due to affiliates	$ 26,096	$ 10,998
Cablevision Systems Corporation And Subsidiaries
Related Party Transaction [Line Items]
Amounts due from affiliates			$ 767
Amounts due to affiliates			$ 29,729

CVC - COMMITMENTS AND CONTING_2

CVC - COMMITMENTS AND CONTINGENCIES - Legal Matters (Details) - Cablevision Systems Corporation And Subsidiaries $ in Thousands	Sep. 12, 2016USD ($)	Feb. 08, 2016USD ($)	Jun. 20, 2016item	Dec. 31, 2015USD ($)
Marchese, et al. v. Cablevision Systems Corporation and CSC Holdings, LLC
Legal Matters
Number of versions of complaint dismissed without prejudice by the District Court | item			3
Litigation settlement amount	$ 15,600
Compensation Related Claims | Discontinued Operations, Disposed of by Sale
Legal Matters
Litigation settlement amount		$ 21,000
Legal expenses				$ 21,000

CVC - INTERIM FINANCIAL INFOR_3

CVC - INTERIM FINANCIAL INFORMATION (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended														6 Months Ended	12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Jun. 20, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Jun. 20, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Selected Quarterly Financial Information
Total revenue	$ 2,454,940	$ 2,417,801	$ 2,364,153	$ 2,329,714	$ 2,359,808	$ 2,322,521	$ 2,322,362	$ 2,302,259								$ 9,566,608	$ 9,306,950	$ 6,017,212
Operating income	528,724	505,558	335,059	313,038	217,055	120,575	253,268	250,110								1,682,379	841,008	462,809
Net income (loss)	213,808	33,739	(98,004)	(128,949)	2,243,325	(192,434)	(479,939)	(76,188)								20,594	1,494,764	(831,479)
Net loss (income) attributable to noncontrolling interests	(722)	(1,186)	149	(2)	(850)	(135)	(365)	(237)								(1,761)	(1,587)	(551)
Net income (loss) attributable to Altice USA, Inc. stockholders	$ 213,086	$ 32,553	$ (97,855)	$ (128,951)	$ 2,242,475	$ (192,569)	$ (480,304)	$ (76,425)								$ 18,833	$ 1,493,177	$ (832,030)
Cablevision Systems Corporation And Subsidiaries
Selected Quarterly Financial Information
Total revenue															$ 3,137,604				$ 6,545,545
Operating income															475,306				848,471
Income from continuing operations, net of income taxes															163,512				187,789
Income (loss) from discontinued operations, net of income taxes															0				(12,541)
Net income (loss)															163,512				175,248
Net loss (income) attributable to noncontrolling interests															236				201
Net income (loss) attributable to Altice USA, Inc. stockholders															$ 163,748				$ 175,449
Basic income per share attributable to Cablevision Systems Corporation stockholders:
Income from continuing operations, net of income taxes															$ 0.60				$ 0.70
Loss from discontinued operations, net of income taxes															0				(0.05)
Net income (in dollars per share)															0.60				0.65
Diluted income per share attributable to Cablevision Systems Corporation stockholders:
Income from continuing operations, net of income taxes															0.58				0.68
Loss from discontinued operations, net of income taxes															0				(0.05)
Net income (in dollars per share)															$ 0.58				$ 0.63
Amounts attributable to Cablevision Systems Corporation stockholder(s):
Loss from discontinued operations, net of income taxes															$ 0				$ (12,541)
Predecessor | Cablevision Systems Corporation And Subsidiaries
Selected Quarterly Financial Information
Total revenue									$ 1,491,714	$ 1,645,890	$ 1,636,425	$ 1,624,828	$ 1,661,940	$ 1,622,352					6,545,545
Operating expenses									(1,267,663)	(1,394,635)	(1,439,285)	(1,441,712)	(1,417,476)	(1,398,601)					(5,697,074)
Operating income									224,051	251,255	197,140	183,116	244,464	223,751					848,471
Income from continuing operations, net of income taxes											33,781	23,431	75,676	54,901					187,789
Income (loss) from discontinued operations, net of income taxes											(1,633)	(406)		(10,502)					(12,541)
Net income (loss)									69,201	94,311	32,148	23,025	75,676	44,399					175,248
Net loss (income) attributable to noncontrolling interests									170	66	(30)	78	(81)	234					201
Net income (loss) attributable to Altice USA, Inc. stockholders									$ 69,371	$ 94,377	$ 32,118	$ 23,103	$ 75,595	$ 44,633					$ 175,449
Basic income per share attributable to Cablevision Systems Corporation stockholders:
Income from continuing operations, net of income taxes									$ 0.25	$ 0.35	$ 0.12	$ 0.09	$ 0.28	$ 0.21					$ 0.70
Loss from discontinued operations, net of income taxes											(0.01)			(0.04)					(0.05)
Net income (in dollars per share)									0.25	0.35	0.12	0.09	0.28	0.17					0.65
Diluted income per share attributable to Cablevision Systems Corporation stockholders:
Income from continuing operations, net of income taxes									0.25	0.34	0.12	0.08	0.27	0.20					0.68
Loss from discontinued operations, net of income taxes											(0.01)			(0.04)					(0.05)
Net income (in dollars per share)									$ 0.25	$ 0.34	$ 0.12	$ 0.08	$ 0.27	$ 0.16					$ 0.63
Amounts attributable to Cablevision Systems Corporation stockholder(s):
Income from continuing operations, net of income taxes									$ 69,371	$ 94,377	$ 33,751	$ 23,509	$ 75,595	$ 55,135					$ 187,990
Loss from discontinued operations, net of income taxes											(1,633)	(406)		(10,502)					(12,541)
Net income									$ 69,371	$ 94,377	$ 32,118	$ 23,103	$ 75,595	$ 44,633					$ 175,449

CVC - BUSINESS COMBINATION - Na

CVC - BUSINESS COMBINATION - Narrative (Details) $ in Thousands	Jun. 21, 2016USD ($)
Cablevision Systems Corporation And Subsidiaries
Business Acquisition [Line Items]
Consideration transfered	$ 9,958,323

CVC - BUSINESS COMBINATION - As

CVC - BUSINESS COMBINATION - Assets and Liabilities Acquired (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2015	Dec. 31, 2017	Dec. 31, 2016	Jun. 20, 2016
Business Acquisition [Line Items]
Goodwill	$ 8,012,416	$ 2,040,402	$ 8,019,861	$ 7,992,700
Estimated amortization expense
Year Ending December 31, 2017	778,922
Amortization expense, 2018	697,316
Amortization expense, 2019	617,794
Amortization expense, 2020	532,998
Year Ending December 31, 2021	$ 371,198
Minimum | Customer relationships
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life	8 years
Minimum | Trade names
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life	2 years
Minimum | Amortizable intangible assets
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life	1 year
Maximum | Customer relationships
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life	18 years
Maximum | Trade names
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life	5 years
Maximum | Amortizable intangible assets
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life	15 years
Cablevision Systems Corporation And Subsidiaries
Business Acquisition [Line Items]
Current assets				1,923,071
Accounts receivable				271,305
Property, plant and equipment				4,864,621
Goodwill		262,345		5,838,959	$ 262,345
Indefinite-lived cable television franchises				8,113,575
Other non-current assets				748,998
Current liabilities				(2,305,954)
Long-term debt				(8,355,386)
Deferred income taxes.				(6,834,807)
Other non-current liabilities				(189,355)
Total				9,958,323
Estimated amortization expense
Year Ending December 31, 2017		701,908
Amortization expense, 2018		655,409
Amortization expense, 2019		609,245
Amortization expense, 2020		562,613
Year Ending December 31, 2021		$ 515,430
Cablevision Systems Corporation And Subsidiaries | Customer relationships
Business Acquisition [Line Items]
Finite-lived intangible assets				4,850,000
Cablevision Systems Corporation And Subsidiaries | Trade names
Business Acquisition [Line Items]
Finite-lived intangible assets				1,010,000
Cablevision Systems Corporation And Subsidiaries | Amortizable intangible assets
Business Acquisition [Line Items]
Finite-lived intangible assets				$ 23,296
Cablevision Systems Corporation And Subsidiaries | Minimum | Customer relationships
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life		10 years
Cablevision Systems Corporation And Subsidiaries | Minimum | Amortizable intangible assets
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life		3 years
Cablevision Systems Corporation And Subsidiaries | Maximum | Customer relationships
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life		18 years
Cablevision Systems Corporation And Subsidiaries | Maximum | Amortizable intangible assets
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life		28 years

CVC - BUSINESS COMBINATION - Pr

CVC - BUSINESS COMBINATION - Pro Forma Information (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2016
Business Acquisition [Line Items]
Revenue		$ 9,154,816
Net loss		$ (721,257)
Cablevision Systems Corporation And Subsidiaries
Business Acquisition [Line Items]
Revenue	$ 6,545,545
Loss from continuing operations	(740,115)
Net loss	$ (752,656)