CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Revenue (including revenue from affiliates of $13,238, $14,729 and $3,974, respectively) (See Note 16)	$ 10,090,849	$ 9,894,642	$ 9,760,859
Operating expenses:
Cost of Goods and Services Sold	3,382,129	3,340,442	3,300,528
Other operating expenses (including charges from affiliates of $11,989, $11,869 and $8,355 respectively) (See Note 16)	2,379,765	2,264,473	2,300,398
Restructuring and other expense	17,176	91,073	72,978
Depreciation and amortization (including impairments)	1,787,152	2,083,365	2,263,144
Total operating expenses	7,566,222	7,779,353	7,937,048
Operating Income (Loss), Total	2,524,627	2,115,289	1,823,811
Other income (expense):
Interest expense	(1,266,751)	(1,352,535)	(1,536,559)
Interest income	160	2,194	5,709
Gain (loss) on investments and sale of affiliate interests, net	(88,898)	320,061	473,406
Gain (loss) on derivative contracts, net	85,911	(178,264)	(282,713)
Gain (loss) on interest rate swap contracts	92,735	(78,606)	(53,902)
Loss on extinguishment of debt and write-off of deferred financing costs	(51,712)	(250,489)	(243,806)
Other income, net	9,835	5,577	1,183
Total other income (expense)	(1,218,720)	(1,532,062)	(1,636,682)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	1,305,907	583,227	187,129
Income tax expense	(294,975)	(139,748)	(47,190)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	1,010,932	443,479	139,939
Net income attributable to noncontrolling interests	(20,621)	(7,296)	(1,003)
Net income attributable to Altice USA, Inc. stockholders	$ 990,311	$ 436,183	$ 138,936
Earnings Per Share [Abstract]
Basic income per share	$ 2.16	$ 0.75	$ 0.21
Basic weighted average common shares (in thousands)	458,311	581,057	660,384
Diluted income per share	$ 2.14	$ 0.75	$ 0.21
Diluted weighted average common shares (in thousands)	462,295	583,689	662,541
Cash dividends declared per common share	$ 0	$ 0	$ 0