CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Income Statement [Abstract]
Revenue (including revenue from affiliates of $43, $102, $161, and $312 respectively) (See Note 14)	$ 2,147,203	$ 2,240,755	$ 4,299,485	$ 4,491,690
Operating expenses:
Programming and other direct costs (including charges from affiliates of $943, $3,147, $2,541, and $6,502, respectively) (See Note 14)	662,690	719,460	1,333,221	1,463,347
Other operating expenses (including charges from affiliates of $12,540, $8,470, $25,462, and $20,759 respectively) (See Note 14)	696,867	670,542	1,395,053	1,344,792
Restructuring, impairments and other operating items (See Note 7)	66,826	(46,599)	88,448	4,654
Depreciation and amortization	409,697	395,770	828,182	784,161
Total operating expenses	1,836,080	1,739,173	3,644,904	3,596,954
Operating income	311,123	501,582	654,581	894,736
Other income (expense):
Interest expense, net	(444,659)	(442,955)	(872,675)	(880,096)
Gain on investments and sale of affiliate interests	0	0	5	292
Gain (loss) on interest rate swap contracts, net	430	13,574	(1,289)	55,877
Loss on extinguishment of debt and write-off of deferred financing costs	(1,693)	0	(1,693)	(7,035)
Other expense, net	(834)	(1,486)	(1,797)	(3,031)
Total other income (expense)	(446,756)	(430,867)	(877,449)	(833,993)
Income (loss) before income taxes	(135,633)	70,715	(222,868)	60,743
Income tax benefit (expense)	47,647	(49,013)	63,611	(51,937)
Net income (loss)	(87,986)	21,702	(159,257)	8,806
Net income attributable to noncontrolling interests	(8,265)	(6,341)	(12,670)	(14,638)
Net income (loss) attributable to CSC Holdings, LLC sole member	$ (96,251)	$ 15,361	$ (171,927)	$ (5,832)
Net income (loss) per share:
Basic net income (loss) per share attributable to Altice USA, Inc. stockholders	$ (0.21)	$ 0.03	$ (0.37)	$ (0.01)
Basic weighted average common shares (in thousands)	467,744,000	459,995,000	466,311,000	458,682,000
Diluted income (loss) per share attributable to Altice USA, Inc. stockholders	$ (0.21)	$ 0.03	$ (0.37)	$ (0.01)
Diluted weighted average common shares (in thousands)	467,744,000	459,995,000	466,311,000	458,682,000
Cash dividends declared per common share	$ 0	$ 0	$ 0	$ 0