v3.26.1
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
CSC Holdings
Parent [Member]
Parent [Member]
CSC Holdings
Additional Paid-in Capital [Member]
Additional Paid-in Capital [Member]
CSC Holdings
Retained Earnings [Member]
Treasury Stock, Common
AOCI Attributable to Parent [Member]
AOCI Attributable to Parent [Member]
CSC Holdings
Noncontrolling Interest [Member]
Noncontrolling Interest [Member]
CSC Holdings
Common Class A
Common Stock
Common Class B
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]                            
Limited Liability Company (LLC) Members' Equity, Including Portion Attributable to Noncontrolling Interest   $ (459,620)   $ (472,023)   $ (468,197)       $ (3,826)   $ 12,403    
Beginning balance at Dec. 31, 2024 $ (456,832)   $ (469,235)   $ 233,953   $ (703,993) $ (10) $ (3,826)   $ 12,403   $ 2,799 $ 1,842
Increase (Decrease) in Stockholders' Equity [Roll Forward]                            
Net loss attributable to CSC Holdings, LLC sole member (75,676) (78,122) (75,676) (78,122)   (78,122) (75,676)              
Net income attributable to noncontrolling interests 4,405 4,405                 4,405 4,405    
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax 1,125 1,125 1,125 1,125         (1,125) 1,125        
Foreign currency translation adjustment (54) (54) (54) (54)         (54) (54)        
Share-based compensation expense (equity classified) 11,587 11,587 11,587 11,587 11,587 11,587                
Other, net (8,497)   (8,497)   (8,543)     0         46  
Ending balance at Mar. 31, 2025 (526,192)   (543,000)   236,997   (779,669) (10) (5,005)   16,808   2,845 1,842
Increase (Decrease) in Stockholders' Equity [Roll Forward]                            
Cash distributions to parent, net   (8,547)   (8,547)   (8,547)                
Beginning balance at Dec. 31, 2024 (456,832)   (469,235)   233,953   (703,993) (10) (3,826)   12,403   2,799 1,842
Increase (Decrease) in Stockholders' Equity [Roll Forward]                            
Net loss attributable to CSC Holdings, LLC sole member (171,927) (179,405)                        
Net income attributable to noncontrolling interests 12,670 12,670                        
Ending balance at Jun. 30, 2025 (625,494)   (624,115)   247,891   (875,920) (10) (772)   (1,379)   2,854 1,842
Increase (Decrease) in Stockholders' Equity [Roll Forward]                            
Distributions to noncontrolling interests (26,452) (26,452)                        
Limited Liability Company (LLC) Members' Equity, Including Portion Attributable to Noncontrolling Interest   (531,476)   (548,284)   (543,279)       (5,005)   16,808    
Beginning balance at Mar. 31, 2025 (526,192)   (543,000)   236,997   (779,669) (10) (5,005)   16,808   2,845 1,842
Increase (Decrease) in Stockholders' Equity [Roll Forward]                            
Net loss attributable to CSC Holdings, LLC sole member (96,251) (101,283) (96,251) (101,283)   (101,283) (96,251)              
Net income attributable to noncontrolling interests 8,265 8,265                 8,265 8,265    
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax (3,295) (3,295) (3,295) (3,295)         3,295 (3,295)        
Foreign currency translation adjustment 938 938 938 938         938 938        
Share-based compensation expense (equity classified) 12,054 12,054 12,054 12,054 12,054 12,054                
Other, net (1,151)   (1,151)   (1,160)               9  
Ending balance at Jun. 30, 2025 (625,494)   (624,115)   247,891   (875,920) (10) (772)   (1,379)   2,854 1,842
Increase (Decrease) in Stockholders' Equity [Roll Forward]                            
Cash distributions to parent, net   (1,148)   (1,148)   (1,148)                
Common shares held by a subsidiary (57,401)             (57,401)            
Distributions to noncontrolling interests (26,452)                   (26,452) (26,452)    
Limited Liability Company (LLC) Members' Equity, Including Portion Attributable to Noncontrolling Interest   (635,807)   (634,428)   (633,656)       (772)   (1,379)    
Limited Liability Company (LLC) Members' Equity, Including Portion Attributable to Noncontrolling Interest   (2,305,050)   (2,326,978)   (2,328,582)       1,604   21,928    
Beginning balance at Dec. 31, 2025 (2,292,228)   (2,314,156)   252,553   (2,573,017) (10) 1,604   21,928   2,884 1,830
Increase (Decrease) in Stockholders' Equity [Roll Forward]                            
Net loss attributable to CSC Holdings, LLC sole member (2,884,071) (2,886,482) (2,884,071) (2,886,482)   (2,886,482) (2,884,071)              
Net income attributable to noncontrolling interests 7,095 7,095                 7,095 7,095    
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax (423) (423) (423) (423)         423 (423)        
Foreign currency translation adjustment 17 17 17 17         17 17        
Share-based compensation expense (equity classified) 7,565 7,565 7,565 7,565 7,565 7,565                
Other, net (5,769)   (5,769)   (5,827)     0         58  
Ending balance at Mar. 31, 2026 (5,170,414)   (5,199,437)   250,845   (5,457,088) (10) 2,044   29,023   2,942 1,830
Increase (Decrease) in Stockholders' Equity [Roll Forward]                            
Distribution made to an entity under common control (3,446) (3,446) (3,446) (3,446) (3,446) (3,446)                
Beginning balance at Dec. 31, 2025 (2,292,228)   (2,314,156)   252,553   (2,573,017) (10) 1,604   21,928   2,884 1,830
Increase (Decrease) in Stockholders' Equity [Roll Forward]                            
Net loss attributable to CSC Holdings, LLC sole member (3,175,832) (3,180,578)                        
Net income attributable to noncontrolling interests 16,727 16,727                        
Ending balance at Jun. 30, 2026 (5,510,537)   (5,549,192)   245,128   (5,748,849) (57,411) 7,155   38,655   2,955 1,830
Increase (Decrease) in Stockholders' Equity [Roll Forward]                            
Accrued dividends related to redeemable preferred units (6,833)         55,948                
Distributions to noncontrolling interests 0 0                        
Limited Liability Company (LLC) Members' Equity, Including Portion Attributable to Noncontrolling Interest   (5,179,878)   (5,208,901)   (5,210,945)       2,044   29,023    
Beginning balance at Mar. 31, 2026 (5,170,414)   (5,199,437)   250,845   (5,457,088) (10) 2,044   29,023   2,942 1,830
Increase (Decrease) in Stockholders' Equity [Roll Forward]                            
Net loss attributable to CSC Holdings, LLC sole member (291,761) (294,096) (291,761) (294,096)   (294,096) (291,761)              
Net income attributable to noncontrolling interests 9,632 9,632                 9,632 9,632    
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax (5,126) (5,126) (5,126) (5,126)         5,126 (5,126)        
Foreign currency translation adjustment (15) (15) (15) (15)         (15) (15)        
Share-based compensation expense (equity classified) 3,789 3,789 3,789 3,789 3,789 3,789                
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders (1,461)                   0      
Other, net (1,199)   (1,199)   (1,212)     0         13  
Ending balance at Jun. 30, 2026 (5,510,537)   (5,549,192)   245,128   $ (5,748,849) $ (57,411) $ 7,155   $ 38,655   $ 2,955 $ 1,830
Increase (Decrease) in Stockholders' Equity [Roll Forward]                            
Cash distributions to parent, net   (61)   (61)   (61)                
Distribution made to an entity under common control   (1,461) (1,461) 1,461 (1,461) 1,461                
Accrued dividends related to redeemable preferred units $ (6,833) (6,833) (6,833) (6,833) $ (6,833) (6,833)                
Common shares held by a subsidiary   (57,401) $ (57,401) (57,401)   (57,401)                
Limited Liability Company (LLC) Members' Equity, Including Portion Attributable to Noncontrolling Interest   $ (5,521,198)   $ (5,559,853)   $ (5,567,008)       $ 7,155   $ 38,655