CSC HOLDINGS - CONSOLIDATED BALANCE SHEETS $ in Thousands	Dec. 31, 2019 USD ($)
Current Assets:
Cash and cash equivalents	$ 701,898
Restricted cash	262
Accounts receivable, trade (less allowance for doubtful accounts of $13,420 and $11,677)	457,118
Prepaid expenses and other current assets (including a prepayment to an affiliate of $19,563 in 2017) (See Note 14)	215,304
Amounts due from affiliates	6,774
Operating Lease, Right-of-Use Asset	280,340
Total current assets	1,381,356
Property, plant and equipment, net	5,753,401
Investment securities pledged as collateral	1,931,697
Derivative contracts	25,207
Other assets	92,622
Amortizable intangible assets, net of accumulated amortization	3,481,109
Indefinite-lived cable television franchises	13,020,081
Goodwill	8,142,309
Total assets	34,108,122
Current Liabilities:
Accounts payable	799,618
Amounts due to affiliates	7,456
Accrued liabilities:
Interest payable	385,655
Accrued employee related costs	111,337
Other Accrued Liabilities, Current	378,954
Contract with Customer, Liability, Current	124,777
Long-term Debt, Current Maturities	170,682
Total current liabilities	1,978,479
Other liabilities	204,904
Deferred tax liability	4,762,595
Liabilities under derivative contracts	255,666
Long-term Debt, Right-Of-Use Financing Obligations, Excluding Current Maturities	269,062
Long-term Debt, Excluding Current Maturities	24,249,603
Total liabilities	31,720,309
Commitments and contingencies
Redeemable equity	108,551
Limited Liability Company (LLC) Members' Equity [Abstract]
Retained earnings (accumulated deficit)	390,766
Accumulated other comprehensive income (loss)	(3,250)
Noncontrolling interest	9,298
Total liabilities and equity	34,108,122
Customer Relationships [Member]
Current Assets:
Amortizable intangible assets, net of accumulated amortization	3,173,963
Other Intangible Assets [Member]
Current Assets:
Amortizable intangible assets, net of accumulated amortization	24,547
CSC Holdings
Current Assets:
Cash and cash equivalents	697,741
Restricted cash	262
Accounts receivable, trade (less allowance for doubtful accounts of $13,420 and $11,677)	457,118
Prepaid expenses and other current assets (including a prepayment to an affiliate of $19,563 in 2017) (See Note 14)	211,642
Amounts due from affiliates	6,774
Operating Lease, Right-of-Use Asset	280,340
Total current assets	1,373,537
Property, plant and equipment, net	5,753,401
Investment securities pledged as collateral	1,931,697
Derivative contracts	25,207
Other assets	92,622
Amortizable intangible assets, net of accumulated amortization	3,481,109
Indefinite-lived cable television franchises	13,020,081
Goodwill	8,142,309
Total assets	34,100,303
Current Liabilities:
Accounts payable	799,618
Amounts due to affiliates	7,456
Accrued liabilities:
Interest payable	385,655
Accrued employee related costs	111,337
Other Accrued Liabilities, Current	378,948
Contract with Customer, Liability, Current	124,777
Long-term Debt, Current Maturities	170,682
Total current liabilities	1,978,473
Other liabilities	204,904
Deferred tax liability	4,980,599
Liabilities under derivative contracts	255,666
Long-term Debt, Right-Of-Use Financing Obligations, Excluding Current Maturities	269,062
Long-term Debt, Excluding Current Maturities	24,249,603
Total liabilities	31,938,307
Redeemable equity	108,551
Limited Liability Company (LLC) Members' Equity [Abstract]
Members' Equity	2,033,882
Retained earnings (accumulated deficit)	13,515
Membership interest before accumulated comprehensive loss	2,047,397
Accumulated other comprehensive income (loss)	(3,250)
Membership equity before noncontrolling interest	2,044,147
Noncontrolling interest	9,298
Limited Liability Company (LLC) Members' Equity, Including Portion Attributable to Noncontrolling Interest	2,053,445
Total liabilities and equity	$ 34,100,303