SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) (USD $) In Thousands	12 Months Ended
Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
Allowance for Doubtful Accounts Deducted from Trade Receivables [Roll Forward]
Balance, beginning of period	$ 15,710	$ 13,508	$ 4,452
Provision for bad debt	63,574	64,307	58,178
Deductions/write-offs and other charges	(61,498)	(62,105)	(52,959)
Additions through acquisitions	0	0	3,837
Balance, end of period	17,786	15,710	13,508
CSC Holdings [Member] \| Allowance for Doubtful AccountsDeducted from Trade Receivables [Member]
Allowance for Doubtful Accounts Deducted from Trade Receivables [Roll Forward]
Balance, beginning of period	15,710	13,508	4,452
Provision for bad debt	63,574	64,307	58,178
Deductions/write-offs and other charges	(61,498)	(62,105)	(52,959)
Additions through acquisitions	0	0	3,837
Balance, end of period	$ 17,786	$ 15,710	$ 13,508

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

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-Section 09

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-Publisher SEC

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- Definition

Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Regulation S-X (SX)

-Number 210

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