DIVIDENDS (Details) (USD $) In Thousands, except Per Share data	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	May 04, 2011	Feb. 15, 2011
Dividends [Abstract]
Dividends, declaration date			2011-05-04	2011-02-15
Dividend per share (in dollars per share)			$ 0.15	$ 0.125
Dividends, record date			2011-05-16	2011-02-28
Dividends, payment date			Jun. 06, 2011	Mar. 21, 2011
Dividends paid by Cablevision	$ 79,507	$ 67,503
Maximum dividends to be paid when, and if, restrictions lapse on restricted shares outstanding	7,113
CSC Holdings, LLC [Member]
Class of Stock [Line Items]
Distributions paid to Cablevision	$ 574,325	$ 124,011

The dividend or other distribution in cash to parent that is recorded as a decrease in equity.

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- Definition

The day, month and year (YYYY-MM-DD) that the dividend to be paid was declared.

+ Details

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- Definition

The date as of when a holder must own the stock to be entitled to the dividend.

+ Details

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- Definition

The aggregate amount of restricted dividends declared, but not paid, as of the financial reporting date. Maximum amount of dividends that will be paid when, and if, restrictions lapse on restricted shares outstanding.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ Details

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- Details

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- Definition

The per share amount of a dividend declared, but not paid, as of the financial reporting date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 32

+ Details

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- Definition

The day, month, and year (YYYY-MM-DD) that the dividend declared as of or prior to the financial reporting date will be paid in the subsequent period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 32

+ Details

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- Definition

The cash outflow from the distribution of an entity's earnings in the form of dividends to common shareholders.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 18

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 20
-Subparagraph a

+ Details

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