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DEBT - Credit Facilities Narrative (Details) - USD ($) | 1 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jan. 31, 2018 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017
Line of Credit Facility [Line Items] |  |  |  |
Proceeds from credit facility debt, net of discounts |  | $ 1,642,500,000 | $ 4,977,425,000 |
Principal Amount |  | 5,722,350,000 |  | $ 4,693,675,000
Repayment of credit facility debt |  | 621,325,000 | $ 3,573,750,000 |
CSC Holdings Revolving Credit Facility | Revolving Credit Facility |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Proceeds from credit facility debt, net of discounts | $ 150,000,000 |  |  |
Principal Amount |  | 0 |  | 450,000,000
Repayment of credit facility debt | 600,000,000 |  |  |
CSC Holdings Term Loan Facility | Term Loan |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Principal Amount | $ 1,500,000,000 | $ 2,970,000,000 |  | $ 2,985,000,000
Debt issued percentage of par | 99.50% |  |  |
CSC Holdings Term Loan Facility | Term Loan | Base Rate |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
basis spread on variable rate | 1.50% |  |  |
CSC Holdings Term Loan Facility | Term Loan | Eurodollar |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
basis spread on variable rate | 2.50% |  |  |

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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
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- Definition Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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