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SEGMENT INFORMATION - Reconciliation of Adjusted EBITDA to Operating Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Operating Income (Loss) from Continuing Operations Before Income Taxes [Abstract] |  |  |  |
Operating income | $ 335,059 | $ 253,268 | $ 648,097 | $ 503,378
Share-based compensation expense | 12,226 | 18,079 | 33,849 | 25,927
Restructuring and other expense | 9,691 | 12,388 | 13,278 | 89,317
Depreciation and amortization (including impairments) | 648,527 | 706,790 | 1,291,232 | 1,315,514
Adjusted EBITDA | 1,005,503 | 990,525 | 1,986,456 | 1,934,136
Cablevision |  |  |  |
Operating Income (Loss) from Continuing Operations Before Income Taxes [Abstract] |  |  |  |
Operating income | 203,265 | 109,799 | 373,958 | 231,843
Share-based compensation expense | 10,357 | 11,960 | 26,529 | 17,042
Restructuring and other expense | 8,515 | 11,171 | 11,598 | 69,818
Depreciation and amortization (including impairments) | 473,138 | 542,203 | 958,502 | 985,379
Adjusted EBITDA | 695,275 | 675,133 | 1,370,587 | 1,304,082
Cequel Corp. [Member] |  |  |  |
Operating Income (Loss) from Continuing Operations Before Income Taxes [Abstract] |  |  |  |
Operating income | 131,794 | 143,469 | 274,139 | 271,535
Share-based compensation expense | 1,869 | 6,119 | 7,320 | 8,885
Restructuring and other expense | 1,176 | 1,217 | 1,680 | 19,499
Depreciation and amortization (including impairments) | 175,389 | 164,587 | 332,730 | 330,135
Adjusted EBITDA | $ 310,228 | $ 315,392 | $ 615,869 | $ 630,054

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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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