Mediacom Broadband 10-K 9 Mar 15 2014 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2014
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	FALSE
Document Period End Date	31-Dec-14
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Trading Symbol	MCCCB
Entity Registrant Name	MEDIACOM BROADBAND LLC
Entity Central Index Key	1161364
Current Fiscal Year End Date	-19
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding	0
Entity Public Float	$0

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
CURRENT ASSETS
Cash	$9,452	$11,237
Accounts receivable, net of allowance for doubtful accounts of $3,057 and $2,920	59,164	56,376
Accounts receivable-affiliates		4,444
Prepaid expenses and other current assets	9,664	10,818
Total current assets	78,280	82,875
Property, plant and equipment, net of accumulated depreciation of $1,493,705 and $1,368,697	775,321	791,543
Franchise rights	1,176,908	1,176,908
Goodwill	195,945	195,945
Other assets, net of accumulated amortization of $20,737 and $21,113	32,959	26,574
Total assets	2,259,413	2,273,845
CURRENT LIABILITIES
Accounts payable, accrued expenses and other current liabilities	144,595	156,607
Accounts payable-affiliates	1,513
Deferred revenue	36,245	35,599
Current portion of long-term debt	13,500	16,000
Total current liabilities	195,853	208,206
Long-term debt, less current portion	1,943,500	1,892,000
Other non-current liabilities	743	10,684
Total liabilities	2,140,096	2,110,890
Commitments and contingencies (Note 12)
PREFERRED MEMBERS' INTEREST (Note 7)	150,000	150,000
MEMBER'S (DEFICIT) EQUITY
Capital (distributions) contributions	-105,644	57,443
Retained earnings (accumulated deficit)	74,961	-44,488
Total member's (deficit) equity	-30,683	12,955
Total liabilities, preferred members' interest and member's (deficit) equity	$2,259,413	$2,273,845

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$3,057	$2,920
Accumulated depreciation on property, plant and equipment	1,493,705	1,368,697
Accumulated amortization on other assets	$20,737	$21,113

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Statement [Abstract]
Revenues	$948,447	$918,614	$897,420
Costs and expenses:
Service costs (exclusive of depreciation and amortization)	381,014	365,436	356,915
Selling, general and administrative expenses	180,084	185,188	180,736
Management fee expense	17,650	16,600	14,335
Depreciation and amortization	153,478	156,397	151,240
Operating income	216,221	194,993	194,194
Interest expense, net	-100,436	-96,203	-112,561
Gain on derivatives, net	23,226	22,782	6,217
Loss on early extinguishment of debt	-300	-832	-11,114
Other expense, net	-1,262	-1,793	-1,483
Net income	137,449	118,947	75,253
Dividend to preferred members (Note 7)	-18,000	-18,000	-18,000
Net income applicable to member	$119,449	$100,947	$57,253

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Member's (Deficit) Equity (USD $)	Total	Capital Contributions (Distributions) [Member]	Accumulated Deficit [Member]
In Thousands
Balance at Dec. 31, 2011	($108,344)	$94,344	($202,688)
Net income	75,253		75,253
Dividend payments to related party on preferred members' interest	-18,000		-18,000
Capital distributions to parent	-121,825	-121,825
Capital contributions from parent	114,500	114,500
Other	-907	-907
Balance at Dec. 31, 2012	-59,323	86,112	-145,435
Net income	118,947		118,947
Dividend payments to related party on preferred members' interest	-18,000		-18,000
Capital distributions to parent	-29,000	-29,000
Other	331	331
Balance at Dec. 31, 2013	12,955	57,443	-44,488
Net income	137,449		137,449
Dividend payments to related party on preferred members' interest	-18,000		-18,000
Capital distributions to parent	-163,300	-163,300
Other	213	213
Balance at Dec. 31, 2014	($30,683)	($105,644)	$74,961

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$137,449	$118,947	$75,253
Adjustments to reconcile net income to net cash flows provided by operating activities:
Depreciation and amortization	153,478	156,397	151,240
Gain on derivatives, net	-23,226	-22,782	-6,217
Loss on early extinguishment of debt	300	832	3,338
Amortization of deferred financing costs	6,132	5,332	5,109
Changes in assets and liabilities:
Accounts receivable, net	-2,788	2,168	5,527
Accounts receivable-affiliates	4,444	-4,444
Prepaid expenses and other assets	880	-1,377	-3,658
Accounts payable, accrued expenses and other current liabilities	1,605	-7,838	-261
Accounts payable-affiliates	1,513
Deferred revenue	646	1,040	1,034
Other non-current liabilities	-141	-183	-327
Net cash flows provided by operating activities	280,292	248,092	231,038
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	-137,275	-143,444	-146,988
Change in accrued property, plant and equipment	-315	-2,574	-8,796
Other, net	19
Net cash flows used in investing activities	-137,571	-146,018	-155,784
CASH FLOWS FROM FINANCING ACTIVITIES:
New borrowings of bank debt	853,750	835,000	572,500
Repayment of bank debt	-1,004,750	-886,000	-410,500
Issuance of senior notes	200,000		300,000
Redemption of senior notes			-500,000
Dividend payments on preferred members' interest	-18,000	-18,000	-18,000
Capital distributions to parent (Note 8)	-163,300	-29,000	-121,825
Capital contributions from parent (Note 8)			114,500
Financing costs	-12,480	-5,284	-13,316
Other financing activities	274	651	1,453
Net cash flows used in financing activities	-144,506	-102,633	-75,188
Net (decrease) increase in cash	-1,785	-559	66
CASH, beginning of year	11,237	11,796	11,730
CASH, end of year	9,452	11,237	11,796
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid during the period for interest, net of amounts capitalized	$92,739	$92,565	$109,611

Organization

Organization	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Organization	1. ORGANIZATION
	Mediacom Broadband LLC (“Mediacom Broadband” and collectively with its subsidiaries, “we,” “our” or “us”) is a Delaware limited liability company wholly-owned by Mediacom Communications Corporation (“MCC”). MCC is involved in the acquisition and operation of cable systems serving smaller cities and towns in the United States, and its cable systems are owned and operated through our operating subsidiaries and those of Mediacom LLC, a New York limited liability company wholly-owned by MCC. As limited liability companies, we and Mediacom LLC are not subject to income taxes and, as such, are included in the consolidated federal and state income tax returns of MCC, a C corporation.
	Our principal operating subsidiaries conduct all of our consolidated operations and own substantially all of our consolidated assets. Our operating subsidiaries are separate and distinct legal entities and have no obligation, contingent or otherwise, to make funds available to us.
	We rely on our parent, MCC, for various services such as corporate and administrative support. Our financial position, results of operations and cash flows could differ from those that would have resulted had we operated autonomously or as an entity independent of MCC. See Notes 8 and 9.
	Mediacom Broadband Corporation, a Delaware corporation wholly-owned by us, co-issued, jointly and severally with us, public debt securities. Mediacom Broadband Corporation has no operations, revenues or cash flows and has no assets, liabilities or stockholders’ equity on its balance sheet, other than a one-hundred dollar receivable from an affiliate and the same dollar amount of common stock. Therefore, separate financial statements have not been presented for this entity.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	Basis of Preparation of Consolidated Financial Statements
	The consolidated financial statements include the accounts of us and our subsidiaries. All significant intercompany transactions and balances have been eliminated. The preparation of the consolidated financial statements in conformity with generally accepted accounting principles in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The accounting estimates that require management’s most difficult and subjective judgments include: assessment and valuation of intangibles, accounts receivable allowance, useful lives of property, plant and equipment and capitalized labor. Actual results could differ from those and other estimates.
	Reclassifications
	Certain reclassifications have been made to prior year amounts to conform to the current year presentation.
	Revenue Recognition
	Video, HSD, phone and business services revenues are recognized when the services are provided to our customers. Credit risk is managed by disconnecting services to customers who are deemed to be delinquent. Installation revenues are recognized as customer connections are completed because installation revenues are less than direct installation costs. Advertising sales are recognized in the period that the advertisements are exhibited. Deposits and up-front fees collected from customers are recognized as deferred revenue until the earnings process is complete. Under the terms of our franchise agreements, we are required to pay local franchising authorities up to 5% of our gross revenues derived from providing video service. We normally pass these fees through to our customers. Because franchise fees are our obligation, we present them on a gross basis with a corresponding expense. Franchise fees reported on a gross basis amounted to approximately $21.7 million, $23.9 million and $24.7 million for the years ended December 31, 2014, 2013 and 2012, respectively. Franchise fees are reported in video revenue and included in selling, general and administrative expenses.
	Allowance for Doubtful Accounts
	The allowance for doubtful accounts represents our best estimate of probable losses in the accounts receivable balance. The allowance is based on the number of days outstanding, customer balances, recoveries, historical experience and other currently available information.
	Concentration of Credit Risk
	Our accounts receivable are comprised of amounts due from customers in varying regions throughout the United States. Concentration of credit risk with respect to these receivables is limited due to the large number of customers comprising our customer base and their geographic dispersion. We invest our cash with high quality financial institutions.
	Property, Plant and Equipment
	Property, plant and equipment are recorded at cost. Additions to property, plant and equipment generally include material, labor and indirect costs. Depreciation is calculated on a straight-line basis over the following useful lives:
	Buildings		40 years
	Leasehold improvements		Life of respective lease
	Cable systems and equipment and customer devices		5 to 20 years
	Vehicles		4-5 years
	Furniture, fixtures, and office equipment		5 years
	We capitalize improvements that extend asset lives and expense repairs and maintenance as incurred. At the time of retirements, write-offs, sales or other dispositions of property, the original cost and related accumulated depreciation are removed from the respective accounts and the gains or losses are included in depreciation and amortization expense in the consolidated statement of operations.
	We capitalize the costs associated with the construction of cable transmission and distribution facilities, new customer installations and indirect costs associated with our phone service. Costs include direct labor and material, as well as certain indirect costs including capitalized interest. We perform periodic evaluations of the estimates used to determine the amount and extent that such costs are capitalized. Any changes to these estimates, which may be significant, are applied in the period in which the evaluations were completed. The costs of disconnecting service at a customer’s dwelling or reconnecting to a previously installed dwelling are charged as expense in the period incurred. Costs associated with subsequent installations of additional services not previously installed at a customer’s dwelling are capitalized to the extent such costs are incremental and directly attributable to the installation of such additional services. See Note 3.
	Capitalized Software Costs
	We account for internal-use software development and related costs in accordance with ASC 350-40-Intangibles-Goodwill and Other: Internal-Use Software. Software development and other related costs consist of external and internal costs incurred in the application development stage to purchase and implement the software that will be used in our telephony business. Costs incurred in the development of application and infrastructure of the software is capitalized and will be amortized over our respective estimated useful life of 5 years. During the years ended December 31, 2014 and 2013, we capitalized approximately $0.1 million and $0.2 million, respectively, of software development costs. Capitalized software had a net book value of $1.5 million and $2.4 million as of December 31, 2014 and 2013, respectively.
	In connection with our detailed analysis of capitalized software costs in 2014, we identified an amount that required adjustment to our 2013 financial statement disclosures to properly reflect net book value of our capitalized software costs as of December 31, 2013. Accordingly, the 2013 disclosure has been revised to reflect the appropriate amount, which management believes is immaterial to prior periods, and to conform to the current year presentation. The revision decreased the net book value disclosed at December 31, 2013 by approximately $13.9 million. The revision had no impact on our previously reported net capitalized software which is reported as a component of property, plant and equipment, in our financial statements. This revision also had no impact on accumulated depreciation, results of operations or cash flows.
	Marketing and Promotional Costs
	Marketing and promotional costs are expensed as incurred and were $24.3 million, $22.6 million and $22.9 million for the years ended December 31, 2014, 2013 and 2012, respectively.
	Intangible Assets
	Our cable systems operate under non-exclusive cable franchises, or franchise rights, granted by state and local governmental authorities for varying lengths of time. We acquired these cable franchises through acquisitions of cable systems and were accounted for using the purchase method of accounting. As of December 31, 2014, we held 493 franchises in areas located throughout the United States. The value of a franchise is derived from the economic benefits we receive from the right to solicit new customers and to market our products and services, including video, HSD and phone, in a specific market territory. We concluded that our franchise rights have an indefinite useful life since, among other things, there are no legal, regulatory, contractual, competitive, economic or other factors limiting the period over which these franchise rights contribute to our revenues and cash flows. Goodwill is the excess of the acquisition cost of an acquired entity over the fair value of the identifiable net assets acquired. In accordance with ASC 350 — Intangibles — Goodwill and Other (“ASC 350”), we do not amortize franchise rights and goodwill. Instead, such assets are tested annually for impairment or more frequently if impairment indicators arise.
	We follow the provisions of ASC 350 to test our goodwill and franchise rights for impairment. We assess the fair values of our reporting unit using the Excess Earnings Method of the Income Approach as our discounted cash flow (“DCF”) methodology, under which the fair value of cable franchise rights are determined in a direct manner. We employ the Multi-Period Excess Earnings Method to calculate the fair values of our cable franchise rights, using unobservable inputs (Level 3). This assessment involves significant judgment, including certain assumptions and estimates that determine future cash flow expectations and other future benefits, which are consistent with the expectations of buyers and sellers of cable systems in determining fair value. These assumptions and estimates include discount rates, estimated growth rates, terminal growth rates, comparable company data, revenues per customer, market penetration as a percentage of homes passed and operating margin. We also consider market transactions, market valuations, research analyst estimates and other valuations using multiples of operating income before depreciation and amortization to confirm the reasonableness of fair values determined by the DCF methodology. We also employ the Greenfield model to corroborate the fair values of our cable franchise rights determined under the In-use Excess Earnings DCF methodology. Significant impairment in value resulting in impairment charges may result if the estimates and assumptions used in the fair value determination change in the future. Such impairments, if recognized, could potentially be material.
	Based on the guidance outlined in ASC 350, we have determined that the unit of accounting or reporting unit, for testing goodwill and franchise rights is Mediacom Broadband. Comprising cable system clusters across several states, Mediacom Broadband is at the financial reporting level that is managed and reviewed by the corporate office (i.e., chief operating decision maker) including our determination as to how we allocate capital resources and utilize the assets. The reporting unit level also reflects the level at which the purchase method of accounting for our acquisitions was originally recorded.
	In accordance with ASC 350, we are required to determine goodwill impairment using a two-step process. The first step compares the fair value of a reporting unit with our carrying amount, including goodwill. If the fair value of the reporting unit exceeds our carrying amount, goodwill of the reporting unit is considered not impaired and the second step is unnecessary. If the carrying amount of a reporting unit exceeds our fair value, the second step is performed to measure the amount of impairment loss, if any. The second step compares the implied fair value of the reporting unit’s goodwill, calculated using the residual method, with the carrying amount of that goodwill. If the carrying amount of the goodwill exceeds the implied fair value, the excess is recognized as an impairment loss.
	The impairment test for our franchise rights and other intangible assets not subject to amortization consists of a comparison of the fair value of the intangible asset with its carrying value. If the carrying value of the intangible asset exceeds its fair value, the excess is recognized as an impairment loss.
	Since our adoption of ASC 350 in 2002, we have not recorded any impairments as a result of our impairment testing. We completed our most recent impairment test as of October 1, 2014, which reflected no impairment of our franchise rights, goodwill or other intangible assets.
	We could record impairments in the future if there are changes in the long-term fundamentals of our business, in general market conditions or in the regulatory landscape that could prevent us from recovering the carrying value of our long-lived intangible assets. The economic conditions affecting the U.S. economy, and how that may impact the fundamentals of our business, may have a negative impact on the fair values of the assets in our reporting unit.
	In accordance with Accounting Standards Update No. 2010-28 — When to Perform Step 2 of the Goodwill Impairment Test for Reporting Units with Zero or Negative Carrying Amounts (a consensus of the FASB Emerging Issues Task Force), as of October 1, 2014, we have evaluated whether there are any adverse qualitative factors surrounding our Mediacom Broadband reporting unit indicating that a goodwill impairment may exist. We do not believe that it is “more likely than not” that a goodwill impairment exists. As such, we have not performed Step 2 of the goodwill impairment test. As of December 31, 2014, the Mediacom Broadband reporting unit had a negative carrying amount, and as of December 31, 2013, the Mediacom Broadband reporting unit had a positive carrying amount.
	The following table details changes in the carrying value of goodwill for the years ended December 31, 2014 and 2013, respectively, (dollars in thousands):
	Balance—December 31, 2012	$	195,945
	Acquisitions		—
	Dispositions		—
	Balance—December 31, 2013	$	195,945
	Acquisitions		—
	Dispositions		—
	Balance—December 31, 2014	$	195,945
	Segment Reporting
	ASC 280 — Segment Reporting (“ASC 280”) requires the disclosure of factors used to identify an enterprise’s reportable segments. Our operations are organized and managed on the basis of cable system clusters within our service area. Each cable system cluster derives revenues from the delivery of similar products and services to a customer base that is also similar. Each cable system cluster deploys similar technology to deliver our products and services, operates within a similar regulatory environment and has similar economic characteristics. Management evaluated the criteria for aggregation under ASC 280 and believes that we meet each of the respective criteria set forth. Accordingly, management has identified broadband services as our one reportable segment.
	Accounting for Derivative Instruments
	We account for derivative instruments in accordance with ASC 815 — Derivatives and Hedging. These pronouncements require that all derivative instruments be recognized on the balance sheet at fair value. We enter into interest rate exchange agreements to fix the interest rate on a portion of our variable interest rate debt to reduce the potential volatility in our interest expense that would otherwise result from changes in market interest rates. Our derivative instruments are recorded at fair value and are included in other current assets, other assets and other liabilities of our consolidated balance sheet. Our accounting policies for these instruments are based on whether they meet our criteria for designation as hedging transactions, which include the instrument’s effectiveness, risk reduction and, in most cases, a one-to-one matching of the derivative instrument to our underlying transaction. Gains and losses from changes in fair values of derivatives that are not designated as hedges for accounting purposes are recognized in the consolidated statement of operations. We have no derivative financial instruments designated as hedges. Therefore, changes in fair value for the respective periods were recognized in the consolidated statement of operations.
	Accounting for Asset Retirement
	We adopted ASC 410 — Asset Retirement Obligations (“ASC 410”), on January 1, 2003. ASC 410 addresses financial accounting and reporting for obligations associated with the retirement of tangible long-lived assets and the associated asset retirement costs. We reviewed our asset retirement obligations to determine the fair value of such liabilities and if a reasonable estimate of fair value could be made. This entailed the review of leases covering tangible long-lived assets as well as our rights-of-way under franchise agreements. Certain of our franchise agreements and leases contain provisions that require restoration or removal of equipment if the franchises or leases are not renewed. Based on historical experience, we expect to renew our franchise or lease agreements. In the unlikely event that any franchise or lease agreement is not expected to be renewed, we would record an estimated liability. However, in determining the fair value of our asset retirement obligation under our franchise agreements, consideration will be given to the Cable Communications Policy Act of 1984, which generally entitles the cable operator to the “fair market value” for the cable system covered by a franchise, if renewal is denied and the franchising authority acquires ownership of the cable system or effects a transfer of the cable system to another person. Changes in these assumptions based on future information could result in adjustments to estimated liabilities.
	Upon adoption of ASC 410, we determined that in certain instances, we are obligated by contractual terms or regulatory requirements to remove facilities or perform other remediation activities upon the retirement of our assets. We initially recorded a $1.8 million asset in property, plant and equipment and a corresponding liability of $1.8 million. As of both December 31, 2014 and 2013, the corresponding asset, net of accumulated amortization, was $0.
	Accounting for Long-Lived Assets
	In accordance with ASC 360 — Property, Plant and Equipment, we periodically evaluate the recoverability and estimated lives of our long-lived assets, including property and equipment and intangible assets subject to amortization, whenever events or changes in circumstances indicate that the carrying amount may not be recoverable or the useful life has changed. The measurement for such impairment loss is based on the fair value of the asset, typically based upon the future cash flows discounted at a rate commensurate with the risk involved. Unless presented separately, the loss is included as a component of either depreciation expense or amortization expense, as appropriate.
	Programming Costs
	We have various fixed-term carriage contracts to obtain programming for our cable systems from content suppliers whose compensation is generally based on a fixed monthly fee per customer. These programming contracts are subject to negotiated renewal. Programming costs are recognized when we distribute the related programming. These programming costs are usually payable each month based on calculations performed by us and are subject to adjustments based on the results of periodic audits by the content suppliers. Historically, such audit adjustments have been immaterial to our total programming costs. Some content suppliers offer financial incentives to support the launch of a channel and ongoing marketing support. When such financial incentives are received, we defer them within non-current liabilities in our consolidated balance sheets and recognize such amounts as a reduction of programming costs (which are a component of service costs in the consolidated statement of operations) over the carriage term of the programming contract.
	Recent Accounting Pronouncements
	In December 2013, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update No. 2013-12 (“ASU 2013-12”) – Definition of a Public Business Entity. ASU 2013-12 defines a public business entity to be used in considering the scope of new financial guidance and identifies whether the guidance does or does not apply to public business entities. The Accounting Standards Codification includes multiple definitions of the terms nonpublic entity and public entity. ASU 2013-12 states that an entity that is required by the SEC to file or furnish financial statements with the SEC, or does file or furnish financial statements with the SEC, is considered a public business entity. There is no effective date for ASU 2013-12. We adopted ASU 2013-12 as of December 31, 2013. We are deemed to be a public entity according to this guidance.
	In May 2014, the FASB issued ASU No. 2014-09 (“ASU 2014-09”) – Revenue from Contracts with Customers. The guidance states that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. An entity should also disclose sufficient information to enable users of financial statements to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. This guidance supersedes most industry-specific guidance, including Statement of Financial Accounting Standards No. 51 – Financial Reporting by Cable Television Companies. ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early application is not permitted. We have not completed our evaluation of this new guidance to determine its impact on our financial statements, financial disclosures and our method of adoption.

Property_Plant_and_Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	3. PROPERTY, PLANT AND EQUIPMENT
	As of December 31, 2014 and 2013, property, plant and equipment consisted of (dollars in thousands):
		December 31,			December 31,
		2014			2013
	Cable systems, equipment and customer devices	$	2,143,668		$	2,033,815
	Furniture, fixtures and office equipment		42,278			44,689
	Vehicles		40,362			40,085
	Buildings and leasehold improvements		34,720			33,512
	Land and land improvements		7,998			8,139
	Property, plant and equipment, gross	$	2,269,026		$	2,160,240
	Accumulated depreciation		(1,493,705	)		(1,368,697	)
	Property, plant and equipment, net	$	775,321		$	791,543
	Depreciation expense related to fixed assets for the years ended December 31, 2014, 2013 and 2012 was $153.5 million, $156.4 million and $150.7 million, respectively. As of each of December 31, 2014, 2013 and 2012, we had no property under capitalized leases. We incurred gross interest costs of $101.7 million, $97.3 million and $114.2 million for the years ended December 31, 2014, 2013 and 2012, respectively, of which $1.3 million, $1.1 million and $1.6 million were capitalized during the years ended December 31, 2014, 2013 and 2012, respectively. See Note 2.

Fair_Value

Fair Value	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair Value	4. FAIR VALUE
	The tables below set forth our financial assets and liabilities measured at fair value on a recurring basis using a market-based approach at December 31, 2014 and December 31, 2013. Our financial assets and liabilities, all of which represent interest rate exchange agreements (which we refer to as “interest rate swaps”) have been categorized according to the three-level fair value hierarchy established by ASC 820, which prioritizes the inputs used in measuring fair value, as follows:
	•	Level 1 — Quoted market prices in active markets for identical assets or liabilities.
	•	Level 2 — Observable market based inputs or unobservable inputs that are corroborated by market data.
	•	Level 3 — Unobservable inputs that are not corroborated by market data.
	As of December 31, 2014, our interest rate swap liabilities, net, were valued at $11.0 million using Level 2 inputs, as follows (dollars in thousands):
		Fair Value as of December 31, 2014
		Level 1		Level 2		Level 3		Total
	Assets
	Interest rate exchange agreements	$	—	$	—	$	—	$	—
	Liabilities
	Interest rate exchange agreements	$	—	$	11,049	$	—	$	11,049
	Interest rate exchange agreements—liabilities, net	$	—	$	11,049	$	—	$	11,049
	As of December 31, 2013, our interest rate swap liabilities, net, were valued at $34.3 million using Level 2 inputs, as follows (dollars in thousands):
		Fair Value as of December 31, 2013
		Level 1		Level 2		Level 3		Total
	Assets
	Interest rate exchange agreements	$	—	$	—	$	—	$	—
	Liabilities
	Interest rate exchange agreements	$	—	$	34,275	$	—	$	34,275
	Interest rate exchange agreements—liabilities, net	$	—	$	34,275	$	—	$	34,275
	The fair value of our interest rate swaps represents the estimated amount that we would receive or pay to terminate such agreements, taking into account projected interest rates, based on quoted London Interbank Offered Rate (“LIBOR”) futures and the remaining time to maturity. While our interest rate swaps are subject to contractual terms that provide for the net settlement of transactions with counterparties, we do not offset assets and liabilities under these agreements for financial statement presentation purposes, and assets and liabilities are reported on a gross basis.
	All of our interest rate swaps were in a liability position as of each of December 31, 2014 and December 31, 2013, based upon their mark-to-market valuation, and therefore no assets were recorded on our consolidated balance sheets. As of December 31, 2014, we recorded a current liability in accounts payable, accrued expenses and other current liabilities of $11.0 million. As of the same date, there was no long-term liability. As of December 31, 2013, we recorded a current liability in accounts payable, accrued expenses and other current liabilities of $24.5 million and an accumulated long-term liability in other non-current liabilities of $9.8 million.
	As a result of the changes in the mark-to-market valuations on these interest rate swaps, we recorded net gains on derivatives of $23.2 million, $22.8 million and $6.2 million for the years ended December 31, 2014, 2013 and 2012, respectively.

Accounts_Payable_Accrued_Expen

Accounts Payable, Accrued Expenses and Other Current Liabilities	12 Months Ended
	Dec. 31, 2014
Payables and Accruals [Abstract]
Accounts Payable, Accrued Expenses and Other Current Liabilities	5. ACCOUNTS PAYABLE, ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES
	Accounts payable, accrued expenses and other current liabilities consisted of the following as of December 31, 2014 and 2013 (dollars in thousands):
			December 31,		December 31,
			2014		2013
	Accounts payable - trade		$	33,474	$	30,157
	Accrued programming costs			25,680		25,482
	Accrued taxes and fees			15,072		16,731
	Accrued payroll and benefits			14,514		17,155
	Liabilities under interest rate exchange agreements			11,049		24,475
	Advance customer payments			9,387		8,775
	Accrued service costs			7,922		8,076
	Accrued interest			7,451		5,902
	Bank overdrafts (1)			5,025		4,901
	Accrued property, plant and equipment			3,901		4,216
	Accrued telecommunications costs			754		1,702
	Other accrued expenses			10,366		9,035
	Accounts payable, accrued expenses and other current liabilities		$	144,595	$	156,607
	(1)	Bank overdrafts represented outstanding checks in excess of funds on deposit at our disbursement accounts. We transfer funds from our depository accounts to our disbursement accounts upon daily notification of checks presented for payment. Changes in bank overdrafts are reported in “other financing activities” in our Consolidated Statement of Cash Flows.

Debt

Debt	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Debt	6. DEBT
	As of December 31, 2014 and 2013, our outstanding debt consisted of (dollars in thousands):
			December 31,		December 31,
			2014		2013
	Bank credit facility		$	1,457,000	$	1,608,000
	5  1⁄2% senior notes due 2021			200,000		—
	6  3⁄8% senior notes due 2023			300,000		300,000
	Total debt		$	1,957,000	$	1,908,000
	Less: current portion			13,500		16,000
	Total long-term debt		$	1,943,500	$	1,892,000
	Bank Credit Facility
	As of December 31, 2014, we maintained a $1.590 billion bank credit facility (the “credit facility”), comprising:
		•		$256.0 million of revolving credit commitments, which expire on October 10, 2019;
		•		$195.5 million of outstanding borrowings under Term Loan G, which mature on January 20, 2020;
		•		$591.0 million of outstanding borrowings under Term Loan H, which mature on January 29, 2021;
		•		$248.8 million of outstanding borrowings under Term Loan I, which mature on June 30, 2017; and
		•		$298.5 million of outstanding borrowings under Term Loan J, which mature on June 30, 2021.
	The credit facility is collateralized by our ownership interests in our operating subsidiaries and is guaranteed by us on a limited recourse basis to the extent of such ownership interests. As of December 31, 2014, the credit agreement governing the credit facility (the “credit agreement”) required our operating subsidiaries to maintain a total leverage ratio (as defined in the credit agreement) of no more than 5.0 to 1.0 and an interest coverage ratio (as defined in the credit agreement) of no less than 2.0 to 1.0. For all periods through December 31, 2014, our operating subsidiaries were in compliance with all covenants under the credit agreement.
	Revolving Credit Commitments
	On October 10, 2014, we terminated our existing revolving credit commitments and, on the same date, entered into an incremental facility agreement that provided for $216.0 million of new revolving credit commitments, which are scheduled to expire on October 10, 2019. On December 9, 2014, we entered into an incremental facility agreement that provided for an additional $40.0 million of revolving credit commitments.
	Borrowings under our revolving credit commitments bear interest at a floating rate or rates equal to, at our discretion, LIBOR plus a margin ranging from 2.00% to 2.75%, or the Prime Rate plus a margin ranging from 1.00% to 1.75%. Commitment fees on the unused portion of our revolving credit commitments are payable at a rate of 0.38% or 0.50%. The applicable margin and commitment fees charged are determined by certain financial ratios pursuant to the credit agreement.
	As of December 31, 2014, we had $122.3 million of unused revolving credit commitments, all of which were available to be borrowed and used for general corporate purposes, after giving effect to $123.3 million of outstanding loans and $10.4 million of letters of credit issued to various parties as collateral.
	Term Loan G
	On August 28, 2012, we entered into an amended and restated credit agreement that, among other things, provided for a new term loan in the original principal amount of $200.0 million (“Term Loan G”). Term Loan G matures on January 20, 2020 and, since December 31, 2012, has been subject to quarterly reductions of $0.5 million, representing 0.25% of the original principal amount, with a final payment at maturity of $185.5 million, representing 92.75% of the original principal amount. As of December 31, 2014, the outstanding balance under Term Loan G was $195.5 million.
	Borrowings under Term Loan G bear interest at a floating rate or rates equal to, at our discretion, LIBOR plus a margin of 3.00% (subject to a minimum LIBOR of 1.00%), or the Prime Rate plus a margin of 2.00% (subject to a minimum Prime Rate of 2.00%).
	Term Loan H
	On May 29, 2013, we entered into an incremental facility agreement that provided for a new term loan in the original principal amount of $600.0 million (“Term Loan H”). Term Loan H matures on January 29, 2021 and, since September 30, 2013, has been subject to quarterly reductions of $1.5 million, representing 0.25% of the original principal amount, with a final payment at maturity of $555.0 million, representing 92.5% of the original principal amount. As of December 31, 2014, the outstanding balance under Term Loan H was $591.0 million.
	Borrowings under Term Loan H bear interest at a floating rate or rates equal to, at our discretion, LIBOR plus a margin of 2.50% (subject to a minimum LIBOR of 0.75%), or the Prime Rate plus a margin of 1.50% (subject to a minimum Prime Rate of 1.75%).
	Term Loan I
	On June 20, 2014, we entered into an amended and restated credit agreement that, among other things, provided for a new term loan in the original principal amount of $250.0 million (“Term Loan I”). After giving effect to $3.2 million of financing costs, net proceeds of $246.8 million from Term Loan I were used, together with Term Loan J, to fund the repayment of the remaining $542.5 million under the previously existing Term Loan D. Term Loan I matures on June 30, 2017 and, since September 30, 2014, has been subject to quarterly principal reductions of $0.6 million, representing 0.25% of the original principal amount, with a final payment at maturity of $243.1 million, representing 97.25% of the original principal amount. As of December 31, 2014, the outstanding balance under Term Loan I was $248.8 million.
	Borrowings under Term Loan I bear interest at a floating rate or rates equal to, at our discretion, LIBOR plus a margin of 2.50%, or the Prime Rate plus a margin of 1.50%.
	Term Loan J
	On June 20, 2014, we entered into an amended and restated credit agreement that, among other things, provided for a new term loan in the original principal amount $300.0 million (“Term Loan J”). After giving effect to $3.4 million of financing costs, net proceeds of $296.6 million from Term Loan J were used, together with Term Loan I, to fund the repayment of the remaining $542.5 million under the previously existing Term Loan D. Term Loan J matures on June 30, 2021 and, since September 30, 2014, has been subject to quarterly principal reductions of $0.8 million, representing 0.25% of the original principal amount, with a final payment at maturity of $279.8 million, representing 93.25% of the original principal amount. As of December 31, 2014, the outstanding balance under Term Loan J was $298.5 million.
	Borrowings under Term Loan J bear interest at a floating rate or rates equal to, at our discretion, LIBOR plus a margin of 2.75% or 3.00% (subject to a minimum LIBOR of 0.75%), or the Prime Rate plus a margin of 1.75% or 2.00% (subject to a minimum Prime Rate of 1.75%). The applicable margin charged is determined by certain financial ratios pursuant to the credit agreement.
	Interest Rate Swaps
	We have entered into several interest rate swaps with various banks to fix the variable rate of borrowings to reduce the potential volatility in our interest expense that may result from changes in market interest rates. Our interest rate swaps have not been designated as hedges for accounting purposes, and have been accounted for on a mark-to-market basis as of, and for the years ended, December 31, 2014, 2013 and 2012. As of December 31, 2014, we had current interest rate swaps which fixed the variable portion of $500 million of borrowings at a rate of 2.6%, all of which are scheduled to expire during the year ending December 31, 2015.
	As of December 31, 2014, the weighted average interest rate on outstanding borrowings under the credit facility, including the effect of our interest rate swaps, was 4.1%.
	Senior Notes
	As of December 31, 2014, we had $500 million of outstanding senior notes, comprised of $200 million of 5 1⁄2% senior notes due April 2021 (the “5 1⁄2% Notes”), and $300 million of 6 3⁄8% senior notes due April 2023 (the “6 3⁄8% Notes”).
	Our senior notes are unsecured obligations, and the indentures governing our senior notes (the “indentures”) limits the incurrence of additional indebtedness based upon a maximum debt to operating cash flow ratio (as defined in the indenture) of 8.5 to 1.0. For all periods through December 31, 2014, we were in compliance with all of the covenants under the indentures.
	5 1⁄2% Notes
	On March 17, 2014, we issued the 5 1⁄2% Notes in the aggregate principal amount of $200.0 million. Net proceeds from the 5 1⁄2% Notes of $196.2 million funded a partial repayment of certain previously existing term loans.
	6 3⁄8% Notes
	On August 28, 2012, we issued the 6  3⁄8% Notes in the aggregate principal amount of $300.0 million. Net proceeds from the 6  3⁄8% Notes of $294.5 million were used to fund, in part, the redemption of certain previously existing senior notes.
	Other Assets
	Other assets, net, primarily include financing costs and original issue discount incurred to raise debt, which are deferred and amortized as interest expense over the expected term of such financings. Original issue discount, as recorded in other assets, net, was $8.7 million and $8.2 million as of December 31, 2014 and 2013, respectively.
	Debt Ratings
	MCC’s corporate credit ratings are Ba3 by Moody’s, and BB- by Standard and Poor’s (“S&P”), both with stable outlooks. Our senior unsecured ratings are B2 by Moody’s, and B by S&P, both with stable outlooks. There are no covenants, events of default, borrowing conditions or other terms in the credit agreement or indentures that are based on changes in our credit rating assigned by any rating agency.
	Fair Value and Debt Maturities
	As of December 31, 2014 and 2013, the fair values of our senior notes and outstanding debt under the credit facility (which were calculated based upon market prices of such issuances in an active market when available) were as follows (dollars in thousands):
			December 31,
			2014		2013
	5 1⁄2% senior notes due 2021		$	202,000	$	—
	6 3⁄8% senior notes due 2023			309,000		308,250
	Total senior notes		$	511,000	$	308,250
	Bank credit facility		$	1,426,126	$	1,602,472
	The scheduled maturities of all debt outstanding as of December 31, 2014 are as follows (dollars in thousands):
			Bank Credit Facility				Senior
			Revolving Credit		Term Loans		Notes		Total
	January 1, 2015 to December 31, 2015		$	—	$	13,500	$	—	$	13,500
	January 1, 2016 to December 31, 2016			—		13,500		—		13,500
	January 1, 2017 to December 31, 2017			—		254,750		—		254,750
	January 1, 2018 to December 31, 2018			—		11,000		—		11,000
	January 1, 2019 to December 31, 2019			123,250		11,000		—		134,250
Thereafter			—		1,030,000		500,000		1,530,000
Total		$	123,250	$	1,333,750	$	500,000	$	1,957,000

Preferred_Members_Interest

Preferred Members' Interest	12 Months Ended
	Dec. 31, 2014
Equity Method Investments and Joint Ventures [Abstract]
Preferred Members' Interest	7. PREFERRED MEMBERS’ INTEREST
	In July 2001, we received a $150.0 million preferred equity investment from Mediacom LLC, another wholly-owned subsidiary of MCC. The preferred equity investment has a 12% annual dividend, payable quarterly in cash. We paid $18.0 million in cash dividends on the preferred membership interest during each of the years ended December 31, 2014, 2013 and 2012.

Members_Deficit_Equity

Member's (Deficit) Equity	12 Months Ended
	Dec. 31, 2014
Equity [Abstract]
Member's (Deficit) Equity	8. MEMBER’S (DEFICIT) EQUITY
	As a wholly-owned subsidiary of MCC, our business affairs, including our financing decisions, are directed by MCC. See Note 9.
	Capital contributions from parent and capital distributions to parent are reported on a gross basis in the Consolidated Statements of Changes in Member’s (Deficit) Equity and the Consolidated Statements of Cash Flows. We made capital distributions to parent in cash of $163.3 million, $29.0 million and $121.8 million during the years ended December 31, 2014, 2013 and 2012, respectively, and received capital contributions from parent in cash of $114.5 million during the year ended December 31, 2012.

Related_Party_Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2014
Related Party Transactions [Abstract]
Related Party Transactions	9. RELATED PARTY TRANSACTIONS
	Management Agreements
	MCC manages us pursuant to a management agreement with our operating subsidiaries. Under such agreements, MCC has full and exclusive authority to manage our day to day operations and conduct our business. We remain responsible for all expenses and liabilities relating to the construction, development, operation, maintenance, repair, and ownership of our systems.
	As compensation for the performance of its services, subject to certain restrictions, MCC is entitled under each management agreement to receive management fees in an amount not to exceed 4.0% of the annual gross operating revenues of our operating subsidiaries. MCC is also entitled to the reimbursement of all expenses necessarily incurred in its capacity as manager. MCC charged us management fees of $17.7 million, $16.6 million and $14.3 million during the years ended December 31, 2014, 2013 and 2012, respectively.
	Mediacom LLC is a preferred equity investor in us. See Note 7.

Employee_Benefit_Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Employee Benefit Plans	10. EMPLOYEE BENEFIT PLANS
	Substantially all our employees are eligible to participate in MCC’s defined contribution plan pursuant to the Internal Revenue Code Section 401(k) (“MCC’s Plan”). Under such Plan, eligible employees may contribute up to 15% of their current pretax compensation. MCC’s Plan permits, but does not require, matching contributions and non-matching (profit sharing) contributions to be made by us up to a maximum dollar amount or maximum percentage of participant contributions, as determined annually by us. We presently match 50% on the first 6% of employee contributions. Our contributions under MCC’s Plan totaled $1.3 million, $1.3 million and $1.4 million for the years ended December 31, 2014, 2013 and 2012, respectively.

Deferred_Compensation

Deferred Compensation	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Deferred Compensation	11. DEFERRED COMPENSATION
	For the years ended December 31, 2014, 2013 and 2012, we recorded $0.8 million, $1.0 million and $1.2 million, respectively, of deferred compensation expense (formerly share-based compensation expense). These expenses represented the unvested stock options and restricted stock units under the former share-based compensation plans at their original grant-date fair value, modified for the right to receive $8.75 in cash. This amount also included the recognition of cash-based deferred compensation awarded in the years ended December 2014, 2013 and 2012 which has vesting attributes similar to the former share-based awards.

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	12. COMMITMENTS AND CONTINGENCIES
	Under various lease and rental agreements for offices, warehouses and computer terminals, we had rental expense of $5.0 million, $4.8 million and $4.6 million for the years ended December 31, 2014, 2013 and 2012, respectively. Future minimum annual rental payments as of December 31, 2014 are as follows (dollars in thousands):
	January 1, 2015 to December 31, 2015	$	1,822
	January 1, 2016 to December 31, 2016		1,696
	January 1, 2017 to December 31, 2017		1,334
	January 1, 2018 to December 31, 2018		918
	January 1, 2019 to December 31, 2019		563
	Thereafter		863
	Total	$	7,196
	In addition, we rent utility poles in our operations generally under short-term arrangements, but we expect these arrangements to recur. Total rental expense for utility poles was $4.2 million, $4.4 million and $4.6 million for the years ended December 31, 2014, 2013 and 2012, respectively.
	Letters of Credit
	As of December 31, 2014, $10.4 million of letters of credit were issued to various parties to secure our performance relating to insurance and franchise requirements. The fair value of such letters of credit was approximately book value.
	Legal Proceedings
	We are involved in various legal actions arising in the ordinary course of business. In the opinion of management, the ultimate disposition of these matters will not have a material adverse effect on our consolidated financial position, results of operations, cash flows or business.

Valuation_and_Qualifying_Accou

Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2014
Valuation and Qualifying Accounts [Abstract]
Valuation and Qualifying Accounts	VALUATION AND QUALIFYING ACCOUNTS
				Additions				Deductions
		Balance at		Charged to		Charged		Charged to		Charged		Balance at
		beginning		costs and		to other		costs and		to other		end of period
		of period		expenses		accounts		expenses		accounts
	December 31, 2012
	Allowance for doubtful accounts:
	Current receivables	$	1,149	$	5,748	$	—	$	4,014	$	—	$	2,883
	December 31, 2013
	Allowance for doubtful accounts:
	Current receivables	$	2,883	$	4,582	$	—	$	4,545	$	—	$	2,920
	December 31, 2014
	Allowance for doubtful accounts:
	Current receivables	$	2,920	$	3,269	$	—	$	3,132	$	—	$	3,057

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Basis of Preparation of Consolidated Financial Statements	Basis of Preparation of Consolidated Financial Statements
	The consolidated financial statements include the accounts of us and our subsidiaries. All significant intercompany transactions and balances have been eliminated. The preparation of the consolidated financial statements in conformity with generally accepted accounting principles in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The accounting estimates that require management’s most difficult and subjective judgments include: assessment and valuation of intangibles, accounts receivable allowance, useful lives of property, plant and equipment and capitalized labor. Actual results could differ from those and other estimates.
Reclassifications	Reclassifications
	Certain reclassifications have been made to prior year amounts to conform to the current year presentation.
Revenue Recognition	Revenue Recognition
	Video, HSD, phone and business services revenues are recognized when the services are provided to our customers. Credit risk is managed by disconnecting services to customers who are deemed to be delinquent. Installation revenues are recognized as customer connections are completed because installation revenues are less than direct installation costs. Advertising sales are recognized in the period that the advertisements are exhibited. Deposits and up-front fees collected from customers are recognized as deferred revenue until the earnings process is complete. Under the terms of our franchise agreements, we are required to pay local franchising authorities up to 5% of our gross revenues derived from providing video service. We normally pass these fees through to our customers. Because franchise fees are our obligation, we present them on a gross basis with a corresponding expense. Franchise fees reported on a gross basis amounted to approximately $21.7 million, $23.9 million and $24.7 million for the years ended December 31, 2014, 2013 and 2012, respectively. Franchise fees are reported in video revenue and included in selling, general and administrative expenses.
Allowance for Doubtful Accounts	Allowance for Doubtful Accounts
	The allowance for doubtful accounts represents our best estimate of probable losses in the accounts receivable balance. The allowance is based on the number of days outstanding, customer balances, recoveries, historical experience and other currently available information.
Concentration of Credit Risk	Concentration of Credit Risk
	Our accounts receivable are comprised of amounts due from customers in varying regions throughout the United States. Concentration of credit risk with respect to these receivables is limited due to the large number of customers comprising our customer base and their geographic dispersion. We invest our cash with high quality financial institutions.
Property, Plant and Equipment	Property, Plant and Equipment
	Property, plant and equipment are recorded at cost. Additions to property, plant and equipment generally include material, labor and indirect costs. Depreciation is calculated on a straight-line basis over the following useful lives:
	Buildings		40 years
	Leasehold improvements		Life of respective lease
	Cable systems and equipment and customer devices		5 to 20 years
	Vehicles		4-5 years
	Furniture, fixtures, and office equipment		5 years
	We capitalize improvements that extend asset lives and expense repairs and maintenance as incurred. At the time of retirements, write-offs, sales or other dispositions of property, the original cost and related accumulated depreciation are removed from the respective accounts and the gains or losses are included in depreciation and amortization expense in the consolidated statement of operations.
	We capitalize the costs associated with the construction of cable transmission and distribution facilities, new customer installations and indirect costs associated with our phone service. Costs include direct labor and material, as well as certain indirect costs including capitalized interest. We perform periodic evaluations of the estimates used to determine the amount and extent that such costs are capitalized. Any changes to these estimates, which may be significant, are applied in the period in which the evaluations were completed. The costs of disconnecting service at a customer’s dwelling or reconnecting to a previously installed dwelling are charged as expense in the period incurred. Costs associated with subsequent installations of additional services not previously installed at a customer’s dwelling are capitalized to the extent such costs are incremental and directly attributable to the installation of such additional services. See Note 3.
Capitalized Software Costs	Capitalized Software Costs
	We account for internal-use software development and related costs in accordance with ASC 350-40-Intangibles-Goodwill and Other: Internal-Use Software. Software development and other related costs consist of external and internal costs incurred in the application development stage to purchase and implement the software that will be used in our telephony business. Costs incurred in the development of application and infrastructure of the software is capitalized and will be amortized over our respective estimated useful life of 5 years. During the years ended December 31, 2014 and 2013, we capitalized approximately $0.1 million and $0.2 million, respectively, of software development costs. Capitalized software had a net book value of $1.5 million and $2.4 million as of December 31, 2014 and 2013, respectively.
	In connection with our detailed analysis of capitalized software costs in 2014, we identified an amount that required adjustment to our 2013 financial statement disclosures to properly reflect net book value of our capitalized software costs as of December 31, 2013. Accordingly, the 2013 disclosure has been revised to reflect the appropriate amount, which management believes is immaterial to prior periods, and to conform to the current year presentation. The revision decreased the net book value disclosed at December 31, 2013 by approximately $13.9 million. The revision had no impact on our previously reported net capitalized software which is reported as a component of property, plant and equipment, in our financial statements. This revision also had no impact on accumulated depreciation, results of operations or cash flows.
Marketing and Promotional Costs	Marketing and Promotional Costs
	Marketing and promotional costs are expensed as incurred and were $24.3 million, $22.6 million and $22.9 million for the years ended December 31, 2014, 2013 and 2012, respectively.
Intangible Assets	Intangible Assets
	Our cable systems operate under non-exclusive cable franchises, or franchise rights, granted by state and local governmental authorities for varying lengths of time. We acquired these cable franchises through acquisitions of cable systems and were accounted for using the purchase method of accounting. As of December 31, 2014, we held 493 franchises in areas located throughout the United States. The value of a franchise is derived from the economic benefits we receive from the right to solicit new customers and to market our products and services, including video, HSD and phone, in a specific market territory. We concluded that our franchise rights have an indefinite useful life since, among other things, there are no legal, regulatory, contractual, competitive, economic or other factors limiting the period over which these franchise rights contribute to our revenues and cash flows. Goodwill is the excess of the acquisition cost of an acquired entity over the fair value of the identifiable net assets acquired. In accordance with ASC 350 — Intangibles — Goodwill and Other (“ASC 350”), we do not amortize franchise rights and goodwill. Instead, such assets are tested annually for impairment or more frequently if impairment indicators arise.
	We follow the provisions of ASC 350 to test our goodwill and franchise rights for impairment. We assess the fair values of our reporting unit using the Excess Earnings Method of the Income Approach as our discounted cash flow (“DCF”) methodology, under which the fair value of cable franchise rights are determined in a direct manner. We employ the Multi-Period Excess Earnings Method to calculate the fair values of our cable franchise rights, using unobservable inputs (Level 3). This assessment involves significant judgment, including certain assumptions and estimates that determine future cash flow expectations and other future benefits, which are consistent with the expectations of buyers and sellers of cable systems in determining fair value. These assumptions and estimates include discount rates, estimated growth rates, terminal growth rates, comparable company data, revenues per customer, market penetration as a percentage of homes passed and operating margin. We also consider market transactions, market valuations, research analyst estimates and other valuations using multiples of operating income before depreciation and amortization to confirm the reasonableness of fair values determined by the DCF methodology. We also employ the Greenfield model to corroborate the fair values of our cable franchise rights determined under the In-use Excess Earnings DCF methodology. Significant impairment in value resulting in impairment charges may result if the estimates and assumptions used in the fair value determination change in the future. Such impairments, if recognized, could potentially be material.
	Based on the guidance outlined in ASC 350, we have determined that the unit of accounting or reporting unit, for testing goodwill and franchise rights is Mediacom Broadband. Comprising cable system clusters across several states, Mediacom Broadband is at the financial reporting level that is managed and reviewed by the corporate office (i.e., chief operating decision maker) including our determination as to how we allocate capital resources and utilize the assets. The reporting unit level also reflects the level at which the purchase method of accounting for our acquisitions was originally recorded.
	In accordance with ASC 350, we are required to determine goodwill impairment using a two-step process. The first step compares the fair value of a reporting unit with our carrying amount, including goodwill. If the fair value of the reporting unit exceeds our carrying amount, goodwill of the reporting unit is considered not impaired and the second step is unnecessary. If the carrying amount of a reporting unit exceeds our fair value, the second step is performed to measure the amount of impairment loss, if any. The second step compares the implied fair value of the reporting unit’s goodwill, calculated using the residual method, with the carrying amount of that goodwill. If the carrying amount of the goodwill exceeds the implied fair value, the excess is recognized as an impairment loss.
	The impairment test for our franchise rights and other intangible assets not subject to amortization consists of a comparison of the fair value of the intangible asset with its carrying value. If the carrying value of the intangible asset exceeds its fair value, the excess is recognized as an impairment loss.
	Since our adoption of ASC 350 in 2002, we have not recorded any impairments as a result of our impairment testing. We completed our most recent impairment test as of October 1, 2014, which reflected no impairment of our franchise rights, goodwill or other intangible assets.
	We could record impairments in the future if there are changes in the long-term fundamentals of our business, in general market conditions or in the regulatory landscape that could prevent us from recovering the carrying value of our long-lived intangible assets. The economic conditions affecting the U.S. economy, and how that may impact the fundamentals of our business, may have a negative impact on the fair values of the assets in our reporting unit.
	In accordance with Accounting Standards Update No. 2010-28 — When to Perform Step 2 of the Goodwill Impairment Test for Reporting Units with Zero or Negative Carrying Amounts (a consensus of the FASB Emerging Issues Task Force), as of October 1, 2014, we have evaluated whether there are any adverse qualitative factors surrounding our Mediacom Broadband reporting unit indicating that a goodwill impairment may exist. We do not believe that it is “more likely than not” that a goodwill impairment exists. As such, we have not performed Step 2 of the goodwill impairment test. As of December 31, 2014, the Mediacom Broadband reporting unit had a negative carrying amount, and as of December 31, 2013, the Mediacom Broadband reporting unit had a positive carrying amount.
	The following table details changes in the carrying value of goodwill for the years ended December 31, 2014 and 2013, respectively, (dollars in thousands):
	Balance—December 31, 2012	$	195,945
	Acquisitions		—
	Dispositions		—
	Balance—December 31, 2013	$	195,945
	Acquisitions		—
	Dispositions		—
	Balance—December 31, 2014	$	195,945
Segment Reporting	Segment Reporting
	ASC 280 — Segment Reporting (“ASC 280”) requires the disclosure of factors used to identify an enterprise’s reportable segments. Our operations are organized and managed on the basis of cable system clusters within our service area. Each cable system cluster derives revenues from the delivery of similar products and services to a customer base that is also similar. Each cable system cluster deploys similar technology to deliver our products and services, operates within a similar regulatory environment and has similar economic characteristics. Management evaluated the criteria for aggregation under ASC 280 and believes that we meet each of the respective criteria set forth. Accordingly, management has identified broadband services as our one reportable segment.
Accounting for Derivative Instruments	Accounting for Derivative Instruments
	We account for derivative instruments in accordance with ASC 815 — Derivatives and Hedging. These pronouncements require that all derivative instruments be recognized on the balance sheet at fair value. We enter into interest rate exchange agreements to fix the interest rate on a portion of our variable interest rate debt to reduce the potential volatility in our interest expense that would otherwise result from changes in market interest rates. Our derivative instruments are recorded at fair value and are included in other current assets, other assets and other liabilities of our consolidated balance sheet. Our accounting policies for these instruments are based on whether they meet our criteria for designation as hedging transactions, which include the instrument’s effectiveness, risk reduction and, in most cases, a one-to-one matching of the derivative instrument to our underlying transaction. Gains and losses from changes in fair values of derivatives that are not designated as hedges for accounting purposes are recognized in the consolidated statement of operations. We have no derivative financial instruments designated as hedges. Therefore, changes in fair value for the respective periods were recognized in the consolidated statement of operations.
Accounting for Asset Retirement	Accounting for Asset Retirement
	We adopted ASC 410 — Asset Retirement Obligations (“ASC 410”), on January 1, 2003. ASC 410 addresses financial accounting and reporting for obligations associated with the retirement of tangible long-lived assets and the associated asset retirement costs. We reviewed our asset retirement obligations to determine the fair value of such liabilities and if a reasonable estimate of fair value could be made. This entailed the review of leases covering tangible long-lived assets as well as our rights-of-way under franchise agreements. Certain of our franchise agreements and leases contain provisions that require restoration or removal of equipment if the franchises or leases are not renewed. Based on historical experience, we expect to renew our franchise or lease agreements. In the unlikely event that any franchise or lease agreement is not expected to be renewed, we would record an estimated liability. However, in determining the fair value of our asset retirement obligation under our franchise agreements, consideration will be given to the Cable Communications Policy Act of 1984, which generally entitles the cable operator to the “fair market value” for the cable system covered by a franchise, if renewal is denied and the franchising authority acquires ownership of the cable system or effects a transfer of the cable system to another person. Changes in these assumptions based on future information could result in adjustments to estimated liabilities.
	Upon adoption of ASC 410, we determined that in certain instances, we are obligated by contractual terms or regulatory requirements to remove facilities or perform other remediation activities upon the retirement of our assets. We initially recorded a $1.8 million asset in property, plant and equipment and a corresponding liability of $1.8 million. As of both December 31, 2014 and 2013, the corresponding asset, net of accumulated amortization, was $0.
Accounting for Long-Lived Assets	Accounting for Long-Lived Assets
	In accordance with ASC 360 — Property, Plant and Equipment, we periodically evaluate the recoverability and estimated lives of our long-lived assets, including property and equipment and intangible assets subject to amortization, whenever events or changes in circumstances indicate that the carrying amount may not be recoverable or the useful life has changed. The measurement for such impairment loss is based on the fair value of the asset, typically based upon the future cash flows discounted at a rate commensurate with the risk involved. Unless presented separately, the loss is included as a component of either depreciation expense or amortization expense, as appropriate.
Programming Costs	Programming Costs
	We have various fixed-term carriage contracts to obtain programming for our cable systems from content suppliers whose compensation is generally based on a fixed monthly fee per customer. These programming contracts are subject to negotiated renewal. Programming costs are recognized when we distribute the related programming. These programming costs are usually payable each month based on calculations performed by us and are subject to adjustments based on the results of periodic audits by the content suppliers. Historically, such audit adjustments have been immaterial to our total programming costs. Some content suppliers offer financial incentives to support the launch of a channel and ongoing marketing support. When such financial incentives are received, we defer them within non-current liabilities in our consolidated balance sheets and recognize such amounts as a reduction of programming costs (which are a component of service costs in the consolidated statement of operations) over the carriage term of the programming contract.
Recent Accounting Pronouncements	Recent Accounting Pronouncements
	In December 2013, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update No. 2013-12 (“ASU 2013-12”) – Definition of a Public Business Entity. ASU 2013-12 defines a public business entity to be used in considering the scope of new financial guidance and identifies whether the guidance does or does not apply to public business entities. The Accounting Standards Codification includes multiple definitions of the terms nonpublic entity and public entity. ASU 2013-12 states that an entity that is required by the SEC to file or furnish financial statements with the SEC, or does file or furnish financial statements with the SEC, is considered a public business entity. There is no effective date for ASU 2013-12. We adopted ASU 2013-12 as of December 31, 2013. We are deemed to be a public entity according to this guidance.
	In May 2014, the FASB issued ASU No. 2014-09 (“ASU 2014-09”) – Revenue from Contracts with Customers. The guidance states that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. An entity should also disclose sufficient information to enable users of financial statements to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. This guidance supersedes most industry-specific guidance, including Statement of Financial Accounting Standards No. 51 – Financial Reporting by Cable Television Companies. ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early application is not permitted. We have not completed our evaluation of this new guidance to determine its impact on our financial statements, financial disclosures and our method of adoption.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Summary of Estimated Useful Lives	Depreciation is calculated on a straight-line basis over the following useful lives:
	Buildings		40 years
	Leasehold improvements		Life of respective lease
	Cable systems and equipment and customer devices		5 to 20 years
	Vehicles		4-5 years
	Furniture, fixtures, and office equipment		5 years
Summary of Changes in Carrying Value of Goodwill	The following table details changes in the carrying value of goodwill for the years ended December 31, 2014 and 2013, respectively, (dollars in thousands):
	Balance—December 31, 2012	$	195,945
	Acquisitions		—
	Dispositions		—
	Balance—December 31, 2013	$	195,945
	Acquisitions		—
	Dispositions		—
	Balance—December 31, 2014	$	195,945

Property_Plant_and_Equipment_T

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Components of Property, Plant and Equipment	As of December 31, 2014 and 2013, property, plant and equipment consisted of (dollars in thousands):
		December 31,			December 31,
		2014			2013
	Cable systems, equipment and customer devices	$	2,143,668		$	2,033,815
	Furniture, fixtures and office equipment		42,278			44,689
	Vehicles		40,362			40,085
	Buildings and leasehold improvements		34,720			33,512
	Land and land improvements		7,998			8,139
	Property, plant and equipment, gross	$	2,269,026		$	2,160,240
	Accumulated depreciation		(1,493,705	)		(1,368,697	)
	Property, plant and equipment, net	$	775,321		$	791,543

Fair_Value_Tables

Fair Value (Tables)	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair Value of Interest Rate Swap Liabilities	As of December 31, 2014, our interest rate swap liabilities, net, were valued at $11.0 million using Level 2 inputs, as follows (dollars in thousands):
		Fair Value as of December 31, 2014
		Level 1		Level 2		Level 3		Total
	Assets
	Interest rate exchange agreements	$	—	$	—	$	—	$	—
	Liabilities
	Interest rate exchange agreements	$	—	$	11,049	$	—	$	11,049
	Interest rate exchange agreements—liabilities, net	$	—	$	11,049	$	—	$	11,049
	As of December 31, 2013, our interest rate swap liabilities, net, were valued at $34.3 million using Level 2 inputs, as follows (dollars in thousands):
		Fair Value as of December 31, 2013
		Level 1		Level 2		Level 3		Total
	Assets
	Interest rate exchange agreements	$	—	$	—	$	—	$	—
	Liabilities
	Interest rate exchange agreements	$	—	$	34,275	$	—	$	34,275
	Interest rate exchange agreements—liabilities, net	$	—	$	34,275	$	—	$	34,275

Accounts_Payable_Accrued_Expen1

Accounts Payable, Accrued Expenses and Other Current Liabilities (Tables)	12 Months Ended
	Dec. 31, 2014
Payables and Accruals [Abstract]
Summary of Accounts Payable, Accrued Expenses and Other Current Liabilities	Accounts payable, accrued expenses and other current liabilities consisted of the following as of December 31, 2014 and 2013 (dollars in thousands):
			December 31,		December 31,
			2014		2013
	Accounts payable - trade		$	33,474	$	30,157
	Accrued programming costs			25,680		25,482
	Accrued taxes and fees			15,072		16,731
	Accrued payroll and benefits			14,514		17,155
	Liabilities under interest rate exchange agreements			11,049		24,475
	Advance customer payments			9,387		8,775
	Accrued service costs			7,922		8,076
	Accrued interest			7,451		5,902
	Bank overdrafts (1)			5,025		4,901
	Accrued property, plant and equipment			3,901		4,216
	Accrued telecommunications costs			754		1,702
	Other accrued expenses			10,366		9,035
	Accounts payable, accrued expenses and other current liabilities		$	144,595	$	156,607
	(1)	Bank overdrafts represented outstanding checks in excess of funds on deposit at our disbursement accounts. We transfer funds from our depository accounts to our disbursement accounts upon daily notification of checks presented for payment. Changes in bank overdrafts are reported in “other financing activities” in our Consolidated Statement of Cash Flows.

Debt_Tables

Debt (Tables)	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Summary of Debt	As of December 31, 2014 and 2013, our outstanding debt consisted of (dollars in thousands):
		December 31,		December 31,
		2014		2013
	Bank credit facility	$	1,457,000	$	1,608,000
	5  1⁄2% senior notes due 2021		200,000		—
	6  3⁄8% senior notes due 2023		300,000		300,000
	Total debt	$	1,957,000	$	1,908,000
	Less: current portion		13,500		16,000
	Total long-term debt	$	1,943,500	$	1,892,000
Fair Values of Senior Notes and Outstanding Debt under Credit Facility	As of December 31, 2014 and 2013, the fair values of our senior notes and outstanding debt under the credit facility (which were calculated based upon market prices of such issuances in an active market when available) were as follows (dollars in thousands):
		December 31,
		2014		2013
	5 1⁄2% senior notes due 2021	$	202,000	$	—
	6 3⁄8% senior notes due 2023		309,000		308,250
	Total senior notes	$	511,000	$	308,250
	Bank credit facility	$	1,426,126	$	1,602,472
Scheduled Maturities of All Debt Outstanding	The scheduled maturities of all debt outstanding as of December 31, 2014 are as follows (dollars in thousands):
		Bank Credit Facility				Senior
		Revolving Credit		Term Loans		Notes		Total
	January 1, 2015 to December 31, 2015	$	—	$	13,500	$	—	$	13,500
	January 1, 2016 to December 31, 2016		—		13,500		—		13,500
	January 1, 2017 to December 31, 2017		—		254,750		—		254,750
	January 1, 2018 to December 31, 2018		—		11,000		—		11,000
	January 1, 2019 to December 31, 2019		123,250		11,000		—		134,250
	Thereafter		—		1,030,000		500,000		1,530,000
	Total	$	123,250	$	1,333,750	$	500,000	$	1,957,000

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Summary of Future Minimum Annual Rental Payments	Future minimum annual rental payments as of December 31, 2014 are as follows (dollars in thousands):
	January 1, 2015 to December 31, 2015	$	1,822
	January 1, 2016 to December 31, 2016		1,696
	January 1, 2017 to December 31, 2017		1,334
	January 1, 2018 to December 31, 2018		918
	January 1, 2019 to December 31, 2019		563
	Thereafter		863
	Total	$	7,196

Organization_Additional_Inform

Organization - Additional Information (Detail) (USD $)	Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Amount due from affiliate by subsidiary	$100

Summary_of_Significant_Account3

Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	0 Months Ended	12 Months Ended
	Oct. 01, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
		Segment
		Franchise
Finite-Lived Intangible Assets [Line Items]
Percentage of gross revenue required to pay franchise fees		5.00%
Franchise fees		$21,700,000	$23,900,000	$24,700,000
Net book value of capitalized software		1,500,000	2,400,000
Capitalized computer software, period decrease			13,900,000
Marketing and promotional costs expensed		24,300,000	22,600,000	22,900,000
Number of franchises		493
Impairment loss of goodwill	0
Impairment loss of other intangible assets	0
Number of reportable segment		1
Asset in property, plant and equipment		2,259,413,000	2,273,845,000
Liability in property, plant and equipment		2,140,096,000	2,110,890,000
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Software development costs		100,000	200,000
Franchise Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment loss of franchise rights	0
Software Development [Member]
Finite-Lived Intangible Assets [Line Items]
Other finite-lived intangible assets useful lives		5 years
Property, Plant and Equipment, Other Types [Member]
Finite-Lived Intangible Assets [Line Items]
Asset in property, plant and equipment		1,800,000
Liability in property, plant and equipment		1,800,000
Accumulated depreciation		$0	$0

Summary_of_Significant_Account4

Summary of Significant Accounting Policies - Summary of Estimated Useful Lives (Detail)	12 Months Ended
	Dec. 31, 2014
Buildings [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	40 years
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Leasehold improvements	Life of respective lease
Cable Systems, Equipment and Customer Devices [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	5 years
Cable Systems, Equipment and Customer Devices [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	20 years
Vehicles [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	4 years
Vehicles [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	5 years
Furniture, Fixtures and Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	5 years

Summary_of_Significant_Account5

Summary of Significant Accounting Policies - Summary of Changes in Carrying Value of Goodwill (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Goodwill [Roll Forward]
Beginning Balance	$195,945	$195,945
Acquisitions	0	0
Dispositions	0	0
Ending Balance	$195,945	$195,945

Property_Plant_and_Equipment_C

Property, Plant and Equipment - Components of Property, Plant and Equipment (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$2,269,026	$2,160,240
Accumulated depreciation	-1,493,705	-1,368,697
Property, plant and equipment, net	775,321	791,543
Cable Systems, Equipment and Customer Devices [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,143,668	2,033,815
Furniture, Fixtures and Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	42,278	44,689
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	40,362	40,085
Buildings and Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	34,720	33,512
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$7,998	$8,139

Property_Plant_and_Equipment_A

Property, Plant and Equipment - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Abstract]
Depreciation expense	$153,500,000	$156,400,000	$150,700,000
Property under capitalized leases	0	0	0
Interest costs	101,700,000	97,300,000	114,200,000
Interest costs capitalized	$1,300,000	$1,100,000	$1,600,000

Fair_Value_Additional_Informat

Fair Value - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Current liability in accounts payable, accrued expenses and other current liabilities	$11,000,000	$24,500,000
Accumulated long-term liability in other non-current liabilities	0	9,800,000
Net gains on derivatives	23,200,000	22,800,000	6,200,000
Interest Rate Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities, net	11,049,000	34,275,000
Derivative assets, recorded	0	0
Level 2 [Member] | Interest Rate Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities, net	$11,049,000	$34,275,000

Fair_Value_Fair_Value_of_Inter

Fair Value - Fair Value of Interest Rate Swap Liabilities (Detail) (Interest Rate Swaps [Member], USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	$0	$0
Liabilities	11,049	34,275
Liabilities, net	11,049	34,275
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	0
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	0
Liabilities	11,049	34,275
Liabilities, net	11,049	34,275
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	$0	$0

Accounts_Payable_Accrued_Expen2

Accounts Payable, Accrued Expenses and Other Current Liabilities - Summary of Accounts Payable, Accrued Expenses and Other Current Liabilities (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Payables and Accruals [Abstract]
Accounts payable - trade	$33,474	$30,157
Accrued programming costs	25,680	25,482
Accrued taxes and fees	15,072	16,731
Accrued payroll and benefits	14,514	17,155
Liabilities under interest rate exchange agreements	11,049	24,475
Advance customer payments	9,387	8,775
Accrued service costs	7,922	8,076
Accrued interest	7,451	5,902
Bank overdrafts	5,025	4,901
Accrued property, plant and equipment	3,901	4,216
Accrued telecommunications costs	754	1,702
Other accrued expenses	10,366	9,035
Accounts payable, accrued expenses and other current liabilities	$144,595	$156,607

Debt_Summary_of_Debt_Detail

Debt - Summary of Debt (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Debt Instrument [Line Items]
Total debt	$1,957,000	$1,908,000
Less: current portion	13,500	16,000
Total long-term debt	1,943,500	1,892,000
Total	1,957,000	1,908,000
5 1/2% Senior Notes Due 2021 [Member]
Debt Instrument [Line Items]
Total debt	200,000
Total	200,000
6 3/8% Senior Notes Due 2023 [Member]
Debt Instrument [Line Items]
Total debt	300,000	300,000
Total	300,000	300,000
Bank Credit Facility [Member]
Debt Instrument [Line Items]
Total debt	1,457,000	1,608,000
Total	$1,457,000	$1,608,000

Debt_Summary_of_Debt_Parenthet

Debt - Summary of Debt (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2014
5 1/2% Senior Notes Due 2021 [Member]
Debt Instrument [Line Items]
Debt instrument, Interest rate	5.50%
Debt instrument, Maturity	2021
6 3/8% Senior Notes Due 2023 [Member]
Debt Instrument [Line Items]
Debt instrument, Interest rate	6.38%
Debt instrument, Maturity	2023

Debt_Additional_Information_De

Debt - Additional Information (Detail) (USD $)	12 Months Ended			0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Mar. 17, 2014	Apr. 28, 2012	Oct. 10, 2014	Aug. 28, 2012	29-May-13	Jun. 20, 2014	Dec. 09, 2014
Line of Credit Facility [Line Items]
Financing costs	$12,480,000	$5,284,000	$13,316,000
Outstanding senior notes	500,000,000
Proceeds from issuance of senior notes	200,000,000		300,000,000
Original issue discount, as recorded in other assets, net	8,700,000	8,200,000
Interest Rate Swaps [Member]
Line of Credit Facility [Line Items]
Revolving credit commitment outstanding	500,000,000
Expiration date of revolving credit commitments	31-Dec-15
Interest rate on borrowings	2.60%
Weighted average interest rate on outstanding borrowings	4.10%
Bank Credit Facility [Member]
Line of Credit Facility [Line Items]
Revolving credit commitment outstanding	1,590,000,000
Unused revolving credit commitments	122,300,000
5 1/2% Senior Notes Due 2021 [Member]
Line of Credit Facility [Line Items]
Original principal amount				200,000,000
Outstanding senior notes	200,000,000
Senior notes expiration date	Apr-21
Proceeds from issuance of senior notes				196,200,000
6 3/8% Senior Notes Due 2023 [Member]
Line of Credit Facility [Line Items]
Original principal amount					300,000,000
Outstanding senior notes	300,000,000
Senior notes expiration date	Apr-23
Proceeds from issuance of senior notes					294,500,000
Loans Payable [Member]
Line of Credit Facility [Line Items]
Revolving credit commitment outstanding	123,300,000
Minimum [Member]
Line of Credit Facility [Line Items]
Rate of commitment fees on the unused portion of revolving credit commitments						0.38%
Required debt to operating cash flow	1
Minimum [Member] | Bank Credit Facility [Member]
Line of Credit Facility [Line Items]
Leverage ratio	1
Interest coverage ratio	1
Maximum [Member]
Line of Credit Facility [Line Items]
Rate of commitment fees on the unused portion of revolving credit commitments						0.50%
Required debt to operating cash flow	8.5
Maximum [Member] | Bank Credit Facility [Member]
Line of Credit Facility [Line Items]
Leverage ratio	5
Interest coverage ratio	2
LIBOR [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Floating rate margin						2.00%
LIBOR [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Floating rate margin						2.75%
Prime Rate [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Floating rate margin						1.00%
Prime Rate [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Floating rate margin						1.75%
Term Loan G [Member]
Line of Credit Facility [Line Items]
Original principal amount							200,000,000
Quarterly reductions of original principal amount							500,000
Rate of quarterly reductions of original principal amount							0.25%
Final payment at maturity representing the original principal amount							185,500,000
Rate of Final payment at maturity representing the original principal amount							92.75%
Term Loan G [Member] | Bank Credit Facility [Member]
Line of Credit Facility [Line Items]
Revolving credit commitment outstanding	195,500,000
Expiration date of revolving credit commitments	20-Jan-20
Term Loan G [Member] | LIBOR [Member]
Line of Credit Facility [Line Items]
Floating rate margin							3.00%
Term Loan G [Member] | LIBOR [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Floating rate margin							1.00%
Term Loan G [Member] | Prime Rate [Member]
Line of Credit Facility [Line Items]
Floating rate margin							2.00%
Term Loan G [Member] | Prime Rate [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Floating rate margin							2.00%
Term Loan H [Member]
Line of Credit Facility [Line Items]
Original principal amount								600,000,000
Quarterly reductions of original principal amount								1,500,000
Rate of quarterly reductions of original principal amount								0.25%
Final payment at maturity representing the original principal amount								555,000,000
Rate of Final payment at maturity representing the original principal amount								92.50%
Term Loan H [Member] | Bank Credit Facility [Member]
Line of Credit Facility [Line Items]
Revolving credit commitment outstanding	591,000,000
Expiration date of revolving credit commitments	29-Jan-21
Term Loan H [Member] | LIBOR [Member]
Line of Credit Facility [Line Items]
Floating rate margin								2.50%
Term Loan H [Member] | LIBOR [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Floating rate margin								0.75%
Term Loan H [Member] | Prime Rate [Member]
Line of Credit Facility [Line Items]
Floating rate margin								1.50%
Term Loan H [Member] | Prime Rate [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Floating rate margin								1.75%
Term Loan I [Member]
Line of Credit Facility [Line Items]
Original principal amount									250
Quarterly reductions of original principal amount									600,000
Rate of quarterly reductions of original principal amount									0.25%
Final payment at maturity representing the original principal amount									243,100,000
Rate of Final payment at maturity representing the original principal amount									97.25%
Financing costs									3,200,000
Net proceeds from term loan									246,800,000
Term Loan I [Member] | Bank Credit Facility [Member]
Line of Credit Facility [Line Items]
Revolving credit commitment outstanding	248,800,000
Expiration date of revolving credit commitments	30-Jun-17
Term Loan I [Member] | LIBOR [Member]
Line of Credit Facility [Line Items]
Floating rate margin									2.50%
Term Loan I [Member] | Prime Rate [Member]
Line of Credit Facility [Line Items]
Floating rate margin									1.50%
Term Loan J [Member]
Line of Credit Facility [Line Items]
Original principal amount									300,000,000
Quarterly reductions of original principal amount									800,000
Rate of quarterly reductions of original principal amount									0.25%
Final payment at maturity representing the original principal amount									279,800,000
Rate of Final payment at maturity representing the original principal amount									93.25%
Financing costs									3,400,000
Net proceeds from term loan									296,600,000
Term Loan J [Member] | Bank Credit Facility [Member]
Line of Credit Facility [Line Items]
Revolving credit commitment outstanding	298,500,000
Expiration date of revolving credit commitments	30-Jun-21
Term Loan J [Member] | LIBOR [Member]
Line of Credit Facility [Line Items]
Floating rate margin									2.75%
Term Loan J [Member] | LIBOR [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Floating rate margin									0.75%
Term Loan J [Member] | LIBOR [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Floating rate margin									3.00%
Term Loan J [Member] | Prime Rate [Member]
Line of Credit Facility [Line Items]
Floating rate margin									1.75%
Term Loan J [Member] | Prime Rate [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Floating rate margin									1.75%
Term Loan J [Member] | Prime Rate [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Floating rate margin									2.00%
Revolving Credit Commitments at Present [Member] | Bank Credit Facility [Member]
Line of Credit Facility [Line Items]
Revolving credit commitments	256,000,000
Expiration date of revolving credit commitments	10-Oct-19
Incremental New Revolving Credit Commitments [Member] | Bank Credit Facility [Member]
Line of Credit Facility [Line Items]
Revolving credit commitments						216,000,000
Expiration date of revolving credit commitments	10-Oct-19
Additional revolving credit commitments										40,000,000
Letter of Credit [Member]
Line of Credit Facility [Line Items]
Revolving credit commitment outstanding	10,400,000
Term Loan D [Member]
Line of Credit Facility [Line Items]
Original principal amount									$542,500,000

Debt_Fair_Values_of_Senior_Not

Debt - Fair Values of Senior Notes and Outstanding Debt under Credit Facility (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Debt Instrument [Line Items]
Total senior notes	$511,000	$308,250
Bank Credit Facility [Member]
Debt Instrument [Line Items]
Total senior notes	1,426,126	1,602,472
5 1/2% Senior Notes Due 2021 [Member]
Debt Instrument [Line Items]
Total senior notes	202,000
6 3/8% Senior Notes Due 2023 [Member]
Debt Instrument [Line Items]
Total senior notes	$309,000	$308,250

Debt_Fair_Values_of_Senior_Not1

Debt - Fair Values of Senior Notes and Outstanding Debt under Credit Facility (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2014
5 1/2% Senior Notes Due 2021 [Member]
Debt Instrument [Line Items]
Debt instrument, Interest rate	5.50%
Debt instrument, Maturity	2021
6 3/8% Senior Notes Due 2023 [Member]
Debt Instrument [Line Items]
Debt instrument, Interest rate	6.38%
Debt instrument, Maturity	2023

Debt_Scheduled_Maturities_of_A

Debt - Scheduled Maturities of All Debt Outstanding (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Debt Instrument [Line Items]
January 1, 2015 to December 31, 2015	$13,500
January 1, 2016 to December 31, 2016	13,500
January 1, 2017 to December 31, 2017	254,750
January 1, 2018 to December 31, 2018	11,000
January 1, 2019 to December 31, 2019	134,250
Thereafter	1,530,000
Total	1,957,000	1,908,000
Senior Notes [Member]
Debt Instrument [Line Items]
Thereafter	500,000
Total	500,000
Bank Credit Facility [Member]
Debt Instrument [Line Items]
Total	1,457,000	1,608,000
Bank Credit Facility [Member] | Revolving Credit [Member]
Debt Instrument [Line Items]
January 1, 2019 to December 31, 2019	123,250
Total	123,250
Bank Credit Facility [Member] | Term Loans [Member]
Debt Instrument [Line Items]
January 1, 2015 to December 31, 2015	13,500
January 1, 2016 to December 31, 2016	13,500
January 1, 2017 to December 31, 2017	254,750
January 1, 2018 to December 31, 2018	11,000
January 1, 2019 to December 31, 2019	11,000
Thereafter	1,030,000
Total	$1,333,750

Preferred_Members_Interest_Add

Preferred Members' Interest - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jul. 31, 2001
Equity Method Investments and Joint Ventures [Abstract]
Preferred equity investment				$150
Percentage of annual cash dividend on preferred equity investment	12.00%
Cash dividends on preferred membership interest	$18	$18	$18

Members_Deficit_Equity_Additio

Member's (Deficit) Equity - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Equity [Abstract]
Capital distributions to parent	$163,300	$29,000	$121,825
Received capital contributions from parent			$114,500

Related_Party_Transactions_Add

Related Party Transactions - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Related Party Transaction [Line Items]
Management fees charged by MCC	$17,650	$16,600	$14,335
Management Fees [Member] | MCC [Member] | Maximum [Member] | Operating Revenues [Member]
Related Party Transaction [Line Items]
Rate of annual gross operating revenues of our operating subsidiaries	4.00%

Employee_Benefit_Plans_Additio

Employee Benefit Plans - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Percentage of employee contribution	15.00%
Present matching contribution of employee	50.00%
Percentage of employee contribution	6.00%
Total contribution	$1.30	$1.30	$1.40

Deferred_Compensation_Addition

Deferred Compensation - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Recorded deferred compensation expense	$0.80	$1	$1.20
Cash received	$8.75

Commitments_and_Contingencies_1

Commitments and Contingencies - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract]
Rental expense	$5	$4.80	$4.60
Total rental expense for utility poles	4.2	4.4	4.6
Letters of credit issued	$10.40

Commitments_and_Contingencies_2

Commitments and Contingencies - Summary of Future Minimum Annual Rental Payments (Detail) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Commitments and Contingencies Disclosure [Abstract]
January 1, 2015 to December 31, 2015	$1,822
January 1, 2016 to December 31, 2016	1,696
January 1, 2017 to December 31, 2017	1,334
January 1, 2018 to December 31, 2018	918
January 1, 2019 to December 31, 2019	563
Thereafter	863
Total	$7,196

Schedule_II_Valuation_and_Qual

Schedule II - Valuation and Qualifying Accounts (Detail) (Current Receivables [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current Receivables [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	$2,920	$2,883	$1,149
Additions, Charged to costs and expenses	3,269	4,582	5,748
Additions, Charged to other accounts	0	0	0
Deductions, Charged to costs and expenses	3,132	4,545	4,014
Deductions, Charged to other accounts	0	0	0
Balance at end of period	$3,057	$2,920	$2,883