Credit agreement covenant fixed charge coverage ratio.

No definition available.

Name:	comm_CreditAgreementCovenantFixedChargeCoverageRatio
Namespace Prefix:	comm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt covenant fixed charge coverage ratio, triggering event, minimum percentage on borrowings base.

+ References

No definition available.

+ Details

Name:	comm_DebtCovenantFixedChargeCoverageRatioTriggeringEventMinimumPercentageOnBorrowingsBase
Namespace Prefix:	comm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt instrument amount redeemed.

+ References

No definition available.

+ Details

Name:	comm_DebtInstrumentAmountRedeemed
Namespace Prefix:	comm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Debt instrument maturity year.

+ References

No definition available.

+ Details

Name:	comm_DebtInstrumentMaturityYear
Namespace Prefix:	comm_
Data Type:	xbrli:gYearItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt instrument, repayment percentage on excess cash flow from refinancing indebtedness.

+ References

No definition available.

+ Details

Name:	comm_DebtInstrumentRepaymentPercentageOnExcessCashFlowFromRefinancingIndebtedness
Namespace Prefix:	comm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt issuance cost Write-Off.

+ References

No definition available.

+ Details

Name:	comm_DebtIssuanceCostWriteOff
Namespace Prefix:	comm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Incremental borrowings criteria percentage of consolidated EBITDA.

+ References

No definition available.

+ Details

Name:	comm_IncrementalBorrowingsCriteriaPercentageOfConsolidatedEBITDA
Namespace Prefix:	comm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Incremental borrowings maximum term loan facility on principal amount

+ References

No definition available.

+ Details

Name:	comm_IncrementalBorrowingsMaximumTermLoanFacilityOnPrincipalAmount
Namespace Prefix:	comm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Letter of credit fronting fee.

+ References

No definition available.

+ Details

Name:	comm_LetterOfCreditFrontingFee
Namespace Prefix:	comm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of credit facility maturity month and year.

+ References

No definition available.

+ Details

Name:	comm_LineOfCreditFacilityMaturityMonthAndYear
Namespace Prefix:	comm_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of credit facility unused capacity equal to or greater than fifty percent of aggregate commitments percentage.

+ References

No definition available.

+ Details

Name:	comm_LineOfCreditFacilityUnusedCapacityEqualToOrGreaterThanFiftyPercentOfAggregateCommitmentsPercentage
Namespace Prefix:	comm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of credit facility unused capacity less than fifty percent of aggregate commitments percentage.

+ References

No definition available.

+ Details

Name:	comm_LineOfCreditFacilityUnusedCapacityLessThanFiftyPercentOfAggregateCommitmentsPercentage
Namespace Prefix:	comm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Senior secured term loan, maturity period.

+ References

No definition available.

+ Details

Name:	comm_SeniorSecuredTermLoanMaturityPeriod
Namespace Prefix:	comm_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of amortization expense attributable to debt issuance costs.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(8))
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399

+ Details

Name:	us-gaap_AmortizationOfFinancingCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(11))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(12))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

+ Details

Name:	us-gaap_Assets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13531-108611

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13537-108611

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

+ Details

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the total principal payments made during the annual reporting period.

+ References

+ Details

Name:	us-gaap_DebtInstrumentAnnualPrincipalPayment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentDescriptionOfVariableRateBasis
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of the frequency of periodic payments (monthly, quarterly, annual).

+ References

+ Details

Name:	us-gaap_DebtInstrumentFrequencyOfPeriodicPayment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

+ Details

Name:	us-gaap_DebtInstrumentMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

End date of debt instrument redemption period, in CCYY-MM-DD format.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph e
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

+ Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodEndDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

+ Details

Name:	us-gaap_DebtInstrumentRedemptionPricePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of principal amount of debt redeemed.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after accumulated amortization, of debt discount.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentUnamortizedDiscount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the charge against earnings during the period for commitment fees and debt issuance expenses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

+ Details

Name:	us-gaap_DebtRelatedCommitmentFeesAndDebtIssuanceCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount, after accumulated amortization, of debt issuance costs classified as noncurrent. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DeferredFinanceCostsNoncurrentNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.

+ References

+ Details

Name:	us-gaap_Liabilities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

+ Details

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of the fee for available but unused credit capacity under the credit facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityCommitmentFeeAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Identification of whether the entity has been in compliance with any credit facility debt covenants during the period.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LineOfCreditFacilityCovenantCompliance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of the terms of a credit facility arrangement. Terms typically include interest rate, collateral required, guarantees required, repayment requirements, and restrictions on use of assets and activities of the entity.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityDescription
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

+ Details

Name:	us-gaap_LongTermDebtCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Weighted average interest rate of long-term debt outstanding calculated at point in time.

+ References

No definition available.

+ Details

Name:	us-gaap_LongtermDebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585

+ Details

Name:	us-gaap_ProceedsFromLongTermLinesOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585

+ Details

Name:	us-gaap_RepaymentsOfLongTermLinesOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period.

+ References

+ Details

Name:	us-gaap_RepaymentsOfSeniorDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

+ Details

Name:	us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_SecuredDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

+ References

+ Details

Name:	us-gaap_SeniorNotes
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

+ References

+ Details

Name:	us-gaap_WriteOffOfDeferredDebtIssuanceCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=comm_NonGuarantorSubsidiariesConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_AssetsTotalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_LiabilitiesTotalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueNetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_BaseRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_EurodollarMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=comm_SeniorNoteTwoThousandTwentyOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=comm_SeniorNotesDueMarchOneTwoThousandTwentySevenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=us-gaap_DebtInstrumentRedemptionPeriodOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=us-gaap_DebtInstrumentRedemptionPeriodTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=comm_RedemptionUnderCertainCircumstancesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=comm_DebtHolderMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=comm_RedemptionUponCertainChangeOfControlEventsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=comm_SeniorSecuredNotesDueTwoThousandTwentySixMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=comm_SeniorSecuredNotesDueTwoThousandTwentyFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=comm_SeniorSecuredCreditFacilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=comm_SeniorSecuredTermLoanDueAprilTwoThousandTwentySixMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=comm_BaseRateOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=comm_ScenarioPlanOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=comm_BaseRateTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=comm_BaseRateThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=comm_BaseRateFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=comm_BaseRateFiveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=comm_ScenarioPlanTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=comm_AssetBasedRevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Financing - Additional Information (Detail) - USD ($)			1 Months Ended	3 Months Ended			6 Months Ended	9 Months Ended		12 Months Ended
Financing - Additional Information (Detail) - USD ($)	Apr. 04, 2019	Feb. 19, 2019	Aug. 31, 2019	Sep. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2019	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Debt Instrument [Line Items]
Debt issuance cost Write-Off			$ 900,000
Current portion of long term debt				$ 32,000,000.0				$ 32,000,000.0
Excess cash flow percentage	50.00%
Total assets				15,173,800,000				15,173,800,000		$ 6,630,500,000
Total liabilities				12,962,700,000				12,962,700,000		$ 4,873,700,000
Net sales				$ 2,380,200,000		$ 1,150,400,000		$ 6,046,400,000	$ 3,510,800,000
Weighted average effective interest rate				6.18%				6.18%		5.73%
Non Guarantor Subsidiaries Concentration Risk [Member]
Debt Instrument [Line Items]
Total assets				$ 4,902,000,000				$ 4,902,000,000		$ 2,354,000,000
Total liabilities				170,000,000				170,000,000		$ 454,000,000
Net sales				$ 399,000,000		$ 453,000,000		$ 1,770,000,000	$ 1,388,000,000
Assets, Total [Member] \| Non Guarantor Subsidiaries Concentration Risk [Member]
Debt Instrument [Line Items]
Concentration risk percentage								32.00%		36.00%
Liabilities, Total [Member] \| Non Guarantor Subsidiaries Concentration Risk [Member]
Debt Instrument [Line Items]
Concentration risk percentage								1.00%		9.00%
Sales Revenue, Net [Member] \| Non Guarantor Subsidiaries Concentration Risk [Member]
Debt Instrument [Line Items]
Concentration risk percentage				17.00%		39.00%		29.00%	40.00%
LIBOR floor Rate [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.50%
LIBOR floor Rate [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.25%
Eurodollar [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.50%
Eurodollar [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.25%
Senior Note 2021
Debt Instrument [Line Items]
Debt Instrument Amount Redeemed			$ 200,000,000.0
8.25% Senior Notes Due 2027 [Member]
Debt Instrument [Line Items]
Senior notes		$ 1,000,000,000.0		$ 1,000,000,000.0				$ 1,000,000,000.0
Interest rate		8.25%		8.25%				8.25%		8.25%
Maturity date								Mar. 01, 2027
8.25% Senior Notes Due 2027 [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Debt issuance costs incurred								$ 17,300,000
8.25% Senior Notes Due 2027 [Member] \| Senior Notes [Member] \| Debt Instrument, Redemption, Period One [Member]
Debt Instrument [Line Items]
Redemption date, period end date								Mar. 01, 2022
8.25% Senior Notes Due 2027 [Member] \| Senior Notes [Member] \| Debt Instrument, Redemption, Period Two [Member]
Debt Instrument [Line Items]
Debt instrument redemption price percentage								100.00%
Redemption date, period end date								Mar. 01, 2022
8.25% Senior Notes Due 2027 [Member] \| Senior Notes [Member] \| Redemption Under Certain Circumstances [Member]
Debt Instrument [Line Items]
Debt instrument redemption price percentage								108.25%
Redemption date, period end date								Mar. 01, 2022
Percentage of principal amount of debt redeemed								40.00%
8.25% Senior Notes Due 2027 [Member] \| Senior Notes [Member] \| Option of the Holders [Member] \| Redemption Upon Certain Change of Control Events [Member]
Debt Instrument [Line Items]
Debt instrument redemption price percentage								101.00%
6.00% Senior Secured Notes Due 2026 [Member]
Debt Instrument [Line Items]
Interest rate		6.00%		6.00%				6.00%		6.00%
Senior secured notes		$ 1,500,000,000		$ 1,500,000,000.0				$ 1,500,000,000.0
Debt instrument, maturity year		2026
Maturity date								Mar. 01, 2026
6.00% Senior Secured Notes Due 2026 [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Debt issuance costs incurred								$ 22,000,000.0
6.00% Senior Secured Notes Due 2026 [Member] \| Senior Notes [Member] \| Debt Instrument, Redemption, Period One [Member]
Debt Instrument [Line Items]
Redemption date, period end date							Mar. 01, 2022
6.00% Senior Secured Notes Due 2026 [Member] \| Senior Notes [Member] \| Debt Instrument, Redemption, Period Two [Member]
Debt Instrument [Line Items]
Debt instrument redemption price percentage							100.00%
Redemption date, period end date							Mar. 01, 2022
6.00% Senior Secured Notes Due 2026 [Member] \| Senior Notes [Member] \| Redemption Under Certain Circumstances [Member]
Debt Instrument [Line Items]
Debt instrument redemption price percentage							106.00%
Redemption date, period end date							Mar. 01, 2022
Percentage of principal amount of debt redeemed							40.00%
6.00% Senior Secured Notes Due 2026 [Member] \| Senior Notes [Member] \| Option of the Holders [Member] \| Redemption Upon Certain Change of Control Events [Member]
Debt Instrument [Line Items]
Debt instrument redemption price percentage							101.00%
5.50% Senior Secured Notes Due 2024 [Member]
Debt Instrument [Line Items]
Interest rate		5.50%		5.50%				5.50%		5.50%
Senior secured notes		$ 1,250,000,000		$ 1,250,000,000.0				$ 1,250,000,000.0
Debt instrument, maturity year		2024
Maturity date								Mar. 01, 2024
5.50% Senior Secured Notes Due 2024 [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Debt issuance costs incurred								$ 18,400,000
5.50% Senior Secured Notes Due 2024 [Member] \| Senior Notes [Member] \| Debt Instrument, Redemption, Period One [Member]
Debt Instrument [Line Items]
Redemption date, period end date								Mar. 01, 2022
5.50% Senior Secured Notes Due 2024 [Member] \| Senior Notes [Member] \| Debt Instrument, Redemption, Period Two [Member]
Debt Instrument [Line Items]
Debt instrument redemption price percentage								100.00%
Redemption date, period end date								Mar. 01, 2021
5.50% Senior Secured Notes Due 2024 [Member] \| Senior Notes [Member] \| Redemption Under Certain Circumstances [Member]
Debt Instrument [Line Items]
Debt instrument redemption price percentage								105.50%
Redemption date, period end date								Mar. 01, 2021
Percentage of principal amount of debt redeemed								40.00%
5.50% Senior Secured Notes Due 2024 [Member] \| Senior Notes [Member] \| Option of the Holders [Member] \| Redemption Upon Certain Change of Control Events [Member]
Debt Instrument [Line Items]
Debt instrument redemption price percentage								101.00%
Senior Secured Credit Facilities [Member]
Debt Instrument [Line Items]
Repayments of senior debt	$ 2,100,000,000
Senior Secured Term Loan Due April 2026 [Member]
Debt Instrument [Line Items]
Senior secured notes	3,200,000,000			3,200,000,000.0				$ 3,200,000,000.0
Repayments of senior debt	261,300,000				$ 225,000,000.0
Debt issuance costs incurred								50,000,000.0
Original issue discount	32,000,000.0
Debt discount written off								4,100,000
Debt issuance cost written off								$ 7,700,000
Debt instrument, variable rate basis								The interest rate is, at the Company’s option, either (1) the base rate (which is the highest of (w) the greater of the then-current federal funds rate set by the Federal Reserve Bank of New York and the overnight federal funds rate, in each case, plus 0.5%, (x) the prime rate on such day, (y) the one-month Eurodollar rate published on such date plus 1.00% and (z) 1.00% per annum) plus an applicable margin of 2.25% or (2) one-, two-, three- or six-month LIBOR or, if available from all lenders, 12-month LIBOR or any shorter period (selected at the option of CommScope, Inc.) plus an applicable margin of 3.25%. The 2026 Term Loan is subject to a LIBOR floor of 0.00%.
Commitment fee amount								$ 12,300,000
Scheduled amortization payments per year				32,000,000.0				$ 32,000,000.0
Senior secured term loan, frequency of payments								quarterly
Senior secured term loan, maturity date								2026-04
Current portion of long term debt				32,000,000.0				$ 32,000,000.0
Incremental borrowings maximum term loan facility on principal amount	$ 950,000,000.0
Incremental borrowings criteria percentage of consolidated EBITDA	50.00%
Senior Secured Term Loan Due April 2026 [Member] \| Federal Reserve Bank of New York and Federal Funds Rate, Plus Base Rate [Member] \| Interest Rate on Term Loan, Scenario Plan One [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate								0.50%
Senior Secured Term Loan Due April 2026 [Member] \| Eurodollar Rate, Plus Base Rate [Member] \| Interest Rate on Term Loan, Scenario Plan One [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate								1.00%
Senior Secured Term Loan Due April 2026 [Member] \| Percentage per Annum, Base Rate [Member] \| Interest Rate on Term Loan, Scenario Plan One [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate								1.00%
Senior Secured Term Loan Due April 2026 [Member] \| 1.00% per Annum, Plus Base Rate [Member] \| Interest Rate on Term Loan, Scenario Plan One [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate								2.25%
Senior Secured Term Loan Due April 2026 [Member] \| LIBOR, Plus Base Rate [Member] \| Interest Rate on Term Loan, Scenario Plan Two [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate								3.25%
Senior Secured Term Loan Due April 2026 [Member] \| LIBOR floor Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate								0.00%
Asset Based Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Asset-based revolving credit facility maximum borrowing capacity	$ 1,000,000,000.0
Asset-based revolving credit facility, maturity month and year	2024-04
Asset-based revolving credit facility costs incurred				13,200,000				$ 13,200,000
Asset-based revolving credit facility amount borrowed								15,000,000.0
Asset-based revolving credit facility amount repaid								15,000,000.0
Asset-based revolving credit facility outstanding amount	$ 250,000,000			0				0
Asset-based revolving credit facility available borrowing capacity				881,700,000				$ 881,700,000
Asset-based revolving credit facility, description								The following fees are applicable under the new asset-based revolving credit facility: (i) an unused line fee of (x) 0.25% per annum of the unused portion of the new asset-based revolving credit facility when the average unused portion of the facility is less than 50% of the aggregate commitments under the new asset-based revolving credit facility or (y) 0.375% per annum of the unused portion of the new asset-based revolving credit facility when the average unused portion of the facility is equal to or greater than 50% of the aggregate commitments under the new asset-based revolving credit facility; (ii) a letter of credit participation fee on the aggregate stated amount of each letter of credit equal to the applicable margin for adjusted Eurodollar rate loans, as applicable; (iii) a letter of credit fronting fee of 0.125% per annum, multiplied by the average aggregate daily maximum amount available to be drawn under all applicable letters of credit issued by such letter of credit issuer; and (iv) certain other customary fees and expenses of the lenders and agents thereunder.
Asset-based revolving credit facility unused capacity commitment fee when average unused portion is less than 50% percentage	0.25%
Asset-based revolving credit facility unused capacity commitment fee when average unused portion is equal to or greater than 50% percentage	0.375%
Letter of credit fronting fee	0.125%
New asset-based revolving credit facility, covenant, description								The new asset-based revolving credit facility contains a Covenant Fixed Charge Coverage Ratio (as defined in the credit agreement governing the asset-based revolving credit facility) of 1.00 to 1.00. The credit agreement provides that, in the event excess availability under the asset-based revolving credit facility is less than the greater of $80 million and 10% of the borrowing base as of the end of any fiscal quarter, the Covenant Fixed Charge Coverage Ratio for that fiscal quarter must be tested and must exceed the level set forth above.
Credit agreement covenant fixed charge coverage ratio	100.00%
Debt covenant fixed charge coverage ratio, triggering event, minimum percentage on borrowings base								10.00%
Asset Based Revolving Credit Facility [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Asset-based revolving credit facility maximum borrowing capacity	$ 400,000,000.0
Asset Based Revolving Credit Facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Asset-based revolving credit facility available borrowing capacity				$ 80,000,000				$ 80,000,000