XML 69 R58.htm IDEA: XBRL DOCUMENT
v3.21.2

DEBT - Credit Silo Combination (Details) - USD ($) | 1 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 | Jun. 30, 2021 | Dec. 31, 2020
Debt Instrument [Line Items] |  |  |
Principal amount |  | $ 27,158,633,000 | $ 26,940,911,000
Long-term debt |  | 26,989,068,000 | 26,722,342,000
Face Amount of Senior Notes and Senior Guaranteed Notes |  | 7,660,000,000 | 7,658,806,000
Carrying amount of Senior Notes and Senior Guaranteed Notes |  | 7,634,269,000 | 7,626,309,000
Face amount of Credit Facility Debt |  | 7,413,813,000 | 7,750,188,000
Carrying value of Credit Facility Debt |  | 7,373,281,000 | 7,705,192,000
Finance Lease, Liability |  | 199,792,000 | 159,637,000
Debt |  | 1,296,745,000 | 1,245,713,000
Finance Lease, Liability, Current |  | 89,694,000 | 63,454,000
Long-term debt, net of current maturities |  | 25,692,323,000 | 25,476,629,000
Principal Amount |  | 27,158,633,000 | 26,940,911,000
Face Amount of Senior Notes |  | 8,524,024,000 | 8,024,024,000
Carrying amount of Senior Notes |  | 8,525,528,000 | 8,009,426,000
Senior Notes, Current |  | (995,552,000) | (989,917,000)
Cablevision Lightpath |  |  |
Debt Instrument [Line Items] |  |  |
Face Amount of Senior Notes and Senior Secured Notes |  | 1,462,000,000 | 1,465,000,000
Carrying amount of Senior Notes and Senior Secured Notes |  | 1,428,681,000 | 1,429,471,000
Loans Payable |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | 132,749,000 | 113,592,000
Long-term debt |  | 132,749,000 | 113,592,000
Principal Amount |  | 132,749,000 | 113,592,000
Credit Facility [Domain] |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | 78,750,000 | 78,750,000
Debt |  | 78,750,000 | 78,750,000
Principal Amount |  | 78,750,000 | 78,750,000
Short-term Debt |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | 1,301,193,000 | 1,255,796,000
Debt |  | 1,296,745,000 | 1,245,713,000
Principal Amount |  | 1,301,193,000 | 1,255,796,000
Incremental Term Loan B-3 | Secured Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | $ 1,246,313,000 | 1,252,688,000
Stated interest rate |  | 2.323% |
Credit facility |  | $ 1,242,339,000 | 1,248,293,000
Principal Amount |  | 1,246,313,000 | 1,252,688,000
CSC Holdings Revolving Credit Facility | Revolving Credit Facility |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | $ 325,000,000 | 625,000,000
Stated interest rate |  | 2.354% |
Line of Credit Facility, Maximum Borrowing Capacity |  | $ 2,475,000,000 |
Credit facility |  | 317,425,000 | 616,027,000
Principal Amount |  | $ 325,000,000 | 625,000,000
CSC Holdings Revolving Credit Facility | Secured Debt [Member] | LIBOR |  |  |
Debt Instrument [Line Items] |  |  |
Basis spread on variable rate |  | 2.25% |
CSC Holdings Term Loan B | Secured Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | $ 2,880,000,000 | 2,895,000,000
Stated interest rate |  | 2.323% |
Credit facility |  | $ 2,870,231,000 | 2,884,065,000
Principal Amount |  | 2,880,000,000 | 2,895,000,000
Incremental Term Loan B-5 | Secured Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | $ 2,962,500,000 | 2,977,500,000
Stated interest rate |  | 2.573% |
Credit facility |  | $ 2,943,286,000 | 2,956,807,000
Principal Amount |  | 2,962,500,000 | 2,977,500,000
Secured Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | 1,759,017,000 | 1,699,566,000
Long-term debt |  | 1,687,530,000 | 1,617,506,000
Principal Amount |  | 1,759,017,000 | 1,699,566,000
Loans Payable |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | 139,987,000 | 183,690,000
Long-term debt |  | 139,987,000 | 174,801,000
Principal Amount |  | 139,987,000 | 183,690,000
Cablevision Lightpath Term B Loan | Secured Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | $ 597,000,000 | 600,000,000
Stated interest rate |  | 3.75% |
Credit facility |  | $ 580,951,000 | 582,808,000
Principal Amount |  | 597,000,000 | 600,000,000
Cablevision Lightpath Term B Loan | Secured Debt [Member] | Eurodollar |  |  |
Debt Instrument [Line Items] |  |  |
Basis spread on variable rate | 3.25% |  |
Cablevision Lightpath Revolving Credit Facility | Revolving Credit Facility |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | 0 | 0
Line of Credit Facility, Maximum Borrowing Capacity |  | 100,000,000 |
Credit facility |  | 0 | 0
Principal Amount |  | 0 | 0
Senior Notes | 8.0% Notes due April 15, 2020 |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | $ 1,000,000,000 | 1,000,000,000
Stated interest rate |  | 3.375% |
Outstanding debt |  | $ 996,829,000 | 996,692,000
Principal Amount |  | 1,000,000,000 | 1,000,000,000
Senior Notes | 6.75% Notes due November 15, 2021 |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | $ 1,000,000,000 | 1,000,000,000
Stated interest rate |  | 6.75% |
Outstanding debt |  | $ 995,552,000 | 989,917,000
Principal Amount |  | 1,000,000,000 | 1,000,000,000
Senior Notes | 5.875% Notes due September 15, 2022 |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | $ 649,024,000 | 649,024,000
Stated interest rate |  | 5.875% |
Outstanding debt |  | $ 626,047,000 | 617,333,000
Principal Amount |  | 649,024,000 | 649,024,000
Senior Notes | 5.25% Notes due June 1, 2024 |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | $ 750,000,000 | 750,000,000
Stated interest rate |  | 5.25% |
Outstanding debt |  | $ 703,898,000 | 697,041,000
Principal Amount |  | 750,000,000 | 750,000,000
Senior Notes | Cablevision 7.500% Notes due April 1, 2028 |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | $ 4,118,000 | 4,118,000
Stated interest rate |  | 7.50% |
Outstanding debt |  | $ 4,113,000 | 4,112,000
Principal Amount |  | 4,118,000 | 4,118,000
Senior Notes | CSC Holdings 7.500% Notes due April 1, 2028 |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | $ 1,045,882,000 | 1,045,882,000
Stated interest rate |  | 7.50% |
Outstanding debt |  | $ 1,044,500,000 | 1,044,424,000
Principal Amount |  | 1,045,882,000 | 1,045,882,000
Senior Notes | CSC Holdings 5.750% Notes due January 15, 2030 |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | $ 2,250,000,000 | 2,250,000,000
Stated interest rate |  | 5.75% |
Outstanding debt |  | $ 2,284,520,000 | 2,286,097,000
Principal Amount |  | 2,250,000,000 | 2,250,000,000
Senior Notes | CSC Holdings 4.625% Notes due December 1, 2030 |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | $ 2,325,000,000 | 2,325,000,000
Stated interest rate |  | 4.625% |
Outstanding debt |  | $ 2,368,732,000 | 2,370,502,000
Principal Amount |  | 2,325,000,000 | 2,325,000,000
Senior Notes | Cablevision Lightpath LLC 5.625% Notes due September 15, 2028 |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | $ 415,000,000 | 415,000,000
Stated interest rate |  | 5.625% |
Outstanding debt |  | $ 406,629,000 | 406,176,000
Principal Amount |  | 415,000,000 | 415,000,000
Senior Notes | CSC Holdings 5.000% Notes due November 15, 2031 |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | $ 500,000,000 |
Stated interest rate |  | 5.00% |
Outstanding debt |  | $ 498,166,000 |
Principal Amount |  | 500,000,000 |
Senior Notes | CSC Holdings 4.500% Senior Guaranteed Notes due November 15, 2021 |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | $ 1,500,000,000 |
Stated interest rate |  | 4.50% |
Outstanding debt |  | $ 1,494,498,000 |
Principal Amount |  | 1,500,000,000 |
Secured Debt [Member] | CSC Holdings 5.500% Notes due May 15, 2026 |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | $ 0 | 1,498,806,000
Stated interest rate |  | 5.50% |
Outstanding debt |  | $ 0 | 1,487,644,000
Principal Amount |  | 0 | 1,498,806,000
Secured Debt [Member] | 5.5% Notes due April 15, 2027 |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | $ 1,310,000,000 | 1,310,000,000
Stated interest rate |  | 5.50% |
Outstanding debt |  | $ 1,306,225,000 | 1,305,955,000
Principal Amount |  | 1,310,000,000 | 1,310,000,000
Secured Debt [Member] | 5.375% Senior Guaranteed Notes Due February 1, 2028 |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | $ 1,000,000,000 | 1,000,000,000
Stated interest rate |  | 5.375% |
Outstanding debt |  | $ 993,868,000 | 993,490,000
Principal Amount |  | 1,000,000,000 | 1,000,000,000
Secured Debt [Member] | CSC Holdings 6.500% Notes due February 1, 2029 |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | $ 1,750,000,000 | 1,750,000,000
Stated interest rate |  | 6.50% |
Outstanding debt |  | $ 1,747,375,000 | 1,747,245,000
Principal Amount |  | 1,750,000,000 | 1,750,000,000
Secured Debt [Member] | CSC Holdings 4.125% Notes due December 1, 2030 |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | $ 1,100,000,000 | 1,100,000,000
Stated interest rate |  | 4.125% |
Outstanding debt |  | $ 1,095,474,000 | 1,095,283,000
Principal Amount |  | 1,100,000,000 | 1,100,000,000
Secured Debt [Member] | Cablevision Lightpath LLC 3.875% Notes due September 15, 2027 |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | $ 450,000,000 | 450,000,000
Stated interest rate |  | 3.875% |
Outstanding debt |  | $ 441,101,000 | 440,487,000
Principal Amount |  | 450,000,000 | 450,000,000
Long-term Debt |  |  |
Debt Instrument [Line Items] |  |  |
Principal amount |  | 25,857,440,000 | 25,685,115,000
Long-term debt, net of current maturities |  | 25,692,323,000 | 25,476,629,000
Principal Amount |  | $ 25,857,440,000 | $ 25,685,115,000

X
- Definition Carrying amount of Senior Notes + References No definition available. + Details
Name: | atus_CarryingAmountOfSeniorNotes
Namespace Prefix: | atus_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying amount of Senior Notes and Senior Guaranteed Notes + References No definition available. + Details
Name: | atus_CarryingAmountOfSeniorNotesAndSeniorGuaranteedNotes
Namespace Prefix: | atus_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying amount of Senior Notes and Senior Secured Notes + References No definition available. + Details
Name: | atus_CarryingAmountOfSeniorNotesAndSeniorSecuredNotes
Namespace Prefix: | atus_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying value of Credit Facility Debt + References No definition available. + Details
Name: | atus_CarryingValueOfCreditFacilityDebt
Namespace Prefix: | atus_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Face amount of Credit Facility Debt + References No definition available. + Details
Name: | atus_FaceAmountOfCreditFacilityDebt
Namespace Prefix: | atus_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Face Amount of Senior Notes + References No definition available. + Details
Name: | atus_FaceAmountOfSeniorNotes
Namespace Prefix: | atus_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Face Amount of Senior Notes and Senior Guaranteed Notes + References No definition available. + Details
Name: | atus_FaceAmountOfSeniorNotesAndSeniorGuaranteedNotes
Namespace Prefix: | atus_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Face Amount of Senior Notes and Senior Secured Notes + References No definition available. + Details
Name: | atus_FaceAmountOfSeniorNotesAndSeniorSecuredNotes
Namespace Prefix: | atus_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- 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: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399 Reference 3: 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 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69C -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69B -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 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 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- 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

X
- Definition Present value of lessee's discounted obligation for lease payments from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
Name: | us-gaap_FinanceLeaseLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Present value of lessee's discounted obligation for lease payments from finance lease, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
Name: | us-gaap_FinanceLeaseLiabilityCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- 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=120391452&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=120398452&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=120400017&loc=d3e572229-122910 + Details
Name: | us-gaap_LineOfCredit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The effective interest rate at the end of the reporting period. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- 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 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69C -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612 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)(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69B -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612 Reference 5: 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=120398452&loc=d3e534808-122878 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1D -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611 Reference 7: 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=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_LongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- 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 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 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_LongTermDebtCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + 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=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_LongTermDebtNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- 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 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 210.7-03.16(a)) -URI http://asc.fasb.org/extlink&oid=120400017&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=120398452&loc=d3e534808-122878 + Details
Name: | us-gaap_SeniorNotes
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying value as of the balance sheet date of the portion of long-term notes having the highest claim on the assets of the issuer in case of bankruptcy or liquidation, due within one year or the normal operating cycle, if longer. Senior note holders are paid off in full before any payments are made to debt holders having a lesser priority of repayment. + 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 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766 + Details
Name: | us-gaap_SeniorNotesCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | dei_LegalEntityAxis=atus_CablevisionLightpathMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortTermDebtTypeAxis=us-gaap_LoansPayableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortTermDebtTypeAxis=us-gaap_CreditFacilityDomain
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortTermDebtTypeAxis=us-gaap_ShortTermDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atus_IncrementalTermLoanB3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=us-gaap_SecuredDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atus_CSCHoldingsRevolvingCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atus_CSCHoldingsTermLoanBMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atus_IncrementalTermLoanB5Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=us-gaap_SecuredDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=us-gaap_LoansPayableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atus_CablevisionLightpathTermBLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atus_CablevisionLightpathRevolvingCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atus_Cablevision8.0NotesdueApril152020Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atus_CSCHoldings6.75NotesdueNovember152021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atus_CSCHoldingsCablevision5875NotesDueSeptember152022Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atus_CSCHoldings5.25NotesdueJune12024Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atus_CSCHoldingsCablevision7500NotesDueApril12028Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atus_CSCHoldings7.500NotesdueApril12028Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atus_CSCHoldings5750NotesDueJanuary152030Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atus_CSCHoldings4625NotesDueDecember12030Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atus_CablevisionLightpathLLC5625NotesDueSeptember152028Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atus_CSCHoldings5000NotesDueNovember152031Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atus_CSCHoldings4500SeniorGuaranteedNotesDueNovember152021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_SecuredDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atus_CSCHoldings5.500NotesdueMay152026Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atus_CSCHoldings5.5NotesdueApril152027Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atus_A5.375SeniorGuaranteedNotesDueFebruary12028Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atus_CSCHoldings6500NotesDueFebruary12029Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atus_CSCHoldings4125NotesDueDecember12030Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atus_CablevisionLightpathLLC3875NotesDueSeptember152027Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_LongTermDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |