XML 114 R81.htm IDEA: XBRL DOCUMENT
v3.26.1

Contingencies and Guaranty - Schedule of Spectrum Sale Agreements (Details) - Wireless Licenses $ in Millions | 1 Months Ended | 12 Months Ended | 15 Months Ended | 22 Months Ended | 36 Months Ended | 62 Months Ended
--- | --- | --- | --- | --- | --- | ---
Jan. 31, 2025 USD ($) | Jun. 30, 2024 USD ($) | Apr. 30, 2023 USD ($) | Feb. 28, 2021 USD ($) | Mar. 31, 2026 USD ($) license | Mar. 31, 2025 USD ($) | Mar. 31, 2026 USD ($) | Mar. 31, 2026 USD ($) license | Mar. 31, 2026 USD ($) license | Mar. 31, 2026 USD ($) license
SDG&E |  |  |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |  |
Total Consideration |  |  |  | $ 50.0 |  |  |  |  |  |
Payments Received |  |  |  |  |  |  |  |  |  | $ 45.6
Payments remaining |  |  |  |  | $ 3.1 |  | $ 3.1 | $ 3.1 | $ 3.1 | $ 3.1
Broadband license(s) delivered | license |  |  |  |  |  |  |  |  |  | 2
Broadband license(s) remaining | license |  |  |  |  | 1 |  |  |  |  |
LCRA Agreement |  |  |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |  |
Total Consideration |  |  | $ 30.0 |  |  |  |  |  |  |
Payments Received |  |  |  |  |  |  |  |  | 29.3 |
Payments remaining |  |  |  |  | $ 0.7 |  | 0.7 | 0.7 | $ 0.7 | $ 0.7
Broadband license(s) delivered | license |  |  |  |  |  |  |  |  | 64 |
Broadband license(s) remaining | license |  |  |  |  | 4 |  |  |  |  |
LCRA Expansion Agreement |  |  |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |  |
Total Consideration | $ 13.5 |  |  |  |  |  |  |  |  |
Payments Received |  |  |  |  |  |  | 6.0 |  |  |
Payments remaining |  |  |  |  | $ 6.5 |  | 6.5 | 6.5 | $ 6.5 | 6.5
Broadband license(s) remaining | license |  |  |  |  | 34 |  |  |  |  |
Customer credit |  |  |  |  | $ 1.0 |  | 1.0 | 1.0 | 1.0 | 1.0
Oncor |  |  |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |  |
Total Consideration |  | $ 102.5 |  |  |  |  |  |  |  |
Payments Received |  |  |  |  |  |  |  | 100.6 |  |
Payments remaining |  |  |  |  | 0.0 |  | $ 0.0 | $ 0.0 | $ 0.0 | $ 0.0
Broadband license(s) delivered | license |  |  |  |  |  |  |  | 95 |  |
Reimbursable clearing costs and anti windfall payments |  |  |  |  | 6.0 | $ 2.9 |  | $ 7.5 |  |
Realized clearing costs and anti-windfall payments |  |  |  |  | $ 5.6 |  |  |  |  |

X
- Definition Broadband License Consideration, Reimbursable Clearing Costs And Anti Windfall Payments + References No definition available. + Details
Name: | atex_BroadbandLicenseConsiderationReimbursableClearingCostsAndAntiWindfallPayments
Namespace Prefix: | atex_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Broadband License Sale, Reimbursable Clearing Costs And Anti Windfall Payments + References No definition available. + Details
Name: | atex_BroadbandLicenseSaleReimbursableClearingCostsAndAntiWindfallPayments
Namespace Prefix: | atex_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Broadband Licenses Granted, Estimated Consideration + References No definition available. + Details
Name: | atex_BroadbandLicensesGrantedEstimatedConsideration
Namespace Prefix: | atex_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Broadband Licenses Granted, Number Of License Delivered + References No definition available. + Details
Name: | atex_BroadbandLicensesGrantedNumberOfLicenseDelivered
Namespace Prefix: | atex_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Broadband Licenses Granted, Number Of License Remaining + References No definition available. + Details
Name: | atex_BroadbandLicensesGrantedNumberOfLicenseRemaining
Namespace Prefix: | atex_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Broadband Licenses Granted, Payment Received + References No definition available. + Details
Name: | atex_BroadbandLicensesGrantedPaymentReceived
Namespace Prefix: | atex_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Collaborative Arrangement, Rights And Obligations, Customer Credit + References No definition available. + Details
Name: | atex_CollaborativeArrangementRightsAndObligationsCustomerCredit
Namespace Prefix: | atex_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Revenue, Remaining Performance Obligation, Payments Remaining + References No definition available. + Details
Name: | atex_RevenueRemainingPerformanceObligationPaymentsRemaining
Namespace Prefix: | atex_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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_OtherCommitmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_CounterpartyNameAxis=atex_SanDiegoGasElectricCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_LicensingAgreementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=atex_LowerColoradoRiverAuthorityLCRAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=atex_LowerColoradoRiverAuthorityLCRAExpansionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=atex_OncorElectricDeliveryCompanyLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |