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Commitments and Contingencies - Additional Information (Detail) € in Millions, $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2023 EUR (€) | Mar. 31, 2023 USD ($) | Mar. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Commitments and Contingencies Disclosure [Abstract] |  |  |  |
Aggregate exit compensation payments obligation | € 309.5 |  | $ 335.6 |
Expire date of exit compensation | Mar. 16, 2023 | Mar. 16, 2023 |  |
Annual recurring compensation obligation | € 10.5 | $ 11.3 |  |
Accrued annual recurring compensation obligation |  | $ 2.8 |  |
Commitments related to performance bonds |  |  | 11.7 | $ 22.0
Commitments related to performance bonds expiration month and year | 2031-04 | 2031-04 |  |
Purchase commitments |  |  | $ 459.3 |

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- Definition Accrued Annual Recurring Compensation Obligation + References No definition available. + Details
Name: | adtn_AccruedAnnualRecurringCompensationObligation
Namespace Prefix: | adtn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Aggregate Exit Compensation Payments Obligation + References No definition available. + Details
Name: | adtn_AggregateExitCompensationPaymentsObligation
Namespace Prefix: | adtn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Annual Recurring Compensation Obligation + References No definition available. + Details
Name: | adtn_AnnualRecurringCompensationObligation
Namespace Prefix: | adtn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Commitments related to performance bonds. + References No definition available. + Details
Name: | adtn_CommitmentsRelatedToPerformanceBonds
Namespace Prefix: | adtn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Commitments related to performance bonds expiration month and year. + References No definition available. + Details
Name: | adtn_CommitmentsRelatedToPerformanceBondsExpirationMonthAndYear
Namespace Prefix: | adtn_
Data Type: | xbrli:gYearMonthItemType
Balance Type: | na
Period Type: | duration

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- Definition Expire Date of Exit Compensation + References No definition available. + Details
Name: | adtn_ExpireDateOfExitCompensation
Namespace Prefix: | adtn_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier. + References No definition available. + Details
Name: | us-gaap_PurchaseObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant