XML 124 R114.htm IDEA: XBRL DOCUMENT v3.24.0.1

Employee Benefit Plans (Pension Benefit Plan) - Schedule of Pension Benefit Plan Obligations and Funded Status (Parenthetical) (Details) $ in Millions	Jul. 15, 2022 USD ($)
Retirement Benefits [Abstract]
Business comination acquired additional projected benefit obligations	$ 29.6
Business combination fair value of plan assets	$ 22.3

X

- Definition

Business Combination Fair Value Of Plan Assests

+ References

No definition available.

+ Details

Name:	adtn_BusinessCombinationFairValueOfPlanAssests
Namespace Prefix:	adtn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Defined Benefit Plan Additional Projected Benefit Obligations

+ References

No definition available.

+ Details

Name:	adtn_DefinedBenefitPlanAdditionalProjectedBenefitObligations
Namespace Prefix:	adtn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

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