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Document and Entity Information
Jul. 08, 2022
Cover [Abstract]  
Document Type 8-K12B
Document Period End Date Jul. 08, 2022
Entity Registrant Name ADTRAN Holdings, Inc.
Entity Incorporation, State or Country Code DE
Entity File Number 000-24612
Entity Tax Identification Number 87-2164282
Entity Address, Address Line One 901 Explorer Boulevard
Entity Address, City or Town Huntsville
Entity Address, State or Province AL
Entity Address, Postal Zip Code 35806-2807
City Area Code 256
Local Phone Number 963-8000
Entity Information, Former Legal or Registered Name Acorn HoldCo, Inc.
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, Par Value $0.01
Trading Symbol ADTN
Security Exchange Name NASDAQ
Entity Emerging Growth Company false
Entity Central Index Key 0000926282
Amendment Flag false