v3.26.1
Document And Entity Information
May 04, 2026
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date May 04, 2026
Entity Registrant Name ADTRAN Holdings, Inc.
Entity Central Index Key 0000926282
Entity Emerging Growth Company false
Entity File Number 001-41446
Entity Incorporation, State or Country Code DE
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
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 per share
Trading Symbol ADTN
Security Exchange Name NASDAQ