| Document and Entity Information | Aug. 06, 2023 |
| Cover [Abstract] | |
| Amendment Flag | true |
| Entity Central Index Key | 0000926282 |
| Document Type | 8-K/A |
| Document Period End Date | Aug. 06, 2023 |
| Entity Registrant Name | ADTRAN Holdings, Inc. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-41446 |
| 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 |
| Security 12b Title | Common Stock, Par Value $0.01 |
| Trading Symbol | ADTN |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Amendment Description | This Current Report on Form 8-K/A amends the Current Report on Form 8-K of ADTRAN Holdings, Inc. (the “Company”) originally furnished by the Company to the Securities and Exchange Commission on August 7, 2023 (the “Initial 8-K”). The sole purpose for filing this Form 8-K/A is to fix an incorrect ex-dividend date contained in Item 2.02 and Exhibit 99.1 of the Initial 8-K, as described further below. Except as stated in this Explanatory Note, no other changes have been made to the Initial 8-K or Exhibit 99.1 thereto. |
