Business Combination Agreement - Additional Information (Details) $ / shares in Units, $ in Thousands				6 Months Ended	12 Months Ended
		Jul. 15, 2022 USD ($) $ / shares shares	Aug. 30, 2021 $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2021 USD ($)	Aug. 30, 2021 € / shares shares
Business Acquisition [Line Items]
Common stock, par value | $ / shares			$ 0.01	$ 0.01	$ 0.01	$ 0.01
Common stock, shares outstanding | shares				77,889,000	78,674,000	77,889,000
Common stock, reserved for future issuance | shares		27,994,595
Goodwill				$ 381,724	$ 353,415	$ 381,724
Total Revenue					1,149,100	1,025,536	$ 563,004
Net Loss attributable to ADTRAN Holdings, Inc.					(267,688)	(2,037)	(8,635)
Net (income) loss attributable to non-controlling interest	[1]				(8,345)	6,851
Decrease in goodwill		$ 8,700
Network Solutions [Member]
Business Acquisition [Line Items]
Goodwill				298,280	297,031	298,280
Total Revenue					974,389	916,793	498,834
Services & Support [Member]
Business Acquisition [Line Items]
Goodwill				83,444	56,384	83,444
Total Revenue					174,711	108,743	64,170
Common Stock [Member]
Business Acquisition [Line Items]
Percentage of common stock exchanged			64.00%
Adtran Networks SE [Member]
Business Acquisition [Line Items]
Business combination date of agreement			Aug. 30, 2021
Common stock, shares outstanding | shares		33,957,538
Percentage of outstanding bearer shares		65.43%	65.43%
Fair value of stock options assumed		$ 12,800
Goodwill		350,458			350,500
Accounts receivable		114,659
Other receivables		1,457
Unpaid principal balance of account receivable		118,500
Unpaid principal balance of other receivable		1,500
Fair value of noncontrolling interest		$ 316,415
Total Revenue				365,900	666,300
Net Loss attributable to ADTRAN Holdings, Inc.				$ 12,900	93,600
Shares held by noncontrolling interest | shares			17,941,496					17,941,496
Closing share price | (per share)		$ 20.2	$ 17.64					€ 17.58
Currency conversion rate		1.00318
Accrued annual recurring cash compensation non-controlling shareholders					11,500
Net (income) loss attributable to non-controlling interest					8,400	(6,900)
Adtran Networks SE [Member] | Selling, General and Administrative Expenses [Member]
Business Acquisition [Line Items]
Transaction costs incurred					26,200
Transaction costs related to the business combination					$ 100	$ 14,200	$ 11,900
Adtran Networks SE [Member] | Network Solutions [Member]
Business Acquisition [Line Items]
Goodwill		$ 272,800
Adtran Networks SE [Member] | Services & Support [Member]
Business Acquisition [Line Items]
Goodwill		$ 77,700
Adtran Networks SE [Member] | Common Stock [Member]
Business Acquisition [Line Items]
Number of shares issuable for each share of acquired entity | shares			0.8244
Percentage of common stock exchanged			36.00%

[1] For the year ended December 31, 2023, we have recognized $11.5 million, representing the recurring cash compensation earned by non-controlling interest shareholders post-DPLTA partially offset by a $3.2 million net loss attributable to non-controlling interests pre-DPLTA for the year ended December 31, 2023.