Document And Entity Information - USD ($)	12 Months Ended
Document And Entity Information - USD ($)	Dec. 31, 2021	Feb. 18, 2022	Jun. 30, 2021
Document Information Line Items
Entity Registrant Name	CONCORD ACQUISITION CORP
Trading Symbol	CND
Document Type	10-K/A
Current Fiscal Year End Date	--12-31
Entity Public Float			$ 261,600,000
Amendment Flag	true
Amendment Description	Concord Acquisition Corp (the “Company”) is filing this Amendment No. 1 on Form 10-K/A (the “Amendment”) to its Annual Report on Form 10-K for the fiscal year ended December 31, 2021, originally filed with the U.S. Securities and Exchange Commission (the “SEC”) on March 4, 2022 (the “Annual Report”), solely for the purpose of filing revised certifications by the Company’s principal executive officer and principal financial and accounting officer, as Exhibits 31.1 and 31.2 herewith, to correct an inadvertent omission of certain language regarding internal control over financial reporting required to be included in such certifications by Item 601(b)(31)(i) of Regulation S-K.In accordance with interpretation 246.13 in the Regulation S-K section of the SEC’s “Compliance & Disclosure Interpretations,” this Amendment contains only the cover page, explanatory note, signature page and the revised certifications (containing only paragraphs 1, 2, 4 and 5 of the text otherwise prescribed by Item 601(b)(31)(i) of Regulation S-K). Because no financial statements are included with this Amendment, paragraph 3 of each of the certifications has been omitted.Except as described above, no attempt has been made in this Amendment to modify or update the other disclosures or exhibits presented in the Annual Report. Except as presented in this Amendment and except for Exhibits 31.1 and 31.2 filed herewith, this Amendment does not reflect events occurring after the filing of the Annual Report or modify or update those disclosures. Accordingly, this Amendment should be read in conjunction with the Annual Report and the Company’s other filings with the SEC.
Entity Central Index Key	0001824301
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Well-known Seasoned Issuer	No
Document Period End Date	Dec. 31, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Shell Company	true
Entity Ex Transition Period	false
ICFR Auditor Attestation Flag	false
Document Annual Report	true
Document Transition Report	false
Entity File Number	001-39770
Auditor Location	Philadelphia, PA
Entity Incorporation, State or Country Code	DE
Auditor Firm ID	688
Entity Tax Identification Number	85-2642903
Entity Address, Address Line One	477 Madison Avenue
Auditor Name	Marcum llp
Entity Address, City or Town	New York,
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10022
City Area Code	(212)
Local Phone Number	883-4330
Title of 12(b) Security	Class A common stock, $0.0001 par value per share
Security Exchange Name	NYSE
Entity Interactive Data Current	Yes
Class A Common Stock
Document Information Line Items
Entity Common Stock, Shares Outstanding		28,352,000
Class B Common Stock
Document Information Line Items
Entity Common Stock, Shares Outstanding		6,900,000

Concord Acquisition Corp 10-K/A