Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Feb. 28, 2023	Jun. 30, 2022
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2022
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Trading Symbol	IRON
Entity Registrant Name	Disc Medicine, Inc.
Entity Central Index Key	0001816736
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
ICFR Auditor Attestation Flag	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		18,998,025
Entity Public Float			$ 29.0
Title of 12(b) Security	Common Stock, $0.0001 Par Value
Security Exchange Name	NASDAQ
Entity File Number	001-39438
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	82-3220679
Entity Address, Address Line One	321 Arsenal Street, Suite 101
Entity Address, City or Town	Watertown
Entity Address, State or Province	MA
Entity Ex Transition Period	false
Entity Address, Postal Zip Code	02472
City Area Code	617
Local Phone Number	674-9274
Document Annual Report	true
Document Transition Report	false
Auditor Firm ID	42
Auditor Name	Ernst & Young LLP
Auditor Location	Boston, Massachusetts