Cover - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Feb. 28, 2025	Jun. 28, 2024
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2024
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-42172
Entity Registrant Name	Calumet, Inc. /DE
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	36-5098520
Entity Address, Address Line One	1060 N Capitol Ave
Entity Address, Address Line Two	Suite 6-401
Entity Address, City or Town	Indianapolis
Entity Address, State or Province	IN
Entity Address, Postal Zip Code	46204
City Area Code	317
Local Phone Number	328-5660
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	CLMT
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float				$ 1.0
Entity Common Stock, Shares Outstanding			86,207,118
Documents Incorporated by Reference	NONE
Auditor Name	GRANT THORNTON LLP	Ernst & Young LLP
Auditor Location	Pittsburgh, Pennsylvania	Indianapolis, Indiana
Auditor Firm ID	248	42
Entity Central Index Key	0002013745
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Amendment Flag	false