Summary of Significant Accounting Policies - C-Corp Conversion (Details) - USD ($) $ / shares in Units, $ in Millions	Jul. 10, 2024	Jun. 30, 2025	Dec. 31, 2024
Summary of Significant Accounting Policies
Exercise price	$ 20
Class of warrants issued	2,000,000	2,000,000	2,000,000
Warrants issued		$ 7.8	$ 7.8
General partner
Summary of Significant Accounting Policies
Number of shares issued	5,500,000
Number of warrants issued	2,000,000
Exercise price	$ 20	$ 20
Class of warrants issued		2,000,000
Calumet Specialty Products Partners, L.P.
Summary of Significant Accounting Policies
Number of shares issued	80,400,000