Subsequent Events |
6 Months Ended |
|---|---|
Jun. 30, 2026 | |
| Subsequent Events [Abstract] | |
| Subsequent Events | Subsequent Events On July 15, 2026, the Company's wholly owned subsidiaries, Calumet Specialty Products Partners, L.P. (the "Partnership") and Calumet Finance Corp. (together with the Partnership, the "Issuers"), redeemed all of the outstanding $100.0 million 9.75% Senior Notes due 2028 that were originally issued in January 2025 (the "2028 Mirror Notes"), at a cash redemption price of 102.438% of the principal amount, plus accrued and unpaid interest up to but not including the redemption date. On July 31, 2026, Calumet Montana fully repaid and terminated the Montana terminal asset financing arrangement for cash consideration of $15.5 million.
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