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Revenue from Contracts with Customers
 6 Months Ended
Jun. 30, 2025
Revenue from Contract with Customer [Abstract]  
Revenue from Contracts with Customers
11. Revenue from Contracts with Customers
Cokemaking
Our blast furnace coke sales are largely made pursuant to long-term, take-or-pay coke sales agreements primarily with Cleveland-Cliffs Steel Holding Corporation and Cleveland-Cliffs Steel LLC, both subsidiaries of Cleveland Cliffs Inc. and collectively referred to as “Cliffs Steel”, United States Steel Corporation (“U.S. Steel”), and Algoma Steel Inc. The take-or-pay provisions in our agreements require our customers to purchase coke volumes as specified in the agreements or pay the contract price for any tonnage they do not purchase. The take-or-pay provisions of our agreements also require us to deliver minimum annual tonnage. As of June 30, 2025, our coke sales agreements have approximately 17.8 million tons of unsatisfied or partially unsatisfied performance obligations, which are expected to be delivered over a weighted average remaining contract term of approximately nine years.
While the revenues in our Domestic Coke segment are primarily tied to blast furnace coke sales made under long-term, take-or-pay agreements, we also produce and sell foundry coke out of our Jewell cokemaking facility. Foundry coke sales are generally made under annual agreements with our customers for an agreed upon price and do not contain take-or-pay volume commitments.
Non-contracted blast furnace coke sales are produced utilizing capacity in excess of our long-term, take-or-pay agreements and foundry coke. These non-contracted blast furnace coke sales are generally sold on a spot basis at the current market price into the global export and North American coke markets, and do not contain the same provisions as our long-term, take-or-pay agreements.
Revenues on all coke sales are recognized when performance obligations to our customers are satisfied in an amount that reflects the consideration that we expect to receive in exchange for the coke.
Logistics
In our logistics business, handling and/or mixing services are provided to steel, coke (including some of our domestic cokemaking facilities), electric utility, coal producing and other manufacturing based customers. Materials are transported in numerous ways, including rail, truck, barge or ship. We do not take possession of materials handled, but rather act as intermediaries between our customers and end users, deriving our revenues from services provided on a per ton basis. The handling and mixing services consist primarily of two performance obligations, unloading and loading of materials. Revenues are recognized when the customer receives the benefits of the services provided, in an amount that reflects the consideration that we will receive in exchange for those services.
Estimated take-or-pay revenue of approximately $47.5 million from all of our multi-year logistics contracts is expected to be recognized over the next three years for unsatisfied or partially unsatisfied performance obligations as of June 30, 2025.
Disaggregated Sales and Other Operating Revenue
The following table provides disaggregated sales and other operating revenue by product or service, excluding intersegment revenues:    
Three Months Ended June 30,Six Months Ended June 30,
 2025202420252024
 (Dollars in millions)
Sales and other operating revenue:
Cokemaking$397.2 $429.3 $788.5 $876.0 
Energy12.5 11.5 25.3 23.4 
Logistics13.9 19.8 36.0 40.1 
Operating and licensing fees8.6 9.1 16.4 17.4 
Other1.9 1.2 3.9 2.4 
Sales and other operating revenue$434.1 $470.9 $870.1 $959.3 
The following tables provide disaggregated sales and other operating revenue by customer:
Three Months Ended June 30,Six Months Ended June 30,
2025202420252024
(Dollars in millions)
Sales and other operating revenue:
Cliffs Steel$250.7 $286.9 $550.0 $604.2 
U.S. Steel60.3 70.1 120.3 142.1 
Other123.1 113.9 199.8 213.0 
Sales and other operating revenue$434.1 $470.9 $870.1 $959.3