Revenue from Contracts with Customers (Tables)

9 Months Ended

Sep. 30, 2024

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue

The following table provides disaggregated sales and other operating revenue by product or service, excluding intersegment revenues:    

	Three Months Ended September 30,				Nine Months Ended September 30,
	2024		2023		2024		2023
	(Dollars in millions)
Sales and other operating revenue:
Cokemaking	$	446.2	$	481.3	$	1,322.2	$	1,418.5
Energy	12.7		12.5		36.1		36.5
Logistics	20.8		15.4		60.9		55.6
Operating and licensing fees	8.8		9.1		26.2		25.8
Other	1.6		2.1		4.0		6.2
Sales and other operating revenue	$	490.1	$	520.4	$	1,449.4	$	1,542.6

The following tables provide disaggregated sales and other operating revenue by customer:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2024		2023		2024		2023
	(Dollars in millions)
Sales and other operating revenue:
Cliffs Steel	$	311.5	$	338.7	$	915.7	$	1,000.8
U.S. Steel	72.0		79.2		214.1		230.4
Other	106.6		102.5		319.6		311.4
Sales and other operating revenue	$	490.1	$	520.4	$	1,449.4	$	1,542.6