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Business Segments
 12 Months Ended
Dec. 31, 2024
Segment Reporting [Abstract]  
Business Segments Business Segments
Century Aluminum is a producer of primary aluminum, which trades as a global commodity, and owns a 55% interest in an alumina refinery joint venture. We are organized as a holding company with each of our operating primary aluminum smelters managed and operated as a separate facility reporting to our corporate headquarters. Our three operating primary aluminum smelters and our bauxite and alumina refinery each meet the definition of an operating segment We evaluated the similar economic and other characteristics, including similar products, production processes, customers and distribution and have aggregated our four operating segments into one reportable segment. In addition, all of our operating segments share several key economic factors inherent in their common products and production processes. For example, all of our facilities' revenue is based on market pricing. Our facilities have a similar customer base and utilize similar distribution methods to ship products. In 2024, we determined that our fully curtailed Hawesville facility no longer met the definition of an operating segment. Our chief executive officer is our chief operating decision maker (CODM) and evaluates performance based on Segment EBITDA (Earnings before interest, taxes, depreciation, and amortization). Specifically, the CODM reviews Segment EBITDA to develop forecasting and evaluate overall profitability performance.
A reconciliation of our consolidated assets to the total of primary aluminum segment assets and capital expenditures is provided below.
Segment assets (1)
202420232022
Aluminum$1,896.6 $1,808.1 $1,432.4 
Corporate, unallocated42.8 38.4 39.6 
Total assets$1,939.4 $1,846.5 $1,472.0 
Capital expenditures$82.3 $95.0 $86.3 
(1)Segment assets include accounts receivable, due from affiliates, prepaid and other current assets, leases - right of use assets, inventory, intangible assets and property, plant and equipment, net; the remaining assets are unallocated corporate assets.
Geographic information
Our net sales are attributed to geographic area based on the location of the selling operation. Included in the consolidated financial statements are the following amounts related to geographic locations:
 202420232022
Net sales: (1)
   
United States$1,427.0 $1,358.6 $1,737.2 
Iceland793.3 826.8 1,040.1 
Total Net sales
2,220.3 2,185.4 2,777.3 
Long-lived assets: (2)
   
United States$233.6 $219.1 $244.9 
Iceland526.4 529.4 491.0 
Jamaica255.2 275.8 — 
Other50.6 55.1 58.3 
(1)Includes sales of primary aluminum, scrap aluminum and alumina, and purchased aluminum and alumina.
(2)Includes long-lived assets other than financial instruments and deferred taxes.
Major customer information
Revenues from one customer in 2024 and 2023 and two customers in 2022 exceeded 10% of our net sales. A loss of these customers could have a material adverse effect on our results of operations. The net sales related to the customers is as follows:
Year Ended December 31,
202420232022
Glencore$1,312.1 $1,612.1 $1,671.1 
Southwire— — 331.3 
The following table presents our segment information to reconcile to Segment EBITDA for the periods indicated and, because we only have one segment, our net income (loss) attributable to Century stockholders is identical to the information presented in the Consolidated Statements of Operations:
Year Ended December 31,
202420232022
Net sales$2,220.3 $2,185.4 $2,777.3 
Segment Cost of goods sold(1)
(2,014.7)(2,056.9)(2,597.0)
IRA Credit - Cost of goods sold(2)
89.7 56.5 — 
Asset impairment
— — (159.4)
Other segment items(3)
(25.4)(55.7)(12.9)
Segment EBITDA
269.9 129.3 8.0 
Depreciation, depletion, and amortization - Cost of goods sold(86.5)(80.7)(76.4)
Selling, general and administrative expenses(56.8)(44.3)(37.5)
Interest expense - affiliates(6.7)(1.8)— 
Interest expense(36.4)(33.7)(29.3)
Interest income2.1 2.0 0.5 
Net gain (loss) on forward and derivative contracts - nonaffiliates2.5 (62.4)210.4 
Net gain (loss) on forward and derivative contracts - affiliates(0.5)0.6 (13.3)
Bargain purchase gain245.9 — — 
Other(4)
(9.7)24.1 (29.1)
Income tax benefit (expense)(3.2)14.6 (47.4)
Net income (loss)320.6 (52.3)(14.1)
Net loss attributable to noncontrolling interests
16.2 9.2 — 
Net income (loss) attributable to Century stockholders, as reported$336.8 $(43.1)$(14.1)
(1)Includes raw materials, labor, energy, and other direct cost of goods sold.
(2)Advanced production credit related to Section 45X of the Inflation Reduction Act.
(3)Includes freight costs and FIFO inventory adjustment.
(4)Includes equity in losses or earnings from joint ventures and inventory revaluation to lower of cost or net realizable value.