CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions		3 Months Ended
		Mar. 31, 2026	Mar. 31, 2025
Net sales
Total net sales		$ 649.2	$ 633.9
Cost of goods sold	[1]	530.4	576.6
Gross profit		118.8	57.3
Selling, general and administrative expenses		25.8	12.5
Gain on the sale of Hawesville		(287.9)	0.0
Other operating expenses - net		6.9	2.0
Operating income		374.0	42.8
Interest income		3.1	1.8
Gain on insurance proceeds - net		33.0	0.0
Other loss - net		(5.5)	(3.4)
Income before income taxes		328.8	24.0
Income tax expense		(1.8)	(1.6)
Net income		327.0	22.4
Net loss attributable to noncontrolling interests		(10.5)	(7.3)
Net income attributable to Century stockholders		337.5	29.7
Less: net income allocated to participating securities		0.0	1.5
Net income allocated to common stockholders		$ 337.5	$ 28.2
Net income attributable to Century stockholders per common share:
Basic (in dollars per share)		$ 3.41	$ 0.30
Diluted (in dollars per share)		$ 3.23	$ 0.29
Weighted-average common shares outstanding:
Basic (in shares)		99.0	93.3
Diluted (in shares)		104.6	99.2
Related Party
Net sales
Total net sales		$ 305.9	$ 378.7
Cost of goods sold		64.2	88.3
Interest expense		(0.6)	(1.8)
Nonrelated Party
Net sales
Total net sales		343.3	255.2
Interest expense		(9.9)	(10.0)
Net loss on forward and derivative contracts - nonaffiliates		$ (65.3)	$ (5.4)

[1] (1) Purchases from related party were $64.2 million and $88.3 million for the three months ended March 31, 2026 and 2025, respectively.