CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Comprehensive income:
Net income	$ 327.0	$ 22.4
Defined benefit plans and other postretirement benefits:
Net gain arising during the period	8.9	0.0
Amortization of prior service benefit during the period	0.1	0.1
Amortization of net loss during the period	2.0	1.6
Other comprehensive income before income tax effect	11.0	1.7
Income tax effect	0.0	0.0
Other comprehensive income	11.0	1.7
Comprehensive income	338.0	24.1
Comprehensive loss attributable to noncontrolling interests	(6.2)	(7.3)
Comprehensive income attributable to Century stockholders	$ 344.2	$ 31.4