Unaudited condensed consolidated statements of stockholders' equity - amounts - USD ($) $ in Millions	Total	Common stock including paid-in capital	Accumulated earnings	Treasury Stock	AOCI
Beginning balance at Dec. 31, 2024	$ 5,956.7	$ 3,937.7	$ 2,203.0	$ 0.0	$ (184.0)
Comprehensive income	130.8		64.5		66.3
Stock-based compensation expense	13.0	13.0
Stock option exercises and other common stock transactions	(2.3)	(2.3)
Ending balance at Mar. 31, 2025	6,098.2	3,948.4	2,267.5	0.0	(117.7)
Beginning balance at Dec. 31, 2025	5,565.0	3,984.8	1,672.8	(75.7)	(16.9)
Comprehensive income	16.5		43.3		(26.8)
Stock-based compensation expense	9.0	9.0
Stock option exercises and other common stock transactions	(1.8)	(1.8)
Ending balance at Mar. 31, 2026	$ 5,588.7	$ 3,992.0	$ 1,716.1	$ (75.7)	$ (43.7)