v3.25.4

Earnings Per Share - Computation of Basic and Diluted Income Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Numerator:
Net income	$ 774.1	$ 805.1	$ 765.2
Less: Distributed and undistributed earnings allocated to participating securities	(5.2)	(5.6)	(6.2)
Net income attributable to common stockholders	$ 768.9	$ 799.5	$ 759.0
Denominator:
Weighted average common shares outstanding (in shares)	89.3	89.1	89.1
Effect of dilutive securities (in shares)	0.3	0.4	0.4
Diluted common shares outstanding (in shares)	89.6	89.5	89.5
Basic income per common share (in dollars per share)	$ 8.61	$ 8.97	$ 8.52
Diluted income per common share (in dollars per share)	$ 8.58	$ 8.93	$ 8.48

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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