Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Components of Basic and Diluted Earnings per Share [Abstract]
Net Income (Loss)	$ 121.5	$ 184.0	$ 161.5
Weighted-average shares outstanding - basic (in shares)	52.8	52.6	52.4
Effect of dilutive securities (in shares)	1.0	1.3	1.0
Weighted-average shares outstanding - diluted (in shares)	53.8	53.9	53.4
Earnings per share:
Net earnings per share - basic (in dollars per share)	$ 2.3	$ 3.5	$ 3.08
Net earnings per share - diluted (in dollars per share)	$ 2.26	$ 3.42	$ 3.03
Antidilutive securities excluded from computation of earnings per share (in shares)	0.0	0.0	0.0

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

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References

+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

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+ Details