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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (18.6)	$ 129.3
Components of other comprehensive loss:
Actuarial losses related to defined benefit pension plans, net of tax effect	(4.7)	(0.2)
Other comprehensive loss, net of tax effect	(4.7)	(0.2)
Comprehensive (loss) income	$ (23.3)	$ 129.1

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