Segment Information - Capital expenditures and depreciation and amortization expense by segment (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Segment Information
Capital expenditures	$ 27.5	$ 26.8
Depreciation and amortization expense	19.0	19.1
Operating segments | Climate Solutions
Segment Information
Capital expenditures	19.9	16.0
Depreciation and amortization expense	11.2	11.9
Operating segments | Performance Technologies
Segment Information
Capital expenditures	7.3	10.8
Depreciation and amortization expense	7.5	7.0
Corporate and eliminations
Segment Information
Capital expenditures	0.3
Depreciation and amortization expense	$ 0.3	$ 0.2