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v3.25.1

Segment and Geographic Information, Net Sales, Significant Expenses by Segment (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2023
Segment Information [Abstract] |  |  |
Net sales | $ 2,583.5 | $ 2,407.8 | $ 2,297.9
Cost of sales | 1,939.7 | 1,882.2 | 1,908.5
Gross profit | 643.8 | 525.6 | 389.4
Selling, general and administrative expenses | 332.1 | 273.9 | 234.0
Restructuring expenses | 28.2 | 15.0 | 5.0
Gain on sale of assets | 0.0 | (4.0) | 0.0
Operating income | 283.5 | 240.7 | 150.4
Climate Solutions |  |  |
Segment Information [Abstract] |  |  |
Net sales | 1,440.6 | 1,108.1 | 1,056.1
Performance Technologies |  |  |
Segment Information [Abstract] |  |  |
Net sales | 1,142.9 | 1,299.7 | 1,241.8
Operating Segments |  |  |
Segment Information [Abstract] |  |  |
Net sales | 2,604.3 | 2,429.4 | 2,324.2
Operating Segments | Climate Solutions |  |  |
Segment Information [Abstract] |  |  |
Net sales | 1,440.8 | 1,108.1 | 1,056.7
Cost of sales | 1,024.7 | 811.2 | 816.1
Gross profit | 416.1 | 296.9 | 240.6
Selling, general and administrative expenses | 161.7 | 115.3 | 106.2
Restructuring expenses | 6.0 | 3.0 | 2.2
Operating income | 248.4 | 178.6 | 132.2
Operating Segments | Performance Technologies |  |  |
Segment Information [Abstract] |  |  |
Net sales | 1,163.5 | 1,321.3 | 1,267.5
Cost of sales | 933.1 | 1,091.7 | 1,118.4
Gross profit | 230.4 | 229.6 | 149.1
Selling, general and administrative expenses | 101.9 | 105.9 | 88.7
Restructuring expenses | 20.5 | 12.0 | 2.8
Operating income | 108.0 | 111.7 | 57.6
Inter-segment Sales [Member] |  |  |
Segment Information [Abstract] |  |  |
Net sales | 20.8 | (21.6) | 26.3
Inter-segment Sales [Member] | Climate Solutions |  |  |
Segment Information [Abstract] |  |  |
Net sales | (0.2) | 0.0 | (0.6)
Inter-segment Sales [Member] | Performance Technologies |  |  |
Segment Information [Abstract] |  |  |
Net sales | (20.6) | (21.6) | (25.7)
Corporate and Eliminations [Member] |  |  |
Segment Information [Abstract] |  |  |
Net sales | (20.8) | (21.6) | (26.3)
Cost of sales | (18.1) | (20.7) | (26.0)
Gross profit | (2.7) | (0.9) | (0.3)
Selling, general and administrative expenses | 68.5 | 52.7 | 39.1
Restructuring expenses | 1.7 |  |
Gain on sale of assets |  | (4.0) |
Operating income | $ (72.9) | $ (49.6) | $ (39.4)

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