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v3.26.1

Segment Information - Schedule of Operating Segments (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Jun. 30, 2026 | Jun. 30, 2025
Segment Reporting [Line Items] |  |
Net sales | $ 1,474.6 | $ 899.9
Cost of goods sold | 925.9 | 563.0
Gross profit | 548.7 | 336.9
Selling, general and administrative expenses | 295.4 | 156.1
Restructuring expenses | 5.2 | 0.0
Operating income | 217.7 | 138.6
Reconciliation to Consolidated Net Income [Abstract] |  |
Operating income (loss) | 217.7 | 138.6
Interest, net | (61.5) | (37.8)
Other income (expense), net | 1.1 | (11.1)
Income tax expense | (53.0) | (27.1)
Net income | 104.3 | 62.6
Operating Segments |  |
Segment Reporting [Line Items] |  |
Net sales | 1,474.6 | 899.9
Cost of goods sold | 925.9 | 563.0
Gross profit | 548.7 | 336.9
Selling, general and administrative expenses | 246.0 | 118.4
Restructuring expenses | 5.2 |
Other expenses | 18.9 | 4.4
Operating income | 278.6 | 214.1
Reconciliation to Consolidated Net Income [Abstract] |  |
Operating income (loss) | 278.6 | 214.1
General Corporate and R&D |  |
Segment Reporting [Line Items] |  |
Operating income | (60.9) | (75.5)
Reconciliation to Consolidated Net Income [Abstract] |  |
Operating income (loss) | (60.9) | (75.5)
Siding & Trim |  |
Segment Reporting [Line Items] |  |
Net sales | 859.8 | 641.8
Siding & Trim | Operating Segments |  |
Segment Reporting [Line Items] |  |
Net sales | 859.8 | 641.8
Cost of goods sold | 525.7 | 401.3
Gross profit | 334.1 | 240.5
Selling, general and administrative expenses | 105.4 | 76.0
Restructuring expenses | 0.0 |
Other expenses | 13.8 | 3.3
Operating income | 214.9 | 161.2
Reconciliation to Consolidated Net Income [Abstract] |  |
Operating income (loss) | 214.9 | 161.2
Deck, Rail & Accessories |  |
Segment Reporting [Line Items] |  |
Net sales | 305.1 | 0.0
Deck, Rail & Accessories | Operating Segments |  |
Segment Reporting [Line Items] |  |
Net sales | 305.1 |
Cost of goods sold | 208.2 |
Gross profit | 96.9 |
Selling, general and administrative expenses | 92.1 |
Restructuring expenses | 5.2 |
Other expenses | 2.9 |
Operating income | (3.3) |
Reconciliation to Consolidated Net Income [Abstract] |  |
Operating income (loss) | (3.3) |
Australia & New Zealand |  |
Segment Reporting [Line Items] |  |
Net sales | 153.3 | 121.6
Australia & New Zealand | Operating Segments |  |
Segment Reporting [Line Items] |  |
Net sales | 153.3 | 121.6
Cost of goods sold | 86.1 | 69.3
Gross profit | 67.2 | 52.3
Selling, general and administrative expenses | 19.1 | 14.2
Restructuring expenses | 0.0 |
Other expenses | 1.3 | 0.3
Operating income | 46.8 | 37.8
Reconciliation to Consolidated Net Income [Abstract] |  |
Operating income (loss) | 46.8 | 37.8
Europe |  |
Segment Reporting [Line Items] |  |
Net sales | 156.4 | 136.5
Europe | Operating Segments |  |
Segment Reporting [Line Items] |  |
Net sales | 156.4 | 136.5
Cost of goods sold | 105.9 | 92.4
Gross profit | 50.5 | 44.1
Selling, general and administrative expenses | 29.4 | 28.2
Restructuring expenses | 0.0 |
Other expenses | 0.9 | 0.8
Operating income | 20.2 | 15.1
Reconciliation to Consolidated Net Income [Abstract] |  |
Operating income (loss) | $ 20.2 | $ 15.1

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