v3.26.1
Product Warranties - Schedule of Changes in Product Warranty Provision (Details) - USD ($)
$ in Millions
12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward]    
Balance at beginning of period $ 34.2 $ 36.2
Acquired as part of AZEK acquisition 30.8 0.0
Charges to cost of goods sold 7.4 3.9
Settlements made in cash or in kind (8.4) (5.9)
Balance at end of period $ 64.0 $ 34.2