Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Operating Segment Information and Concentrations of Risk - Summary of Gross Sales by Major Customers (Details)

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Operating Segment Information and Concentrations of Risk - Summary of Gross Sales by Major Customers (Details) - Sales Revenue, Net - USD ($)
$ in Millions
12 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2022
Geographic Concentration Risk | Non-US      
Segment Reporting Information [Line Items]      
Gross sales percentage (as percent) 30.00% 30.00% 33.00%
Customer A | North America Fiber Cement | Customer Concentration Risk      
Segment Reporting Information [Line Items]      
Net sales $ 558.2 $ 450.1 $ 418.3
Gross sales percentage (as percent) 14.20% 12.00% 12.00%