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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, 2023	Mar. 31, 2022	Mar. 31, 2021
Geographic Concentration Risk | Non-US
Segment Reporting Information [Line Items]
Gross sales percentage (as percent)	30.00%	33.00%	33.00%
Customer A | North America Fiber Cement | Customer Concentration Risk
Segment Reporting Information [Line Items]
Net sales	$ 450.1	$ 418.3	$ 347.3
Gross sales percentage (as percent)	12.00%	12.00%	12.00%

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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