Operating Segment Information and Concentrations of Risk - Summary of Additional Geographical Information (Details) - USD ($) $ in Millions |
12 Months Ended | ||
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Mar. 31, 2023 |
Mar. 31, 2022 |
Mar. 31, 2021 |
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Segment Reporting Information [Line Items] | |||
Selling, general and administrative expenses | $ 494.0 | $ 461.2 | $ 389.6 |
Research and development costs | 39.6 | 38.0 | 34.3 |
North America Fiber Cement | |||
Segment Reporting Information [Line Items] | |||
Research and development costs | 5.5 | 5.3 | 5.6 |
Asia Pacific Fiber Cement | |||
Segment Reporting Information [Line Items] | |||
Research and development costs | 1.3 | 1.5 | 1.1 |
Europe Building Products | |||
Segment Reporting Information [Line Items] | |||
Research and development costs | 1.7 | 0.9 | 1.6 |
Research and Development | |||
Segment Reporting Information [Line Items] | |||
Selling, general and administrative expenses | 2.2 | 4.1 | 2.9 |
Research and development costs | $ 31.1 | $ 30.3 | $ 26.0 |
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- Definition The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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