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Commitments and Contingencies (Details) - claim |  | 1 Months Ended | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 03, 2021 | Sep. 30, 2021 | Mar. 31, 2017 | Mar. 31, 2022 | Mar. 31, 2021 | Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2018
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Number of pending claims |  |  | 352 | 365 | 360 | 393 | 332 | 336
New Zealand | Subsidiaries | New Zealand Weathertightness |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Number of claims |  |  | 4 |  |  |  |  |
Number of pending claims |  |  | 2 |  |  |  |  |
Appeal hearing date duration |  | 10 days |  |  |  |  |  |
Number of claims settled | 2 |  |  |  |  |  |  |

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