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Product Warranties | 12 Months Ended
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Mar. 31, 2022
Guarantees [Abstract] |
Product Warranties | Product Warranties The Company offers various warranties on its products, including a 30-year limited warranty on certain fiber cement siding products in the United States. A typical warranty program requires the Company to replace defective products within a specified time period from the date of sale. It is possible that future warranty costs could differ from those estimates. The following are the changes in the product warranty provision:
| 31 March
(Millions of US dollars) | 2022 |  | 2021 |  | 2020
Balance at beginning of period | $ | 39.6 |  |  | $ | 42.4 |  |  | $ | 46.6 |
Increase in accrual | 1.9 |  |  | 2.4 |  |  | 0.8 |
Settlements made in cash or in kind | (3.8) |  |  | (5.2) |  |  | (5.0) |
Balance at end of period | $ | 37.7 |  |  | $ | 39.6 |  |  | $ | 42.4 |

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- Definition The entire disclosure for standard and extended product warranties and other product guarantee contracts, including a tabular reconciliation of the changes in the guarantor's aggregate product warranty liability for the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -URI http://asc.fasb.org/topic&trid=2155896 + Details
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