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Property, Plant and Equipment (Tables) | 12 Months Ended
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Mar. 31, 2021
Property, Plant and Equipment [Abstract] |
Components of Property, Plant and Equipment | Property, plant and equipment consist of the following components:
| 31 March
(Millions of US dollars) | 2021 |  | 2020
Land | $ | 85.2 |  |  | $ | 79.0 |
Buildings | 512.8 |  |  | 432.5 |
Machinery and equipment | 1,775.5 |  |  | 1,511.4 |
Construction in progress | 91.8 |  |  | 267.6 |
Property, plant and equipment, at cost | 2,465.3 |  |  | 2,290.5 |
Less accumulated depreciation | (1,093.0) |  |  | (948.8) |
Property, plant and equipment, Net | $ | 1,372.3 |  |  | $ | 1,341.7 |
Summary of Impairment Charges | The following table summarizes the impairment charges:
| Years Ended 31 March
(Millions of US dollars) | 2021 |  | 2020 |  | 2019
North America Fiber Cement | $ | 2.0 |  |  | $ | 44.0 |  |  | $ | 3.0 |
Asia Pacific Fiber Cement | — |  |  | 15.0 |  |  | — |
Europe Building Products | — |  |  | 5.5 |  |  | — |
Other Businesses | — |  |  | — |  |  | 6.1 |
| $ | 2.0 |  |  | $ | 64.5 |  |  | $ | 9.1 |

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- Definition Tabular disclosure for impairment of long-lived assets held and used by an entity which includes a description of the impaired long-lived asset and facts and circumstances leading to the impairment, aggregate amount of the impairment loss and where the loss is located in the income statement, method(s) for determining fair value, and the segment in which the impaired long-lived asset is reported. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.CC) -URI http://asc.fasb.org/extlink&oid=27011434&loc=d3e125687-122742 + Details
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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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