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Property, Plant and Equipment (Tables) | 12 Months Ended
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Dec. 31, 2023
Property, Plant and Equipment [Abstract] |
Schedule of property, plant and equipment | The basis for depreciation of the cost of an item and their estimated useful lives based on their usage is as follows:
Asset |  | Basis |  | Rate / term
Land improvements and site improvements |  | Declining balance |  | 10 | %
Buildings and building improvements |  | Straight-line |  | 15 - 30 years
Yard, automotive and office equipment |  | Declining balance |  | 20 - 30%
Computer software and equipment |  | Straight-line |  | 3 - 5 years
Leasehold improvements |  | Straight-line |  | Lesser of lease term or economic life
At December 31, 2023 |  | Cost |  | Accumulated depreciation |  | Net book value
Land |  | $ | 549.2 |  |  | $ | — |  |  | $ | 549.2 |
Buildings and improvements |  | 491.1 |  |  | (236.1) |  |  | 255.0 |
Yard, automotive and office equipment |  | 306.0 |  |  | (117.5) |  |  | 188.5 |
Computer software and equipment |  | 108.2 |  |  | (79.5) |  |  | 28.7 |
Leasehold improvements |  | 160.0 |  |  | (37.3) |  |  | 122.7 |
Assets under development |  | 56.8 |  |  | — |  |  | 56.8 |
|  | $ | 1,671.3 |  |  | $ | (470.4) |  |  | $ | 1,200.9 |
At December 31, 2022 |  | Cost |  | Accumulated depreciation |  | Net book value
Land |  | $ | 169.4 |  |  | $ | — |  |  | $ | 169.4 |
Buildings and improvements |  | 444.4 |  |  | (220.5) |  |  | 223.9 |
Yard, automotive and office equipment |  | 124.4 |  |  | (83.1) |  |  | 41.3 |
Computer software and equipment |  | 83.0 |  |  | (72.5) |  |  | 10.5 |
Leasehold improvements |  | 23.4 |  |  | (16.7) |  |  | 6.7 |
Assets under development |  | 7.3 |  |  | — |  |  | 7.3 |
|  | $ | 851.9 |  |  | $ | (392.8) |  |  | $ | 459.1 |

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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 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 360 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482099/360-10-50-1 + Details
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