Property, plant and equipment
Property, plant and equipment are initially measured at cost and after initial recognition, are carried at cost less accumulated depreciation and any accumulated impairment losses. The cost of property, plant and equipment includes expenditures arising directly from the construction or acquisition of the asset, any costs directly attributable to bringing the asset to the location and condition necessary for it to be capable of operating in the manner intended by management and, when the Company has an obligation to remove the asset or restore the site, an estimate of the costs of dismantling and removing the item and restoring the site on which it is located.
The cost of replacing a part of an item is recognized in the carrying amount of the item of property, plant and equipment, if the following recognition criteria are met:
(a) it is probable that future economic benefits associated with the item will flow to the Company, and
(b) the cost can be measured reliably.
The carrying amount of the replaced part is derecognized at the time the replacement part is recognized. The costs of the day-to-day servicing of the item are recognized in profit or loss as incurred.
Items of property, plant and equipment are depreciated from the date they are available for use or, in respect of self-constructed assets, from the date that the asset is completed and ready for use. Other than land, the costs of an asset less its estimated residual value are depreciated. Depreciation of property, plant and equipment is recognized in profit or loss on a straight-line basis, which most closely reflects the expected pattern of consumption of the future economic benefits embodied in the asset, over the estimated useful lives of each component of an item of property, plant and equipment. Leased assets are depreciated over the shorter of the lease term and their useful lives unless it is reasonably certain that the Company will obtain ownership by the end of the lease term. Land is not depreciated.
Each part of an item of property, plant and equipment with a cost that is significant in relation to the total cost of the item is depreciated separately.
The gain or loss arising from the derecognition of an item of property, plant and equipment is included in profit or loss when the item is derecognized.
The estimated useful lives for the current and comparative periods are as follows:
|
Buildings |
3-50 years | |
|
Structures |
4-50 years | |
|
Machinery and equipment |
4-25 years | |
|
Vehicles |
3-20 years | |
|
Tools |
3-10 years | |
|
Furniture and fixtures |
3-20 years | |
|
Lease assets |
3-30 years | |
|
Bearer plants |
20 years |
The estimated residual value, useful lives and the depreciation method are reviewed at least at the end of each reporting period and, if expectations differ from previous estimates, the changes are accounted for as changes in accounting estimates.