| 2.6 | Property, plant and equipment |
Property, plant and equipment, are stated at historical costs less accumulated depreciation and any accumulated impairment losses, except for those acquired prior to 30 June 2003, which are stated at deemed cost less accumulated depreciation and any accumulated impairment losses.
The historical costs of property, plant and equipment comprise its purchase price, including import duties and non-refundable purchase taxes, and any directly attributable costs of bringing the asset to its working condition and location for its intended use. Expenditure incurred after terms of property, plant and equipment have been put into operation, such as repairs and maintenance, is normally charged to the statement of comprehensive income in the period in which it is incurred. In situations where the recognition criteria are satisfied, the expenditure for a major inspection is capitalised in the carrying amount of the assets as a replacement. Where significant parts of property, plant and equipment are required to be replaced at intervals, the Group recognises such parts as individual assets with specific useful lives and depreciates them accordingly.
Depreciation
Depreciation is computed on a straight-line basis to write down the cost of each asset to its residual value over its estimated useful lives as follows:
| Estimated useful lives | ||
|
Buildings |
15 to 35 years | |
|
Office equipment, furniture and fixtures |
3 to 11 years | |
|
Motor vehicles |
4 to 8 years | |
|
Leasehold improvements |
Over the shorter of the remaining term of the lease and the useful lives |
The residual values, depreciation method and useful lives are reviewed periodically to ensure that the method and period of depreciation are consistent with the expected pattern of economic benefits from items of property, plant and equipment.
Assets under construction mainly represent buildings under construction, which are stated at cost less any impairment losses and are not depreciated, except for those acquired prior to 30 June 2003, which are stated at deemed cost less any accumulated impairment losses. Cost comprises the direct costs of construction and capitalised borrowing costs on related borrowed funds during the period of construction. Assets under construction are reclassified to the appropriate category of property, plant and equipment, investment properties or other assets when completed and ready for use.
Impairment and gains or losses on disposals
Property, plant and equipment are reviewed for impairment losses whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. An impairment loss is recognised in net profit for the amount by which the carrying amount of the asset exceeds its recoverable amount, which is the higher of an asset’s net selling price and value in use.
The gain or loss on disposal of an item of property, plant and equipment is the difference between the net sales proceeds and the carrying amount of the relevant asset, and is recognised in net profit.