PSA International Pte Ltd Annual Report 2010
N otes to the Financial Statements
Year ended 31 December 2010
Critical accounting estimates and judgements
The accounting policies that are deemed critical to the amounts recognised in the financial statements, in terms of materiality, or which involve a significant degree of judgement and estimation, are discussed below.
Impairment of property, plant and equipment and intangible assets
The Group has made substantial investments in tangible and intangible non-current assets in its port business. Changes in technology or changes in the intended use of these assets may cause the estimated period of use or value of these assets to change.
Assets that have an infinite useful life are tested for impairment annually. Assets that are subject to depreciation and amortisation are reviewed to determine whether there is any indication that the carrying value of these assets may not be recoverable and have suffered an impairment loss. If any such indication exists, the recoverable amounts of the assets are estimated in order to determine the extent of the impairment loss, if any. The recoverable amount is the higher of an asset’s fair value less costs to sell and value in use. Such impairment loss is recognised in the income statement.
Management judgement is required in the area of asset impairment, particularly in assessing: (1) whether an event has occurred that may indicate that the related asset values may not be recoverable; (2) whether the carrying value of an asset can be supported by the net present value of future cash flows which are estimated based upon the continued use of the asset in the business; (3) the appropriate key assumptions to be applied in preparing cash flow projections including whether these cash flow projections are discounted using an appropriate rate.
Changing the assumptions selected by management to determine the level, if any, of impairment, including the discount rates or the growth rate assumptions in the cash flow projections could materially affect the net present value used in the impairment test and as a result affect the Group’s results of operations.
Depreciation and amortisation
Depreciation and amortisation of non-financial assets constitute substantial operating costs for the Group. The costs of these non-financial assets are charged as depreciation/amortisation expense over the estimated useful lives of the respective assets using the straight-line method. The Group periodically reviews changes in technology and industry conditions, asset retirement activity and residual values to determine adjustments to estimated remaining useful lives and depreciation rates.
Actual economic lives may differ from estimated useful lives. Periodic reviews could result in a change in depreciable lives and therefore depreciation expense in future periods.
Residual values of the port assets are estimated after considering the price that could be recovered from the sale of the port assets and the expected age and condition at the end of their useful lives, after deducting the estimated costs of disposal.