Page 237 - Tata_Chemicals_yearly-reports-2020-2021
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Integrated Report   Statutory Reports  Financial Statements
              1-59                60-146             Consolidated


                        recognised, to reflect new information obtained   value of the replaced part is de-recognised.
                        about facts and circumstances that existed at     Where an item of property, plant and equipment
                        the acquisition date that, if known, would have   comprises  major components  having different
                        affected the amount recognised at that date.      useful lives, these components are accounted for
                                                                          as separate items.
                  2.8   Changes in the proportion held by NCI
                        Changes in the proportion of the equity held by         PPE acquired and put to use for projects are
                        NCI are accounted for as equity transactions. The   capitalised  and  depreciation  thereon  is  included
                        carrying amount of the controlling interests and   in the project cost till the project is ready for
                        NCI are adjusted to reflect the changes in their   commissioning.
                        relative interests in the subsidiaries. Any difference         Depreciation methods, estimated useful lives
                        between the amount by which the NCI are           and residual value
                        adjusted and the fair value of the consideration   Depreciation  on  PPE  (except  leasehold
                        paid or received is recognised directly in equity   improvements) is calculated using the straight-line
                        and attributed to owners of the Group.
                                                                          method to allocate their cost, net of their residual
                  2.9   Property, plant and equipment                     values, over their estimated useful lives. However,
                        An item of property, plant and equipment (‘PPE’)   leasehold  improvements  are  depreciated  on  a
                        is recognised as an asset if it is probable that the   straight-line method over the shorter of their
                        future  economic  benefits  associated  with  the   respective useful lives or the tenure of the lease
                        item will flow to the Group and its cost can be   arrangement. Freehold land is not depreciated.
                        measured reliably.  These  recognition principles         Schedule II to the Act prescribes the useful lives for
                        are applied to the costs incurred initially to acquire   various class of assets. For certain class of assets,
                        an item of PPE, to the pre-operative and trial run   based on technical evaluation and assessment,
                        costs incurred (net of sales), if any and also to the   Management believes that, the useful lives
                        costs incurred subsequently to add to, replace part   adopted by it reflect the periods over which these
                        of, or service it and subsequently carried at cost   assets  are  expected  to  be  used.  Accordingly  for
                        less accumulated depreciation and accumulated     those assets, the useful lives estimated by the
                        impairment losses, if any.                        management are different from those prescribed
                        The cost of PPE includes interest on borrowings   in the Schedule. Management’s estimates of the
                        directly  attributable  to  the  acquisition,     useful lives for various class of PPE are as given
                        construction or production of a qualifying asset. A   below:
                        qualifying asset is an asset that necessarily takes   Asset                   Useful life
                        a substantial period of time to be made ready for   Salt Works, Reservoirs and Pans  1-30 years
                        its intended use or sale. Borrowing costs and other   Plant and Machinery**   1-60 years
                        directly attributable cost are added to the cost   Traction Lines and Railway Sidings  15 years
                        of those assets until such time as the assets are   Factory Buildings         5-60 years
                        substantially ready for their intended use, which   Other Buildings           5-60 years
                        generally coincides with the commissioning date    Water Works                 15 years
                        of those assets.                                   Furniture and Fittings and Office  1-10 years
                        The present value of the expected cost for the     Equipment (including Computers
                        decommissioning  of  an  asset  after  its  use  is   and Data Processing Equipment)
                        included in the cost of the respective asset if the   Vehicles                4-10 years
                        recognition criteria for a provision is met.       Mines and Quarries**       140 years
                        Machinery spares that meet the definition of PPE           **Mines and quarries and certain plant and
                        are capitalised and depreciated over the useful life   machinery which are in relation to the USA
                        of the principal item of an asset.                subsidiaries mine are depreciated using the
                                                                          units-of-production method. Approximately 1%
                        All other repair and maintenance costs,           (previous year 2%) of plant and machinery and
                        including regular servicing, are recognised in    100% (previous year 100%) of mines and quarries
                        the Consolidated Statement of Profit and Loss as   are depreciated using the units-of-production
                        incurred. When a replacement occurs, the carrying   method.


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