borrowing costs in respect of it.
   3.4
   Presentation and classification
   E&E assets should be classified consistently as either tangible or intangible assets in
   accordance with the nature of the assets acquired. [IFRS 6.15]. For example, drilling rights
   may be presented as intangible assets, whereas vehicles and drilling rigs are tangible
   assets. A tangible asset that is used in developing an intangible asset should still be
   presented as a tangible asset. However, to the ‘extent that a tangible asset is consumed
   in developing an intangible asset, the amount reflecting that consumption is part of the
   cost of the intangible asset’. For example, the depreciation of a drilling rig would be
   capitalised as part of the intangible E&E asset that represents the costs incurred on
   active exploration projects. [IFRS 6.16, BC33]. This assessment requires judgement and we
   observe different classification practices across the mining industry and the oil and gas
   industry.
   3.4.1
   Reclassification of E&E assets
   E&E assets should no longer be classified as such when ‘technical feasibility and
   commercial viability of extracting a mineral resource are demonstrable’.
   3224 Chapter 39
   Determining when technical feasibility and commercial viability have been
   demonstrated may involve significant judgement, particularly in relation to complex
   assets or projects where feasibility assessment may be ongoing over an extended period
   of time: for example Liquefied Natural Gas (LNG) projects, unconventional assets, large
   scale, technically challenging projects, or where significant upfront investment in long
   lead items is required.
   A final investment decision being approved is often a common signal that technical
   feasibility and commercial viability have been determined. However, absent this,
   other factors may also need to be considered, such as the booking of significant
   quantities of commercial reserves, approval of budgeted expenditure to commence
   commercial development activities or the actual commencement of expenditure on
   development activities. It should be noted that both technical feasibility and
   commercial viability must be demonstrated before an asset can be transferred out
   of E&E. Activities that occur prior to this point which are aimed at assessing the
   viability of a resource, may still be regarded as E&E in nature and must be accounted
   for accordingly.
   Before reclassification, E&E assets should be assessed for impairment individually or as
   part of a cash-generating unit and any impairment loss should be recognised. [IFRS 6.17].
   3.5 Impairment
   In some cases, and particularly in exploration-only entities, E&E assets do not
   generate cash inflows and there is insufficient information about the mineral
   resources in a specific area for an entity to make reasonable estimates of an E&E
   asset’s recoverable amount. This is because the exploration for and evaluation of the
   mineral resources has not reached a stage at which information sufficient to estimate
   future cash flows is available to the entity. Without such information, it is not possible
   to estimate either fair value less costs of disposal (‘FVLCD’) or value in use (‘VIU’), the
   two measures of recoverable amount in IAS 36. Therefore, without some sort of
   alternate impairment assessment approach, this would have led to immediate write-
   off of exploration expenditure.
   Therefore, modifications were made to the impairment testing approach. Under IFRS 6,
   the assessment of impairment should be triggered by changes in facts and
   circumstances. However once an entity had determined that there is an impairment
   trigger for an E&E asset, IAS 36 should be used to measure, present and disclose that
   impairment in the financial statements. This is subject to the special requirements with
   respect to the level at which impairment is assessed. [IFRS 6.BC37].
   IFRS 6 makes two important modifications to IAS 36:
   • it defines separate impairment testing ‘triggers’ for E&E assets; and
   • it allows groups of cash-generating units to be used in impairment testing.
   [IFRS 6.18-20].
   Extractive
   industries
   3225
   3.5.1
   Impairment testing ‘triggers’
   E&E assets should be assessed for impairment when facts and circumstances suggest
   that the carrying amount of an E&E asset may exceed its recoverable amount. [IFRS 6.18].
   Under IFRS 6 one or more of the following facts and circumstances could indicate that
   an impairment test is required. The list is not intended to be exhaustive:
   (a) the period for which the entity has the right to explore in the specific area has
   expired during the period or will expire in the near future, and is not expected to
   be renewed;
   (b) substantive expenditure on further exploration for and evaluation of mineral
   resources in the specific area is neither budgeted nor planned;
   (c) exploration for and evaluation of mineral resources in the specific area have not
   led to the discovery of commercially viable quantities of mineral resources and the
   entity has decided to discontinue such activities in the specific area; and
   (d) sufficient data exist to indicate that, although a development in the specific area is
   likely to proceed, the carrying amount of the E&E asset is unlikely to be recovered
   in full from successful development or by sale. [IFRS 6.20].
   Finding that an exploratory or development well does not contain oil or gas in
   commercial quantities (i.e. finding a ‘dry hole’) is not listed in IFRS 6 as an impairment
   indicator. If finding a dry hole marks the end of budgeted or planned exploration
   activity, indicator (b) above would require impairment testing under IAS 36.
   Similarly, if the dry hole led to a decision that activities in the area would be
   discontinued, indicator (c) would require that an impairment test be performed, and
   indicator (d) requires an entity to do an impairment test if it is unlikely that it will
   recover the E&E costs from successful development or sale. However, absent one of
   these indicators being met, in isolation, drilling a dry hole would not necessarily
   trigger an impairment test. For example, if the first well in a three well campaign is a
   dry hole, but the entity still intends to drill the remaining two wells, an impairment
   trigger may not exist.
   3.5.2
   Specifying the level at which E&E assets are assessed for impairment
   When deciding the level at which E&E assets should be assessed, rather than introduce
   a special CGU for E&E assets, IFRS 6 allows CGUs to be aggregated in a way consistent
   with the approach applied to goodwill in IAS 36. [IFRS 6.BC40-BC47]. Therefore, an entity
   should determine an accounting policy for allocating E&E assets to CGUs or to CGU
   groups for the purpose of assessing them for impairment. [IFRS 6.21]. Each CGU or group
   of CGUs to which an E&E asset is allocated should not be larger than an operating
   segment (which is smaller than a reportable segment) determined in accordance with
   IFRS 8 – Operating Segments. [IFRS 6.21]. See also Chapter 20 at 8.1.4.
   Hence, the level identified by an entity for the purposes of testing E&E assets for
/>   impairment may be comprised of one or more CGUs. [IFRS 6.22].
   3226 Chapter 39
   3.5.3
   Cash-generating units comprising successful and unsuccessful E&E
   projects
   IFRS 6 does not specifically address whether successful and unsuccessful E&E projects can
   be combined in a single CGU (which will occur under full cost accounting and may occur
   under area of interest accounting). There are some issues to consider before doing this:
   • Regardless of whether there is an impairment trigger (see 3.5.1 above), IFRS 6
   requires E&E assets to be tested for impairment before reclassification when the
   technical feasibility and commercial viability of extracting a mineral resource are
   demonstrable. [IFRS 6.17]. That means that the successful conclusion of a small
   E&E project and its reclassification out of E&E would result in an impairment
   test of a much larger CGU and possible recognition of an impairment loss on that
   larger CGU.
   • Successful E&E projects should be reclassified as tangible or intangible assets
   under IAS 16 and IAS 38, respectively. [IFRS 6.15]. Therefore, a CGU comprising
   both successful and unsuccessful E&E projects would be subject to the impairment
   triggers in both IFRS 6 and IAS 36. This would significantly increase the frequency
   of impairment testing. [IFRS 6.20, IAS 36.8-17].
   • An entity should carefully consider the consequences of including several E&E
   projects in a CGU, because the unsuccessful conclusion of one project would
   usually trigger an impairment test of the entire CGU. [IFRS 6.20].
   3.5.4
   Order of impairment testing
   CGUs often contain other assets as well as E&E assets. When developing IFRS 6, ED 6
   specifically stated that such other assets should be tested for impairment first, in
   accordance with IAS 36, before testing the CGU inclusive of the E&E assets.82 However,
   IFRS 6 does not specifically address this topic. Despite this, we believe that as the
   impairment test is completed in accordance with IAS 36, and a similar approach is
   adopted as that applied to goodwill, the order of the impairment testing as set out in
   IAS 36 would apply. That is, an entity would test the underlying assets/CGU without the
   E&E assets first, recognise any write down (if applicable) and then test the CGU/CGU
   group with the E&E assets allocated.
   3.5.5
   Additional considerations if E&E assets are impaired
   In some circumstances an entity that recognises an impairment of an E&E asset must
   also decide whether or not to derecognise the asset because no future economic
   benefits are expected, as illustrated in Example 39.1 below.
   Example 39.1: Impairment losses on E&E assets
   Entity A’s exploration activity in a specific area does not discover oil and/or gas resources. Therefore, A
   recognises an impairment of the cash-generating unit and derecognises the related E&E assets.
   Entity B’s exploration activity in a specific area leads to the discovery of a significant quantity of resources,
   but these are located in a complex reservoir. Therefore, at present the costs of extraction of the discovered
   resources do not justify the construction of the required infrastructure. Nevertheless, B’s management
   believes that the surrounding area has strong potential to yield other discoveries on other geological structures
   and it is considered possible that the required infrastructure will be constructed in the future, although at this
   stage management has no plans to undertake further exploration activity. Entity B recognises an impairment
   of the E&E assets, but since it expects future economic benefits the related E&E assets are not derecognised.
   Extractive
   industries
   3227
   If an entity concludes that production is not technically feasible or commercially viable,
   that provides evidence that the related E&E asset needs to be tested for impairment. It
   is also possible that such evidence may indicate that no future economic benefits are
   expected from such assets and therefore any remaining assets should be derecognised.
   When considering the two examples above, in Entity A’s situation, no oil and/or gas
   resources were discovered and based on current plans, no future economic benefits
   were expected from the related E&E assets so they were derecognised. Whereas in
   Entity B’s situation, while oil and/or gas resources were discovered, extraction was not
   commercially viable at this stage. So while an impairment was recognised, the remaining
   assets were not derecognised as management did expect future economic benefits to
   flow from such assets.
   Although IFRS 6 does not specifically deal with derecognition of E&E assets, the entity
   should derecognise the E&E asset because the asset is no longer in the exploration and
   evaluation phase and hence outside the scope of IFRS 6 and other asset standards such as
   IAS 16 and IAS 38 would require derecognition under those circumstances. Once
   derecognised, the costs of an E&E asset that have been written off cannot be re-
   recognised as part of a new E&E asset, so unlike an impairment, the write off is permanent.
   3.5.6
   Income statement treatment of E&E write downs – impairment or
   exploration expense
   In some circumstances, it may be unclear whether an E&E asset is impaired, or whether
   a write off of unsuccessful exploration is required. In an unconventional project, or in
   circumstances where costs have been carried forward for some time pending
   determination of technical feasibility and commercial viability, judgement will be
   required in concluding on the most appropriate income statement presentation. Key
   considerations may include whether the objectives of drilling or other expenditure
   programs have been met, whether the indicative impairment triggers in IFRS 6 have
   been met, and management’s future intentions for the asset.
   3.5.7
   Reversal of impairment losses
   Any impairment loss on an E&E asset recognised in accordance with IFRS 6 needs to
   be reversed if there is evidence that the loss no longer exists or has decreased. The
   entity must apply the requirements specified in IAS 36 for reversing an impairment loss
   (see Chapter 20 at 11). [IFRS 6.BC48, IAS 36.109-123].
   3.6 Disclosure
   To identify and explain ‘the amounts recognised in its financial statements arising
   from the exploration for and evaluation of mineral resources’, [IFRS 6.23], an entity
   should disclose:
   (a) its accounting policies for exploration and evaluation expenditures including the
   recognition of exploration and evaluation assets; and
   (b) the amounts of assets, liabilities, income and expense and operating and investing
   cash flows arising from the exploration for and evaluation of mineral resources.
   [IFRS 6.24].
   The extract below from Tullow Oil’s 2017 financial statements illustrates the disclosures
   required by IFRS 6.
   3228 Chapter 39
   Extract 39.6: Tullow Oil plc (2017)
   GROUP INCOME STATEMENT [extract]
   YEAR ENDED 31 DECEMBER 2017
   2017 2016
   Notes
   $m
   $m
   Continuing activities
   Sales revenue
   2
   1,722.5
   1,269.9
   Other operating income – lost production insurance proceeds
   6
   162.1
   90.1
   Cost of sales
   4
   (1,069.3)
   (813.1)
   Gross Profit
   815.3
   546.9
   Administrative expenses
   4
   (95.3)
   (116.4)
   Restructuring cost
   4
   (14.5)
   (12.3)
   Loss on disposal
   9
   (1.6)
   (3.4)
   Goodwill impairment
   –
   (164.0)
   Exploration costs written off
   10
   (143.4)
   (723.0)
   Impairment of property, plant and equipment, net
   11
   (539.1)
   (167.6)
   Provision for onerous service contracts, net
   22
   1.0
   (114.9)
   Operating profit/(loss)
   22.4
   (754.7)
   (Loss)/gain on hedging instruments
   20
   (11.8)
   18.2
   Finance revenue
   5
   42.0
   26.4
   Finance costs
   5
   (351.7)
   (198.2)
   Loss from continuing activities before tax
   (299.1)
   (908.3)
   Income tax credit
   7
   110.6
   311.0
   Loss for the year from continuing activities
   (188.5)
   (597.3)
   Attributable to:
   Owners of the Company
   (189.5)
   (599.9)
   Non-controlling interest
   25
   1.0
   2.6
   (188.5)
   (597.3)
   Loss per ordinary share from continuing activities
   8
   ¢
   ¢
   Basic
   (14.7)
   (55.8)
   Diluted
   (14.7)
   (55.8)
   GROUP BALANCE SHEET [extract]
   AS AT 31 DECEMBER 2017
   2017
   2016
   Notes
   $m
   
 
 International GAAP® 2019: Generally Accepted Accounting Practice under International Financial Reporting Standards Page 638