Impairment of Non-current Assets

12 Months Ended

Jun. 30, 2023

Impairment of non-current assets

13 Impairment of

non-current

assets

2023

Cash generating unit

Segment

Property,
plant and
equipment

Goodwill and
other intangibles

Equity-
accounted
investment

Total

US$M

Other

Various

–

Total impairment of

non-current

assets

–

Reversal of impairment

–

Net impairment of

non-current

assets – Continuing operations

–

Net impairment of

non-current

assets – Discontinued operations

–

Net impairment of

non-current

assets

–

2022

Cash generating unit

Segment

Property,
plant and
equipment

Goodwill and
other intangibles

Equity-
accounted
investment

Total

US$M

Cerro Colorado

Copper

455

–

455

Other

Various

–

Total impairment of

non-current

assets

515

–

515

Reversal of impairment

–

Net impairment of

non-current

assets – Continuing operations

515

–

515

Net impairment of

non-current

assets – Discontinued operations

–

Net impairment of

non-current

assets

515

–

515

Recognition and measurement

Impairment tests for all

non-financial

assets (excluding goodwill) are performed when there is an indication of impairment. Goodwill is tested for impairment at least annually. Where the asset does not generate cash flows that are independent from other assets, the Group estimates the recoverable amount of the cash generating unit (CGU) to which the asset belongs, being the smallest identifiable group of assets that generates cash inflows that are largely independent of the cash inflows from other assets or groups of assets. If the carrying amount of the asset or CGU exceeds its recoverable amount, the asset or CGU is impaired and an impairment loss is charged to the income statement so as to reduce the carrying amount in the balance sheet to its recoverable amount.

Previously impaired assets (excluding goodwill as impairment losses are not reversed in subsequent periods) are reviewed for possible reversal of previous impairment at each reporting date. Impairment reversal cannot exceed the carrying amount that would have been determined (net of depreciation) had no impairment loss been recognised for the asset or CGU. Such reversal is recognised in the income statement. There were no reversals of impairment in the current or prior year.

How recoverable amount is calculated

The recoverable amount is the higher of an asset’s or CGU’s fair value less cost of disposal (FVLCD) and its value in use (VIU).

Fair value less cost of disposal

FVLCD is an estimate of the amount that a market participant would pay for an asset or CGU, less the cost of disposal. FVLCD for mineral assets is generally determined using independent market assumptions to calculate the present value of the estimated future

post-tax

cash flows expected to arise from the continued use of the asset, including the anticipated cash flow effects of any capital expenditure to enhance production or reduce cost, and its eventual disposal where a market participant may take a consistent view. Cash flows are discounted using an appropriate

post-tax

market discount rate to arrive at a net present value of the asset, which is compared against the asset’s carrying value. FVLCD may also take into consideration other market-based indicators of fair value. FVLCD are based primarily on Level 3 inputs as defined in note 24 ‘Financial risk management’ unless otherwise noted.

Value in use

VIU is determined as the present value of the estimated future cash flows expected to arise from the continued use of the asset in its present form and its eventual disposal or closure. VIU is determined by applying assumptions specific to the Group’s continued use and cannot take into account future development. These assumptions are different to those used in calculating FVLCD and consequently the VIU calculation is likely to give a different result (usually lower) to a FVLCD calculation.

Impairment of

non-current

assets (excluding goodwill)

No material impairment of non-current assets for the year ended 30 June 2023.

Impairment of

non-current

assets relating to the year ended 30 June 2022 are detailed below.

Impairment of Cerro Colorado

The Group recognised a

pre-tax

impairment charge of US$455 million. The impairment charge primarily related to an increase in closure and rehabilitation provision at Cerro Colorado due to additional work required to

re-profile

waste dumps for closure and an increase in scope for the closure activities.

Impairment test for goodwill

The carrying amount of goodwill has been allocated to the CGUs, or groups of CGUs, as follows:


Cash generating unit	2023		2022
	US$M		US$M
Olympic Dam		1,010		1,010
OZ Minerals Limited provisional goodwill		192		–
Other		187		187

Total goodwill		1,389		1,197

For the purpose of impairment testing, goodwill has been allocated to CGUs or groups of CGUs, that are expected to benefit from the synergies of previous business combinations, which represent the level at which management will monitor and manage goodwill.

The Olympic Dam goodwill has been tested for impairment at 31 December 2022, as part of the Olympic Dam CGU. Details of the goodwill impairment test are provided below.

On 2 May 2023, the Group acquired OZ Minerals Limited (OZL) (refer to note 29 ‘Business combination’ for details). The goodwill arising from the acquisition of US$192 million represents the provisional amount, which could not be reliably allocated to a CGU or group of CGUs at 30 June 2023. There were no indicators of impairment during the period from acquisition date to 30 June 2023 to suggest that the provisional goodwill had been impaired. Therefore, as at 30 June 2023, this goodwill has not yet been subject to any impairment testing.

Goodwill held by other CGUs is US$187 million (2022: US$187 million). This represents less than one per cent of net assets at 30 June 2023 (2022: less than one per cent). There was no impairment of other goodwill in the year to 30 June 2023 (2022: US$ nil).


Olympic Dam goodwill
Impairment test conclusion		The Group performed an impairment test of the Olympic Dam CGU, including goodwill, as at 31 December 2022 and an impairment charge was not required. A goodwill impairment test was not required at 30 June 2023 as there were no indicators of impairment.

How did the goodwill arise?		Goodwill arose on the acquisition of WMC Resources Ltd in June 2005.

Segment		Olympic Dam is part of the Copper reportable segment.

How were the valuations calculated?		FVLCD methodology using DCF techniques has been applied in determining the recoverable amount of Olympic Dam.

Significant assumptions and sensitivities		The valuation of Olympic Dam exceeded its carrying amount by approximately US$4.2 billion (2022: US$2.4 billion) and is most sensitive to changes in copper and gold commodity prices, production volumes, operating costs and discount rates. The valuation applied a post-tax real discount rate of 6.5 per cent (2022: 6.5 per cent). Changes in copper and gold commodity price forecasts, estimated production volumes and operating costs and discount rates in the period between 31 December 2022 and 30 June 2023, including an increase to the discount rate applied to Olympic Dam to 7.0 per cent, did not result in an indicator of impairment. Further, it is considered that there are no reasonably possible changes in copper and gold price forecasts, operating cost estimates or the discount rate that would, in isolation, result in the estimated recoverable amount being equal to the carrying amount. A production volume decrease of 9.9 per cent (2022: 6 per cent) across all commodities (copper, gold, silver and uranium) would, in isolation, result in the estimated recoverable amount being equal to the carrying amount. Typically, changes in any one of the aforementioned assumptions (including operating performance) would be accompanied by a change in another assumption which may have an offsetting impact. Action is usually taken to respond to adverse changes in assumptions to mitigate the impact of any such change. Key judgements and estimates that have been applied in the FVLCD valuation are disclosed further below.

Key judgements and estimates

Judgements:

Assessment of indicators of impairment or impairment reversal

and

the determination of CGUs for impairment purposes require significant management judgement.

Indicators of impairment may include changes in the Group’s operating and economic assumptions, including those arising from changes in reserves or mine planning, updates to the Group’s commodity supply, demand and price forecasts, or the possible additional impacts from emerging risks including those related to climate change and the transition to a low-carbon economy.

Climate change

The Group’s impairment assessments may be impacted by climate change

and

the transition to a low-carbon economy. Further detail is provided in note 16 ‘Climate Change’.

Estimates:

The Group performs a recoverable amount determination for an asset or CGU

when

there is an indication of impairment or impairment reversal.

When the recoverable amount is measured by reference to FVLCD, in the absence of quoted market prices or binding sale agreement, estimates are made regarding the present value of future

post-tax

cash flows. These estimates are made from the perspective of a market participant and include prices, future production volumes, operating costs, capital expenditure, closure and rehabilitation costs, taxes, risking factors applied to cash flows and discount rates. The cash flow forecasts may include net cash flows expected from the extraction, processing and sale of material that does not currently qualify for inclusion in reserves. Reserves and resources are included in the assessment of FVLCD to the extent that it is considered probable that a market participant would attribute value to them.

When recoverable amount is measured using VIU, estimates are made regarding the present value of future cash flows based on internal budgets and forecasts and life of asset plans. Key estimates are similar to those identified for FVLCD, although some assumptions and values may differ as they reflect the perspective of management rather than a market participant.

All estimates require judgements and assumptions and are subject to risk and uncertainty that may be beyond the control of the Group; hence, there is a possibility that changes in circumstances will materially alter projections, which may impact the recoverable amount of an asset or CGU at each reporting date. While no indicators of impairment, or impairment reversal, were identified across the Group’s CGUs at 30 June 2023, the carrying value of the Spence and Nickel West CGUs are the most susceptible to changes in the significant estimates outlined below in the next reporting period.

The significant estimates impacting the Group’s recoverable amount determinations are:

Commodity prices

Commodity prices were based on latest internal forecasts which assume short-term market prices will revert to the Group’s assessment of long-term price. These price forecasts reflect management’s long-term views of global supply and demand, built upon past experience of the commodity markets and are benchmarked with external sources of information such as analyst forecasts. Prices are adjusted based upon premiums or discounts applied to global price markers to reflect the location, nature and quality of the Group’s production, or to take into account contracted prices.

Future production volumes

Estimated production volumes were based on detailed data and took into account development plans established by management as part of the Group’s long-term planning process. When estimating FVLCD, assumptions reflect all reserves and resources that a market participant would consider when valuing the respective CGU, which in some cases are broader in scope than the reserves that would be used in a VIU test. In determining FVLCD, risk factors may be applied to reserves and resources which do not meet the criteria to be treated as proved.

Cash outflows (including operating costs, capital expenditure, closure and rehabilitation costs and taxes)

Cash outflows are based on internal budgets and forecasts and life of asset plans. Cost assumptions reflect management experience and expectations. Tax assumptions reflect existing and substantively enacted tax and royalty regimes and rates applicable in the jurisdiction of the CGU. In the case of FVLCD, cash flow projections include the anticipated cash flow effects of any capital expenditure to enhance production or reduce cost where a market participant may take a consistent view. VIU does not take into account future development.

Discount rates

The Group uses real

post-tax

discount rates applied to real

post-tax

cash flows. The discount rates are derived using the weighted average cost of capital methodology. Adjustments to the rates are made for any risks that are not reflected in the underlying cash flows, including country risk.