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Financial risk management (Tables) | 12 Months Ended
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Jun. 30, 2021
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Summary of foreign currency risk arising from financial assets and liabilities, which are denominated in currencies other than the US dollar | The following table shows the foreign currency risk arising from financial assets and liabilities, which are denominated in currencies other than the US dollar:
Net financial (liabilities)/assets - by currency of denomination |  | 2021 |  |  | 2020 |
|  | US$M |  |  | US$M |
Australian dollar s |  |  | (4,421 | ) |  |  | (3,788 | )
Chilean peso |  |  | (649 | ) |  |  | (369 | )
British pound sterling |  |  | 535 |  |  |  | 587 |
Euro |  |  | 366 |  |  |  | 619 |
Other |  |  | 128 |  |  |  | (17 | )
Total |  |  | (4,041 | ) |  |  | (2,968 | )
Summary of Financial Assets and Liabilities by Class | The financial assets and liabilities are presented by class in the table below at their carrying amounts.
|  | IFRS 13 Fair value hierarchy Level (1) |  |  | IFRS 9 Classification |  | 2021 US$M |  |  | 2020 US$M Restated |
Current cross currency and interest rate swaps ( 2) |  |  | 2 |  |  | Fair value through profit or loss |  |  | 20 |  |  |  | 3 |
Current other derivative contracts (3) |  |  | 2,3 |  |  | Fair value through profit or loss |  |  | 207 |  |  |  | 45 |
Current other investments (4) |  |  | 1,2 |  |  | Fair value through profit or loss |  |  | 3 |  |  |  | 36 |
Non-current cross currency and interest rate swaps (2) |  |  | 2 |  |  | Fair value through profit or loss |  |  | 1,123 |  |  |  | 2,009 |
Non-current other derivative contracts (3) |  |  | 2,3 |  |  | Fair value through profit or loss |  |  | 152 |  |  |  | 159 |
Non-current investment in share s |  |  | 3 |  |  | Fair value through other comprehensive income |  |  | 31 |  |  |  | 32 |
Non-current other investments (4)(5) |  |  | 1,2,3 |  |  | Fair value through profit or loss |  |  | 304 |  |  |  | 322 |
Total other financial assets |  |  |  |  |  |  |  |  | 1,840 |  |  |  | 2,606 |
Cash and cash equivalents |  |  |  |  |  | Amortised cost |  |  | 15,246 |  |  |  | 13,426 |
Trade and other receivables (6) |  |  |  |  |  | Amortised cost |  |  | 2,363 |  |  |  | 1,633 |
Provisionally priced trade receivables |  |  | 2 |  |  | Fair value through profit or loss |  |  | 3,547 |  |  |  | 1,480 |
Loans to equity accounted investments |  |  |  |  |  | Amortised cost |  |  | – |  |  |  | 40 |
Total financial assets |  |  |  |  |  |  |  |  | 22,996 |  |  |  | 19,185 |
Non-financial assets |  |  |  |  |  |  |  |  | 85,931 |  |  |  | 86,548 |
Total assets |  |  |  |  |  |  |  |  | 108,927 |  |  |  | 105,733 |
Current cross currency and interest rate swaps (2) |  |  | 2 |  |  | Fair value through profit or loss |  |  | – |  |  |  | 165 |
Current other derivative contracts (3) |  |  | 2,3 |  |  | Fair value through profit or loss |  |  | 52 |  |  |  | 60 |
Current other financial liabilities (7) |  |  |  |  |  | Amortised cost |  |  | 78 |  |  |  | – |
Non-current cross currency and interest rate swaps (2) |  |  | 2 |  |  | Fair value through profit or loss |  |  | 586 |  |  |  | 1,414 |
Non-current other financial liabilities (7) |  |  |  |  |  | Amortised cost |  |  | 560 |  |  |  | – |
Total other financial liabilities |  |  |  |  |  |  |  |  | 1,276 |  |  |  | 1,639 |
Trade and other payables (8) |  |  |  |  |  | Amortised cost |  |  | 6,277 |  |  |  | 5,354 |
Provisionally priced trade payables |  |  | 2 |  |  | Fair value through profit or loss |  |  | 574 |  |  |  | 269 |
Bank loans (9) |  |  |  |  |  | Amortised cost |  |  | 2,260 |  |  |  | 2,492 |
Notes and debentures (9) |  |  |  |  |  | Amortised cost |  |  | 14,769 |  |  |  | 21,045 |
Lease liabilities |  |  |  |  |  |  |  |  | 3,896 |  |  |  | 3,443 |
Other (9) |  |  |  |  |  | Amortised cost |  |  | 58 |  |  |  | 68 |
Total financial liabilities |  |  |  |  |  |  |  |  | 29,110 |  |  |  | 34,310 |
Non-financial liabilities |  |  |  |  |  |  |  |  | 24,212 |  |  |  | 19,248 |
Total liabilities |  |  |  |  |  |  |  |  | 53,322 |  |  |  | 53,558 |
(1) | All of the Group’s financial assets and financial liabilities recognised at fair value were valued using market observable inputs categorised as Level 2 with the exception of the specified items in the following footnotes.
(2) | Cross currency and interest rate swaps are valued using market data including interest rate curves (which include the base LIBOR rate and swap rates) and foreign exchange rates. A discounted cash flow approach is used to derive the fair value of cross currency and interest rate swaps at the reporting date.
(3 ) | Includes other derivative contracts of US$121 million (2020: US$179 million) categorised as Level 3. Significant items are derivatives embedded in physical commodity purchase and sales contracts of gas in Trinidad and Tobago with net assets fair value of US$121 million (2020: US$180 million).
(4) | Includes investments held by BHP Billiton Foundation which are restricted and not available for general use by the Group of US$260 million (2020: US$296 million) of which other investment (US Treasury Notes) of US$72 million categorised as Level 1 (2020: US$87 million).
(5) | Includes other investments of US$46 million (2020: US$47 million) categorised as Level 3.
(6) | Excludes input taxes of US$486 million (2020: US$478 million) included in other receivables.
(7) | Includes the discounted settlement liability in relation to the cancellation of power contracts at the Group’s Escondida operations.
(8) | Excludes input taxes of US$176 million (2020: US$145 million) included in other payables.
(9) | All interest bearing liabilities, excluding lease liabilities, are unsecured.
Summary of Carrying Amounts of Group's Notes and Debentures by Currency and Derivatives Which Hedge | The table below shows the carrying amounts of the Group’s notes and debentures by currency and the derivatives which hedge them:
• |  | The carrying amount of the notes and debentures includes foreign exchange remeasurement to period-end rates and fair value adjustments when included in a fair value hedge.
• |  | The breakdown of the hedging derivatives includes remeasurement of foreign currency notional values at period-end rates, fair value movements due to interest rate risk, foreign currency cash flows designated into cash flow hedges, costs of hedging recognised in other comprehensive income, ineffectiveness recognised in the income statement and accruals or prepayments.
• |  | The hedged value of notes and debentures includes their carrying amounts adjusted for the offsetting derivative fair value movements due to foreign currency and interest rate risk remeasurement.
|  |  |  |  | Fair value of derivatives |  |  |  |
2021 US$M |  | Carrying amount of notes and debentures |  |  | Foreign exchange notional at spot rates |  |  | Interest rate risk |  |  | Recognised in cash flow hedging reserve |  |  | Recognised in cost of hedging reserve |  |  | Recognised in the income statement (1) |  |  | Accrued cash flows |  |  | Total |  |  | Hedged value of notes and debentures (2) |
|  | A |  |  | B |  |  | C |  |  | D |  |  | E |  |  | F |  |  | G |  |  | B to G |  |  | A + B + C |
USD |  |  | 6,270 |  |  |  | – |  |  |  | (318 | ) |  |  | – |  |  |  | – |  |  |  | 11 |  |  |  | 77 |  |  |  | (230 | ) |  |  | 5,952 |
GBP |  |  | 3,387 |  |  |  | 435 |  |  |  | (544 | ) |  |  | (81 | ) |  |  | 25 |  |  |  | (34 | ) |  |  | 53 |  |  |  | (146 | ) |  |  | 3,278 |
EUR |  |  | 4,486 |  |  |  | 73 |  |  |  | (418 | ) |  |  | (33 | ) |  |  | 27 |  |  |  | 7 |  |  |  | 49 |  |  |  | (295 | ) |  |  | 4,141 |
CA D |  |  | 626 |  |  |  | 142 |  |  |  | (21 | ) |  |  | (28 | ) |  |  | 25 |  |  |  | (2 | ) |  |  | (2 | ) |  |  | 114 |  |  |  | 747 |
Total |  |  | 14,769 |  |  |  | 650 |  |  |  | (1,301 | ) |  |  | (142 | ) |  |  | 77 |  |  |  | (18 | ) |  |  | 177 |  |  |  | (557 | ) |  |  | 14,118 |
|  |  |  |  | Fair value of derivatives |  |  |  |
2020 US$M |  | Carrying amount of notes and debentures |  |  | Foreign exchange notional at spot rates |  |  | Interest rate risk |  |  | Recognised in cash flow hedging reserve |  |  | Recognised in cost of hedging reserve |  |  | Recognised in the income statement (1) |  |  | Accrued cash flows |  |  | Total |  |  | Hedged value of notes and debentures (2) |
|  | A |  |  | B |  |  | C |  |  | D |  |  | E |  |  | F |  |  | G |  |  | B to G |  |  | A + B + C |
USD |  |  | 9,926 |  |  |  | – |  |  |  | (742 | ) |  |  | – |  |  |  | – |  |  |  | 29 |  |  |  | 74 |  |  |  | (639 | ) |  |  | 9,184 |
GBP |  |  | 3,245 |  |  |  | 764 |  |  |  | (730 | ) |  |  | (16 | ) |  |  | 13 |  |  |  | (18 | ) |  |  | 47 |  |  |  | 60 |  |  |  | 3,279 |
EUR |  |  | 7,294 |  |  |  | 500 |  |  |  | (576 | ) |  |  | (55 | ) |  |  | 21 |  |  |  | 65 |  |  |  | 32 |  |  |  | (13 | ) |  |  | 7,218 |
CAD |  |  | 580 |  |  |  | 199 |  |  |  | (32 | ) |  |  | – |  |  |  | (2 | ) |  |  | (4 | ) |  |  | (2 | ) |  |  | 159 |  |  |  | 747 |
Total |  |  | 21,045 |  |  |  | 1,463 |  |  |  | (2,080 | ) |  |  | (71 | ) |  |  | 32 |  |  |  | 72 |  |  |  | 151 |  |  |  | (433 | ) |  |  | 20,428 |
(1) | Predominantly related to ineffectiveness.
(2) | Includes US$3,018 million (2020: US$3,019 million) of fixed rate debt not swapped to floating rate that is not in a hedging relationship.
Summary of Hedging instruments | As at 30 June 2021, the Group has not transitioned any of its existing interest rate swaps to alternative risk-free rates.
Hedging instrument |  | Notional currency |  | Notional value US$M |  |  | Notional value to mature before LIBOR expires FY2023 US$M |
Interest rate swaps |  | USD |  |  | 11,950 |  |  |  | 1,979 |
Cross-currency interest rate swaps |  | EUR |  |  | 3,187 |  |  |  | 404 |
|  | GBP |  |  | 1,673 |  |  |  | 923 |
|  | Total |  |  | 16,810 |  |  |  | 3,306 |
Summary of Reconciliation of Components of Equity and Analysis of Movements in Reserves for all Hedges | The following table shows a reconciliation of the components of equity and an analysis of the movements in reserves for all hedges. For a description of these reserves, refer to note 17 ‘Other equity’.
2021 US$M |  | Cash flow hedging reserve |  |  | Cost of hedging reserve |  |  | Total |
|  | Gross |  |  | Tax |  |  | Net |  |  | Gross |  |  | Tax |  |  | Net |  |  |  |
At the beginning of the financial yea r |  |  | 71 |  |  |  | (21 | ) |  |  | 50 |  |  |  | (32 | ) |  |  | 9 |  |  |  | (23 | ) |  |  | 27 |
Add: Change in fair value of hedging instrument recognised in OCI |  |  | 863 |  |  |  | (259 | ) |  |  | 604 |  |  |  | – |  |  |  | – |  |  |  | – |  |  |  | 604 |
Less: Reclassified from reserves to financial expenses – recognised through OCI |  |  | (792 | ) |  |  | 238 |  |  |  | (554 | ) |  |  | (45 | ) |  |  | 14 |  |  |  | (31 | ) |  |  | (585 | )
At the end of the financial year |  |  | 142 |  |  |  | (42 | ) |  |  | 100 |  |  |  | (77 | ) |  |  | 23 |  |  |  | (54 | ) |  |  | 46 |
2020 US$M |  | Cash flow hedging reserve |  |  | Cost of hedging reserve |  |  | Total |
|  | Gross |  |  | Tax |  |  | Net |  |  | Gross |  |  | Tax |  |  | Net |  |  |  |
At the beginning of the financial year |  |  | 163 |  |  |  | (49 | ) |  |  | 114 |  |  |  | (106 | ) |  |  | 32 |  |  |  | (74 | ) |  |  | 40 |
Add: Change in fair value of hedging instrument recognised in OCI |  |  | (315 | ) |  |  | 94 |  |  |  | (221 | ) |  |  | – |  |  |  | – |  |  |  | – |  |  |  | (221 | )
Less: Reclassified from reserves to financial expenses – recognised through OCI |  |  | 223 |  |  |  | (66 | ) |  |  | 157 |  |  |  | 74 |  |  |  | (23 | ) |  |  | 51 |  |  |  | 208 |
At the end of the financial year |  |  | 71 |  |  |  | (21 | ) |  |  | 50 |  |  |  | (32 | ) |  |  | 9 |  |  |  | (23 | ) |  |  | 27 |
Summary of Movement of Interest Bearing Liabilities and Related Derivatives | The movement in the year in the Group’s interest bearing liabilities and related derivatives are as follows:
|  | Interest bearing liabilities |  |  | Derivatives (assets)/ liabilities |  |  |  |
2021 US$M |  | Bank loans |  |  | Notes and debentures |  |  | Lease liabilities |  |  | Bank overdraft and short- term borrowings |  |  | Other |  |  | Cross currency and interest rate swaps |  |  | Total |
At the beginning of the financial year |  |  | 2,492 |  |  |  | 21,045 |  |  |  | 3,443 |  |  |  | – |  |  |  | 68 |  |  |  | (433 | ) |  |  |  |
Proceeds from interest bearing liabilities |  |  | 504 |  |  |  | – |  |  |  | – |  |  |  | – |  |  |  | 64 |  |  |  | – |  |  |  | 568 |
Settlements of debt related instruments |  |  | – |  |  |  | – |  |  |  | – |  |  |  | – |  |  |  | – |  |  |  | 167 |  |  |  | 167 |
Repayment of interest bearing liabilities |  |  | (737 | ) |  |  | (6,888 | ) |  |  | (770 | ) |  |  | – |  |  |  | – |  |  |  | – |  |  |  | (8,395 | )
Change from Net financing cash flows |  |  | (233 | ) |  |  | (6,888 | ) |  |  | (770 | ) |  |  | – |  |  |  | 64 |  |  |  | 167 |  |  |  | (7,660 | )
Other movements: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss on bond repurchase |  |  | – |  |  |  | 579 |  |  |  | – |  |  |  | – |  |  |  | – |  |  |  | (184 | ) |  |  |  |
Interest rate impacts |  |  | – |  |  |  | (764 | ) |  |  | – |  |  |  | – |  |  |  | – |  |  |  | 704 |  |  |  |  |
Foreign exchange impacts |  |  | (1 | ) |  |  | 798 |  |  |  | 115 |  |  |  | – |  |  |  | (14 | ) |  |  | (796 | ) |  |  |  |
Lease additions |  |  | – |  |  |  | – |  |  |  | 1,223 |  |  |  | – |  |  |  | – |  |  |  | – |  |  |  |  |
Remeasurement of index-linked freight contracts |  |  | – |  |  |  | – |  |  |  | (59 | ) |  |  | – |  |  |  | – |  |  |  | – |  |  |  |  |
Other interest bearing liabilities/derivative related changes |  |  | 2 |  |  |  | (1 | ) |  |  | (56 | ) |  |  | – |  |  |  | (60 | ) |  |  | (15 | ) |  |  |  |
At the end of the financial year |  |  | 2,260 |  |  |  | 14,769 |  |  |  | 3,896 |  |  |  | – |  |  |  | 58 |  |  |  | (557 | ) |  |  |  |
|  | Interest bearing liabilities |  |  | Derivatives (assets)/ liabilities |  |  |  |
2020 US$M |  | Bank loans |  |  | Notes and debentures |  |  | Lease liabilities |  |  | Bank overdraft and short- term borrowings |  |  | Other |  |  | Cross currency and interest rate swaps |  |  | Total |
At the beginning of the financial year |  |  | 2,498 |  |  |  | 21,529 |  |  |  | 715 |  |  |  | 20 |  |  |  | 66 |  |  |  | 204 |  |  |  |  |
Proceeds from interest bearing liabilitie s |  |  | 514 |  |  |  | – |  |  |  | – |  |  |  | – |  |  |  | – |  |  |  | – |  |  |  | 514 |
Settlements of debt related instruments |  |  | – |  |  |  | – |  |  |  | – |  |  |  | – |  |  |  | – |  |  |  | (157 | ) |  |  | (157 | )
Repayment of interest bearing liabilities |  |  | (522 | ) |  |  | (859 | ) |  |  | (671 | ) |  |  | – |  |  |  | 5 |  |  |  | – |  |  |  | (2,047 | )
Change from Net financing cash flows |  |  | (8 | ) |  |  | (859 | ) |  |  | (671 | ) |  |  | – |  |  |  | 5 |  |  |  | (157 | ) |  |  | (1,690 | )
Other movements: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate impacts |  |  | – |  |  |  | 720 |  |  |  | – |  |  |  | – |  |  |  | – |  |  |  | (788 | ) |  |  |  |
Foreign exchange impacts |  |  | – |  |  |  | (354 | ) |  |  | (43 | ) |  |  | – |  |  |  | (4 | ) |  |  | 316 |  |  |  |  |
Leases recognised on IFRS 16 transition |  |  | – |  |  |  | – |  |  |  | 2,301 |  |  |  | – |  |  |  | – |  |  |  | – |  |  |  |  |
Lease additions |  |  | – |  |  |  | – |  |  |  | 436 |  |  |  | – |  |  |  | – |  |  |  | – |  |  |  |  |
Remeasurement of index-linked freight contracts |  |  | – |  |  |  | – |  |  |  | 733 |  |  |  | – |  |  |  | – |  |  |  | – |  |  |  |  |
Other interest bearing liabilities/derivative related changes |  |  | 2 |  |  |  | 9 |  |  |  | (28 | ) |  |  | (20 | ) |  |  | 1 |  |  |  | (8 | ) |  |  |  |
At the end of the financial year |  |  | 2,492 |  |  |  | 21,045 |  |  |  | 3,443 |  |  |  | – |  |  |  | 68 |  |  |  | (433 | ) |  |  |  |

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