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Financial instruments and risk management - Schedule of financial assets and liabilities (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Jun. 30, 2023
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Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | $ 5,775 | $ 6,502
Current assets | 4,972 | 5,677
Non-current assets | 803 | 825
Financial liabilities | (29,447) | (29,326)
Current liabilities | (9,587) | (9,273)
Non-current liabilities | (19,860) | (20,053)
Total net financial assets/(liabilities) | (23,672) | (22,824)
Total net financial assets/(liabilities) current | (4,615) | (3,596)
Total net financial assets/(liabilities) non-current | (19,057) | (19,228)
Borrowings | 21,501 | 20,791
Quoted | Fair value |  |
Disclosure of detailed information about financial instruments [line items] |  |
Borrowings | 20,663 | 19,707
Borrowings |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (21,501) | (20,791)
Current liabilities | (2,885) | (2,142)
Non-current liabilities | (18,616) | (18,649)
Trade and other payables |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (6,658) | (7,141)
Current liabilities | (6,354) | (6,678)
Non-current liabilities | (304) | (463)
Other instruments |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (208) | (309)
Current liabilities | (208) | (309)
Non-current liabilities | 0 | 0
Lease liabilities |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (604) | (564)
Current liabilities | (95) | (94)
Non-current liabilities | (509) | (470)
Total other financial liabilities |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (1,288) | (1,394)
Current liabilities | (348) | (453)
Non-current liabilities | (940) | (941)
Other investments and loans |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | 392 | 289
Non-current assets | 392 | 289
Trade and other receivables |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | 3,525 | 3,466
Current assets | 3,487 | 3,427
Non-current assets | 38 | 39
Cash and cash equivalents |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | 1,130 | 1,813
Current assets | 1,130 | 1,813
Other instruments |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | 275 | 249
Current assets | 275 | 249
Non-current assets | 0 | 0
Leases |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets |  | 2
Non-current assets |  | 2
Total other financial assets |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | 728 | 934
Current assets | 355 | 437
Non-current assets | 373 | 497
Fair value hedges(1) | Interest rate risk | Derivative liabilities |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (376) | (476)
Current liabilities | (16) | (8)
Non-current liabilities | (360) | (468)
Cash flow hedges(1) | Foreign currency debt risk | Derivative liabilities |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (32) |
Current liabilities | 0 |
Non-current liabilities | (32) |
Cash flow hedges(1) | Foreign currency debt risk | Derivatives assets |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets |  | 438
Current assets |  | 0
Non-current assets |  | 438
Cash flow hedges(1) | Foreign currency exchange risk | Derivative liabilities |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (35) | (11)
Current liabilities | (14) | (9)
Non-current liabilities | (21) | (2)
Cash flow hedges(1) | Foreign currency exchange risk | Derivatives assets |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | 62 | 243
Current assets | 58 | 186
Non-current assets | 4 | 57
Cash flow hedges(1) | Commodity price risk | Derivative liabilities |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (14) | (34)
Current liabilities | (14) | (33)
Non-current liabilities | 0 | (1)
Cash flow hedges(1) | Commodity price risk | Derivatives assets |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | 5 | 2
Current assets | 5 | 2
Non-current assets | 0 | 0
Net investment hedges(1) | Foreign exchange risk | Derivative liabilities |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (19) |
Current liabilities | (1) |
Non-current liabilities | (18) |
Net investment hedges(1) | Currency exchange risk | Derivatives assets |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | 386 |
Current assets | 17 |
Non-current assets | 369 |
Fair value through income statement |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (929) | (1,221)
Fair value through income statement | Trade and other payables |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (245) | (391)
Fair value through income statement | Other instruments |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (208) | (309)
Fair value through income statement | Total other financial liabilities |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (684) | (830)
Fair value through income statement | Fair value hedges(1) | Interest rate risk | Derivative liabilities |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (376) | (476)
Fair value through income statement | Cash flow hedges(1) | Foreign currency debt risk | Derivative liabilities |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (32) |
Fair value through income statement | Cash flow hedges(1) | Foreign currency exchange risk | Derivative liabilities |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (35) | (11)
Fair value through income statement | Cash flow hedges(1) | Commodity price risk | Derivative liabilities |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (14) | (34)
Fair value through income statement | Net investment hedges(1) | Foreign exchange risk | Derivative liabilities |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (19) |
Liabilities at amortised cost |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (27,478) | (26,989)
Liabilities at amortised cost | Borrowings |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (21,501) | (20,791)
Liabilities at amortised cost | Trade and other payables |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (5,373) | (5,634)
Liabilities at amortised cost | Other instruments |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | 0 | 0
Liabilities at amortised cost | Lease liabilities |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (604) | (564)
Liabilities at amortised cost | Total other financial liabilities |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (604) | (564)
Not categorised as a financial instrument |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (1,040) | (1,116)
Not categorised as a financial instrument | Trade and other payables |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial liabilities | (1,040) | (1,116)
Fair value through income statement |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | 1,061 | 1,181
Fair value through income statement | Other investments and loans |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | 333 | 249
Fair value through income statement | Other instruments |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | 275 | 249
Fair value through income statement | Total other financial assets |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | 728 | 932
Fair value through income statement | Cash flow hedges(1) | Foreign currency debt risk | Derivatives assets |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets |  | 438
Fair value through income statement | Cash flow hedges(1) | Foreign currency exchange risk | Derivatives assets |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | 62 | 243
Fair value through income statement | Cash flow hedges(1) | Commodity price risk | Derivatives assets |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | 5 | 2
Fair value through income statement | Net investment hedges(1) | Currency exchange risk | Derivatives assets |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | 386 |
Assets at amortised cost |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | 4,160 | 4,668
Assets at amortised cost | Other investments and loans |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | 59 | 38
Assets at amortised cost | Trade and other receivables |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | 2,971 | 2,815
Assets at amortised cost | Cash and cash equivalents |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | 1,130 | 1,813
Assets at amortised cost | Leases |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets |  | 2
Assets at amortised cost | Total other financial assets |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | 0 | 2
Not categorised as a financial instrument |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | 554 | 653
Not categorised as a financial instrument | Other investments and loans |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | 0 | 2
Not categorised as a financial instrument | Trade and other receivables |  |
Disclosure of detailed information about financial instruments [line items] |  |
Financial assets | 554 | 651
Fair value through income statement |  |
Disclosure of detailed information about financial instruments [line items] |  |
Total net financial assets/(liabilities) | 132 | (40)
Assets and liabilities at amortised cost |  |
Disclosure of detailed information about financial instruments [line items] |  |
Total net financial assets/(liabilities) | (23,318) | (22,321)
Not categorised as a financial instrument |  |
Disclosure of detailed information about financial instruments [line items] |  |
Total net financial assets/(liabilities) | $ (486) | $ (463)

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