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Financial Risk Management - Summary of Financial Assets and Liabilities (Detail) - USD ($) $ in Millions | Dec. 31, 2019 | Jun. 30, 2019
--- | --- | ---
Disclosure of detailed information about financial instruments [line items] |  |  |
Other financial assets | $ 1,319 | $ 1,390 |
Cash and cash equivalents | 14,321 | 15,613 |
Total financial assets | 19,025 | 20,411 |
Non-financial assets | 83,265 | 80,450 |
Total assets | 102,290 | 100,861 |
Other financial liabilities | 1,094 | 1,023 |
Leases liabilities | 2,578 | 715 | [1]
Total financial liabilities | 33,595 | 32,411 |
Non-financial liabilities | 16,277 | 16,626 |
Total liabilities | 49,872 | 49,037 |
Financial assets held at amortised cost [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Cash and cash equivalents | 14,321 | 15,613 |
Loans to equity accounted investments | 40 | 33 |
Financial liabilities held at amortised cost [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Bank overdrafts and short-term borrowings | 0 | 20 |
Bank loans | 2,694 | 2,498 |
Notes and debentures | 21,534 | 21,529 |
Leases liabilities | 2,578 | 715 |
Other | 2 | 66 |
Current cross currency and interest rate swaps [member] | Financial liabilities held at fair value through profit or loss [member] | Level 2 [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Other financial liabilities | 210 | 63 |
Current other derivative contracts [member] | Financial liabilities held at fair value through profit or loss [member] | Levels 2 and 3 [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Other financial liabilities | 153 | 64 |
Non-current cross currency and interest rate swaps [member] | Financial liabilities held at fair value through profit or loss [member] | Level 2 [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Other financial liabilities | 730 | 895 |
Non-current other derivative contracts [member] | Financial liabilities held at fair value through profit or loss [member] | Levels 2 and 3 [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Other financial liabilities | 1 | 1 |
Trades and other payables [member] | Financial liabilities held at amortised cost [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Trade and other payables | 5,339 | 6,283 |
Provisionally priced trade payables [member] | Financial liabilities held at fair value through profit or loss [member] | Level 2 [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Trade and other payables | 354 | 277 |
Current cross currency and interest rate swaps [member] | Financial assets held at fair value through profit or loss [member] | Level 2 [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Other financial assets | 11 | 15 |
Current other derivative contracts [member] | Financial assets held at fair value through profit or loss [member] | Levels 2 and 3 [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Other financial assets | 33 | 57 |
Current other investments [member] | Financial assets held at fair value through profit or loss [member] | Level 1 and 2 [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Other financial assets | 10 | 15 |
Non-current cross currency and interest rate swaps [member] | Financial assets held at fair value through profit or loss [member] | Level 2 [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Other financial assets | 696 | 739 |
Non-current other derivative contracts [member] | Financial assets held at fair value through profit or loss [member] | Levels 2 and 3 [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Other financial assets | 192 | 180 |
Non-current investment in shares [member] | Financial assets held at fair value through profit or loss [member] | Level 3 [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Other financial assets | 0 | 6 |
Non-current investment in shares [member] | Financial assets held at fair value through other comprehensive income [member] | Level 3 [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Other financial assets | 33 | 34 |
Non-current other investments [member] | Financial assets held at fair value through profit or loss [member] | Level 3 [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Other financial assets | 46 | 47 |
Non-current other investments [member] | Financial assets held at fair value through profit or loss [member] | Levels 1, 2 and 3 [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Other financial assets | 344 | 344 |
Trade and other receivable [member] | Financial assets held at amortised cost [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Trade and other receivables | 2,014 | 1,929 |
Provisionally priced trade receivables [member] | Financial assets held at fair value through profit or loss [member] | Level 2 [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Trade and other receivables | $ 1,331 | $ 1,446 |
[1] | Relates to existing finance leases at 1 July 2019.

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