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v3.19.2

Net Debt - Summary of Interest Bearing Liabilities and Cash and Cash Equivalents Denominated by Currency (Detail) - USD ($) $ in Millions | Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2017
--- | --- | --- | ---
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Interest bearing liabilities | $ 24,828 | $ 26,805 |
Cash and cash equivalents | 15,613 | 15,871 | $ 14,153
USD [member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Interest bearing liabilities | 12,485 | 12,981 |
Cash and cash equivalents | 9,214 | 7,024 |
EUR [member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Interest bearing liabilities | 7,680 | 9,070 |
Cash and cash equivalents | 6 | 5,845 |
GBP [member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Interest bearing liabilities | 3,118 | 3,104 |
Cash and cash equivalents | 48 | 1,560 |
AUD [member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Interest bearing liabilities | 951 | 1,077 |
Cash and cash equivalents | 3,023 | 9 |
CAD [member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Interest bearing liabilities | 594 | 573 |
Cash and cash equivalents | 3,092 | 1,301 |
Other [member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Cash and cash equivalents | $ 230 | $ 132 |

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