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v3.20.2

Net Debt - Summary of Interest Bearing Liabilities and Cash and Cash Equivalents Denominated by Currency (Detail) - USD ($) $ in Millions | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018
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Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Interest bearing liabilities | $ 27,048 | $ 24,828 |
Cash and cash equivalents | 13,426 | 15,613 | $ 15,871
USD [member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Interest bearing liabilities | 14,625 | 12,485 |
Cash and cash equivalents | 9,555 | 9,214 |
EUR [member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Interest bearing liabilities | 7,323 | 7,680 |
Cash and cash equivalents | 4 | 6 |
GBP [member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Interest bearing liabilities | 3,272 | 3,118 |
Cash and cash equivalents | 519 | 48 |
AUD [member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Interest bearing liabilities | 1,055 | 951 |
Cash and cash equivalents | 1,011 | 3,023 |
CAD [member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Interest bearing liabilities | 597 | 594 |
Cash and cash equivalents | 2,131 | 3,092 |
Other [member] |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Interest bearing liabilities | 176 | 0 |
Cash and cash equivalents | $ 206 | $ 230 |

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- Definition The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2019-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_45&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2019-01-01 -Paragraph B13 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2019-en-r&anchor=para_B13_a&doctype=Appendix&subtype=B -URIDate 2019-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 54 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_54_i&doctype=Standard -URIDate 2019-03-27 + Details
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