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Deferred Tax Balances - Summary of Composition of Unrecognised Deferred Tax Assets and Liabilities (Parenthetical) (Detail) - USD ($) $ in Millions | Jun. 30, 2020 | Jun. 30, 2019
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Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Income and capital tax losses with a tax benefit, which are not recognised as deferred tax assets | $ 2,405 | $ 2,265
Tax credits, which are not recognised as deferred tax assets | 1,683 | $ 1,455
Gross amount of income tax losses not recognised | 8,559 |
Gross amount of tax losses not recognised | 12,709 |
Due not later than one year [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Gross amount of income tax losses not recognised | 474 |
Later than one year and not later than two years [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Gross amount of income tax losses not recognised | 240 |
Later than two years and not later than five years [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Gross amount of income tax losses not recognised | 2,525 |
Later than five years and not later than 10 years [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Gross amount of income tax losses not recognised | 679 |
Later than 10 years and not later than 20 years [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Tax credits, which are not recognised as deferred tax assets | 46 |
Gross amount of income tax losses not recognised | 2,379 |
Unlimited [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Gross amount of income tax losses not recognised | 2,262 |
Gross amount of capital tax losses | 4,150 |
Not Later than 10 year[member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Tax credits, which are not recognised as deferred tax assets | $ 1,637 |

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- Definition The amount of unused tax credits for which no deferred tax asset is recognised in the statement of financial position. [Refer: Unused tax credits [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2019-01-01 -Paragraph 81 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2019-en-r&anchor=para_81_e&doctype=Standard -URIDate 2019-03-27 + Details
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