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Income Tax Expense - Summary of Income Tax Recognised in Other Comprehensive Income (Parenthetical) (Detail) - USD ($) $ in Millions | 12 Months Ended
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Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2019
Major components of tax expense (income) [abstract] |  |  |
Income tax relating to components of other comprehensive income, deferred taxes | $ (28) | $ 31 | $ 15
Income tax relating to components of other comprehensive income, current taxes | $ 0 | $ 0 | $ 12

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- Definition Deferred income tax relating to components of other comprehensive income. + References No definition available. + Details
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