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Deferred Tax Balances - Summary of Movement in Net Deferred Tax Position (Detail) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2016
Net deferred tax asset/(liability)      
At the beginning of the financial year $ 2,023 $ 1,823 $ (1,681)
Income tax (charge)/credit recorded in the income statement (1,445) 188 3,508
Income tax credit/(charge) recorded directly in equity 17 12 (25)
Other movements (26)   21
At the end of the financial year $ 569 $ 2,023 $ 1,823