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Income Tax Expense - Summary of Factors Affecting Income Tax Expense (Detail) - USD ($)
$ in Millions
 12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2020
Income tax expense differs to the standard rate of corporation tax as follows:      
Profit before taxation $ 33,137 $ 24,292 $ 12,825
Tax on profit at Australian prima facie tax rate of 30 per cent 9,941 7,288 3,847
Non-tax effected operating losses and capital gains 1,087 2,640 409
Tax on remitted and unremitted foreign earnings 441 485 225
Investment and development allowance     (99)
Tax rate changes   (1) (8)
Recognition of previously unrecognised tax assets (3) (28) (7)
Tax effect of loss from equity accounted investments, related impairments and expenses (19) 315 153
Amounts (over)/under provided in prior years (80) (57) 13
Foreign exchange adjustments (233) (33) 41
Impact of tax rates applicable outside of Australia (801) (669) (272)
Other 97 436 (86)
Income tax expense 10,430 10,376 4,216
Royalty-related taxation (net of income tax benefit) 307 240 (19)
Total taxation expense $ 10,737 $ 10,616 $ 4,197