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Dividends - Summary of Franking Credits (Detail) - BHP Group Limited [member] - USD ($)
$ in Millions
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2018
Disclosure of dividends [line items]      
Franking credits $ 10,980 $ 8,681 $ 10,400
Franking credits arising from the payment of current tax 471 1,194 1,330
Total franking credits available $ 11,451 $ 9,875 $ 11,730