Exceptional Items - Summary of Exceptional Items by Category (Detail) - USD ($)
$ in Millions |
12 Months Ended |
Jun. 30, 2021 |
Jun. 30, 2020 |
Jun. 30, 2019 |
| Disclosure of exceptional items [line items] |
|
|
|
| Exceptional items gross |
$ (4,470)
|
$ (1,546)
|
$ (1,060)
|
| Exceptional items tax |
(1,327)
|
241
|
242
|
| Exceptional items net |
(5,797)
|
(1,305)
|
(818)
|
| Samarco dam failure [member] |
|
|
|
| Disclosure of exceptional items [line items] |
|
|
|
| Exceptional items gross |
(1,087)
|
(176)
|
(1,060)
|
| Exceptional items tax |
(71)
|
|
|
| Exceptional items net |
(1,158)
|
(176)
|
(1,060)
|
| Impairment of Energy coal assets [Member] |
|
|
|
| Disclosure of exceptional items [line items] |
|
|
|
| Exceptional items gross |
(1,523)
|
|
|
| Exceptional items tax |
(651)
|
|
|
| Exceptional items net |
(2,174)
|
|
|
| Cancellation Of Power Contracts [Member] |
|
|
|
| Disclosure of exceptional items [line items] |
|
|
|
| Exceptional items gross |
|
(778)
|
|
| Exceptional items tax |
|
271
|
|
| Exceptional items net |
|
(507)
|
|
| Global taxation matters [member] |
|
|
|
| Disclosure of exceptional items [line items] |
|
|
|
| Exceptional items tax |
|
|
242
|
| Exceptional items net |
|
|
242
|
| Non-controlling interests [member] |
|
|
|
| Disclosure of exceptional items [line items] |
|
|
|
| Exceptional items gross |
(34)
|
(291)
|
|
| Exceptional items tax |
10
|
90
|
|
| Exceptional items net |
(24)
|
(201)
|
|
| Attributable to BHP shareholders [member] |
|
|
|
| Disclosure of exceptional items [line items] |
|
|
|
| Exceptional items gross |
(4,436)
|
(1,255)
|
(1,060)
|
| Exceptional items tax |
(1,337)
|
151
|
242
|
| Exceptional items net |
(5,773)
|
(1,104)
|
$ (818)
|
| COVID-19 related costs [Member] |
|
|
|
| Disclosure of exceptional items [line items] |
|
|
|
| Exceptional items gross |
(546)
|
(183)
|
|
| Exceptional items tax |
146
|
53
|
|
| Exceptional items net |
(400)
|
(130)
|
|
| Cerro Colorado impairment [Member] |
|
|
|
| Disclosure of exceptional items [line items] |
|
|
|
| Exceptional items gross |
|
(409)
|
|
| Exceptional items tax |
|
(83)
|
|
| Exceptional items net |
|
$ (492)
|
|
| Impairment of Potash assets [Member] |
|
|
|
| Disclosure of exceptional items [line items] |
|
|
|
| Exceptional items gross |
(1,314)
|
|
|
| Exceptional items tax |
(751)
|
|
|
| Exceptional items net |
$ (2,065)
|
|
|