XML 71 R101.htm IDEA: XBRL DOCUMENT
v3.20.2

Earnings Per Share - Additional Information (Detail) - USD ($) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018
Earnings per share [abstract] |  |  |  |
Effect of dilutive shares |  | 12,000,000 | 13,000,000 | 14,000,000
Antidilutive shares |  | 0 | 0 | 0
Number | shares | 266,000,000 |  |  |
Off-market buy-back program | $ 5,200 |  | $ 5,220 |

X
- Definition Antidilutive securities with dilutive effect not included in calculation of diluted earnings per share. + References No definition available. + Details
Name: | bhp_AntidilutiveSecuritiesWithDilutiveEffectNotIncludedInCalculationOfDilutedEarningsPerShare
Namespace Prefix: | bhp_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share buy back. + References No definition available. + Details
Name: | bhp_ShareBuyBack
Namespace Prefix: | bhp_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of dilutive potential ordinary shares that relate to the assumed exercise of the entity's share options. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 33 -IssueDate 2019-01-01 -Paragraph 70 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2019-en-r&anchor=para_70_b&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_DilutiveEffectOfShareOptionsOnNumberOfOrdinaryShares
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | ifrs-full_EarningsPerShareAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash outflow to acquire or redeem entity's shares. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2019-01-01 -Paragraph 17 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_17_b&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_PaymentsToAcquireOrRedeemEntitysShares
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration