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v3.19.2

Trade and Other Receivables - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jun. 30, 2019 | Jun. 30, 2018
Disclosure of financial assets [line items] |  |
Term receivables terms | 30 days |
Trade receivables | $ 2,403 | $ 1,857
Trade receivables [member] |  |
Disclosure of financial assets [line items] |  |
Provisions for doubtful debts | 3 | 1
Past due but not impaired [member] |  |
Disclosure of financial assets [line items] |  |
Trade receivables | $ 14 | $ 32
Credit risk [member] |  |
Disclosure of financial assets [line items] |  |
Percentage of trade receivables owed from the customers | 34.00% | 33.00%

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- Definition Percentage of trade receivable. + References No definition available. + Details
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Namespace Prefix: | bhp_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Trade receivables standard payment terms. + References No definition available. + Details
Name: | bhp_TradeReceivablesStandardPaymentTerms
Namespace Prefix: | bhp_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of an allowance account used to record impairments to financial assets due to credit losses. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2021-01-01 -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 16 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-02&anchor=para_16&doctype=Standard&book=b -URIDate 2018-03-16 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount due from customers for goods and services sold. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 78 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_78_b&doctype=Standard -URIDate 2018-03-16 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_TypesOfRisksAxis=ifrs-full_CreditRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |