ACCOUNTS AND OTHER RECEIVABLE, NET - Current and Non-current Balances (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Subclassifications of assets, liabilities and equities [abstract]
Current, net	$ 6,207	$ 6,401
Non-current, net
Accounts receivable	134	126
Retainer on customer contract	84	70
Billing rights	763	681
Total non-current, net	981	877
Total	$ 7,188	$ 7,278

Non-current Billing Rights

No definition available.

Name:	bbu_NoncurrentBillingRights
Namespace Prefix:	bbu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of non-current trade receivables and non-current other receivables. [Refer: Non-current trade receivables; Other non-current receivables]

+ References

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Data Type:	xbrli:monetaryItemType
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- References

No definition available.

+ Details

Name:	ifrs-full_NoncurrentReceivablesAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of non-current receivables from contracts with customers. [Refer: Receivables from contracts with customers]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of non-current trade receivables. [Refer: Trade receivables]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of current trade receivables and current other receivables. [Refer: Current trade receivables; Other current receivables]

+ References

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of trade receivables and other receivables. [Refer: Trade receivables; Other receivables]

+ References

+ Details

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Namespace Prefix:	ifrs-full_
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Balance Type:	debit
Period Type:	instant