EQUITY ACCOUNTED INVESTMENTS - Schedule Of Changes In Balance Of Investments (Details) $ in Millions	6 Months Ended
Jun. 30, 2022 USD ($)
Disclosure Of Associates And Joint Ventures [Line Items]
Balance, beginning of period	$ 46,100
Disposals, net of additions1	(89)
Investment Accounted for Using Equity Method, Share of comprehensive income	855
Distributions received	(968)
Return of Capital	(325)
Foreign currency translation and other	(663)
Balance, end of period	45,248
Total
Disclosure Of Associates And Joint Ventures [Line Items]
Equity accounted investments	$ 338

[Line Items] for Disclosure Of Associates And Joint Ventures [Table]

No definition available.

Name:	bam_DisclosureOfAssociatesAndJointVenturesLineItems
Namespace Prefix:	bam_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Investment Accounted For Using Equity Method, Additions, Net Of Disposals

+ References

No definition available.

+ Details

Name:	bam_InvestmentAccountedForUsingEquityMethodAdditionsNetOfDisposals
Namespace Prefix:	bam_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Investment Accounted For Using Equity Method, Foreign Currency Translation

+ References

No definition available.

+ Details

Name:	bam_InvestmentAccountedForUsingEquityMethodForeignCurrencyTranslation
Namespace Prefix:	bam_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Investments Accounted For Using The Equity Method Recognised As Of Acquisition Date

+ References

No definition available.

+ Details

Name:	bam_InvestmentsAccountedForUsingTheEquityMethodRecognisedAsOfAcquisitionDate
Namespace Prefix:	bam_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Return of Capital

+ References

No definition available.

+ Details

Name:	bam_ReturnofCapital
Namespace Prefix:	bam_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of dividends received.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2021-01-01
-Paragraph B12
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2021-en-r&anchor=para_B12_a&doctype=Appendix&subtype=B
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_DividendsReceived
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of investments accounted for using the equity method. The equity method is a method of accounting whereby the investment is initially recognised at cost and adjusted thereafter for the post-acquisition change in the investor's share of net assets of the investee. The investor's profit or loss includes its share of the profit or loss of the investee. The investor's other comprehensive income includes its share of the other comprehensive income of the investee. [Refer: At cost [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 8
-IssueDate 2021-01-01
-Paragraph 24
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2021-en-r&anchor=para_24_a&doctype=Standard
-URIDate 2021-03-24

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2021-01-01
-Paragraph B16
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2021-en-r&anchor=para_B16&doctype=Appendix&subtype=B
-URIDate 2021-03-24

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 54
-Subparagraph e
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_54_e&doctype=Standard
-URIDate 2021-03-24

+ Details

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

- Definition

The entity's share of the total comprehensive income of associates and joint ventures accounted for using the equity method. [Refer: Associates [member]; Joint ventures [member]; Investments accounted for using equity method]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2021-01-01
-Paragraph B16
-Subparagraph d
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2021-en-r&anchor=para_B16_d&doctype=Appendix&subtype=B
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_ShareOfTotalComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	ifrs-full_BusinessCombinationsAxis=ifrs-full_BusinessCombinationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: