Other Assets and Receivables - Summary of Movements in the Expected Credit Losses (Detail) - EUR (€) € in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Disclosure Of Other Assets And Receivables [abstract]
Beginning balance	€ (129)	€ (113)
Expected credit losses	(29)	(18)
Reversal of expected credit losses	0	2
Transfers to disposal groups	0	4
Other movements	148	(5)
Ending balance	€ (10)	€ (129)

Disclosure Of Other Assets And Receivables [abstract].

No definition available.

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- Definition

Increase decrease through transfers to disposal groups allowance account for credit losses of financial assets.

+ References

No definition available.

+ Details

Name:	aeg_IncreaseDecreaseThroughTransfersToDisposalGroupsAllowanceAccountForCreditLossesOfFinancialAssets
Namespace Prefix:	aeg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of additional allowance for credit losses of financial assets recognised in profit or loss. [Refer: Allowance account for credit losses of financial assets]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expired 2023-01-01
-Name IFRS
-Number 7
-IssueDate 2023-01-01
-Paragraph 16
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_16&doctype=Standard&book=b
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_AdditionalAllowanceRecognisedInProfitOrLossAllowanceAccountForCreditLossesOfFinancialAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- 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 Expired 2023-01-01
-Name IFRS
-Number 7
-IssueDate 2023-01-01
-Paragraph 16
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_16&doctype=Standard&book=b
-URIDate 2023-03-23

+ Details

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

- Definition

The increase (decrease) in allowance account for credit losses of financial assets resulting from changes that the entity does not separately disclose in the same statement or note. [Refer: Allowance account for credit losses of financial assets]

+ References

+ Details

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Balance Type:	credit
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- Definition

The decrease in an allowance account for credit losses of financial assets resulting from the reversal of impairment. [Refer: Allowance account for credit losses of financial assets]

+ References

+ Details

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