Amount of increase in additional paid in capital (APIC) resulting from cashless exercise of warrants.

No definition available.

Name:	aeon_AdjustmentsToAdditionalPaidInCapitalCashlessExerciseOfWarrants
Namespace Prefix:	aeon_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of change in fair value of forward purchase agreement and derivatives.

+ References

No definition available.

+ Details

Name:	aeon_ChangeInFairValueOfForwardPurchaseAgreementAndDerivative
Namespace Prefix:	aeon_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number of warrants exercised.

+ References

No definition available.

+ Details

Name:	aeon_ClassOfWarrantOrRightExercised
Namespace Prefix:	aeon_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of warrants issued.

+ References

No definition available.

+ Details

Name:	aeon_ClassOfWarrantOrRightNumberOfWarrantsIssued
Namespace Prefix:	aeon_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of forward purchase agreement and derivative liability as at the end of the reporting period.

+ References

No definition available.

+ Details

Name:	aeon_ForwardPurchaseAgreementAndDerivativeLiability
Namespace Prefix:	aeon_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of shares issued for warrants exercised during the current period.

+ References

No definition available.

+ Details

Name:	aeon_StockIssuedDuringPeriodSharesWarrantsExercised
Namespace Prefix:	aeon_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-3

+ Details

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_ClassOfWarrantOrRightLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of expense (income) related to adjustment to fair value of warrant liability.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 25
-Paragraph 13
-SubTopic 10
-Topic 480
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481766/480-10-25-13

+ Details

Name:	us-gaap_FairValueAdjustmentOfWarrants
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

+ References

No definition available.

+ Details

Name:	us-gaap_WarrantsAndRightsOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	srt_CounterpartyNameAxis=aeon_PriveterraMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=aeon_PublicWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=aeon_PrivatePlacementWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=aeon_LetterAgreementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=aeon_SponsorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Fair Value Measurements - New Money PIPE Subscription Agreements and Letter Agreements, Warrants (Details) - USD ($) $ / shares in Units, $ in Thousands	2 Months Ended	3 Months Ended
	Sep. 30, 2023	Mar. 31, 2024	Mar. 29, 2024	Dec. 31, 2023
Fair Value Measurements
Embedded forward purchase agreements and derivative liabilities		$ 250		$ 41,043
Loss on embedded forward purchase agreements and derivative liabilities, net		$ (22,917)
Issuance of shares related to cashless warrant exercises (in shares)		960,688
Warrants exercised		(6,203,914,000)
Warrants liability at fair value		$ 12,000		1,447
Change in fair value of warrants		20,903
Additional paid in capital		10,300
Priveterra
Fair Value Measurements
Number of warrants issued	14,479,999
Warrants liability at fair value		$ 12,000		$ 1,400
Change in fair value of warrants	$ 20,900
Public warrants
Fair Value Measurements
Exercise price per warrant			$ 11.50
Warrants exercised		(4,912,867,000)
Public warrants \| Priveterra
Fair Value Measurements
Number of warrants issued	9,200,000
Private placement warrants \| Priveterra
Fair Value Measurements
Number of warrants issued	5,279,999
Letter Agreement \| Sponsor
Fair Value Measurements
Embedded forward purchase agreements and derivative liabilities	$ 300
Loss on embedded forward purchase agreements and derivative liabilities, net	$ 400