Name:	ablp_LimitedLiabilityCompanyLlcOrLimitedPartnershipLpMembersOrLimitedPartnersEconomicInterestInCompany
Namespace Prefix:	ablp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

AXA's ownership percentage of the issued and outstanding units representing assignments of beneficial ownership of limited partnership interests in Holdings.

No definition available.

Name:	ablp_LimitedLiabilityCompanyLlcOrLimitedPartnershipLpMembersOrLimitedPartnersOwnershipInterestInHoldingCompany
Namespace Prefix:	ablp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Private client services include institutions with accounts under this threshold.

No definition available.

Name:	ablp_ThresholdAmountForIncludingInstitutionsInPrivateClients
Namespace Prefix:	ablp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The number of general partner units outstanding.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 5

-Subparagraph (SAB TOPIC 4.F)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 4

-Section F

Name:	us-gaap_GeneralPartnersCapitalAccountUnitsOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 272

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

Name:	us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

The number of units or percentage investment held by one or more members or limited partners of the LLC or LP.

Name:	us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

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

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

Name:	us-gaap_PartnerTypeOfPartnersCapitalAccountAxis=ablp_AxaAndItsSubsidiariesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_PartnerTypeOfPartnersCapitalAccountAxis=ablp_HoldingsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: