Cybersecurity Risk Management and Strategy Disclosure	12 Months Ended
Dec. 31, 2025
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]	Through a combination of security, risk and compliance resources, AB implements information security through a dedicated Information Security Program ("ISP") that is intended to identify, assess and manage material risks from cybersecurity threats and which includes a focus on safeguarding information and assets from cyber threats, engaging in cyber threat monitoring and responding to actual or potential cyber incidents. Our ISP is led by our Chief Information Security Officer ("CISO") who actively partners with our Chief Compliance Officer ("CCO") and Chief Risk Officer "("CRO"). Ultimately, our ISP is part of our full enterprise risk framework, which includes information technology, business continuity and resiliency, in addition to cybersecurity risk. Enterprise risk, including cybersecurity risk, is overseen by the Audit and Risk Committee ("Audit Committee") on behalf of the Board. Our CISO, with assistance from internal and external resources, is responsible for implementing and providing oversight of our ISP. The ISP employs a defense-in-depth strategy: an information assurance concept in which multiple layers of security controls are distributed throughout an operating environment. The defense-in-depth strategy manages risk with diverse defensive strategies, so that if one layer of defense fails, another layer of defense will attempt to compensate. Our ISP features cybersecurity policies, standards and guidelines, committee governance, training, access controls and data controls. We periodically execute table top exercises as a part of our ISP program. Our ISP, together with our risk and compliance resources, proactively manage the risk of threat from cybersecurity incidents through (i) implementing protocols to take cybersecurity considerations into account in adopting and onboarding our technology resources, (ii) monitoring IT controls to better ensure compliance with cybersecurity and other related legal and regulatory requirements, (iii) periodically assessing adherence by critical and material third parties we partner with to ensure that the appropriate risk management standards are met, (iv) essential business functions remaining available during a business disruption, and (v) regularly developing and updating response plans to address potential IT or cyber incidents should they occur. We also maintain an operational security function that has a real time response capability that triages potential incidents and triggers, as appropriate, impact mitigation protocols. Additionally, we utilize third parties to conduct periodic cybersecurity assessments to identify, assess, manage, and as appropriate, mitigate and respond to cybersecurity risks, and our internal audit function includes certain cyber risk audits as part of its overall risk audit. Our cybersecurity processes rely predominantly on internal resources, but also include important third party resources for certain matters, including the aforementioned assessments as well as our continuous cybersecurity threat monitoring and initial incident reporting system. As part of our ISP, we also perform cyber risk assessments on our third party vendors where we deem appropriate based on our risk assessment of such vendors, then periodically thereafter. As of the date of this report, the Company is not aware of any cybersecurity threats that have materially affected or are reasonably likely to materially affect our business, financial condition or results of operations. However, there can be no assurance that the Company will not be materially affected by such risks. See Item 1A Risk Factors - Operations, Technology and Cyber-Related Risks for a discussion of cybersecurity risks.
Cybersecurity Risk Management Processes Integrated [Flag]	true
Cybersecurity Risk Management Processes Integrated [Text Block]	Through a combination of security, risk and compliance resources, AB implements information security through a dedicated Information Security Program ("ISP") that is intended to identify, assess and manage material risks from cybersecurity threats and which includes a focus on safeguarding information and assets from cyber threats, engaging in cyber threat monitoring and responding to actual or potential cyber incidents. Our ISP is led by our Chief Information Security Officer ("CISO") who actively partners with our Chief Compliance Officer ("CCO") and Chief Risk Officer "("CRO"). Ultimately, our ISP is part of our full enterprise risk framework, which includes information technology, business continuity and resiliency, in addition to cybersecurity risk. Enterprise risk, including cybersecurity risk, is overseen by the Audit and Risk Committee ("Audit Committee") on behalf of the Board. Our CISO, with assistance from internal and external resources, is responsible for implementing and providing oversight of our ISP. The ISP employs a defense-in-depth strategy: an information assurance concept in which multiple layers of security controls are distributed throughout an operating environment. The defense-in-depth strategy manages risk with diverse defensive strategies, so that if one layer of defense fails, another layer of defense will attempt to compensate. Our ISP features cybersecurity policies, standards and guidelines, committee governance, training, access controls and data controls. We periodically execute table top exercises as a part of our ISP program.
Cybersecurity Risk Management Third Party Engaged [Flag]	true
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]	true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]	false
Cybersecurity Risk Board of Directors Oversight [Text Block]	The Audit Committee is responsible for assisting the Board with oversight of our enterprise risk framework, including cybersecurity, information security, information technology and business continuity and resiliency. Our CISO and other members of senior management including our General Counsel, CCO and CRO report quarterly to the Audit Committee at its regular meetings on the status of the Company's cybersecurity risk, risk management policies and risk assessment initiatives. The full Board is updated on an as needed basis. In addition, management updates the Audit Committee, as appropriate, regarding any material cybersecurity threats or incidents, as well as any incidents with lesser impact potential. While our Board provides oversight of our cybersecurity risk environment, the ultimate responsibility for our processes for identifying, assessing and managing cybersecurity risks resides with management. Our CISO, with assistance from internal and external resources, is responsible for the implementation and providing oversight to our ISP within the organization and maintaining the appropriate level of expertise to manage and implement cybersecurity policies, programs and strategies. Our CISO has years of applied experience in actively managing cybersecurity and information security programs for large global publicly traded companies with complex and evolving information systems. Management oversight of our ISP is provided by various governance committees including the Operational Risk Oversight Committee, the Information Security Risk Oversight Subcommittee and the Financial Crimes Control Oversight Subcommittee.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]	While our Board provides oversight of our cybersecurity risk environment, the ultimate responsibility for our processes for identifying, assessing and managing cybersecurity risks resides with management. Our CISO, with assistance from internal and external resources, is responsible for the implementation and providing oversight to our ISP within the organization and maintaining the appropriate level of expertise to manage and implement cybersecurity policies, programs and strategies. Our CISO has years of applied experience in actively managing cybersecurity and information security programs for large global publicly traded companies with complex and evolving information systems. Management oversight of our ISP is provided by various governance committees including the Operational Risk Oversight Committee, the Information Security Risk Oversight Subcommittee and the Financial Crimes Control Oversight Subcommittee.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]	While our Board provides oversight of our cybersecurity risk environment, the ultimate responsibility for our processes for identifying, assessing and managing cybersecurity risks resides with management. Our CISO, with assistance from internal and external resources, is responsible for the implementation and providing oversight to our ISP within the organization and maintaining the appropriate level of expertise to manage and implement cybersecurity policies, programs and strategies. Our CISO has years of applied experience in actively managing cybersecurity and information security programs for large global publicly traded companies with complex and evolving information systems. Management oversight of our ISP is provided by various governance committees including the Operational Risk Oversight Committee, the Information Security Risk Oversight Subcommittee and the Financial Crimes Control Oversight Subcommittee.
Cybersecurity Risk Role of Management [Text Block]	While our Board provides oversight of our cybersecurity risk environment, the ultimate responsibility for our processes for identifying, assessing and managing cybersecurity risks resides with management. Our CISO, with assistance from internal and external resources, is responsible for the implementation and providing oversight to our ISP within the organization and maintaining the appropriate level of expertise to manage and implement cybersecurity policies, programs and strategies. Our CISO has years of applied experience in actively managing cybersecurity and information security programs for large global publicly traded companies with complex and evolving information systems. Management oversight of our ISP is provided by various governance committees including the Operational Risk Oversight Committee, the Information Security Risk Oversight Subcommittee and the Financial Crimes Control Oversight Subcommittee.
Cybersecurity Risk Management Positions or Committees Responsible [Flag]	true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]	Our CISO, with assistance from internal and external resources, is responsible for the implementation and providing oversight to our ISP within the organization and maintaining the appropriate level of expertise to manage and implement cybersecurity policies, programs and strategies.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]	Our CISO has years of applied experience in actively managing cybersecurity and information security programs for large global publicly traded companies with complex and evolving information systems.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]	While our Board provides oversight of our cybersecurity risk environment, the ultimate responsibility for our processes for identifying, assessing and managing cybersecurity risks resides with management. Our CISO, with assistance from internal and external resources, is responsible for the implementation and providing oversight to our ISP within the organization and maintaining the appropriate level of expertise to manage and implement cybersecurity policies, programs and strategies. Our CISO has years of applied experience in actively managing cybersecurity and information security programs for large global publicly traded companies with complex and evolving information systems. Management oversight of our ISP is provided by various governance committees including the Operational Risk Oversight Committee, the Information Security Risk Oversight Subcommittee and the Financial Crimes Control Oversight Subcommittee.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]	true

Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]

Through a combination of security, risk and compliance resources, AB implements information security through a dedicated Information Security Program ("ISP") that is intended to identify, assess and manage material risks from cybersecurity threats and which includes a focus on safeguarding information and assets from cyber threats, engaging in cyber threat monitoring and responding to actual or potential cyber incidents. Our ISP is led by our Chief Information Security Officer ("CISO") who actively partners with our Chief Compliance Officer ("CCO") and Chief Risk Officer "("CRO"). Ultimately, our ISP is part of our full enterprise risk framework, which includes information technology, business continuity and resiliency, in addition to cybersecurity risk. Enterprise risk, including cybersecurity risk, is overseen by the Audit and Risk Committee ("Audit Committee") on behalf of the Board.

Our CISO, with assistance from internal and external resources, is responsible for implementing and providing oversight of our ISP. The ISP employs a defense-in-depth strategy: an information assurance concept in which multiple layers of security controls are distributed throughout an operating environment. The defense-in-depth strategy manages risk with diverse defensive strategies, so that if one layer of defense fails, another layer of defense will attempt to compensate. Our ISP features cybersecurity policies, standards and guidelines, committee governance, training, access controls and data controls. We periodically execute table top exercises as a part of our ISP program.

Our ISP, together with our risk and compliance resources, proactively manage the risk of threat from cybersecurity incidents through (i) implementing protocols to take cybersecurity considerations into account in adopting and onboarding our technology resources, (ii) monitoring IT controls to better ensure compliance with cybersecurity and other related legal and regulatory requirements, (iii) periodically assessing adherence by critical and material third parties we partner with to ensure that the appropriate risk management standards are met, (iv) essential business functions remaining available during a business disruption, and (v) regularly developing and updating response plans to address potential IT or cyber incidents should they occur. We also maintain an operational security function that has a real time response capability that triages potential incidents and triggers, as appropriate, impact mitigation protocols. Additionally, we utilize third parties to conduct periodic cybersecurity assessments to identify, assess, manage, and as appropriate, mitigate and respond to cybersecurity risks, and our internal audit function includes certain cyber risk audits as part of its overall risk audit. Our cybersecurity processes rely predominantly on internal resources, but also include important third party resources for certain matters, including the aforementioned assessments as well as our continuous cybersecurity threat monitoring and initial incident reporting system.

As part of our ISP, we also perform cyber risk assessments on our third party vendors where we deem appropriate based on our risk assessment of such vendors, then periodically thereafter.

As of the date of this report, the Company is not aware of any cybersecurity threats that have materially affected or are reasonably likely to materially affect our business, financial condition or results of operations. However, there can be no assurance that the Company will not be materially affected by such risks. See Item 1A Risk Factors - Operations, Technology and Cyber-Related Risks for a discussion of cybersecurity risks.

Cybersecurity Risk Management Processes Integrated [Text Block]

Through a combination of security, risk and compliance resources, AB implements information security through a dedicated Information Security Program ("ISP") that is intended to identify, assess and manage material risks from cybersecurity threats and which includes a focus on safeguarding information and assets from cyber threats, engaging in cyber threat monitoring and responding to actual or potential cyber incidents. Our ISP is led by our Chief Information Security Officer ("CISO") who actively partners with our Chief Compliance Officer ("CCO") and Chief Risk Officer "("CRO"). Ultimately, our ISP is part of our full enterprise risk framework, which includes information technology, business continuity and resiliency, in addition to cybersecurity risk. Enterprise risk, including cybersecurity risk, is overseen by the Audit and Risk Committee ("Audit Committee") on behalf of the Board.

Our CISO, with assistance from internal and external resources, is responsible for implementing and providing oversight of our ISP. The ISP employs a defense-in-depth strategy: an information assurance concept in which multiple layers of security controls are distributed throughout an operating environment. The defense-in-depth strategy manages risk with diverse defensive strategies, so that if one layer of defense fails, another layer of defense will attempt to compensate. Our ISP features cybersecurity policies, standards and guidelines, committee governance, training, access controls and data controls. We periodically execute table top exercises as a part of our ISP program.

Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]

true

Cybersecurity Risk Board of Directors Oversight [Text Block]

The Audit Committee is responsible for assisting the Board with oversight of our enterprise risk framework, including cybersecurity, information security, information technology and business continuity and resiliency. Our CISO and other members of senior management including our General Counsel, CCO and CRO report quarterly to the Audit Committee at its regular meetings on the status of the Company's cybersecurity risk, risk management policies and risk assessment initiatives. The full Board is updated on an as needed basis. In addition, management updates the Audit Committee, as appropriate, regarding any material cybersecurity threats or incidents, as well as any incidents with lesser impact potential.

While our Board provides oversight of our cybersecurity risk environment, the ultimate responsibility for our processes for identifying, assessing and managing cybersecurity risks resides with management. Our CISO, with assistance from internal and external resources, is responsible for the implementation and providing oversight to our ISP within the organization and maintaining the appropriate level of expertise to manage and implement cybersecurity policies, programs and strategies. Our CISO has years of applied experience in actively managing cybersecurity and information security programs for large global publicly traded companies with complex and evolving information systems. Management oversight of our ISP is provided by various governance committees including the Operational Risk Oversight Committee, the Information Security Risk Oversight Subcommittee and the Financial Crimes Control Oversight Subcommittee.

Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]

While our Board provides oversight of our cybersecurity risk environment, the ultimate responsibility for our processes for identifying, assessing and managing cybersecurity risks resides with management. Our CISO, with assistance from internal and external resources, is responsible for the implementation and providing oversight to our ISP within the organization and maintaining the appropriate level of expertise to manage and implement cybersecurity policies, programs and strategies. Our CISO has years of applied experience in actively managing cybersecurity and information security programs for large global publicly traded companies with complex and evolving information systems. Management oversight of our ISP is provided by various governance committees including the Operational Risk Oversight Committee, the Information Security Risk Oversight Subcommittee and the Financial Crimes Control Oversight Subcommittee.

Cybersecurity Risk Management Positions or Committees Responsible [Flag]

true

Cybersecurity Risk Management Expertise of Management Responsible [Text Block]

Our CISO has years of applied experience in actively managing cybersecurity and information security programs for large global publicly traded companies with complex and evolving information systems.

Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]

true