Business Description, Organization and Basis of Presentation - Schedule of Ownership Structure of Alliance Bernstein (Details) - AllianceBernstein Corporation |
6 Months Ended |
|---|---|
Jun. 30, 2026 | |
| EQH and its subsidiaries | |
| Distribution Made to Limited Partner [Line Items] | |
| Limited partners or members ownership interest in company (percent) | 68.00% |
| AB Holding | |
| Distribution Made to Limited Partner [Line Items] | |
| Limited partners or members ownership interest in company (percent) | 31.30% |
| Unaffiliated holders | |
| Distribution Made to Limited Partner [Line Items] | |
| Limited partners or members ownership interest in company (percent) | 0.70% |
| AB | |
| Distribution Made to Limited Partner [Line Items] | |
| Limited partners or members ownership interest in company (percent) | 100.00% |