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GOODWILL AND OTHER INTANGIBLE ASSETS - Narrative (Details) - USD ($) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2024 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Nov. 22, 2022
Goodwill [Line Items] |  |  |  |  |
Impairment loss |  | $ 0 | $ 0 |  |
Alliance Bernstein Intangible Assets |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Gross carrying amount of intangible assets | $ 1,200,000,000 | 1,200,000,000 | 1,200,000,000 |  |
Accumulated amortization of these intangible assets | 970,000,000 | 970,000,000 | 911,000,000 |  |
Amortization of intangible assets |  | 59,000,000 | (58,000,000) | $ (43,000,000) |
Amortization expense, year one | 58,000,000 | 58,000,000 |  |  |
Amortization expense, year two | 58,000,000 | 58,000,000 |  |  |
Amortization expense, year three | 37,000,000 | 37,000,000 |  |  |
Amortization expense, year four | 26,000,000 | 26,000,000 |  |  |
Amortization expense, year five | 24,000,000 | 24,000,000 |  |  |
Impairment charge | 4,000,000 |  |  |  |
Disposal Group, Held-for-Sale, Not Discontinued Operations | BRS Business |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Disposal group, including discontinued operation, goodwill |  |  |  |  | $ 170,000,000
Investment Management |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Goodwill | $ 5,100,000,000 | $ 5,100,000,000 | $ 5,100,000,000 |  |

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