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GOODWILL AND INTANGIBLE ASSETS - Other Intangibles (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items] |  |
Gross | $ 271 | $ 97
Accumulated Amortization | 74 | 33
Net | $ 197 | 64
Core deposits |  |
Finite-Lived Intangible Assets [Line Items] |  |
Amortizable Lives | 10 years |
Gross | $ 144 | 0
Accumulated Amortization | 20 | 0
Net | 124 | 0
Core deposits | Investors Acquisition |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross | 97 |
Core deposits | Online Deposit Business And 80 East Coast Branches Of HSBC Bank |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross | 47 |
Acquired technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross | 23 | 21
Accumulated Amortization | 19 | 11
Net | 4 | 10
Acquired relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross | 54 | 53
Accumulated Amortization | 21 | 14
Net | 33 | 39
Naming Rights |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross | 33 | 10
Accumulated Amortization | 7 | 3
Net | 26 | 7
Naming Rights | Investors Acquisition |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross | 24 |
Other |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross | 17 | 13
Accumulated Amortization | 7 | 5
Net | $ 10 | $ 8
Minimum | Acquired technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Amortizable Lives | 5 years |
Minimum | Acquired relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Amortizable Lives | 2 years |
Minimum | Naming Rights |  |
Finite-Lived Intangible Assets [Line Items] |  |
Amortizable Lives | 5 years |
Minimum | Other |  |
Finite-Lived Intangible Assets [Line Items] |  |
Amortizable Lives | 2 years |
Maximum | Acquired technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Amortizable Lives | 7 years |
Maximum | Acquired relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Amortizable Lives | 15 years |
Maximum | Naming Rights |  |
Finite-Lived Intangible Assets [Line Items] |  |
Amortizable Lives | 10 years |
Maximum | Other |  |
Finite-Lived Intangible Assets [Line Items] |  |
Amortizable Lives | 7 years |

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