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GOODWILL AND INTANGIBLE ASSETS - Intangible Assets (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2022 | Dec. 31, 2021
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | $ 261 | $ 97
Accumulated Amortization | 62 | 33
Net | $ 199 | 64
Core deposits |  |
Finite-Lived Intangible Assets [Line Items] |  |
Amortizable Lives | 10 years |
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | $ 144 | 0
Accumulated Amortization | 14 | 0
Net | 130 | 0
Core deposits | Investors Acquisition |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | 97 |
Core deposits | 80 Branches and Deposit Business, HSBC Bank |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | 47 |
Acquired technology |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | 21 | 21
Accumulated Amortization | 17 | 11
Net | 4 | 10
Acquired relationships |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | 53 | 53
Accumulated Amortization | 19 | 14
Net | 34 | 39
Naming rights |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | 31 | 10
Accumulated Amortization | 6 | 3
Net | 25 | 7
Naming rights | Investors Acquisition |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | 22 |
Other |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | 12 | 13
Accumulated Amortization | 6 | 5
Net | $ 6 | $ 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 |

X
- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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