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HELD-FOR-SALE - Narrative (Details) $ in Millions |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Nov. 22, 2022 | Mar. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) director | Dec. 31, 2023 USD ($)
NA JV |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Number of independent directors | director |  |  | 2 |
AB Holding |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Non cash valuation adjustment |  | $ 6 |  | $ 7
Payment of cost to sell |  | 7 |  |
AB Holding | JVs |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Liability for investment |  | $ 304 |  |
AB Holding | JVs |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Interest in joint venture | 49.00% |  |  |
Societe Generale | JVs |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Cash payment to equalize value of investment |  |  | $ 304 |
Societe Generale | JVs |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Interest in joint venture | 51.00% |  |  |
Interest in joint venture expected | 100.00% |  | 100.00% | 100.00%
Interest in joint venture maximum limit expected period | 5 years |  | 5 years |
Societe Generale | NA JV |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Interest in joint venture |  |  | 51.00% | 51.00%
Period for option to sell ownership interest in joint venture |  |  | 5 years |

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