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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