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Significant Accounting Policies (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands
Dec. 31, 2023
Sep. 30, 2023
Dec. 31, 2022
 [1]
Dec. 31, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Adjustment to retained earnings   $ 5,328,362 $ 4,685,593  
Accumulated other comprehensive income   $ (4,425,695) $ (3,746,230)  
Forecast | Brookfield Reinsurance Ltd.        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Business acquisition, share price (in dollars per share) $ 38.85      
Business combination, weighted average share price, exchange ratio adjustment, duration 10 days      
Business acquisition, termination fee $ 102,000      
Forecast | Brookfield Reinsurance Ltd. | Minimum        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Business acquisition, total consideration, share price (in dollars per share) $ 54.00      
Forecast | Brookfield Reinsurance Ltd. | Maximum        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Business acquisition, total consideration, share price (in dollars per share) $ 56.50      
Cumulative Effect, Period of Adoption, Adjustment        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Adjustment to retained earnings       $ 7,200
Accumulated other comprehensive income       $ 1,800,000
[1] Certain prior period amounts have been recast. See Note 1 - Significant Accounting Policies for more information.