v3.26.1
Investments (Recurring Related Party Investments Transactions) (Details)
$ in Millions, ¥ in Billions
3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
JPY (¥)
Dec. 31, 2025
USD ($)
Related Party Transaction [Line Items]            
Other invested assets - VIE $ 16,816   $ 16,816     $ 15,086
Related Party Loan 1 - Matured in July 2026 | Metlife Inc            
Related Party Transaction [Line Items]            
Debt Instrument, Interest Rate, Stated Percentage 1.61%   1.61%   1.61%  
Debt Instrument, Face Amount $ 147   $ 147   ¥ 23.8  
Related Party Loan 1 - Issued in July 2026, Maturing July 2033 | Metlife Inc            
Related Party Transaction [Line Items]            
Debt Instrument, Interest Rate, Stated Percentage 4.30%   4.30%   4.30%  
Related Party Loan 2 - Matured in July 2026 | Metlife Inc            
Related Party Transaction [Line Items]            
Debt Instrument, Interest Rate, Stated Percentage 1.64%   1.64%   1.64%  
Related Party Loan 2 - Issued in July 2026, Maturing July 2033 | Metlife Inc            
Related Party Transaction [Line Items]            
Debt Instrument, Interest Rate, Stated Percentage 4.29%   4.29%   4.29%  
Minimum            
Related Party Transaction [Line Items]            
Debt Instrument, Interest Rate, Stated Percentage 1.61%   1.61%   1.61%  
Maximum            
Related Party Transaction [Line Items]            
Debt Instrument, Interest Rate, Stated Percentage 2.16%   2.16%   2.16%  
Metlife Inc            
Related Party Transaction [Line Items]            
Other invested assets - VIE $ 980   $ 980     1,016
Related Party Transaction, Other Revenues from Transactions with Related Party 6 $ 5 13 $ 10    
Metropolitan General Insurance Company            
Related Party Transaction [Line Items]            
Other invested assets - VIE 152   $ 152     152
InterestRateStatedPercentageDebtInstrumentExchanged     0.0647      
Affiliated Entity            
Related Party Transaction [Line Items]            
Assets Transferred To Affiliates, Estimated Fair Value 212 20 $ 498 21    
Transfers of Financial Assets Accounted for as Sale, Amortized Cost of Assets Obtained as Proceeds 214 19 525 20    
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale, Gain (Loss) on Sale (2) 1 (27) 1    
Assets Transferred From Affiliates Estimated Fair Value 27 $ 20 364 $ 70    
Other invested assets - VIE 3,496   3,496     3,644
Metropolitan Tower Life Insurance Company            
Related Party Transaction [Line Items]            
Other invested assets - VIE $ 2,364   $ 2,364     $ 2,476