v3.26.1
Equity (Reclassifications out of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Realized investment gains (losses), net $ (1,566) [1] $ (1,699) [1] $ (1,930) [2] $ (2,429) [2]
Other Income [1] 2,369 1,412 2,399 1,692
Total foreign currency translation adjustment        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Amounts reclassified from AOCI     (12) (20)
Total net unrealized investment gains (losses)        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Amounts reclassified from AOCI     1,030 511
Total amortization of defined benefit items        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Amounts reclassified from AOCI     35 13
Accumulated Other Comprehensive Income (Loss)        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Amounts reclassified from AOCI     1,053 504
Amounts reclassified from AOCI        
Amortization of defined benefit items:        
Prior service cost 17 17 34 34
Actuarial gain (loss) (34) (23) (69) (47)
Amounts reclassified from AOCI | Total foreign currency translation adjustment        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Realized investment gains (losses), net 2 8 12 20
Other Income 0 0 0 0
Amounts reclassified from AOCI 2 8 12 20
Amounts reclassified from AOCI | Total net unrealized investment gains (losses)        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Amounts reclassified from AOCI (427) (413) (1,030) (511)
Amounts reclassified from AOCI | Total amortization of defined benefit items        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Amounts reclassified from AOCI (17) (6) (35) (13)
Amounts reclassified from AOCI | Accumulated Other Comprehensive Income (Loss)        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Amounts reclassified from AOCI (442) (411) (1,053) (504)
Amounts reclassified from AOCI | Net unrealized investment gains (losses) on available-for-sale securities        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Net unrealized investment gains (losses) (476) (137) (1,220) (200)
Amounts reclassified from AOCI | Interest Rate | Cash Flow Hedging        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Net unrealized investment gains (losses) (2) (4) (4) (7)
Amounts reclassified from AOCI | Currency | Cash Flow Hedging        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Net unrealized investment gains (losses) (3) (4) (6) (3)
Amounts reclassified from AOCI | Currency | Fair Value Hedging        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Net unrealized investment gains (losses) (4) (3) (8) (7)
Amounts reclassified from AOCI | Currency/Interest rate | Cash Flow Hedging        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Net unrealized investment gains (losses) $ 58 $ (265) $ 208 $ (294)
[1] See Note 20 for additional information regarding related party transactions.
[2] See Note 20 for additional information regarding related party transactions.