v3.26.1
SHAREHOLDERS' EQUITY - Reclassifications Out of Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Net investment gains (losses) $ (153)   $ (421)   $ (104) $ (1,384)
Acquisition and operating expenses (1,270)   (1,328)   (2,559) (2,636)
Income tax (expense) or benefit (170)   (223)   (376) (339)
Net of tax $ 825 $ 1,019 $ 599 $ 29 $ 1,844 $ 628
U.S. federal statutory income tax rate 21.00%   21.00%   21.00% 21.00%
Reclassification Out Of Accumulated Other Comprehensive Income            
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Net of tax $ (192)   $ (13)   $ (200) $ 19
Reclassification Out Of Accumulated Other Comprehensive Income | Unrealized gains (losses) on available-for-sale securities            
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Net investment gains (losses) (244)   (14)   (258) 26
Income tax (expense) or benefit [1] 51   3   54 (5)
Net of tax (193)   (11)   (204) 21
Reclassification Out Of Accumulated Other Comprehensive Income | Unrealized Gains (Losses) on Derivatives            
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Net investment gains (losses) 0   (1)   4 (2)
Income tax (expense) or benefit [1] 0   0   (1) 0
Net of tax 0   (1)   3 (2)
Reclassification Out Of Accumulated Other Comprehensive Income | Pension liability adjustment, actuarial gains (losses)            
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Acquisition and operating expenses [2] 1   (1)   1 0
Reclassification Out Of Accumulated Other Comprehensive Income | Pension liability adjustment, prior service (cost) credit            
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Acquisition and operating expenses [2] 0   0   0 0
Reclassification Out Of Accumulated Other Comprehensive Income | Pension Liability Adjustment            
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]            
Income tax (expense) or benefit [1] 0   0   0 0
Net of tax $ 1   $ (1)   $ 1 $ 0
[1] Based on 21% tax rate
[2] These accumulated other comprehensive income components are included in the computation of net periodic benefit cost (see Note 12 for additional details).