v3.26.1
SHAREHOLDERS' EQUITY - Changes in Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Accumulated Other Comprehensive Income [Roll Forward]        
Balance, beginning of period $ 29,961 $ 26,338 $ 29,490 $ 26,098
Other comprehensive income (loss), net of tax 780 1,368 1,229 2,487
Balance, end of period 30,312 27,200 30,312 27,200
Unrealized Foreign Currency Translation Gains (Losses)        
Accumulated Other Comprehensive Income [Roll Forward]        
Balance, beginning of period (4,961) (4,549) (4,847) (4,998)
Other comprehensive income (loss) before reclassifications net of tax (87) 267 (201) 716
Amounts reclassified from accumulated other comprehensive income (loss) net of tax 0 0 0 0
Other comprehensive income (loss), net of tax (87) 267 (201) 716
Balance, end of period (5,048) (4,282) (5,048) (4,282)
Unrealized Gains (Losses) on Fixed Maturity Securities        
Accumulated Other Comprehensive Income [Roll Forward]        
Balance, beginning of period (2,665) (1,233) (1,809) 24
Other comprehensive income (loss) before reclassifications net of tax (281) (606) (1,148) (1,831)
Amounts reclassified from accumulated other comprehensive income (loss) net of tax 193 11 204 (21)
Other comprehensive income (loss), net of tax (88) (595) (944) (1,852)
Balance, end of period (2,753) (1,828) (2,753) (1,828)
Unrealized Gains (Losses) on Derivatives        
Accumulated Other Comprehensive Income [Roll Forward]        
Balance, beginning of period (16) (18) (13) (20)
Other comprehensive income (loss) before reclassifications net of tax 0 0 0 1
Amounts reclassified from accumulated other comprehensive income (loss) net of tax 0 1 (3) 2
Other comprehensive income (loss), net of tax 0 1 (3) 3
Balance, end of period (16) (17) (16) (17)
Effect of Changes in Discount Rate Assumptions        
Accumulated Other Comprehensive Income [Roll Forward]        
Balance, beginning of period 9,458 3,899 8,035 2,006
Other comprehensive income (loss) before reclassifications net of tax 957 1,695 2,380 3,588
Amounts reclassified from accumulated other comprehensive income (loss) net of tax 0 0 0 0
Other comprehensive income (loss), net of tax 957 1,695 2,380 3,588
Balance, end of period 10,415 5,594 10,415 5,594
Pension Liability Adjustment        
Accumulated Other Comprehensive Income [Roll Forward]        
Balance, beginning of period 85 42 86 10
Other comprehensive income (loss) before reclassifications net of tax (1) (1) (2) 32
Amounts reclassified from accumulated other comprehensive income (loss) net of tax (1) 1 (1) 0
Other comprehensive income (loss), net of tax (2) 0 (3) 32
Balance, end of period 83 42 83 42
Accumulated Other Comprehensive Income (Loss)        
Accumulated Other Comprehensive Income [Roll Forward]        
Balance, beginning of period 1,901 (1,859) 1,452 (2,978)
Other comprehensive income (loss) before reclassifications net of tax 588 1,355 1,029 2,506
Amounts reclassified from accumulated other comprehensive income (loss) net of tax 192 13 200 (19)
Other comprehensive income (loss), net of tax 780 1,368 1,229 2,487
Balance, end of period $ 2,681 $ (491) $ 2,681 $ (491)