v3.26.3
SHAREHOLDERS' EQUITY - Changes in Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Accumulated Other Comprehensive Income [Roll Forward]        
Balance, beginning of period $ 30,312 $ 27,200 $ 29,490 $ 26,098
Other comprehensive income (loss), net of tax (268) 1,144 961 3,631
Balance, end of period 29,283 28,688 29,283 28,688
Unrealized Foreign Currency Translation Gains (Losses)        
Accumulated Other Comprehensive Income [Roll Forward]        
Balance, beginning of period (5,048) (4,282) (4,847) (4,998)
Other comprehensive income (loss) before reclassifications net of tax 123 (222) (78) 494
Amounts reclassified from accumulated other comprehensive income (loss) net of tax 0 0 0 0
Other comprehensive income (loss), net of tax 123 (222) (78) 494
Balance, end of period (4,925) (4,504) (4,925) (4,504)
Unrealized Gains (Losses) on Fixed Maturity Securities        
Accumulated Other Comprehensive Income [Roll Forward]        
Balance, beginning of period (2,753) (1,828) (1,809) 24
Other comprehensive income (loss) before reclassifications net of tax (2,907) 152 (4,055) (1,679)
Amounts reclassified from accumulated other comprehensive income (loss) net of tax 665 (25) 869 (46)
Other comprehensive income (loss), net of tax (2,242) 127 (3,186) (1,725)
Balance, end of period (4,995) (1,701) (4,995) (1,701)
Unrealized Gains (Losses) on Derivatives        
Accumulated Other Comprehensive Income [Roll Forward]        
Balance, beginning of period (16) (17) (13) (20)
Other comprehensive income (loss) before reclassifications net of tax 0 0 0 2
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) 4
Balance, end of period (16) (16) (16) (16)
Effect of Changes in Discount Rate Assumptions        
Accumulated Other Comprehensive Income [Roll Forward]        
Balance, beginning of period 10,415 5,594 8,035 2,006
Other comprehensive income (loss) before reclassifications net of tax 1,849 1,238 4,229 4,826
Amounts reclassified from accumulated other comprehensive income (loss) net of tax 0 0 0 0
Other comprehensive income (loss), net of tax 1,849 1,238 4,229 4,826
Balance, end of period 12,264 6,832 12,264 6,832
Pension Liability Adjustment        
Accumulated Other Comprehensive Income [Roll Forward]        
Balance, beginning of period 83 42 86 10
Other comprehensive income (loss) before reclassifications net of tax 3 0 1 32
Amounts reclassified from accumulated other comprehensive income (loss) net of tax (1) 0 (2) 0
Other comprehensive income (loss), net of tax 2 0 (1) 32
Balance, end of period 85 42 85 42
Accumulated Other Comprehensive Income (Loss)        
Accumulated Other Comprehensive Income [Roll Forward]        
Balance, beginning of period 2,681 (491) 1,452 (2,978)
Other comprehensive income (loss) before reclassifications net of tax (932) 1,168 97 3,675
Amounts reclassified from accumulated other comprehensive income (loss) net of tax 664 (24) 864 (44)
Other comprehensive income (loss), net of tax (268) 1,144 961 3,631
Balance, end of period $ 2,413 $ 653 $ 2,413 $ 653