v3.26.1
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Schedule of Changes in Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Millions
 3 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance $ 16,891 $ 17,917 $ 13,010 $ 13,076
Ending balance 17,851 16,891 15,839 13,010
Total        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance 707 1,121 548 204
Other comprehensive income (loss) before reclassifications (674) (535) 165 437
Amounts reclassified to net income (91) 9 (37) (6)
Deferred income tax benefit (expense) 160 112 (3) (87)
Ending balance 102 707 673 548
Change in Net Unrealized Investment Gains (Losses)        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance 18 754 306 (12)
Other comprehensive income (loss) before reclassifications 208 (947) 109 410
Amounts reclassified to net income 6 9 (37) (6)
Deferred income tax benefit (expense) (58) 202 6 (86)
Ending balance 174 18 384 306
Foreign Currency Translation        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance 15 16 (23) (61)
Other comprehensive income (loss) before reclassifications (2) (1) 152 46
Amounts reclassified to net income 0 0 0 0
Deferred income tax benefit (expense) (3) 0 (21) (8)
Ending balance 10 15 108 (23)
Change in Discount Rate for Future Policy Benefits        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance 461 280 304 362
Other comprehensive income (loss) before reclassifications (720) 233 6 (83)
Amounts reclassified to net income (97) 0 0 0
Deferred income tax benefit (expense) 187 (52) (14) 25
Ending balance (169) 461 296 304
Change in Instrument-Specific Credit Risk for Market Risk Benefits        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance 140 (3) (140) (189)
Other comprehensive income (loss) before reclassifications (156) 182 (99) 68
Amounts reclassified to net income 0 0 0 0
Deferred income tax benefit (expense) 33 (39) 25 (19)
Ending balance 17 140 (214) (140)
Defined Benefit Pension Plan Adjustment        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance 73 74 101 104
Other comprehensive income (loss) before reclassifications (4) (2) (3) (4)
Amounts reclassified to net income 0 0 0 0
Deferred income tax benefit (expense) 1 1 1 1
Ending balance $ 70 $ 73 $ 99 $ 101