v3.26.1
INVESTMENTS - Net Unrealized Gain (Losses) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Debt Securities, Available-For-Sale, Net Unrealized Investments [Roll Forward]        
Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance $ 1,860 $ 4,205 $ 1,466 $ 3,423
Net unrealized gains (losses) on investments 9 363 (688) 1,027
Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance 858 2,605 858 2,605
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent | Unrealized Investment Gains (Losses), All Other | Net Unrealized Gains (Losses) on Investments        
Debt Securities, Available-For-Sale, Net Unrealized Investments [Roll Forward]        
Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance (5,828) (7,226) (4,944) (8,074)
Net investment gains (losses) arising during the period (5) 466 (903) 1,310
Included in net income (loss) 23 36 43 44
Excluded from net income (loss) 0 0 0  
Other 0 0 0 0
Impact of net unrealized investment gains (losses) 0 0 0 0
Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance (5,815) (6,722) (5,815) (6,722)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent | Unrealized Investment Gains (Losses), All Other | Policyholders’ Liabilities        
Debt Securities, Available-For-Sale, Net Unrealized Investments [Roll Forward]        
Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance 19 66 24 71
Net investment gains (losses) arising during the period 0 0 0 0
Included in net income (loss) 0 0 0 0
Excluded from net income (loss) 0 0 0  
Other 0 0 0 0
Impact of net unrealized investment gains (losses) 3 0 (2) (5)
Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance 22 66 22 66
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent | Unrealized Investment Gains (Losses), All Other | Deferred Income Tax Asset (Liability)        
Debt Securities, Available-For-Sale, Net Unrealized Investments [Roll Forward]        
Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance 193 279 10 464
Net investment gains (losses) arising during the period 0 0 0 0
Included in net income (loss) 0 0 0 0
Excluded from net income (loss) 0 0 0  
Other (5) (33) (9) (41)
Impact of net unrealized investment gains (losses) (5) (106) 181 (283)
Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance 184 140 184 140
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent | Unrealized Investment Gains (Losses), All Other | AOCI Gain (Loss) Related to Net Unrealized Investment Gains (Losses)        
Debt Securities, Available-For-Sale, Net Unrealized Investments [Roll Forward]        
Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance (5,616) (6,881) (4,910) (7,539)
Net investment gains (losses) arising during the period (5) 466 (903) 1,310
Included in net income (loss) 23 36 43 44
Excluded from net income (loss) 0 0 0  
Other (5) (33) (9) (41)
Impact of net unrealized investment gains (losses) (2) (106) 179 (288)
Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance (5,609) (6,516) (5,609) (6,516)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent | Net unrealized investment gains (losses) excluding credit losses | Net Unrealized Gains (Losses) on Investments        
Debt Securities, Available-For-Sale, Net Unrealized Investments [Roll Forward]        
Net unrealized gains (losses) on investments (5,810) (6,724) (5,804) (6,720)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent | Net unrealized investment gains (losses) excluding credit losses | Policyholders’ Liabilities        
Debt Securities, Available-For-Sale, Net Unrealized Investments [Roll Forward]        
Net unrealized gains (losses) on investments 22 66 22 66
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent | Net unrealized investment gains (losses) excluding credit losses | Deferred Income Tax Asset (Liability)        
Debt Securities, Available-For-Sale, Net Unrealized Investments [Roll Forward]        
Net unrealized gains (losses) on investments 183 140 182 140
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent | Net unrealized investment gains (losses) excluding credit losses | AOCI Gain (Loss) Related to Net Unrealized Investment Gains (Losses)        
Debt Securities, Available-For-Sale, Net Unrealized Investments [Roll Forward]        
Net unrealized gains (losses) on investments (5,605) (6,518) (5,600) (6,514)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent | Net unrealized investment gains (losses) with credit losses | Net Unrealized Gains (Losses) on Investments        
Debt Securities, Available-For-Sale, Net Unrealized Investments [Roll Forward]        
Net unrealized gains (losses) on investments (5) 2 (11) (2)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent | Net unrealized investment gains (losses) with credit losses | Policyholders’ Liabilities        
Debt Securities, Available-For-Sale, Net Unrealized Investments [Roll Forward]        
Net unrealized gains (losses) on investments 0 0 0 0
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent | Net unrealized investment gains (losses) with credit losses | Deferred Income Tax Asset (Liability)        
Debt Securities, Available-For-Sale, Net Unrealized Investments [Roll Forward]        
Net unrealized gains (losses) on investments 1 0 2 0
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent | Net unrealized investment gains (losses) with credit losses | AOCI Gain (Loss) Related to Net Unrealized Investment Gains (Losses)        
Debt Securities, Available-For-Sale, Net Unrealized Investments [Roll Forward]        
Net unrealized gains (losses) on investments $ (4) $ 2 $ (9) $ (2)