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INVESTMENTS - Net Unrealized Gain (Losses) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Debt Securities, Available-For-Sale, Net Unrealized Investments [Roll Forward] |  |
Balance, beginning of period | $ 3,423 | $ 4,375
Net unrealized investment gains (losses) | 664 | (522)
Balance, end of period | 4,205 | 3,715
Valuation allowance | 225 |
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] |  |
Balance, beginning of period | (8,074) | (6,999)
Net investment gains (losses) arising during the period | 844 | (683)
Included in net income (loss) | 8 | 26
Other | 0 | 0
Impact of net unrealized investment gains (losses) | 0 | 0
Balance, end of period | (7,226) | (7,660)
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] |  |
Balance, beginning of period | 71 | 50
Net investment gains (losses) arising during the period | 0 | 0
Included in net income (loss) | 0 | 0
Other | 0 | 0
Impact of net unrealized investment gains (losses) | (5) | 13
Balance, end of period | 66 | 63
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] |  |
Balance, beginning of period | 464 | 226
Net investment gains (losses) arising during the period | 0 | 0
Included in net income (loss) | 0 | 0
Other | (8) | (3)
Impact of net unrealized investment gains (losses) | (178) | 134
Balance, end of period | 279 | 358
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] |  |
Balance, beginning of period | (7,539) | (6,723)
Net investment gains (losses) arising during the period | 844 | (683)
Included in net income (loss) | 8 | 26
Other | (8) | (3)
Impact of net unrealized investment gains (losses) | (183) | 147
Balance, end of period | (6,881) | (7,239)
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 investment gains (losses) | (7,222) | (7,656)
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 investment gains (losses) | 66 | 63
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 investment gains (losses) | 278 | 357
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 investment gains (losses) | (6,878) | (7,236)
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 investment gains (losses) | (4) | (4)
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 investment gains (losses) | 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 investment gains (losses) | 1 | 1
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 investment gains (losses) | $ (3) | $ (3)

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