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Investments - Unrealized Loss Position Maturities (Details) - USD ($) $ in Millions | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Fair Value |  |
Less than one year | $ 478 |
One year through five years | 2,996 |
After five years through ten years | 1,112 |
Greater than ten years | 1,484 |
Fair Value | 7,455 | $ 12,548
Unrealized Losses |  |
Less than one year | 5 |
One year through five years | 109 |
After five years through ten years | 90 |
Greater than ten years | 153 |
Unrealized Losses | 453 | 836
Residential mortgage-backed securities |  |
Fair Value |  |
Debt securities, maturity, without single maturity date, fair value | 397 |
Fair Value | 397 | 614
Unrealized Losses |  |
Debt securities, maturity, without single maturity date, unrealized losses | 33 |
Unrealized Losses | 33 | 60
Commercial mortgage-backed securities |  |
Fair Value |  |
Debt securities, maturity, without single maturity date, fair value | 638 |
Fair Value | 638 | 675
Unrealized Losses |  |
Debt securities, maturity, without single maturity date, unrealized losses | 58 |
Unrealized Losses | 58 | 100
Other asset-backed securities |  |
Fair Value |  |
Debt securities, maturity, without single maturity date, fair value | 350 |
Fair Value | 350 | 1,316
Unrealized Losses |  |
Debt securities, maturity, without single maturity date, unrealized losses | 5 |
Unrealized Losses | 5 | $ 18
Supporting experience-rated products |  |
Fair Value |  |
Less than one year | 1 |
One year through five years | 65 |
After five years through ten years | 48 |
Greater than ten years | 106 |
Fair Value | 246 |
Unrealized Losses |  |
Less than one year | 0 |
One year through five years | 2 |
After five years through ten years | 4 |
Greater than ten years | 9 |
Unrealized Losses | 16 |
Supporting experience-rated products | Residential mortgage-backed securities |  |
Fair Value |  |
Debt securities, maturity, without single maturity date, fair value | 6 |
Unrealized Losses |  |
Debt securities, maturity, without single maturity date, unrealized losses | 0 |
Supporting experience-rated products | Commercial mortgage-backed securities |  |
Fair Value |  |
Debt securities, maturity, without single maturity date, fair value | 10 |
Unrealized Losses |  |
Debt securities, maturity, without single maturity date, unrealized losses | 1 |
Supporting experience-rated products | Other asset-backed securities |  |
Fair Value |  |
Debt securities, maturity, without single maturity date, fair value | 10 |
Unrealized Losses |  |
Debt securities, maturity, without single maturity date, unrealized losses | 0 |
Supporting remaining products |  |
Fair Value |  |
Less than one year | 477 |
One year through five years | 2,931 |
After five years through ten years | 1,064 |
Greater than ten years | 1,378 |
Fair Value | 7,209 |
Unrealized Losses |  |
Less than one year | 5 |
One year through five years | 107 |
After five years through ten years | 86 |
Greater than ten years | 144 |
Unrealized Losses | 437 |
Supporting remaining products | Residential mortgage-backed securities |  |
Fair Value |  |
Debt securities, maturity, without single maturity date, fair value | 391 |
Unrealized Losses |  |
Debt securities, maturity, without single maturity date, unrealized losses | 33 |
Supporting remaining products | Commercial mortgage-backed securities |  |
Fair Value |  |
Debt securities, maturity, without single maturity date, fair value | 628 |
Unrealized Losses |  |
Debt securities, maturity, without single maturity date, unrealized losses | 57 |
Supporting remaining products | Other asset-backed securities |  |
Fair Value |  |
Debt securities, maturity, without single maturity date, fair value | 340 |
Unrealized Losses |  |
Debt securities, maturity, without single maturity date, unrealized losses | $ 5 |

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