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v3.25.2

Investments - Debt Securities (Details) - USD ($) $ in Millions | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | $ 26,656 | $ 26,562
Gross Unrealized Gains | 347 | 178
Gross Unrealized Losses | (449) | (707)
Fair Value | 26,554 | 26,033
Allowance for expected credit losses | 0 | 0
Supporting experience-rated products |  |
Debt Securities, Available-for-sale [Line Items] |  |
Gross Unrealized Gains | 8 | 5
Gross Unrealized Losses | (21) | (30)
Fair Value | 501 | 543
U.S. government securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 2,759 | 2,826
Gross Unrealized Gains | 35 | 7
Gross Unrealized Losses | (11) | (38)
Fair Value | 2,783 | 2,795
States, municipalities and political subdivisions |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 331 | 712
Gross Unrealized Gains | 2 | 4
Gross Unrealized Losses | (12) | (18)
Fair Value | 321 | 698
U.S. corporate securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 13,387 | 13,043
Gross Unrealized Gains | 207 | 94
Gross Unrealized Losses | (283) | (412)
Fair Value | 13,311 | 12,725
Foreign securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 2,742 | 2,608
Gross Unrealized Gains | 45 | 27
Gross Unrealized Losses | (58) | (111)
Fair Value | 2,729 | 2,524
Residential mortgage-backed securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 837 | 792
Gross Unrealized Gains | 6 | 2
Gross Unrealized Losses | (40) | (54)
Fair Value | 803 | 740
Commercial mortgage-backed securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 1,780 | 1,731
Gross Unrealized Gains | 22 | 9
Gross Unrealized Losses | (41) | (67)
Fair Value | 1,761 | 1,673
Other asset-backed securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 4,806 | 4,834
Gross Unrealized Gains | 30 | 35
Gross Unrealized Losses | (4) | (7)
Fair Value | 4,832 | 4,862
Redeemable preferred securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 14 | 16
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Fair Value | $ 14 | $ 16

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