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Separate Accounts - Schedule of Fair Value of Separate Account Assets (Details) - USD ($) $ in Millions | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Fair Value, Separate Account Investment [Line Items] |  |
Separate account assets | $ 172,942 | $ 168,438
Equity funds: | Domestic |  |
Fair Value, Separate Account Investment [Line Items] |  |
Separate account assets | 80,714 | 77,740
Equity funds: | International |  |
Fair Value, Separate Account Investment [Line Items] |  |
Separate account assets | 17,429 | 16,282
Equity funds: | Other equity funds |  |
Fair Value, Separate Account Investment [Line Items] |  |
Separate account assets | 1,430 | 1,403
Balanced funds |  |
Fair Value, Separate Account Investment [Line Items] |  |
Separate account assets | 46,127 | 45,683
Bond funds |  |
Fair Value, Separate Account Investment [Line Items] |  |
Separate account assets | 23,064 | 23,399
Money market funds |  |
Fair Value, Separate Account Investment [Line Items] |  |
Separate account assets | 2,058 | 1,931
Other funds |  |
Fair Value, Separate Account Investment [Line Items] |  |
Separate account assets | 1,413 | 1,321
Exchange-traded funds |  |
Fair Value, Separate Account Investment [Line Items] |  |
Separate account assets | 315 | 336
Fixed maturity AFS securities |  |
Fair Value, Separate Account Investment [Line Items] |  |
Separate account assets | 168 | 161
Cash and invested cash |  |
Fair Value, Separate Account Investment [Line Items] |  |
Separate account assets | 5 | 12
Other investments |  |
Fair Value, Separate Account Investment [Line Items] |  |
Separate account assets | $ 219 | $ 170

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