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Investments (excluding Consolidated Investment Entities) - Evaluating Securities for Impairments and Debt Restructuring (Narrative) (Details) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) loan | Jun. 30, 2023 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Intent impairments | $ | $ 5 | $ 7 | $ 5 | $ 7
Commercial mortgage loans |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Debt modifcations, number of contracts | loan |  |  | 0 | 0

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