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v3.25.1

Investments - Investments - ACL on Mortgages (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 USD ($) | Mar. 31, 2024 USD ($) | Mar. 31, 2025 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Number of loans with modifications | 0 | 0 | 1
Commercial Loan [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Beginning balance | $ (44) | $ (51) | $ (48)
Current period provision | 0 | (3) |
Financing Receivable, Allowance for Credit Loss, Writeoff | $ (1) | $ 0 |

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