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Future policy benefits (Weighted average interest rates) (Details) - Life Insurance [Member] | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Term Life Insurance |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |
Interest Accretion Rate | 2.80% | 2.50% | 2.40%
Current Discount Rate | 5.20% | 5.60% | 2.40%
Whole Life Insurance |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |
Interest Accretion Rate | 3.20% | 3.90% | 4.30%
Current Discount Rate | 4.60% | 5.40% | 4.20%
Accident and Health [Member] |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |
Interest Accretion Rate | 3.70% | 3.60% | 4.00%
Current Discount Rate | 6.20% | 6.30% | 3.50%
Insurance, Other [Member] |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |
Interest Accretion Rate | 2.60% | 3.70% | 3.40%
Current Discount Rate | 4.10% | 5.60% | 2.70%

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