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%