Future Policy Benefits - Weighted Average Interest Rates (Details)	Dec. 31, 2025	Dec. 31, 2024
Individual Life [Member]
Future Policy Benefits [Abstract]
Interest accretion (locked-in) rate	4.90%	4.50%
Current discount rate	5.30%	5.50%
Group Life [Member]
Future Policy Benefits [Abstract]
Interest accretion (locked-in) rate	5.00%	4.60%
Current discount rate	5.90%	5.90%
Medical Supplement [Member]
Future Policy Benefits [Abstract]
Interest accretion (locked-in) rate	4.80%	3.60%
Current discount rate	6.40%	6.00%
Other Individual Health [Member]
Future Policy Benefits [Abstract]
Interest accretion (locked-in) rate	4.00%	3.80%
Current discount rate	5.50%	5.70%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details