Reserve for Future Policy Benefits and Contractholder Funds - Schedule of actual and expected experience for mortality, morbidity and lapses (Details) - Lapses	Mar. 31, 2023	Mar. 31, 2022
Accident and health insurance
Liability for Future Policy Benefit, Activity [Line Items]
Actual to expected ratio	90.00%	111.00%
Traditional life
Liability for Future Policy Benefit, Activity [Line Items]
Actual to expected ratio	92.00%	95.00%

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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