Nature of Operations, Basis of Presentation and Summary of Significant Accounting Policies (Narrative) (Details)	3 Months Ended
	Mar. 31, 2023 item segment
Product Information [Line Items]
Number of segments | segment	4
Maximum net premium ratio at individual cohort level	100.00%
Sales Force Intangibles [Member]
Product Information [Line Items]
Useful Life of Intangible Assets (In Years)	25 years
VOCRA [Member]
Product Information [Line Items]
Useful Life of Intangible Assets (In Years)	20 years
VODA [Member]
Product Information [Line Items]
Useful Life of Intangible Assets (In Years)	13 years
Commercial [Member]
Product Information [Line Items]
Number of days past due to qualify as delinquent	60 days
Number of missed payments to qualify as delinquent	2
Period In Which Loans No Longer Accrue Interest In Days	90 days
Loan-to-value ratio indicating principal is greater than collateral	100.00%
Debt-service coverage ratio indicating property income not covering debt payments	1.0
Residential [Member]
Product Information [Line Items]
Period In Which Loans No Longer Accrue Interest In Days	90 days
Number of missed payments to qualify loans as non-accrual	3
Resolution Life [Member]
Product Information [Line Items]
No. of Years in Which Deferred Gain From Reinsurance Transaction is Recognized as Income	30 years
Swiss Re [Member]
Product Information [Line Items]
No. of Years in Which Deferred Gain From Reinsurance Transaction is Recognized as Income	15 years
Athene Holding Ltd. [Member]
Product Information [Line Items]
No. of Years in Which Deferred Gain From Reinsurance Transaction is Recognized as Income	20 years