Nature of Operations, Basis of Presentation and Summary of Significant Accounting Policies (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) item	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Product Information [Line Items]
Estimated Contract Life UL Policies (In Years)	40 years
Estimated Contract Life VUL Policies (In Years)	40 years
Front End Load Annuity Products Assumed Life (In Years)	25 years
Number Of Scenarios Used Per Policy To Value A Block Of Guarantees	100
Total Scenarios To Value GLB liability	45,000,000
Dividend Expenses | $	$ 48	$ 53	$ 51
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
Maximum [Member]
Product Information [Line Items]
Estimated Contract Life Fixed and Variable Deferred Annuities (In Years)	30 years
Traditional Contract Acquisition Cost Amortization Period (In Years)	30 years
Participating Policies as a Percentage of the Face Amount of the Insurance In Force	1.00%	1.00%	1.00%
Minimum [Member]
Product Information [Line Items]
Estimated Contract Life Fixed and Variable Deferred Annuities (In Years)	15 years
Life Insurance Segment [Member] | Maximum [Member]
Product Information [Line Items]
Investment Yield Assumptions for Traditional Direct Individual Life Reserves	7.75%
Life Insurance Segment [Member] | Minimum [Member]
Product Information [Line Items]
Investment Yield Assumptions for Traditional Direct Individual Life Reserves	2.25%
Annuities Segment [Member] | Maximum [Member]
Product Information [Line Items]
Investment Yield Assumptions for Immediate and Deferred Paid-Up Annuities	12.75%
Annuities Segment [Member] | Minimum [Member]
Product Information [Line Items]
Investment Yield Assumptions for Immediate and Deferred Paid-Up Annuities	0.50%
Commercial [Member]
Product Information [Line Items]
Number of days past due to qualify as delinquent	60 days
Number of missed payments to qualify as delinqent	2
Period In Which Loans No Longer Accrue Interest In Days	90 days
Number of missed payments to qualify loans as non-accrual	3
Loan-to-value ratio indicating principal is greater than collateral	100.00%
Commercial [Member] | Maximum [Member]
Product Information [Line Items]
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
Athene Holding Ltd. [Member]
Product Information [Line Items]
No. of Years in Which Deferred Gain From Reinsurance Transaction is Recognized as Income	20 years