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Contractual interest rate for funds borrowed, under the debt agreement.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Policyholders' Account Balances - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Policyholder Account Balance [Line Items]
Policyholder Account Balance	$ 147,018	$ 135,624	$ 123,042
Capacity	2,000
Medium-term Notes \| FANIP
Policyholder Account Balance [Line Items]
Capacity	15,000
Debt Instrument, Face Amount	$ 3,474	2,968	3,117
Medium-term Notes \| FANIP \| Minimum
Policyholder Account Balance [Line Items]
Interest Rate	0.00%
Maturities	3 months
Medium-term Notes \| FANIP \| Maximum
Policyholder Account Balance [Line Items]
Interest Rate	5.60%
Maturities	5 years
Commercial paper \| FANIP
Policyholder Account Balance [Line Items]
Capacity	$ 6,000
Debt Instrument, Face Amount	$ 2,156	2,130	1,847
Commercial paper \| FANIP \| Minimum
Policyholder Account Balance [Line Items]
Interest Rate	0.00%
Maturities	3 months
Commercial paper \| FANIP \| Maximum
Policyholder Account Balance [Line Items]
Interest Rate	5.60%
Maturities	5 years
Secured debt \| FHLBNY
Policyholder Account Balance [Line Items]
Debt Instrument, Face Amount	$ 2,628	2,628	1,050
Secured debt \| FHLBNY \| Minimum
Policyholder Account Balance [Line Items]
Interest Rate	1.925%
Maturities	9 months
Secured debt \| FHLBNY \| Maximum
Policyholder Account Balance [Line Items]
Interest Rate	4.51%
Maturities	7 years
Institutional Retirement Strategies And Life Planner
Policyholder Account Balance [Line Items]
Policyholder Account Balance	$ 5,597	$ 5,064	$ 4,959