Policyholder Account Balances - Narrative (Details) - FABN - Sustainable Financing - The Lincoln National Life Insurance Company - USD ($) $ in Billions	Jun. 30, 2025	Dec. 31, 2024
Policyholder Account Balance [Line Items]
Debt instrument, face amount	$ 5.0
Long-term debt	$ 1.0	$ 0.0

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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+ Details