Policyholder Account Balances - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Policyholder Account Balance [Line Items]
Total	$ 1,426
Funding Agreement Backed Notes Program \| The Lincoln National Life Insurance Company \| Federal Home Loan Bank
Policyholder Account Balance [Line Items]
Total	$ 1,500	$ 0
Maturity period	1 year
Funding Agreement Backed Notes Program \| Sustainable Financing \| The Lincoln National Life Insurance Company
Policyholder Account Balance [Line Items]
Debt instrument, face amount		5,000
Total	$ 1,500	0
Funding Agreement Backed Notes Program \| Sustainable Financing \| The Lincoln National Life Insurance Company \| Minimum
Policyholder Account Balance [Line Items]
Maturity period	3 years
Funding Agreement Backed Notes Program \| Sustainable Financing \| The Lincoln National Life Insurance Company \| Maximum
Policyholder Account Balance [Line Items]
Maturity period	5 years
Funding Agreement Backed Notes Program \| Secured Debt \| The Lincoln National Life Insurance Company
Policyholder Account Balance [Line Items]
Total	$ 800	$ 0
Maturity period	5 years