v3.26.1
Policyholder Account Balances - Narrative (Details) - The Lincoln National Life Insurance Company - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Dec. 31, 2024
Funding Agreement Backed Notes Program      
Policyholder Account Balance [Line Items]      
Funding agreement amount     $ 5,000
Funding agreement, amount issued $ 2,400 $ 1,500  
Funding Agreement-Backed Repurchase      
Policyholder Account Balance [Line Items]      
Funding agreement amount $ 800 800  
Funding agreement, term 5 years    
Federal Home Loan Bank      
Policyholder Account Balance [Line Items]      
Funding agreement, amount issued $ 1,600 $ 1,500  
Funding agreement, term 1 year    
Minimum | Funding Agreement Backed Notes Program      
Policyholder Account Balance [Line Items]      
Funding agreement, term 3 years    
Maximum | Funding Agreement Backed Notes Program      
Policyholder Account Balance [Line Items]      
Funding agreement, term 5 years