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Schedule II - Condensed Financial Information of Registrant (Contractual Maturities for Long-Term Debt) (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Debt Instrument [Line Items]    
2021 $ 136  
2022 572  
2023 724  
2024 348  
2025 and thereafter 17,938  
Long-term debt 19,718 $ 18,646
Prudential Financial    
Debt Instrument [Line Items]    
2021 0  
2022 0  
2023 700  
2024 0  
2025 and thereafter 17,861  
Long-term debt $ 18,561 $ 17,430