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Schedule II - Condensed Financial Information of Registrant (Contractual Maturities for Long-Term Debt) (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Debt Instrument [Line Items]    
2021 $ 491  
2022 436  
2023 245  
2024 725  
2025 and thereafter 16,750  
Long-term debt 18,646 $ 17,378
Prudential Financial    
Debt Instrument [Line Items]    
2021 400  
2022 0  
2023 0  
2024 700  
2025 and thereafter 16,330  
Long-term debt $ 17,430 $ 16,141