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Fair Value Information Narrative (Details) - Fair Value, Measurements, Recurring - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Fair Value, Inputs, Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Derivative Assets $ 70 $ 99
Derivative Liability 259 318
Fair Value, Inputs, Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Redeemable Preferred Securities Of Subsidiaries Fair Value Disclosure 26 258
Net Asset Value or Its Equivalent    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Company-owned life insurance (COLI) $ 67 $ 63