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Derivative and Financial Instruments - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Derivative [Line Items]          
Debt securities, available-for-sale, unrealized gain     $ 14   $ 5
Debt securities, available-for-sale, allowance for credit loss $ 0   0   0
Proceeds from sales and redemptions of investments in debt securities classified as available for sale 142 $ 258 597 $ 809  
Derivative, net liability position, aggregate fair value 62   62   181
Collateral already posted, aggregate fair value 0   0   $ 0
Interest Rate Swap          
Derivative [Line Items]          
Unrealized gain (loss) (63) $ 46 (50) $ 46  
In event of downgrade below investment grade          
Derivative [Line Items]          
Additional collateral, aggregate fair value $ 38   $ 38    
Maximum          
Derivative [Line Items]          
Investments and long-term receivables, remaining maturity     4 years    
Minimum          
Derivative [Line Items]          
Investments and long-term receivables, remaining maturity     1 year    
Accounts Receivable | Maximum          
Derivative [Line Items]          
Credit derivative, term     30 days