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Derivative and Financial Instruments - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Derivative [Line Items]          
Debt securities, available-for-sale, unrealized loss     $ 5    
Debt securities, available-for-sale, unrealized gain         $ 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 231 $ 251 455 $ 551  
Derivative, net liability position, aggregate fair value 134   134   181
Collateral already posted, aggregate fair value 8   8   $ 0
Interest Rate Swap          
Derivative [Line Items]          
Unrealized gain 33   13    
In event of downgrade below investment grade          
Derivative [Line Items]          
Additional collateral, aggregate fair value $ 92   $ 92    
Maximum          
Derivative [Line Items]          
Investments and long-term receivables, remaining maturity     5 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