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Fair Value of Long-Term Debt (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term Debt, Carrying Amount $ 25,066 $ 23,964
Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term Debt, Fair Value $ 21,855 $ 20,897