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Long-Term Debt (Aggregate Maturities of Long-Term Debt) (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Debt Disclosure [Abstract]    
2023 $ 1,556  
2024 1,121  
2025 1,553  
2026 1,569  
2027 1,113  
Thereafter 20,000  
Long-term debt before debt issuance costs and debt discount 26,912  
Less: debt issuance costs 148  
Less: debt discounts 84  
Long-term debt $ 26,680 $ 28,044