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Indebtedness - Principal Payments Due on Long-Term Borrowings (Detail) - USD ($)
$ in Millions
Sep. 30, 2023
Dec. 31, 2022
Debt Disclosure [Abstract]    
2023 (After September 30,) $ 0  
2024 0  
2025 700  
2026 0  
2027 529  
Thereafter 5,994  
Total principal payment $ 7,223 $ 7,734