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Premises and Equipment - Summary of Minimum Lease Payments Under Noncancelable Operating Leases (Detail) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Property Plant And Equipment Capitalized Interest Costs [Abstract]    
2024 $ 162  
2025 145  
2026 122  
2027 101  
2028 75  
Later years 208  
Total lease payments 813  
Less: imputed interest 96  
Operating lease liabilities $ 717 $ 709