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Leases - Maturities of Operating Lease Liabilities (Detail) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Operating Leased Assets [Line Items]    
2022 $ 191  
2023 159  
2024 128  
2025 99  
2026 73  
Thereafter 286  
Total lease payments 936  
Less: Interest (122)  
Operating lease, liability 814 $ 1,000
Accounts Payable and Accrued Liabilities    
Operating Leased Assets [Line Items]    
Operating lease, liability 186 200
Other Liabilities    
Operating Leased Assets [Line Items]    
Operating lease, liability $ 628 $ 800