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Notes and Contracts Payable (Aggregate Annual Maturities of Notes and Contracts Payable) (Detail) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Maturities of Long-term Debt [Abstract]    
2022 $ 7  
2023 255  
2024 300  
2025 0  
2026 0  
Thereafter 1,100  
Debt And Capital Lease Obligations Before Discounts Premiums Debt Issuance Costs $ 1,662 $ 1,018