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Notes and Contracts Payable (Aggregate Annual Maturities of Notes and Contracts Payable) (Detail) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Maturities of Long-term Debt [Abstract]    
2025 $ 3.5  
2026 3.2  
2027 2.1  
2028 2.0  
2029 0.2  
Thereafter 1,550.0  
Debt And Capital Lease Obligations Before Discounts Premiums Debt Issuance Costs $ 1,561.0 $ 1,404.2