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Fair Value Measurements
 12 Months Ended
Dec. 31, 2025
Fair Value Disclosures [Abstract]  
Fair Value Measurements
11. Fair Value Measurements
The following disclosures present information about our fair value measurements using the inputs and fair value hierarchy discussed in Note 2. "Summary of Significant Accounting Policies and Recent Accounting Pronouncements".
Recurring Fair Value Disclosures. The following table presents information about our financial instruments measured at fair value on a recurring basis as of December 31, 2025 and 2024.
Financial Instruments Measured at Fair Value on a Recurring Basis
 December 31, 2025December 31, 2024
 (in millions)Quoted 
Prices in
Active Markets
for Identical
Assets (Level 1)		Significant
Other
Observable
Inputs 
(Level 2)		Significant
Unobservable
Inputs
(Level 3)		TotalQuoted
 Prices in
Active Markets
for Identical
Assets (Level 1)		Significant
Other
Observable
Inputs
 (Level 2)		Significant
Unobservable
Inputs
(Level 3)		Total
Other Assets
Deferred compensation plan investments (1)
$150.6 $— $— $150.6 $134.1 $— $— $134.1 
Derivative financial instruments (fair value hedge)— 4.9 — $4.9 — 5.3 — $5.3 
(1)Approximately $10.9 million and $17.7 million of participant cash was withdrawn from our deferred compensation plan investments during the years ended December 31, 2025 and 2024, respectively.
Nonrecurring Fair Value Disclosures. During the years ended December 31, 2025 and December 31, 2024, we recognized impairment expense associated with land development activities of approximately $12.9 million and $41.0 million, respectively, as further discussed in Note 7. "Acquisitions, Dispositions, and Impairments." The fair market value of the impaired land holdings during the years ended December 31, 2025 and 2024, totaled approximately $17.0 million and $46.7 million, respectively, which was determined using Level 3 inputs primarily based on comparable sales.
Financial Instrument Fair Value Disclosures. The following table presents the carrying and estimated fair values of our notes payable at December 31, 2025 and 2024.
 
 December 31, 2025December 31, 2024
(in millions)Carrying
Value		Estimated
Fair Value		Carrying
Value		Estimated
Fair Value
Fixed rate notes payable$2,766.9 $2,629.6 $2,764.4 $2,528.6 
Floating rate notes payable (1)
1,133.9 1,140.9 721.2 733.0 
(1)Includes the senior unsecured notes payable and a term loan due in 2026 at December 31, 2025 and 2024. At December 31, 2025, the floating rate notes payable also includes the commercial paper notes. At December 31, 2024, it also reflects outstanding balances under our unsecured revolving credit facility.