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Notes Payable (Narrative) (Details) $ in Thousands |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Jan. 04, 2024 USD ($) | Jun. 30, 2024 USD ($) yr | Jun. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) yr | Jun. 30, 2023 USD ($) | Dec. 31, 2023 USD ($)
Notes Payable | [1] |  | $ 3,552,800 |  | $ 3,552,800 |  | $ 3,715,400
Unamortized debt discounts and debt issuance costs |  |  | 18,100 |  | 18,100 |  | 5,500
Available amount under unsecured credit facility |  |  | 1,200,000 |  | 1,200,000 |  |
Repayment of notes payable |  |  |  |  | 550,000 | $ 437,749 |
Loss on early retirement of debt |  |  | $ 0 | $ (2,513) | $ (921) | $ (2,513) |
Weighted Average Interest Rate | [2],[3] |  | 4.20% |  | 4.20% |  |
Weighted average maturity of indebtedness (including unsecured line of credit) (in years) | yr |  |  | 6.4 |  | 6.4 |  |
Secured notes payable |  |  | $ 330,241 |  | $ 330,241 |  | 330,127
Letter Of Credit [Member] |  |  |  |  |  |  |
Maximum Ability to Issue Letters of Credit Under Unsecured Credit Facility |  |  | 50,000 |  | 50,000 |  |
Long-term Line of Credit |  |  | 27,700 |  | 27,700 |  |
Outstanding balance under credit facility |  |  | 27,700 |  | 27,700 |  |
Secured Debt |  |  |  |  |  |  |
Secured notes payable |  |  | 330,200 |  | $ 330,200 |  | 330,100
6.13% Unsecured revolving credit facility |  |  |  |  |  |  |
Terms Of Bid Rate Loans |  |  |  |  | 180 days |  |
Value not exceeding the amount available under the line of credit |  |  |  |  | $ 600,000 |  |
6.13% Unsecured revolving credit facility | September 2022 Credit Agreement |  |  |  |  |  |  |
Maximum borrowing capacity under unsecured credit facility |  |  | $ 1,200,000 |  | $ 1,200,000 |  |
6.13% Unsecured revolving credit facility | Commercial Banks [Member] |  |  |  |  |  |  |
Notes payable, effective interest rate |  |  | 6.13% |  | 6.13% |  |
Floating rate notes payable [Member] |  |  |  |  |  |  |
Notes Payable | [4] |  | $ 539,700 |  | $ 539,700 |  | $ 848,500
Weighted Average Interest Rate |  |  | 6.70% |  | 6.70% |  | 6.50%
6.21% Term Loan, due 2024 | Commercial Banks [Member] |  |  |  |  |  |  |
Repayment of notes payable |  | $ 300,000 |  |  |  |  |
Debt Instrument, Maturity Date |  |  |  |  | Aug. 30, 2024 |  |
Notes payable, effective interest rate |  | 6.21% | 6.21% |  | 6.21% |  |
6.21% Term Loan, due 2024 | Secured Debt |  |  |  |  |  |  |
Loss on early retirement of debt |  | $ 900 |  |  |  |  |
Four Point Nine Percentage Notes Due 2034 | Senior Unsecured Notes [Member] |  |  |  |  |  |  |
Proceeds from Issuance of Debt |  | $ 394,800 |  |  |  |  |
Debt Instrument, Interest Rate During Period |  | 4.946% |  |  |  |  |
Notes payable, effective interest rate |  | 4.90% |  |  |  |  |
Debt Instrument, Face Amount |  | $ 400,000 |  |  |  |  |
Discounted notes payable face amount |  | 99.638% |  |  |  |  |
4.36% Notes Due 2024 | Senior Unsecured Notes [Member] |  |  |  |  |  |  |
Repayment of notes payable |  | $ 250,000 |  |  |  |  |
Debt Instrument, Maturity Date |  |  |  |  | Jan. 15, 2024 |  |
Notes payable, effective interest rate |  | 4.36% | 4.36% |  | 4.36% |  |
[1] | Balances are decreased by unamortized debt discounts, debt issuance costs, and fair market value adjustments, net of $18.1 million and $5.5 million as of June 30, 2024 and December 31, 2023, respectively.
[2] | Includes all available extension options.
[3] | Includes the effects of the applicable settled derivatives.
[4] | Includes the senior unsecured notes payable due in 2026 at June 30, 2024 and December 31, 2023

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