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v3.25.2

Detail of secured and unsecured debt (Details) - USD ($) $ in Thousands | 6 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jun. 30, 2025 | Sep. 30, 2024 | Feb. 28, 2025
Debt Instrument |  |  |
Effective rate (as a percent) | 4.01% |  |
Future principal payments due on secured and unsecured debt |  |  |
2025 | $ 0 |  |
2026 | 803,624 |  |
2027 | 350,000 |  |
2028 | 425,000 |  |
2029 | 700,000 |  |
Thereafter | 11,100,000 |  |
Principal | 13,378,624 |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (84,524) |  |
Total Consolidated | $ 13,294,100 |  |
99 Coolidge Avenue | Alexandria |  |  |
Debt Instrument |  |  |
Noncontrolling Interest, Ownership Percentage by Parent | 76.90% |  |
Secured notes payable |  |  |
Debt Instrument |  |  |
Effective rate (as a percent) | 7.16% |  |
Future principal payments due on secured and unsecured debt |  |  |
Total Consolidated | $ 153,500 |  |
Secured notes payable maturing on 11/19/26 |  |  |
Debt Instrument |  |  |
Applicable margin (as a percent) | 2.70% |  |
Effective rate (as a percent) | 7.16% |  |
Maturity Date | Nov. 19, 2026 |  |
Future principal payments due on secured and unsecured debt |  |  |
2025 | $ 0 |  |
2026 | 153,624 |  |
2027 | 0 |  |
2028 | 0 |  |
2029 | 0 |  |
Thereafter | 0 |  |
Principal | 153,624 |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (124) |  |
Total Consolidated | 153,500 |  |
Secured notes payable maturing on 11/19/26 | 99 Coolidge Avenue |  |  |
Debt Instrument |  |  |
Debt Instrument, Unused Borrowing Capacity, Amount | $ 41,700 |  |
Unsecured Debt |  |  |
Debt Instrument |  |  |
Effective rate (as a percent) | 3.97% |  |
Future principal payments due on secured and unsecured debt |  |  |
2025 | $ 0 |  |
2026 | 650,000 |  |
2027 | 350,000 |  |
2028 | 425,000 |  |
2029 | 700,000 |  |
Thereafter | 11,100,000 |  |
Principal | 13,225,000 |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (84,400) |  |
Total Consolidated | $ 13,140,600 |  |
Unsecured senior line of credit |  |  |
Debt Instrument |  |  |
Applicable margin (as a percent) | 0.855% | 0.875% |
Line of Credit Facility, Maximum Borrowing Capacity | $ 5,000,000 |  |
Future principal payments due on secured and unsecured debt |  |  |
Total Consolidated | $ 0 |  |
4.30% Unsecured Senior Notes Payable |  |  |
Debt Instrument |  |  |
Stated interest rate (as a percent) | 4.30% |  |
Effective rate (as a percent) | 4.50% |  |
Maturity Date | Jan. 15, 2026 |  |
Future principal payments due on secured and unsecured debt |  |  |
2025 | $ 0 |  |
2026 | 300,000 |  |
2027 | 0 |  |
2028 | 0 |  |
2029 | 0 |  |
Thereafter | 0 |  |
Principal | 300,000 |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (284) |  |
Total Consolidated | $ 299,716 |  |
3.80% Unsecured Senior Notes Payable |  |  |
Debt Instrument |  |  |
Stated interest rate (as a percent) | 3.80% |  |
Effective rate (as a percent) | 3.96% |  |
Maturity Date | Apr. 15, 2026 |  |
Future principal payments due on secured and unsecured debt |  |  |
2025 | $ 0 |  |
2026 | 350,000 |  |
2027 | 0 |  |
2028 | 0 |  |
2029 | 0 |  |
Thereafter | 0 |  |
Principal | 350,000 |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (408) |  |
Total Consolidated | $ 349,592 |  |
3.95% Unsecured Senior Notes Payable Due in 2027 |  |  |
Debt Instrument |  |  |
Stated interest rate (as a percent) | 3.95% |  |
Effective rate (as a percent) | 4.13% |  |
Maturity Date | Jan. 15, 2027 |  |
Future principal payments due on secured and unsecured debt |  |  |
2025 | $ 0 |  |
2026 | 0 |  |
2027 | 350,000 |  |
2028 | 0 |  |
2029 | 0 |  |
Thereafter | 0 |  |
Principal | 350,000 |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (812) |  |
Total Consolidated | $ 349,188 |  |
3.95% Unsecured Senior Notes Payable Due in 2028 |  |  |
Debt Instrument |  |  |
Stated interest rate (as a percent) | 3.95% |  |
Effective rate (as a percent) | 4.07% |  |
Maturity Date | Jan. 15, 2028 |  |
Future principal payments due on secured and unsecured debt |  |  |
2025 | $ 0 |  |
2026 | 0 |  |
2027 | 0 |  |
2028 | 425,000 |  |
2029 | 0 |  |
Thereafter | 0 |  |
Principal | 425,000 |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (1,100) |  |
Total Consolidated | $ 423,900 |  |
4.50% Unsecured Senior Notes Payable |  |  |
Debt Instrument |  |  |
Stated interest rate (as a percent) | 4.50% |  |
Effective rate (as a percent) | 4.60% |  |
Maturity Date | Jul. 30, 2029 |  |
Future principal payments due on secured and unsecured debt |  |  |
2025 | $ 0 |  |
2026 | 0 |  |
2027 | 0 |  |
2028 | 0 |  |
2029 | 300,000 |  |
Thereafter | 0 |  |
Principal | 300,000 |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (916) |  |
Total Consolidated | $ 299,084 |  |
2.75% Unsecured Senior Notes Payable Due 2029 |  |  |
Debt Instrument |  |  |
Stated interest rate (as a percent) | 2.75% |  |
Effective rate (as a percent) | 2.87% |  |
Maturity Date | Dec. 15, 2029 |  |
Future principal payments due on secured and unsecured debt |  |  |
2025 | $ 0 |  |
2026 | 0 |  |
2027 | 0 |  |
2028 | 0 |  |
2029 | 400,000 |  |
Thereafter | 0 |  |
Principal | 400,000 |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (1,860) |  |
Total Consolidated | $ 398,140 |  |
4.70% Unsecured Senior Notes Payable |  |  |
Debt Instrument |  |  |
Stated interest rate (as a percent) | 4.70% |  |
Effective rate (as a percent) | 4.81% |  |
Maturity Date | Jul. 01, 2030 |  |
Future principal payments due on secured and unsecured debt |  |  |
2025 | $ 0 |  |
2026 | 0 |  |
2027 | 0 |  |
2028 | 0 |  |
2029 | 0 |  |
Thereafter | 450,000 |  |
Principal | 450,000 |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (1,872) |  |
Total Consolidated | $ 448,128 |  |
4.90% Unsecured Senior Notes Payable |  |  |
Debt Instrument |  |  |
Stated interest rate (as a percent) | 4.90% |  |
Effective rate (as a percent) | 5.05% |  |
Maturity Date | Dec. 15, 2030 |  |
Future principal payments due on secured and unsecured debt |  |  |
2025 | $ 0 |  |
2026 | 0 |  |
2027 | 0 |  |
2028 | 0 |  |
2029 | 0 |  |
Thereafter | 700,000 |  |
Principal | 700,000 |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (4,339) |  |
Total Consolidated | $ 695,661 |  |
3.375% Unsecured Senior Notes Payable |  |  |
Debt Instrument |  |  |
Stated interest rate (as a percent) | 3.375% |  |
Effective rate (as a percent) | 3.48% |  |
Maturity Date | Aug. 15, 2031 |  |
Future principal payments due on secured and unsecured debt |  |  |
2025 | $ 0 |  |
2026 | 0 |  |
2027 | 0 |  |
2028 | 0 |  |
2029 | 0 |  |
Thereafter | 750,000 |  |
Principal | 750,000 |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (4,027) |  |
Total Consolidated | $ 745,973 |  |
2.00% Unsecured Senior Notes Payable |  |  |
Debt Instrument |  |  |
Stated interest rate (as a percent) | 2.00% |  |
Effective rate (as a percent) | 2.12% |  |
Maturity Date | May 18, 2032 |  |
Future principal payments due on secured and unsecured debt |  |  |
2025 | $ 0 |  |
2026 | 0 |  |
2027 | 0 |  |
2028 | 0 |  |
2029 | 0 |  |
Thereafter | 900,000 |  |
Principal | 900,000 |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (6,506) |  |
Total Consolidated | $ 893,494 |  |
1.875% Unsecured Senior Notes Payable |  |  |
Debt Instrument |  |  |
Stated interest rate (as a percent) | 1.875% |  |
Effective rate (as a percent) | 1.97% |  |
Maturity Date | Feb. 01, 2033 |  |
Future principal payments due on secured and unsecured debt |  |  |
2025 | $ 0 |  |
2026 | 0 |  |
2027 | 0 |  |
2028 | 0 |  |
2029 | 0 |  |
Thereafter | 1,000,000 |  |
Principal | 1,000,000 |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (6,675) |  |
Total Consolidated | $ 993,325 |  |
2.95% Unsecured Senior Notes Payable |  |  |
Debt Instrument |  |  |
Stated interest rate (as a percent) | 2.95% |  |
Effective rate (as a percent) | 3.07% |  |
Maturity Date | Mar. 15, 2034 |  |
Future principal payments due on secured and unsecured debt |  |  |
2025 | $ 0 |  |
2026 | 0 |  |
2027 | 0 |  |
2028 | 0 |  |
2029 | 0 |  |
Thereafter | 800,000 |  |
Principal | 800,000 |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (6,857) |  |
Total Consolidated | $ 793,143 |  |
4.75% Unsecured Senior Notes Payable |  |  |
Debt Instrument |  |  |
Stated interest rate (as a percent) | 4.75% |  |
Effective rate (as a percent) | 4.88% |  |
Maturity Date | Apr. 15, 2035 |  |
Future principal payments due on secured and unsecured debt |  |  |
2025 | $ 0 |  |
2026 | 0 |  |
2027 | 0 |  |
2028 | 0 |  |
2029 | 0 |  |
Thereafter | 500,000 |  |
Principal | 500,000 |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (4,730) |  |
Total Consolidated | $ 495,270 |  |
5.50% Unsecured Senior Notes Payable |  |  |
Debt Instrument |  |  |
Stated interest rate (as a percent) | 5.50% |  |
Effective rate (as a percent) | 5.66% |  |
Maturity Date | Oct. 01, 2035 |  |
Future principal payments due on secured and unsecured debt |  |  |
2025 | $ 0 |  |
2026 | 0 |  |
2027 | 0 |  |
2028 | 0 |  |
2029 | 0 |  |
Thereafter | 550,000 |  |
Principal | 550,000 |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (6,624) |  |
Total Consolidated | $ 543,376 |  |
5.25% Unsecured Senior Notes Payable |  |  |
Debt Instrument |  |  |
Stated interest rate (as a percent) | 5.25% |  | 5.50%
Effective rate (as a percent) | 5.38% |  |
Maturity Date | May 15, 2036 |  |
Future principal payments due on secured and unsecured debt |  |  |
2025 | $ 0 |  |
2026 | 0 |  |
2027 | 0 |  |
2028 | 0 |  |
2029 | 0 |  |
Thereafter | 400,000 |  |
Principal | 400,000 |  | $ 550,000
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (3,939) |  |
Total Consolidated | $ 396,061 |  |
4.85% Unsecured Senior Notes Payable |  |  |
Debt Instrument |  |  |
Stated interest rate (as a percent) | 4.85% |  |
Effective rate (as a percent) | 4.93% |  |
Maturity Date | Apr. 15, 2049 |  |
Future principal payments due on secured and unsecured debt |  |  |
2025 | $ 0 |  |
2026 | 0 |  |
2027 | 0 |  |
2028 | 0 |  |
2029 | 0 |  |
Thereafter | 300,000 |  |
Principal | 300,000 |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (2,814) |  |
Total Consolidated | $ 297,186 |  |
4.00% Unsecured Senior Notes Payable |  |  |
Debt Instrument |  |  |
Stated interest rate (as a percent) | 4.00% |  |
Effective rate (as a percent) | 3.91% |  |
Maturity Date | Feb. 01, 2050 |  |
Future principal payments due on secured and unsecured debt |  |  |
2025 | $ 0 |  |
2026 | 0 |  |
2027 | 0 |  |
2028 | 0 |  |
2029 | 0 |  |
Thereafter | 700,000 |  |
Principal | 700,000 |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | 9,916 |  |
Total Consolidated | $ 709,916 |  |
3.00% Unsecured Senior Notes Payable |  |  |
Debt Instrument |  |  |
Stated interest rate (as a percent) | 3.00% |  |
Effective rate (as a percent) | 3.08% |  |
Maturity Date | May 18, 2051 |  |
Future principal payments due on secured and unsecured debt |  |  |
2025 | $ 0 |  |
2026 | 0 |  |
2027 | 0 |  |
2028 | 0 |  |
2029 | 0 |  |
Thereafter | 850,000 |  |
Principal | 850,000 |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (11,034) |  |
Total Consolidated | $ 838,966 |  |
3.55% Unsecured Senior Notes Payable |  |  |
Debt Instrument |  |  |
Stated interest rate (as a percent) | 3.55% |  |
Effective rate (as a percent) | 3.63% |  |
Maturity Date | Mar. 15, 2052 |  |
Future principal payments due on secured and unsecured debt |  |  |
2025 | $ 0 |  |
2026 | 0 |  |
2027 | 0 |  |
2028 | 0 |  |
2029 | 0 |  |
Thereafter | 1,000,000 |  |
Principal | 1,000,000 |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (13,450) |  |
Total Consolidated | $ 986,550 |  |
5.15% Unsecured Senior Notes Payable |  |  |
Debt Instrument |  |  |
Stated interest rate (as a percent) | 5.15% |  |
Effective rate (as a percent) | 5.26% |  |
Maturity Date | Apr. 15, 2053 |  |
Future principal payments due on secured and unsecured debt |  |  |
2025 | $ 0 |  |
2026 | 0 |  |
2027 | 0 |  |
2028 | 0 |  |
2029 | 0 |  |
Thereafter | 500,000 |  |
Principal | 500,000 |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (7,482) |  |
Total Consolidated | $ 492,518 |  |
5.625% Unsecured Senior Notes Payable |  |  |
Debt Instrument |  |  |
Stated interest rate (as a percent) | 5.625% |  |
Effective rate (as a percent) | 5.71% |  |
Maturity Date | May 15, 2054 |  |
Future principal payments due on secured and unsecured debt |  |  |
2025 | $ 0 |  |
2026 | 0 |  |
2027 | 0 |  |
2028 | 0 |  |
2029 | 0 |  |
Thereafter | 600,000 |  |
Principal | 600,000 |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (6,580) |  |
Total Consolidated | 593,420 |  |
Commercial Paper |  |  |
Debt Instrument |  |  |
Commercial paper, maximum issuance | 2,500,000 |  |
Future principal payments due on secured and unsecured debt |  |  |
Principal | $ 1,100,000 |  |
Commercial Paper | Unsecured senior line of credit |  |  |
Debt Instrument |  |  |
Effective rate (as a percent) | 4.71% |  |
Maturity Date | Jan. 22, 2030 |  |
Future principal payments due on secured and unsecured debt |  |  |
2025 | $ 0 |  |
2026 | 0 |  |
2027 | 0 |  |
2028 | 0 |  |
2029 | 0 |  |
Thereafter | 1,100,000 |  |
Principal | 1,100,000 |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (2,007) |  |
Total Consolidated | $ 1,097,993 |  |

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