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v3.23.3

Detail of secured and unsecured debt (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2023 | Dec. 31, 2022 | Jun. 30, 2023 | Mar. 31, 2023 | Feb. 28, 2023
Debt Instrument |  |  |  |  |
Effective rate (as a percent) | 3.70% |  |  |  |
Future principal payments due on secured and unsecured debt |  |  |  |  |
2023 | $ 0 |  |  |  |
2024 | 32 |  |  |  |
2025 | 600,034 |  |  |  |
2026 | 759,331 |  |  |  |
2027 | 350,038 |  |  |  |
Thereafter | 9,575,479 |  |  |  |
Principal | 11,284,914 |  |  |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (82,079) |  |  |  |
Total Consolidated | $ 11,202,835 |  |  |  |
99 Coolidge Avenue | Alexandria |  |  |  |  |
Debt Instrument |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Parent | 75.00% |  |  |  |
Secured notes payable |  |  |  |  |
Debt Instrument |  |  |  |  |
Effective rate (as a percent) | 8.35% |  |  |  |
Future principal payments due on secured and unsecured debt |  |  |  |  |
2023 | $ 0 |  |  |  |
2024 | 32 |  |  |  |
2025 | 34 |  |  |  |
2026 | 109,331 |  |  |  |
2027 | 38 |  |  |  |
Thereafter | 479 |  |  |  |
Principal | 109,914 |  |  |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (804) |  |  |  |
Total Consolidated | $ 109,110 |  |  |  |
Secured notes payable maturing on 11/19/26 |  |  |  |  |
Debt Instrument |  |  |  |  |
Effective rate (as a percent) | 8.36% |  |  |  |
Maturity Date | Nov. 19, 2026 |  |  |  |
Future principal payments due on secured and unsecured debt |  |  |  |  |
2023 | $ 0 |  |  |  |
2024 | 0 |  |  |  |
2025 | 0 |  |  |  |
2026 | 109,295 |  |  |  |
2027 | 0 |  |  |  |
Thereafter | 0 |  |  |  |
Principal | 109,295 |  |  |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (804) |  |  |  |
Total Consolidated | 108,491 |  |  |  |
Secured notes payable maturing on 11/19/26 | 99 Coolidge Avenue |  |  |  |  |
Debt Instrument |  |  |  |  |
Debt instrument, borrowing capacity | $ 86,000 |  |  |  |
Secured Notes Payable Maturing on 7/1/36 |  |  |  |  |
Debt Instrument |  |  |  |  |
Stated interest rate (as a percent) | 6.50% |  |  |  |
Effective rate (as a percent) | 6.50% |  |  |  |
Maturity Date | Jul. 01, 2036 |  |  |  |
Future principal payments due on secured and unsecured debt |  |  |  |  |
2023 | $ 0 |  |  |  |
2024 | 32 |  |  |  |
2025 | 34 |  |  |  |
2026 | 36 |  |  |  |
2027 | 38 |  |  |  |
Thereafter | 479 |  |  |  |
Principal | 619 |  |  |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | 0 |  |  |  |
Total Consolidated | $ 619 |  |  |  |
Unsecured Debt |  |  |  |  |
Debt Instrument |  |  |  |  |
Effective rate (as a percent) | 3.65% |  |  |  |
Future principal payments due on secured and unsecured debt |  |  |  |  |
2023 | $ 0 |  |  |  |
2024 | 0 |  |  |  |
2025 | 600,000 |  |  |  |
2026 | 650,000 |  |  |  |
2027 | 350,000 |  |  |  |
Thereafter | 9,575,000 |  |  |  |
Principal | 11,175,000 |  |  |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (81,275) |  |  |  |
Total Consolidated | 11,093,725 |  |  |  |
Unsecured senior line of credit |  |  |  |  |
Debt Instrument |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | 5,000,000 |  |  | $ 4,000,000 |
Future principal payments due on secured and unsecured debt |  |  |  |  |
Total Consolidated | $ 0 |  |  |  |
3.45% Unsecured Senior Notes Payable |  |  |  |  |
Debt Instrument |  |  |  |  |
Stated interest rate (as a percent) | 3.45% |  |  |  |
Effective rate (as a percent) | 3.62% |  |  |  |
Maturity Date | Apr. 30, 2025 |  |  |  |
Future principal payments due on secured and unsecured debt |  |  |  |  |
2023 | $ 0 |  |  |  |
2024 | 0 |  |  |  |
2025 | 600,000 |  |  |  |
2026 | 0 |  |  |  |
2027 | 0 |  |  |  |
Thereafter | 0 |  |  |  |
Principal | 600,000 |  |  |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (1,402) |  |  |  |
Total Consolidated | $ 598,598 |  |  |  |
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 |  |  |  |  |
2023 | $ 0 |  |  |  |
2024 | 0 |  |  |  |
2025 | 0 |  |  |  |
2026 | 300,000 |  |  |  |
2027 | 0 |  |  |  |
Thereafter | 0 |  |  |  |
Principal | 300,000 |  |  |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (1,144) |  |  |  |
Total Consolidated | $ 298,856 |  |  |  |
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 |  |  |  |  |
2023 | $ 0 |  |  |  |
2024 | 0 |  |  |  |
2025 | 0 |  |  |  |
2026 | 350,000 |  |  |  |
2027 | 0 |  |  |  |
Thereafter | 0 |  |  |  |
Principal | 350,000 |  |  |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (1,265) |  |  |  |
Total Consolidated | $ 348,735 |  |  |  |
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 |  |  |  |  |
2023 | $ 0 |  |  |  |
2024 | 0 |  |  |  |
2025 | 0 |  |  |  |
2026 | 0 |  |  |  |
2027 | 350,000 |  |  |  |
Thereafter | 0 |  |  |  |
Principal | 350,000 |  |  |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (1,699) |  |  |  |
Total Consolidated | $ 348,301 |  |  |  |
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 |  |  |  |  |
2023 | $ 0 |  |  |  |
2024 | 0 |  |  |  |
2025 | 0 |  |  |  |
2026 | 0 |  |  |  |
2027 | 0 |  |  |  |
Thereafter | 425,000 |  |  |  |
Principal | 425,000 |  |  |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (1,838) |  |  |  |
Total Consolidated | $ 423,162 |  |  |  |
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 |  |  |  |  |
2023 | $ 0 |  |  |  |
2024 | 0 |  |  |  |
2025 | 0 |  |  |  |
2026 | 0 |  |  |  |
2027 | 0 |  |  |  |
Thereafter | 300,000 |  |  |  |
Principal | 300,000 |  |  |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (1,304) |  |  |  |
Total Consolidated | $ 298,696 |  |  |  |
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 |  |  |  |  |
2023 | $ 0 |  |  |  |
2024 | 0 |  |  |  |
2025 | 0 |  |  |  |
2026 | 0 |  |  |  |
2027 | 0 |  |  |  |
Thereafter | 400,000 |  |  |  |
Principal | 400,000 |  |  |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (2,574) |  |  |  |
Total Consolidated | $ 397,426 |  |  |  |
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 |  |  |  |  |
2023 | $ 0 |  |  |  |
2024 | 0 |  |  |  |
2025 | 0 |  |  |  |
2026 | 0 |  |  |  |
2027 | 0 |  |  |  |
Thereafter | 450,000 |  |  |  |
Principal | 450,000 |  |  |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (2,518) |  |  |  |
Total Consolidated | $ 447,482 |  |  |  |
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 |  |  |  |  |
2023 | $ 0 |  |  |  |
2024 | 0 |  |  |  |
2025 | 0 |  |  |  |
2026 | 0 |  |  |  |
2027 | 0 |  |  |  |
Thereafter | 700,000 |  |  |  |
Principal | 700,000 |  |  |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (5,706) |  |  |  |
Total Consolidated | $ 694,294 |  |  |  |
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 |  |  |  |  |
2023 | $ 0 |  |  |  |
2024 | 0 |  |  |  |
2025 | 0 |  |  |  |
2026 | 0 |  |  |  |
2027 | 0 |  |  |  |
Thereafter | 750,000 |  |  |  |
Principal | 750,000 |  |  |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (5,149) |  |  |  |
Total Consolidated | $ 744,851 |  |  |  |
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 |  |  |  |  |
2023 | $ 0 |  |  |  |
2024 | 0 |  |  |  |
2025 | 0 |  |  |  |
2026 | 0 |  |  |  |
2027 | 0 |  |  |  |
Thereafter | 900,000 |  |  |  |
Principal | 900,000 |  |  |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (8,116) |  |  |  |
Total Consolidated | $ 891,884 |  |  |  |
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 |  |  |  |  |
2023 | $ 0 |  |  |  |
2024 | 0 |  |  |  |
2025 | 0 |  |  |  |
2026 | 0 |  |  |  |
2027 | 0 |  |  |  |
Thereafter | 1,000,000 |  |  |  |
Principal | 1,000,000 |  |  |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (8,192) |  |  |  |
Total Consolidated | $ 991,808 |  |  |  |
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 |  |  |  |  |
2023 | $ 0 |  |  |  |
2024 | 0 |  |  |  |
2025 | 0 |  |  |  |
2026 | 0 |  |  |  |
2027 | 0 |  |  |  |
Thereafter | 800,000 |  |  |  |
Principal | 800,000 |  |  |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (8,177) |  |  |  |
Total Consolidated | $ 791,823 |  |  |  |
4.75% Unsecured Senior Notes Payable |  |  |  |  |
Debt Instrument |  |  |  |  |
Stated interest rate (as a percent) | 4.75% |  |  |  | 4.75%
Effective rate (as a percent) | 4.88% |  |  |  |
Maturity Date | Apr. 15, 2035 |  |  |  |
Future principal payments due on secured and unsecured debt |  |  |  |  |
2023 | $ 0 |  |  |  |
2024 | 0 |  |  |  |
2025 | 0 |  |  |  |
2026 | 0 |  |  |  |
2027 | 0 |  |  |  |
Thereafter | 500,000 |  |  |  |
Principal | 500,000 |  |  |  | $ 500,000
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (5,524) |  |  |  |
Total Consolidated | $ 494,476 |  |  |  |
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 |  |  |  |  |
2023 | $ 0 |  |  |  |
2024 | 0 |  |  |  |
2025 | 0 |  |  |  |
2026 | 0 |  |  |  |
2027 | 0 |  |  |  |
Thereafter | 300,000 |  |  |  |
Principal | 300,000 |  |  |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (3,016) |  |  |  |
Total Consolidated | $ 296,984 |  |  |  |
4.00% Unsecured Senior Notes Payables Due 2050 |  |  |  |  |
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 |  |  |  |  |
2023 | $ 0 |  |  |  |
2024 | 0 |  |  |  |
2025 | 0 |  |  |  |
2026 | 0 |  |  |  |
2027 | 0 |  |  |  |
Thereafter | 700,000 |  |  |  |
Principal | 700,000 |  |  |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | 10,140 |  |  |  |
Total Consolidated | $ 710,140 |  |  |  |
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 |  |  |  |  |
2023 | $ 0 |  |  |  |
2024 | 0 |  |  |  |
2025 | 0 |  |  |  |
2026 | 0 |  |  |  |
2027 | 0 |  |  |  |
Thereafter | 850,000 |  |  |  |
Principal | 850,000 |  |  |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (11,703) |  |  |  |
Total Consolidated | $ 838,297 |  |  |  |
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 |  |  |  |  |
2023 | $ 0 |  |  |  |
2024 | 0 |  |  |  |
2025 | 0 |  |  |  |
2026 | 0 |  |  |  |
2027 | 0 |  |  |  |
Thereafter | 1,000,000 |  |  |  |
Principal | 1,000,000 |  |  |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (14,221) |  |  |  |
Total Consolidated | $ 985,779 |  |  |  |
5.15% Unsecured Senior Notes Payable |  |  |  |  |
Debt Instrument |  |  |  |  |
Stated interest rate (as a percent) | 5.15% |  |  |  | 5.15%
Effective rate (as a percent) | 5.26% |  |  |  |
Maturity Date | Apr. 15, 2053 |  |  |  |
Future principal payments due on secured and unsecured debt |  |  |  |  |
2023 | $ 0 |  |  |  |
2024 | 0 |  |  |  |
2025 | 0 |  |  |  |
2026 | 0 |  |  |  |
2027 | 0 |  |  |  |
Thereafter | 500,000 |  |  |  |
Principal | 500,000 |  |  |  | $ 500,000
Unamortized (Deferred Financing Cost), (Discount)/ Premium | (7,867) |  |  |  |
Total Consolidated | 492,133 |  |  |  |
Commercial Paper |  |  |  |  |
Debt Instrument |  |  |  |  |
Commercial paper, maximum issuance | 2,500,000 |  | $ 2,000,000 |  |
Future principal payments due on secured and unsecured debt |  |  |  |  |
Principal | $ 0 |  |  |  |
Commercial Paper | Unsecured senior line of credit |  |  |  |  |
Debt Instrument |  |  |  |  |
Maturity Date | Jan. 22, 2028 |  |  |  |
Future principal payments due on secured and unsecured debt |  |  |  |  |
2024 | $ 0 |  |  |  |
2025 | 0 |  |  |  |
2026 | 0 |  |  |  |
2027 | 0 |  |  |  |
Thereafter | 0 |  |  |  |
Principal | 0 |  |  |  |
Unamortized (Deferred Financing Cost), (Discount)/ Premium | 0 |  |  |  |
Total Consolidated | $ 0 |  |  |  |
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Secured notes payable maturing on 11/19/26 |  |  |  |  |
Debt Instrument |  |  |  |  |
Applicable margin (as a percent) | 2.70% |  |  |  |
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Unsecured senior line of credit |  |  |  |  |
Debt Instrument |  |  |  |  |
Applicable margin (as a percent) | 0.835% | 0.875% |  |  |

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