Detail of secured and unsecured debt (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2025	Feb. 28, 2025
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	11,550,000
Principal	13,675,000
Unamortized (Deferred Financing Cost), (Discount)/ Premium	(81,459)
Total Consolidated	$ 13,593,541
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	11,550,000
Principal	13,675,000
Unamortized (Deferred Financing Cost), (Discount)/ Premium	(81,459)
Total Consolidated	13,593,541
Unsecured senior line of credit
Debt Instrument
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	(160)
Total Consolidated	$ 299,840
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	(285)
Total Consolidated	$ 349,715
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	(684)
Total Consolidated	$ 349,316
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	(994)
Total Consolidated	$ 424,006
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	(860)
Total Consolidated	$ 299,140
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	(1,757)
Total Consolidated	$ 398,243
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	(1,779)
Total Consolidated	$ 448,221
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	(4,143)
Total Consolidated	$ 695,857
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	(3,866)
Total Consolidated	$ 746,134
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	(6,275)
Total Consolidated	$ 893,725
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	(6,458)
Total Consolidated	$ 993,542
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	(6,668)
Total Consolidated	$ 793,332
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	(4,615)
Total Consolidated	$ 495,385
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	(6,470)
Total Consolidated	$ 543,530
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	(3,853)
Total Consolidated	$ 396,147
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	(2,785)
Total Consolidated	$ 297,215
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	9,880
Total Consolidated	$ 709,880
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	(10,938)
Total Consolidated	$ 839,062
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	(13,339)
Total Consolidated	$ 986,661
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	(7,427)
Total Consolidated	$ 492,573
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	(6,525)
Total Consolidated	593,475
Commercial Paper
Debt Instrument
Commercial paper, maximum issuance	2,500,000
Future principal payments due on secured and unsecured debt
Principal	$ 1,500,000
Commercial Paper \| Unsecured senior line of credit
Debt Instrument
Effective rate (as a percent)	4.52%
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	1,550,000
Principal	1,550,000
Unamortized (Deferred Financing Cost), (Discount)/ Premium	(1,458)
Total Consolidated	$ 1,548,542

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