v3.26.3
Leases - Lessee (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2026
USD ($)
property
Sep. 30, 2025
USD ($)
Sep. 30, 2026
USD ($)
property
Sep. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Lessee, Lease, Description [Line Items]          
Operating lease liability $ 354,028   $ 354,028   $ 360,543
Operating lease right-of-use assets $ 686,159   $ 686,159   697,865
Operating lease discount rate 4.70%   4.70%    
Number of properties subject to ground leases | property 31   31    
Percentage of properties subject to ground leases 9.00%   9.00%    
Operating lease costs - cash rents     $ 18,000 $ 165,200  
Remaining lease term for operating lease obligations     10 years    
Operating Lease Liabilities, Payments Due          
2026 $ 4,989   $ 4,989    
2027 21,003   21,003    
2028 21,318   21,318    
2029 20,825   20,825    
2030 20,743   20,743    
Thereafter 665,496   665,496    
Total future payments under our operating leases in which we are the lessee 754,374   754,374    
Effect of discounting (400,346)   (400,346)    
Operating lease liability 354,028   354,028   $ 360,543
Leasee operating costs          
Gross operating lease costs 8,006 $ 11,525 24,426 36,743  
Capitalized lease costs (1,027) (880) (2,872) (2,293)  
Expenses for operating leases in which we are the lessee $ 6,979 $ 10,645 $ 21,554 34,450  
Alexandria Technology Square          
Lessee, Lease, Description [Line Items]          
Operating lease costs - cash rents       $ 135,000  
Minimum          
Lessee, Lease, Description [Line Items]          
Remaining lease term for ground lease obligation     28 years    
Maximum          
Lessee, Lease, Description [Line Items]          
Remaining lease term for ground lease obligation     97 years    
Ground and operating leases          
Lessee, Lease, Description [Line Items]          
Weighted average remaining lease term 60 years   60 years