Leases - Lessee (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2025 USD ($) property	Mar. 31, 2024 USD ($)	Dec. 31, 2024 USD ($)
Lessee, Lease, Description [Line Items]
Operating lease liability	$ 371,412		$ 507,127
Operating lease right-of-use assets	$ 728,873		764,472
Operating lease discount rate	4.70%
Number of properties subject to ground leases | property	32
Percentage of properties subject to ground leases	8.00%
Operating lease costs - cash rents	$ 144,600	$ 7,300
Remaining lease term for operating lease obligations	11 years
Impairment of real estate	$ 32,154	0
Operating Lease Liabilities, Payments Due
2025	17,434
2026	23,081
2027	22,162
2028	21,830
2029	21,338
Thereafter	703,148
Total future payments under our operating leases in which we are the lessee	808,993
Effect of discounting	(437,581)
Operating lease liability	371,412		507,127
Leasee operating costs
Gross operating lease costs	12,359	9,211
Capitalized lease costs	(693)	(528)
Expenses for operating leases in which we are the lessee	11,666	$ 8,683
San Francisco Bay Area
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets			$ 32,400
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	29 years
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term for ground lease obligation	82 years
Ground and operating leases
Lessee, Lease, Description [Line Items]
Weighted average remaining lease term	54 years
Operating Property with Ground Lease
Lessee, Lease, Description [Line Items]
Number of properties subject to ground leases | property	1
Net book value for the exclusion of one ground lease related to one operating property	$ 5,500