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Subsequent events (Notes)	12 Months Ended
	Dec. 31, 2024
Subsequent Events [Abstract]
Subsequent Events	Ground lease payment in January 2025 In January 2025, pursuant to an amendment executed in July 2024 to our existing ground lease agreement at the Alexandria Technology Square® Megacampus, we made the second and final installment payment aggregating $135.0 million related to our rent obligation for the extended lease term. For additional information, refer to Note 5 – “Leases” to our consolidated financial statements. Common stock repurchase program From January 1, 2025 through January 27, 2025, we repurchased 1.5 million shares of common stock under this repurchase program at an average price per share of $97.26. As of the date of this report, the approximate value of shares authorized and remaining under this program was $299.9 million.

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- Definition

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/855/tableOfContent

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483399/855-10-50-2

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