Investments in real estate - Assets held for sale (Details) $ in Thousands, ft² in Millions	Dec. 31, 2025 USD ($) ft² property	Dec. 31, 2024 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Investments in real estate	$ 28,689,996	$ 32,110,039
Other assets	1,661,772	1,661,306
Total assets	594,538	382,135
Total liabilities	(12,235)	(13,462)
Total accumulated other comprehensive income	(566)	2,584
Net assets classified as held for sale	$ 581,737	371,257
Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of real estate properties | property	20
Other assets	$ 37,859	$ 9,488
Operating property | Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Area of Real Estate Property | ft²	1.6
Land | Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Area of Real Estate Property | ft²	1.9