Investments in real estate - Acquired leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Acquired below-market leases
Real Estate Properties [Line Items]
Amortization of intangible assets	$ 41,300	$ 89,400	$ 96,900
Weighted average amortization period	7 years 10 months 24 days
Values of acquired leases
Finite-Lived Intangible Assets, Gross	$ 715,898	652,757
Accumulated amortization	(582,865)	(472,350)
Value of intangible assets, net	133,033	180,407
Estimated annual amortization
2026	24,126
2027	22,721
2028	10,962
2029	8,634
2030	8,164
Thereafter	58,426
Acquired-in-Place Leases
Real Estate Properties [Line Items]
Amortization of intangible assets	$ 83,000	108,700	$ 160,600
Weighted average amortization period	7 years 9 months 18 days
Values of acquired leases
Finite-Lived Intangible Assets, Gross	$ 943,097	1,032,744
Accumulated amortization	(739,089)	(727,600)
Value of intangible assets, net	204,008	$ 305,144
Estimated annual amortization
2026	43,811
2027	33,492
2028	23,946
2029	19,060
2030	16,736
Thereafter	$ 66,963