Investments in Real Estate - Acquisitions Footnotes (Details) $ in Thousands, £ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) property	Dec. 31, 2022 GBP (£) property	Dec. 31, 2021 USD ($) property	Dec. 31, 2021 GBP (£) property
Real Estate [Line Items]
Settlement credits as reimbursement for acquired rent free period	$ 10,500		$ 8,500
Value of properties acquired during the period	$ 8,995,300		$ 6,410,800
Rental revenue generated from acquisitions from investment grade tenants (as a percent)	23.00%	23.00%	40.00%	40.00%
Properties under development
Real Estate [Line Items]
Number of properties, under development | property	217	217	68	68
Value of properties acquired during the period	$ 807,600		$ 243,300
Retail
Real Estate [Line Items]
Property type acquired based on rental revenue (as a percent)	71.40%	71.40%	83.60%	83.60%
Industrial
Real Estate [Line Items]
Property type acquired based on rental revenue (as a percent)	6.50%	6.50%	16.40%	16.40%
Other Property
Real Estate [Line Items]
Property type acquired based on rental revenue (as a percent)	3.00%	3.00%
Gaming
Real Estate [Line Items]
Property type acquired based on rental revenue (as a percent)	19.10%	19.10%
Agricultural
Real Estate [Line Items]
Property type acquired based on rental revenue (as a percent)	2.70%	2.70%
Office Building
Real Estate [Line Items]
Property type acquired based on rental revenue (as a percent)	0.30%	0.30%
U.K. | Properties under development
Real Estate [Line Items]
Number of properties, under development | property	5	5	1	1
Value of properties acquired during the period | £		£ 40.9		£ 7.0