Equity Method Investments - Equity Method Investments Excluding the Managed Programs (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Investments in Programs
Equity method investments in real estate	$ 339,372	$ 356,637
Real Estate
Investments in Programs
Equity method investments in real estate	271,736	291,903
Real Estate | Third Party | Affiliated Entity | Las Vegas Retail Complex
Investments in Programs
Equity method investments in real estate	$ 122,067	104,114
Real Estate | Third Party | Affiliated Entity | Johnson Self Storage
Investments in Programs
Equity method investment, ownership percentage	90.00%
Equity method investments in real estate	$ 67,009	67,573
Real Estate | Third Party | Affiliated Entity | Kesko Senukai
Investments in Programs
Equity method investment, ownership percentage	70.00%
Equity method investments in real estate	$ 42,873	41,955
Real Estate | Third Party | Affiliated Entity | Harmon Retail Corner
Investments in Programs
Equity method investment, ownership percentage	15.00%
Equity method investments in real estate	$ 24,423	24,435
Real Estate | WLT (reimbursed transition services) | WLT (reimbursed transition services)
Investments in Programs
Equity method investments in real estate	$ 0	33,392
Real Estate | CPA:18 – Global | Bank Pekao S.A.
Investments in Programs
Equity method investment, ownership percentage	50.00%
Equity method investments in real estate	$ 0	4,460
Real Estate | CPA:18 – Global | Affiliated Entity | State Farm Mutual Automobile Insurance Co.
Investments in Programs
Equity method investment, ownership percentage	50.00%
Equity method investments in real estate	$ 6,743	7,129
Real Estate | CPA:18 – Global | Affiliated Entity | Apply Sorco AS
Investments in Programs
Equity method investment, ownership percentage	49.00%
Equity method investments in real estate	$ 6,018	5,909
Real Estate | CPA:18 – Global | Affiliated Entity | Fortenova Grupa d.d.
Investments in Programs
Equity method investment, ownership percentage	20.00%
Equity method investments in real estate	$ 2,603	$ 2,936