Equity Method Investments - Equity Method Investments Excluding the Managed Programs (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Investments in Programs
Equity method investments in real estate	$ 344,360	$ 356,637
Real Estate
Investments in Programs
Equity method investments in real estate	280,674	291,903
Real Estate | Third Party | Affiliated Entity | Las Vegas Retail Complex
Investments in Programs
Equity method investments in real estate	$ 141,341	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	$ 66,552	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	$ 33,416	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	$ 24,725	24,435
Real Estate | WLT (reimbursed transition services) | Affiliated Entity | WLT (reimbursed transition services)
Investments in Programs
Equity method investments in real estate	$ 0	33,392
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	$ 6,411	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	$ 3,977	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	$ 2,146	2,936
Real Estate | CPA:18 – Global | Affiliated Entity | Bank Pekao S.A.
Investments in Programs
Equity method investment, ownership percentage	50.00%
Equity method investments in real estate	$ 2,106	$ 4,460