Management Agreements and Leases (Details)	12 Months Ended
	Dec. 31, 2019 tenant retail_property hotel property agreement	Sep. 20, 2019 tenant
Management Agreements and Leases [Line Items]
Number of properties | retail_property	816
Number of operating agreements | agreement	6
Number of tenants | tenant	194	279
Hotel operating revenues
Management Agreements and Leases [Line Items]
Number of properties	329
Number of operating agreements | agreement	8
Number of properties leased to taxable REIT subsidiaries	327
Number of properties leased to third parties	2
Hotel operating revenues | Minimum
Management Agreements and Leases [Line Items]
Number of real estate properties leased or managed | property	1
Hotel management agreements and leases, renewal period	15 years
Hotel operating revenues | Maximum
Management Agreements and Leases [Line Items]
Number of real estate properties leased or managed	103
Hotel management agreements and leases, renewal period	60 years