Schedule III - Real Estate and Accumulated Depreciation (Details Textual) $ in Billions	12 Months Ended
	Dec. 31, 2019 USD ($)
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Federal Income Tax Basis	$ 10
Buildings and Building Improvements Held For Investment [Member] | Minimum [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Life Used for Depreciation	5 years
Buildings and Building Improvements Held For Investment [Member] | Maximum [Member]
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Life Used for Depreciation	50 years