Schedule III - Real Estate Investments - Impairment and Amount that Tax Basis of Net Real Estate Assets Less Than the Reported Amounts (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Schedule III - Real Estate Investments [Abstract]
Reduction of costs capitalized	$ 24.9
Reduction of accumulated depreciation	13.5
Tax Basis of Investments, Cost for Income Tax Purposes	$ 3,410.0