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Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
Income Taxes (Narrative) (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating Loss Carryforwards [Line Items]
REIT distribution requirement (as a percent)	90.00%	90.00%	90.00%
Deferred Tax Assets, Valuation Allowance	$ (198,450,000)	$ (127,279,000)	$ (40,114,000)
Period in which assets disposition subject to built in gains tax	5 years
Difference in bases for entity not subject to income taxes	$ 3,300,000,000	3,600,000,000
Unrecognized Tax Benefits	6,082,000	6,057,000	12,127,000
Unrecognized tax benefits that, if recognized, would reduce annual effective tax rate	5,300,000	5,300,000
Unrecognized tax benefits, income tax penalties and interest accrued	0
Increase (decrease) in net deferred tax liability	4,500,000
Internal Restructuring, Taxable REIT Subsidiaries
Operating Loss Carryforwards [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	3,500,000
Increase (decrease) in net deferred tax liability	3,500,000
Deferred Tax Liabilities, Revaluation
Operating Loss Carryforwards [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	3,300,000
Increase (decrease) in net deferred tax liability	3,300,000
Release Of Residual Tax Effect, Marketable Debt Securities
Operating Loss Carryforwards [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	3,700,000
Increase (decrease) in net deferred tax liability	3,700,000
Net Operating Losses More Likely Than Not To Be Realized [Member]
Operating Loss Carryforwards [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount		95,900,000
Interest Expense Limitation due to Tax Cuts and Jobs Act of 2017
Operating Loss Carryforwards [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount			57,700,000
Taxable Reit Subsidiaries
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, valuation allowance	140,600,000	83,200,000	21,200,000
REIT
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, valuation allowance	1,100,000,000	$ 896,400,000	$ 858,600,000
Tax credit carryforward	$ 10,800,000