Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021 USD ($) Derivative	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) Derivative	Sep. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)	Sep. 30, 2021 DKK (kr) Derivative	Sep. 30, 2021 GBP (£) Derivative	Sep. 30, 2021 EUR (€) Derivative	Dec. 31, 2020 USD ($)
Significant Accounting Policies [Line Items]
Foreign currency translation and transaction losses	$ (11,400)		$ (16,800)
Secured financings on investments in real estate debt of fair value below outstanding principal balance	26,800		26,800
Deferred income	7,323		7,323						$ 11,111
Organization and offering expenses	$ 351,839		$ 351,839						96,371
Minimum REIT distribution percentage	90.00%		90.00%			90.00%	90.00%	90.00%
Income tax (benefit) provision	$ 100	$ 30	$ 200	$ (40)
Deferred tax liability	9,800		9,800						9,800
Hospitality Investments
Significant Accounting Policies [Line Items]
Deferred tax liability	1,200		1,200						1,200
Triple Net Sale and Leaseback Property
Significant Accounting Policies [Line Items]
Deferred tax liability	$ 8,600		$ 8,600						8,600
Class S Shares (Member)
Significant Accounting Policies [Line Items]
Annual stockholder servicing fee percentage	0.85%		0.85%			0.85%	0.85%	0.85%
Class S Shares (Member) | Maximum
Significant Accounting Policies [Line Items]
Upfront selling commissions and dealer manager fee percentage	3.50%		3.50%			3.50%	3.50%	3.50%
Class T Shares (Member)
Significant Accounting Policies [Line Items]
Annual stockholder servicing fee percentage	0.85%		0.85%			0.85%	0.85%	0.85%
Class T Shares (Member) | Maximum
Significant Accounting Policies [Line Items]
Upfront selling commissions and dealer manager fee percentage	3.50%		3.50%			3.50%	3.50%	3.50%
Class D Shares (Member)
Significant Accounting Policies [Line Items]
Annual stockholder servicing fee percentage	0.25%		0.25%			0.25%	0.25%	0.25%
Class D Shares (Member) | Maximum
Significant Accounting Policies [Line Items]
Upfront selling commissions and dealer manager fee percentage	1.50%		1.50%			1.50%	1.50%	1.50%
Advanced Organization And Offering Costs
Significant Accounting Policies [Line Items]
Organization and offering expenses	$ 4,735		$ 4,735						5,830
Advisor
Significant Accounting Policies [Line Items]
Period to reimburse the advisor for all organization and offering expenses			60 months		60 months
Advisor | Class T Shares (Member)
Significant Accounting Policies [Line Items]
Advisor Percentage of stockholder servicing fee on NAV per annum			0.65%
Advisor | Advanced Organization And Offering Costs
Significant Accounting Policies [Line Items]
Organization and offering expenses					$ 7,300
Advisor | Advanced Organization And Offering Costs | Primary Offering
Significant Accounting Policies [Line Items]
Organization and offering expenses	$ 7,300		$ 7,300
Dealer Manager | Class S Shares (Member) | Maximum
Significant Accounting Policies [Line Items]
Upfront selling commissions percentage	3.50%		3.50%			3.50%	3.50%	3.50%
Dealer Manager | Class T Shares (Member)
Significant Accounting Policies [Line Items]
Upfront dealer manager fee percentage	0.50%		0.50%			0.50%	0.50%	0.50%
Dealer stockholder servicing fee percentage			0.20%
Annual stockholder servicing fee percentage	0.85%		0.85%			0.85%	0.85%	0.85%
Dealer Manager | Class T Shares (Member) | Maximum
Significant Accounting Policies [Line Items]
Upfront selling commissions percentage	3.00%		3.00%			3.00%	3.00%	3.00%
Upfront selling commissions and dealer manager fee percentage	3.50%		3.50%			3.50%	3.50%	3.50%
Dealer Manager | Class D Shares (Member)
Significant Accounting Policies [Line Items]
Upfront dealer manager fee percentage	0.00%		0.00%			0.00%	0.00%	0.00%
Annual stockholder servicing fee percentage	0.25%		0.25%			0.25%	0.25%	0.25%
Dealer Manager | Class D Shares (Member) | Maximum
Significant Accounting Policies [Line Items]
Upfront selling commissions percentage	1.50%		1.50%			1.50%	1.50%	1.50%
Dealer Manager | Class S Share And T Shares [Member]
Significant Accounting Policies [Line Items]
Annual stockholder servicing fee percentage	0.85%		0.85%			0.85%	0.85%	0.85%
Dealer Manager | Class I Shares (Member)
Significant Accounting Policies [Line Items]
Annual stockholder servicing fee percentage	0.00%		0.00%			0.00%	0.00%	0.00%
Dealer Manager | Common Stock Class T, Class S and Class D
Significant Accounting Policies [Line Items]
Annual stockholder servicing fee percentage of gross proceeds limit	8.75%		8.75%			8.75%	8.75%	8.75%
Accounts Payable, Accrued Expenses and Other Liabilities
Significant Accounting Policies [Line Items]
Deferred income	$ 5,200		$ 5,200						5,800
Due to Affiliates | Common Stock Class T, Class S and Class D
Significant Accounting Policies [Line Items]
Stockholder servicing fees accrued	$ 227,400		$ 227,400						$ 73,200
Currency Swap
Significant Accounting Policies [Line Items]
Derivative, number of instruments held						1	4	2
Derivative, aggregate notional value						kr 165,000,000	£ 268,000,000	€ 85,000,000
Interest Rate Cap
Significant Accounting Policies [Line Items]
Derivative, number of instruments held | Derivative	15		15			15	15	15
Derivative, aggregate notional value	$ 3,000,000		$ 3,000,000
Interest Rate Cap | Danish Investment
Significant Accounting Policies [Line Items]
Derivative, number of instruments held | kr						1
Derivative, aggregate notional value | kr						kr 301,500,000
Interest Rate Swap
Significant Accounting Policies [Line Items]
Derivative, number of instruments held | Derivative	2		2			2	2	2
Derivative, aggregate notional value	$ 252,200		$ 252,200
Other Income (Expense)
Significant Accounting Policies [Line Items]
Unrealized losses on investments	(1,300)
Other Revenue
Significant Accounting Policies [Line Items]
Other income	$ 200	$ 200	$ 600	$ 600