Stockholders' Equity - Additional Information (Detail) - USD ($)									3 Months Ended				6 Months Ended		12 Months Ended
	Aug. 14, 2020	Jun. 30, 2020	Mar. 20, 2020	Dec. 31, 2019	Sep. 27, 2019	May 18, 2017	Oct. 17, 2016	Feb. 02, 2016	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Stockholders Equity [Line Items]
Common stock									$ 7,116,579	$ 11,039,819	$ 12,364,156	$ 13,604,281
Common stock, shares authorized		400,000,000							400,000,000				400,000,000
Preferred stock, authorized shares		50,000,000		50,000,000					50,000,000				50,000,000		50,000,000
Preferred stock, par value		$ 0.01		$ 0.01					$ 0.01				$ 0.01		$ 0.01
Preferred stock, issued		0		0					0				0		0
Preferred stock, outstanding		0		0					0				0		0
Common stock, shares		5,994,996		5,332,169
Net proceeds from sale of common stock		$ 147,761,793		$ 131,583,672									$ 17,134,523	$ 24,983,113
Distributions declared		14,412,838		10,144,642
Distributions payable		733,307		668,092					$ 733,307				733,307		$ 668,092
Distributions reinvested pursuant to DRP		4,783,598		3,285,934					4,783,598				4,783,598		3,285,934
Stock repurchase									$ 2,022,211	620,659	542,881		$ 2,642,870		$ 48,451
Stock repurchased, shares									86,955				112,239		1,197,706
Investment in Operating Partnership by subsidiary of Sponsor, Rodin Global Property Trust OP Holdings, LLC (the "Special Unit Holder")													$ 1,000
Non-controlling interests in subsidiaries		$ 2,978,171		$ 3,038,918					$ 2,978,171				$ 2,978,171		$ 3,038,918
SF Property SPE [Member]
Stockholders Equity [Line Items]
Non-controlling interest, ownership percentage by parent		75.00%							75.00%				75.00%
SF Property SPE [Member] | GSR Battery, LLC [Member]
Stockholders Equity [Line Items]
Non-controlling interest, ownership percentage by non-controlling interest owner		25.00%							25.00%				25.00%
GSR Battery, LLC [Member]
Stockholders Equity [Line Items]
Non-controlling interests in subsidiaries		$ 2,977,171							$ 2,977,171				$ 2,977,171
CFI and Company Reimbursement Agreement [Member]
Stockholders Equity [Line Items]
Cumulative, non-compounded annual pre-tax return		6.00%							6.00%				6.00%
Class I [Member]
Stockholders Equity [Line Items]
Common stock						$ 2,000,000			$ 892	$ 2,151	$ 1,115	$ 1,483
Common stock, shares authorized		40,000,000		40,000,000					40,000,000				40,000,000		40,000,000
Common stock, shares		1,151,593		853,734					89,113	215,102	111,436	148,278
Stock repurchase									$ 159
Stock repurchased, shares									15,887
Class I [Member] | Dividend Declared through August 14, 2020 [Member] | Scenario, Forecast [Member]
Stockholders Equity [Line Items]
Distributions declared	$ 0.004253787
Class I [Member] | CFI and Company Reimbursement Agreement [Member]
Stockholders Equity [Line Items]
Common stock													$ 1,132,280
Percentage of selling commissions and all of dealer manager fees on gross offering proceeds to be paid by CFI													1.50%
Purchase of shares to satisfy minimum offering requirement													$ 2,000,000
Class A [Member]
Stockholders Equity [Line Items]
Common stock								$ 200,001	$ 1,447	$ 1,512	$ 2,745	$ 2,636
Common stock, shares authorized		160,000,000		160,000,000					160,000,000				160,000,000		160,000,000
Common stock, shares		3,402,643		3,150,616				8,180	144,689	150,441	274,447	263,629
Stock repurchase									$ 625	$ 173	$ 188
Stock repurchased, shares									62,524	17,256	18,774
Class A [Member] | Dividend Declared through August 14, 2020 [Member] | Scenario, Forecast [Member]
Stockholders Equity [Line Items]
Distributions declared	0.004253787
Class T [Member]
Stockholders Equity [Line Items]
Common stock									$ 492	$ 662	$ 884	$ 1,137
Common stock, shares authorized		200,000,000		200,000,000					200,000,000				200,000,000		200,000,000
Common stock, shares		1,440,760		1,327,819					49,180	66,220	88,364	113,727
Stock repurchase									$ 85	$ 80	$ 30
Stock repurchased, shares									8,544	8,028	3,037
Class T [Member] | Dividend Declared through August 14, 2020 [Member] | Scenario, Forecast [Member]
Stockholders Equity [Line Items]
Distributions declared	$ 0.004253787
Primary Offering [Member] | Class I [Member]
Stockholders Equity [Line Items]
Common stock							$ 2,000,000
DRP [Member]
Stockholders Equity [Line Items]
Common stock, shares authorized amount			$ 250,000,000
Maximum [Member]
Stockholders Equity [Line Items]
Percentage of repurchase of shares aggregate value on combined net asset value of all shares during previous month					2.00%
Percentage of repurchase of shares aggregate value on combined net asset value of all shares during previous year					10.00%
Maximum [Member] | Class I [Member] | CFI and Company Reimbursement Agreement [Member]
Stockholders Equity [Line Items]
Purchase of shares by CFI													$ 5,000,000
Maximum [Member] | Common class A and class T [Member] | CFI and Company Reimbursement Agreement [Member]
Stockholders Equity [Line Items]
Percentage of selling commissions and all of dealer manager fees on gross offering proceeds to be paid by CFI													4.00%
Maximum [Member] | Offering [Member]
Stockholders Equity [Line Items]
Common stock, shares authorized amount							1,250,000,000	$ 1,250,000,000
Maximum [Member] | Primary Offering [Member]
Stockholders Equity [Line Items]
Common stock, shares authorized amount							1,000,000,000	1,000,000,000
Maximum [Member] | Primary Offering [Member] | Class I [Member] | CFI and Company Reimbursement Agreement [Member]
Stockholders Equity [Line Items]
Percentage of selling commissions and all of dealer manager fees on gross offering proceeds to be paid by CFI													1.50%
Maximum [Member] | Primary Offering [Member] | Common class A and class T [Member] | CFI and Company Reimbursement Agreement [Member]
Stockholders Equity [Line Items]
Percentage of selling commissions and all of dealer manager fees on gross offering proceeds to be paid by CFI													4.00%
Maximum [Member] | Follow-on Offering [Member]
Stockholders Equity [Line Items]
Common stock, shares authorized amount			$ 1,000,000,000
Maximum [Member] | DRP [Member]
Stockholders Equity [Line Items]
Common stock, shares authorized amount							$ 250,000,000	$ 250,000,000