Stockholders' Equity - Additional Information (Detail) - USD ($)										3 Months Ended						6 Months Ended	9 Months Ended		13 Months Ended
	Sep. 30, 2021	Dec. 31, 2020	Aug. 31, 2020	Aug. 10, 2020	Jul. 31, 2020	Jul. 27, 2020	May 18, 2017	Oct. 17, 2016	Feb. 02, 2016	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021
Stockholders Equity [Line Items]
Common stock										$ 24,712,255	$ 17,706,780	$ 10,991,523	$ 4,621,878	$ 7,116,579	$ 11,039,819
Common stock, shares authorized	400,000,000									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	8,445,731	6,387,089
Net proceeds from sale of common stock	$ 205,819,966	$ 156,649,126															$ 52,141,899	$ 21,293,396
Distributions declared																			$ 0.004234973
Distributions declared on an annual basis																			$ 1.55
Distributions declared	27,332,363	19,102,079
Distributions payable	1,037,708	809,365								$ 1,037,708							1,037,708		$ 1,037,708
Distributions reinvested pursuant to DRP	9,214,849	6,464,069								9,214,849							9,214,849		9,214,849
Stock repurchase										$ 1,283,665	2,898,604	1,884,438	$ 884,934	2,022,211	620,659		$ 6,066,706	$ 3,527,804
Stock repurchased, shares										52,336			37,400				250,775	149,639
Investment in Operating Partnership by subsidiary of Sponsor, Rodin Global Property Trust OP Holdings, LLC (the "Special Unit Holder")																$ 1,000	$ 1,000
Performance participation allocation																	3,025,282
Non-controlling interests in subsidiaries	$ 72,870,083	$ 2,150,741								$ 72,870,083							$ 72,870,083		$ 72,870,083
SF Property SPE [Member]
Stockholders Equity [Line Items]
Non-controlling interest, ownership percentage by parent	75.00%									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%		25.00%
GSR Battery, LLC [Member]
Stockholders Equity [Line Items]
Non-controlling interests in subsidiaries	$ 2,871,610									$ 2,871,610							$ 2,871,610		$ 2,871,610
Keller Property SPE [Member]
Stockholders Equity [Line Items]
Non-controlling interest, ownership percentage by parent	77.85%									77.85%							77.85%		77.85%
Keller Property SPE [Member] | Other Parties [Member]
Stockholders Equity [Line Items]
Non-controlling interest, ownership percentage by non-controlling interest owner	22.15%									22.15%							22.15%		22.15%
Non-controlling interests in subsidiaries	$ 5,711,066									$ 5,711,066							$ 5,711,066		$ 5,711,066
Summerfield DST [Member]
Stockholders Equity [Line Items]
Non-controlling interest, ownership percentage by parent	25.00%									25.00%							25.00%		25.00%
Summerfield DST [Member] | Other Parties [Member]
Stockholders Equity [Line Items]
Non-controlling interest, ownership percentage by non-controlling interest owner	75.00%									75.00%							75.00%		75.00%
Non-controlling interests in subsidiaries	$ 31,810,408									$ 31,810,408							$ 31,810,408		$ 31,810,408
Summerfield MT Joint Venture [Member]
Stockholders Equity [Line Items]
Non-controlling interest, ownership percentage by parent	90.00%									90.00%							90.00%		90.00%
Summerfield MT Joint Venture [Member] | Hamilton Zanze [Member]
Stockholders Equity [Line Items]
Non-controlling interest, ownership percentage by non-controlling interest owner	10.00%									10.00%							10.00%		10.00%
Hamilton Zanze [Member]
Stockholders Equity [Line Items]
Non-controlling interests in subsidiaries	$ 163,669									$ 163,669							$ 163,669		$ 163,669
Valencia DST [Member]
Stockholders Equity [Line Items]
Non-controlling interest, ownership percentage by parent	9.91%									9.91%							9.91%		9.91%
Valencia DST [Member] | Other Parties [Member]
Stockholders Equity [Line Items]
Non-controlling interest, ownership percentage by non-controlling interest owner	90.09%									90.09%							90.09%		90.09%
Non-controlling interests in subsidiaries	$ 35,337,612									$ 35,337,612							$ 35,337,612		$ 35,337,612
Second Amended and Restated Share Repurchase Program [Member]
Stockholders Equity [Line Items]
Percentage of common stock aggregate net asset value during previous month			2.00%
Percentage of redemption price rate						95.00%
Percentage of waive holding discount with repurchase shares acquire						5.00%
Percentage of waive holding discount in case of death or disability of stockholder						5.00%
Dividend Declared through August 31, 2020 [Member]
Stockholders Equity [Line Items]
Distributions declared			$ 0.004253787
CFI and Company Reimbursement Agreement [Member]
Stockholders Equity [Line Items]
Cumulative, non-compounded annual pre-tax return	6.00%									6.00%							6.00%		6.00%
Class I [Member]
Stockholders Equity [Line Items]
Common stock							$ 2,000,000.0			$ 7,759	$ 5,995	$ 2,818	$ 137
Common stock, shares authorized	200,000,000	200,000,000								200,000,000							200,000,000		200,000,000
Common stock, shares	1,824,875	160,013								775,827	599,495	281,800	13,736
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%
Class I [Member] | Amended Distribution Support Agreement
Stockholders Equity [Line Items]
Common stock	$ 1,867,720
Purchase of shares to satisfy minimum offering requirement				$ 2,000,000.0
Class AX [Member]
Stockholders Equity [Line Items]
Common stock													$ 793	$ 1,447	$ 1,512
Common stock, shares authorized	10,000,000	10,000,000								10,000,000							10,000,000		10,000,000
Common stock, shares	3,340,319	3,450,361											79,333	144,689	150,441
Stock repurchase										$ 407	$ 995	$ 292	$ 325	$ 625	$ 173
Stock repurchased, shares										40,694	99,469	29,237	32,490	62,524	17,256
Class TX [Member]
Stockholders Equity [Line Items]
Common stock													$ 356	$ 492	$ 662
Common stock, shares authorized	5,000,000	5,000,000								5,000,000							5,000,000		5,000,000
Common stock, shares	1,449,782	1,472,875											35,693	49,180	66,220
Stock repurchase										$ 116	$ 150	$ 206	$ 19	$ 85	$ 80
Stock repurchased, shares										11,642	15,016	20,547	1,941	8,544	8,028
Class IX [Member]
Stockholders Equity [Line Items]
Common stock													$ 581	$ 892	$ 2,151
Common stock, shares authorized	5,000,000	5,000,000								5,000,000							5,000,000		5,000,000
Common stock, shares	1,206,643	1,218,108											58,024	89,113	215,102
Stock repurchase											$ 30	$ 290	$ 30	$ 159
Stock repurchased, shares											2,994	28,993	2,969	15,887
Class IX [Member] | CFI and Company Reimbursement Agreement [Member]
Stockholders Equity [Line Items]
Purchase of shares to satisfy minimum offering requirement																	$ 2,000,000.0
Class T [Member]
Stockholders Equity [Line Items]
Common stock										$ 1,367	$ 1,022	$ 982	$ 41
Common stock, shares authorized	100,000,000	100,000,000								100,000,000							100,000,000		100,000,000
Common stock, shares	382,990	44,884								136,657	102,256	98,221	4,083
Class S [Member]
Stockholders Equity [Line Items]
Common stock											$ 28
Common stock, shares authorized	20,000,000	20,000,000								20,000,000							20,000,000		20,000,000
Common stock, shares	4,361	1,567								1	2,790
Class D [Member]
Stockholders Equity [Line Items]
Common stock										$ 980	$ 242	$ 763
Common stock, shares authorized	60,000,000	60,000,000								60,000,000							60,000,000		60,000,000
Common stock, shares	236,761	39,281								98,012	24,145	76,298
Stock repurchase											$ 22
Stock repurchased, shares											2,183
Primary Offering [Member] | Class I [Member]
Stockholders Equity [Line Items]
Common stock								$ 2,000,000.0
Maximum [Member] | Second Amended and Restated Share Repurchase Program [Member]
Stockholders Equity [Line Items]
Percentage of common stock aggregate net asset value during prior quarter			5.00%
Maximum [Member] | Class I [Member] | Amended Distribution Support Agreement
Stockholders Equity [Line Items]
Purchase of shares by CFI				5,000,000
Maximum [Member] | Class IX [Member] | CFI and Company Reimbursement Agreement [Member]
Stockholders Equity [Line Items]
Purchase of shares by CFI																	$ 5,000,000
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				1,000,000,000.0	1,000,000,000.0
Maximum [Member] | Primary Offering [Member] | Class IX [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 AX and class TX [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
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	$ 50,000,000.0			$ 250,000,000	$ 250,000,000