Consolidated Statement of Equity - USD ($)	Total	Common Stock Class A [Member]	Common Stock Class T [Member]	Common Stock Class W [Member]	Common Stock Class Y [Member]	Common Stock Class Z [Member]	Additional Paid-in Capital [Member]	Distributions [Member]	Accumulated Deficit [Member]	Strategic Student & Senior Housing Trust, Inc. [Member]	Noncontrolling Interests in our Operating Partnership [Member]	Preferred Equity in our Operating Partnership [Member]	Redeemable Common Stock [Member]
Beginning Balance at Dec. 31, 2018	$ 52,304,923	$ 11,122	$ 36	$ 44			$ 83,533,060	$ (7,981,638)	$ (22,263,678)	$ 53,298,946	$ (994,023)	$ 10,095,708	$ 2,659,654
Beginning Balance, shares at Dec. 31, 2018		11,122,135	36,299	43,996
Gross proceeds from issuance of common stock	1,993,382	$ 160	$ 16	$ 23			1,993,183			1,993,382
Gross proceeds from issuance of common stock, shares		159,655	15,500	22,872
Offering costs	(425,357)						(425,357)			(425,357)
Reimbursement of offering costs by Advisor	6,470						6,470			6,470
Changes to redeemable common stock	(565,651)						(565,651)			(565,651)			565,651
Redemptions of common stock													(48,600)
Distributions	(1,726,681)							(1,726,681)		(1,726,681)
Distributions to noncontrolling interests	(2,690)										(2,690)
Distributions to preferred unitholders in our Operating Partnership												(238,240)
Issuance of shares for distribution reinvestment plan	565,651	$ 57					565,594			565,651
Issuance of shares for distribution reinvestment plan (in shares)		57,271	220	184
Stock based compensation expense	4,406						4,406			4,406
Net loss attributable to Strategic Student & Senior Housing Trust, Inc.	(4,740,781)								(4,740,781)	(4,740,781)		238,240
Net loss attributable to the noncontrolling interests	(9,517)										(9,517)
Accretion of non-cash preferred equity issuance costs												11,649
Ending Balance at Mar. 31, 2019	47,404,155	$ 11,339	$ 52	$ 67			85,111,705	(9,708,319)	(27,004,459)	48,410,385	(1,006,230)	10,107,357	3,176,705
Ending Balance, shares at Mar. 31, 2019		11,339,061	52,019	67,052
Beginning Balance at Dec. 31, 2018	52,304,923	$ 11,122	$ 36	$ 44			83,533,060	(7,981,638)	(22,263,678)	53,298,946	(994,023)	10,095,708	2,659,654
Beginning Balance, shares at Dec. 31, 2018		11,122,135	36,299	43,996
Net loss attributable to Strategic Student & Senior Housing Trust, Inc.	(9,384,956)
Net loss attributable to the noncontrolling interests	(19,853)
Ending Balance at Jun. 30, 2019	41,558,998	$ 11,469	$ 71	$ 83			85,705,345	(11,487,606)	(31,648,634)	42,580,728	(1,021,730)	10,119,005	3,649,683
Ending Balance, shares at Jun. 30, 2019		11,468,374	70,512	83,604
Beginning Balance at Mar. 31, 2019	47,404,155	$ 11,339	$ 52	$ 67			85,111,705	(9,708,319)	(27,004,459)	48,410,385	(1,006,230)	10,107,357	3,176,705
Beginning Balance, shares at Mar. 31, 2019		11,339,061	52,019	67,052
Gross proceeds from issuance of common stock	1,120,761	$ 76	$ 18	$ 16			1,120,651			1,120,761
Gross proceeds from issuance of common stock, shares		76,163	18,100	16,277
Offering costs	(533,854)						(533,854)			(533,854)
Reimbursement of offering costs by Advisor	1,530						1,530			1,530
Changes to redeemable common stock	(588,006)						(588,006)			(588,006)			588,006
Redemptions of common stock	(9)	$ (9)								(9)			(115,028)
Redemptions of common stock (in shares)		(8,646)
Distributions	(1,779,287)							(1,779,287)		(1,779,287)
Distributions to noncontrolling interests	(5,164)										(5,164)
Distributions to preferred unitholders in our Operating Partnership												(243,810)
Issuance of shares for distribution reinvestment plan	588,006	$ 60	$ 1				587,945			588,006
Issuance of shares for distribution reinvestment plan (in shares)		59,296	393	275
Issuance of restricted stock	3	$ 3								3
Issuance of restricted stock (in shares)		2,500
Stock based compensation expense	5,374						5,374			5,374
Net loss attributable to Strategic Student & Senior Housing Trust, Inc.	(4,644,175)								(4,644,175)	(4,644,175)		243,810
Net loss attributable to the noncontrolling interests	(10,336)										(10,336)
Accretion of non-cash preferred equity issuance costs												11,648
Ending Balance at Jun. 30, 2019	41,558,998	$ 11,469	$ 71	$ 83			85,705,345	(11,487,606)	(31,648,634)	42,580,728	(1,021,730)	10,119,005	3,649,683
Ending Balance, shares at Jun. 30, 2019		11,468,374	70,512	83,604
Beginning Balance at Dec. 31, 2019	35,494,345	$ 11,566	$ 77	$ 86	$ 768	$ 159	93,609,304	(15,238,571)	(41,837,130)	36,546,259	(1,051,914)	10,142,303	4,723,961
Beginning Balance, shares at Dec. 31, 2019		11,565,901	76,991	85,198	768,611	159,070
Gross proceeds from issuance of common stock	3,313,673				$ 349	$ 7	3,313,317			3,313,673
Gross proceeds from issuance of common stock, shares					349,320	6,989
Offering costs	(559,004)						(559,004)			(559,004)
Reimbursement of offering costs by Advisor	245,557						245,557			245,557
Changes to redeemable common stock	(625,507)						(625,507)			(625,507)			625,507
Redemptions of common stock	(4)	$ (4)								(4)
Redemptions of common stock (in shares)		(3,544)
Distributions	(1,958,880)							(1,958,880)		(1,958,880)
Distributions to noncontrolling interests	(3,950)										(3,950)
Distributions to preferred unitholders in our Operating Partnership												(259,553)
Issuance of shares for distribution reinvestment plan	625,507	$ 60	$ 1	$ 1	$ 5	$ 1	625,439			625,507
Issuance of shares for distribution reinvestment plan (in shares)		60,450	607	350	5,418	435
Stock based compensation expense	5,875						5,875			5,875
Net loss attributable to Strategic Student & Senior Housing Trust, Inc.	(4,068,077)								(4,068,077)	(4,068,077)		259,553
Net loss attributable to the noncontrolling interests	(8,096)										(8,096)
Accretion of non-cash preferred equity issuance costs												3,884
Ending Balance at Mar. 31, 2020	32,461,439	$ 11,622	$ 78	$ 87	$ 1,122	$ 167	96,614,981	(17,197,451)	(45,905,207)	33,525,399	(1,063,960)	10,146,187	5,349,468
Ending Balance, shares at Mar. 31, 2020		11,622,807	77,598	85,548	1,123,349	166,494
Beginning Balance at Dec. 31, 2019	35,494,345	$ 11,566	$ 77	$ 86	$ 768	$ 159	93,609,304	(15,238,571)	(41,837,130)	36,546,259	(1,051,914)	10,142,303	4,723,961
Beginning Balance, shares at Dec. 31, 2019		11,565,901	76,991	85,198	768,611	159,070
Net loss attributable to Strategic Student & Senior Housing Trust, Inc.	(8,316,824)
Net loss attributable to the noncontrolling interests	(16,566)
Ending Balance at Jun. 30, 2020	29,242,767	$ 11,625	$ 78	$ 87	$ 1,122	$ 167	97,655,806	(17,199,734)	(50,153,954)	30,315,197	(1,072,430)	10,150,066	5,350,610
Ending Balance, shares at Jun. 30, 2020		11,625,430	77,598	85,548	1,123,349	166,494
Beginning Balance at Mar. 31, 2020	$ 32,461,439	$ 11,622	$ 78	$ 87	$ 1,122	$ 167	96,614,981	(17,197,451)	(45,905,207)	33,525,399	(1,063,960)	10,146,187	5,349,468
Beginning Balance, shares at Mar. 31, 2020		11,622,807	77,598	85,548	1,123,349	166,494
Gross proceeds from issuance of common stock, shares	0
Offering costs	$ (62,721)						(62,721)			(62,721)
Adjustment to offering costs	503,373						503,373			503,373
Reimbursement of offering costs by Advisor	593,991						593,991			593,991
Changes to redeemable common stock	(1,142)						(1,142)			(1,142)			1,142
Distributions	(2,283)							(2,283)		(2,283)
Distributions to preferred unitholders in our Operating Partnership												(265,207)
Issuance of shares for distribution reinvestment plan	1,142						1,142			1,142
Issuance of shares for distribution reinvestment plan (in shares)		123
Issuance of restricted stock	3	$ 3								3
Issuance of restricted stock (in shares)		2,500
Stock based compensation expense	6,182						6,182			6,182
Net loss attributable to Strategic Student & Senior Housing Trust, Inc.	(4,248,747)								(4,248,747)	(4,248,747)		265,207
Net loss attributable to the noncontrolling interests	(8,470)										(8,470)
Accretion of non-cash preferred equity issuance costs												3,879
Ending Balance at Jun. 30, 2020	$ 29,242,767	$ 11,625	$ 78	$ 87	$ 1,122	$ 167	$ 97,655,806	$ (17,199,734)	$ (50,153,954)	$ 30,315,197	$ (1,072,430)	$ 10,150,066	$ 5,350,610
Ending Balance, shares at Jun. 30, 2020		11,625,430	77,598	85,548	1,123,349	166,494