Condensed Consolidated Statements of Changes in Equity (Unaudited) - USD ($) $ in Thousands	Total	Third Party Joint Ventures [Member]	Common Stock [Member] Class S Shares [Member]	Common Stock [Member] Class I Shares [Member]	Common Stock [Member] Class T Shares [Member]	Common Stock [Member] Class D Shares [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit and Cumulative Distributions [Member]	Total Stockholders' Equity [Member]	Non-controlling Interests [Member] Third Party Joint Ventures [Member]	Non-controlling Interests [Member] BREIT OP Unitholders [Member]
Beginning Balance at Dec. 31, 2018	$ 3,914,954		$ 2,770	$ 1,083	$ 233	$ 304	$ 4,327,444	$ (587,548)	$ 3,744,286	$ 75,592	$ 95,076
Common stock issued	5,155,372		1,662	2,482	134	381	5,150,713		5,155,372
Offering costs	(213,228)						(213,228)		(213,228)
Distribution reinvestment	161,771		84	46	7	9	161,625		161,771
Common stock/units repurchased	(161,537)		(52)	(84)	(8)	(3)	(160,672)		(160,819)		(718)
Amortization of restricted stock grants/compensation awards	1,800			3			297		300		1,500
Net income (loss)	(228,291)							(220,721)	(220,721)	(3,631)	(3,939)
Distributions declared on common stock	(279,654)							(279,654)	(279,654)
Contributions from non-controlling interests	89,826									47,938	41,888
Distributions and redemptions to non-controlling interests	(33,486)									(27,826)	(5,660)
Allocation to redeemable non-controlling interests	(3,875)						(3,875)		(3,875)
Ending Balance at Sep. 30, 2019	8,403,652		4,464	3,530	366	691	9,262,304	(1,087,923)	8,183,432	92,073	128,147
Beginning Balance at Dec. 31, 2018	3,914,954		2,770	1,083	233	304	4,327,444	(587,548)	3,744,286	75,592	95,076
Ending Balance at Dec. 31, 2019	10,614,648		5,308	4,743	398	847	11,716,721	(1,422,885)	10,305,132	157,795	151,721
Beginning Balance at Jun. 30, 2019	6,376,375		3,812	2,286	319	529	6,969,300	(845,511)	6,130,735	113,725	131,915
Common stock issued	2,344,142		638	1,251	45	160	2,342,048		2,344,142
Offering costs	(59,354)						(59,354)		(59,354)
Distribution reinvestment	67,877		32	21	3	4	67,817		67,877
Common stock/units repurchased	(55,870)		(18)	(29)	(1)	(2)	(55,172)		(55,222)		(648)
Amortization of restricted stock grants/compensation awards	600			1			99		100		500
Net income (loss)	(125,762)							(123,171)	(123,171)	(625)	(1,966)
Distributions declared on common stock	(119,241)							(119,241)	(119,241)
Contributions from non-controlling interests	2,420									1,995	425
Distributions and redemptions to non-controlling interests	(25,101)									(23,022)	(2,079)
Allocation to redeemable non-controlling interests	(2,434)						(2,434)		(2,434)
Ending Balance at Sep. 30, 2019	8,403,652		4,464	3,530	366	691	9,262,304	(1,087,923)	8,183,432	92,073	128,147
Beginning Balance at Dec. 31, 2019	10,614,648		5,308	4,743	398	847	11,716,721	(1,422,885)	10,305,132	157,795	151,721
Common stock issued	6,974,538		1,555	4,278	75	282	6,968,348		6,974,538
Offering costs	(161,478)						(161,478)		(161,478)
Distribution reinvestment	357,195		153	140	9	24	356,869		357,195
Common stock/units repurchased	(1,148,122)		(396)	(571)	(32)	(57)	(1,145,159)		(1,146,215)		(1,907)
Amortization of restricted stock grants/compensation awards	1,269			3			297		300		969
Net income (loss)	(775,076)							(764,376)	(764,376)	(536)	(10,164)
Distributions declared on common stock	(686,495)							(686,495)	(686,495)
Contributions from non-controlling interests	72,557									11,394	61,163
Distributions and redemptions to non-controlling interests	(38,277)						(1,946)		(1,946)	(25,951)	(10,380)
Allocation to redeemable non-controlling interests	(6,731)	$ (6,700)					(6,731)		(6,731)
Ending Balance at Sep. 30, 2020	15,204,028		6,620	8,593	450	1,096	17,726,921	(2,873,756)	14,869,924	142,702	191,402
Beginning Balance at Jun. 30, 2020	14,569,513		6,322	8,200	440	1,032	16,952,056	(2,749,989)	14,218,061	159,459	191,993
Common stock issued	1,022,713		312	565	15	68	1,021,753		1,022,713
Offering costs	(35,098)						(35,098)		(35,098)
Distribution reinvestment	129,029		54	52	3	9	128,911		129,029
Common stock/units repurchased	(332,891)		(68)	(225)	(8)	(13)	(332,425)		(332,739)		(152)
Amortization of restricted stock grants/compensation awards	69			1			99		100		(31)
Net income (loss)	122,732							121,272	121,272	(328)	1,788
Distributions declared on common stock	(245,039)							(245,039)	(245,039)
Contributions from non-controlling interests	1,493									223	1,270
Distributions and redemptions to non-controlling interests	(22,064)						(1,946)		(1,946)	(16,652)	(3,466)
Allocation to redeemable non-controlling interests	(6,429)	$ (6,400)					(6,429)		(6,429)
Ending Balance at Sep. 30, 2020	$ 15,204,028		$ 6,620	$ 8,593	$ 450	$ 1,096	$ 17,726,921	$ (2,873,756)	$ 14,869,924	$ 142,702	$ 191,402