Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	May 15, 2019
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Entity Registrant Name	BLACKSTONE REAL ESTATE INCOME TRUST, INC.
Entity Central Index Key	0001662972
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Class S Shares [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		356,946,820
Class I Shares [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		151,588,240
Class D Shares [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		46,242,127
Class T Shares [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		30,378,974