Equity and Redeemable Non-controlling Interest - Additional Information (Detail) $ in Thousands	10 Months Ended	12 Months Ended
	Dec. 31, 2016 USD ($)	Dec. 31, 2018 USD ($) Class shares	Dec. 31, 2017 USD ($) shares
Equity [Line Items]
Number of classes of common stock | Class		4
Number of Shares, Authorized to issue, Total | shares		2,100,000,000	2,100,000,000
Common stock repurchased | shares		5,245,304	66,888
Common stock repurchased, value		$ 56,427	$ 669
Effective income tax rate distribution for ordinary income, percent		3.11%	34.15%
Effective income tax rate distribution for return of capital, percent		96.89%	65.85%
Ordinary income not qualified for distributions payment		0.51%	32.55%
Ordinary income qualified for distributions payment		2.60%	1.60%
Allocation adjustment amount between additional paid-in capital and redeemable non controlling interest		$ 2,192
Contributions from non-controlling interests	$ 0	147,593	$ 25,586
BREIT OP [Member] | Class B Units [Member] | Blackstone-advised Entity [Member]
Equity [Line Items]
Contributions from non-controlling interests		$ 100,000
Partnership units outstanding | shares		9,268,500