Equity and Redeemable Non-controlling Interest - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Equity [Line Items]
Number of Shares, Authorized to issue, Total	10,100,000,000
Common stock repurchased, value	$ 509,750	$ 516,222
Non-controlling interests attributable to third party joint ventures	142,932		$ 143,253
Allocation adjustment amount between additional paid-in capital and redeemable non controlling interest	2,775	508
Third Party Joint Ventures [Member]
Equity [Line Items]
Non-controlling interests attributable to third party joint ventures	31,900		$ 29,800
Allocation adjustment amount between additional paid-in capital and redeemable non controlling interest	$ 2,800	$ 500
Share Repurchase Plan [Member]
Equity [Line Items]
Common stock repurchased	43.5
BREIT OP units repurchased	9.8
Stock repurchased, value in operating partnership unit	$ 113,200
Common stock repurchased, value	$ 508,300