Equity and Redeemable Non-controlling Interest - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Equity [Line Items]
Number of Shares, Authorized to issue, Total	10,100,000,000		10,100,000,000
Common stock repurchased	31,281,214		105,593,735
BREIT OP units repurchased	13,907		7,484,350
Stock repurchased, value in operating partnership unit	$ 332,800		$ 1,200,000
Non-controlling interests attributable to third party joint ventures	142,702		142,702		$ 157,795
Allocation adjustment amount between additional paid-in capital and redeemable non controlling interest	6,429	$ 2,434	6,731	$ 3,875
Third Party Joint Ventures [Member]
Equity [Line Items]
Non-controlling interests attributable to third party joint ventures	27,700		27,700
Allocation adjustment amount between additional paid-in capital and redeemable non controlling interest	$ 6,400		$ 6,700