Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) property	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2017 USD ($)
Significant Of Accounting Policies [Line Items]
Other (expense) income	$ 3,319	$ 565,575	$ (899,465)
(Loss) income from interest rate derivatives	(755,519)	2,566,720	49,329
Loss from investment in real estate debt	(798,164)	167,083	(346,984)
Interest expense	3,072,741	2,307,515	847,440
Total assets	130,797,795	142,687,424
Total liabilities	86,977,764	91,933,250
Impairment of investments in real estate	204,800	0	0
Impairment of properties held for sale	31,300	33,600	0
Restricted cash	636,000	764,600
Income tax expense (benefit)	(5,700)	13,100	300
Deferred tax benefit	3,500	6,000	1,800
Current income tax expense	7,800	19,100	2,100
Deferred tax assets	28,300	17,600
Net realized and unrealized gain (loss) on equity securities	37,900	(520,800)	848,200
Real estate, held-for-sale	$ 585,700
Blackstone Advisory Partners L.P.
Significant Of Accounting Policies [Line Items]
Commission and fees, threshold percentage on gross proceeds from sale of share	8.75%
Adviser
Significant Of Accounting Policies [Line Items]
Organization and offering costs incurred				$ 10,200
Period for reimbursement of advance expenses	60 months
Reimbursement of organization and offering costs	$ 0	2,000	2,000
Class S
Significant Of Accounting Policies [Line Items]
Stockholder servicing fee (% of NAV)	0.85%
Selling commissions and dealer manager fees (% of transaction price)	3.50%
Class S | Blackstone Advisory Partners L.P.
Significant Of Accounting Policies [Line Items]
Stockholder servicing fee (% of NAV)	0.85%
Class T
Significant Of Accounting Policies [Line Items]
Stockholder servicing fee (% of NAV)	0.85%
Selling commissions and dealer manager fees (% of transaction price)	3.50%
Upfront selling commissions and dealer manager fees on transaction price	3.00%
Selling commissions and upfront dealer manager fees on transaction price	0.50%
Percentage of advisor stockholder servicing fee on NAV per annum	0.65%
Percentage of dealer stockholder servicing fee on NAV per annum	0.20%
Class T | Blackstone Advisory Partners L.P.
Significant Of Accounting Policies [Line Items]
Stockholder servicing fee (% of NAV)	0.85%
Class D
Significant Of Accounting Policies [Line Items]
Stockholder servicing fee (% of NAV)	0.25%
Selling commissions and dealer manager fees (% of transaction price)	1.50%
Class D | Blackstone Advisory Partners L.P.
Significant Of Accounting Policies [Line Items]
Stockholder servicing fee (% of NAV)	0.25%
Common Class S, Common Class D, And Common Class T
Significant Of Accounting Policies [Line Items]
Accrued stockholder servicing fee	$ 1,000,000	1,600,000
Affordable Housing Properties
Significant Of Accounting Policies [Line Items]
Number of real estate properties related to impairment | property	25
Office Properties:
Significant Of Accounting Policies [Line Items]
Number of real estate properties related to impairment | property	1
Student Housing Properties
Significant Of Accounting Policies [Line Items]
Number of real estate properties related to impairment | property	2
Revision of Prior Period, Reclassification, Adjustment | Reclassification from Other Income (Expense)
Significant Of Accounting Policies [Line Items]
Other (expense) income		476,900	902,700
(Loss) income from interest rate derivatives		476,900	902,700
Revision of Prior Period, Reclassification, Adjustment | Reclassification From Income From Investments In Real Estate
Significant Of Accounting Policies [Line Items]
(Loss) income from interest rate derivatives		122,300	57,500
Loss from investment in real estate debt		140,000	44,900
Interest expense		17,700	$ 12,600
Minimum
Significant Of Accounting Policies [Line Items]
Award requisite service period (in years)	3 years
Maximum
Significant Of Accounting Policies [Line Items]
Award requisite service period (in years)	4 years
Level 3
Significant Of Accounting Policies [Line Items]
Mortgage notes, term loans, and secured revolving credit facilities, secured financings on investments in real estate debt, and unsecured revolving credit facilities	$ 1,300,000	1,400,000
Level 3 | Minimum | Discounted cash flow | Discounted Cash Flow
Significant Of Accounting Policies [Line Items]
Other real estate owned, measurement input	0.063
Level 3 | Minimum | Exit capitalization rate | Discounted Cash Flow
Significant Of Accounting Policies [Line Items]
Other real estate owned, measurement input	0.043
Level 3 | Maximum | Discounted cash flow | Discounted Cash Flow
Significant Of Accounting Policies [Line Items]
Other real estate owned, measurement input	0.094
Level 3 | Maximum | Exit capitalization rate | Discounted Cash Flow
Significant Of Accounting Policies [Line Items]
Other real estate owned, measurement input	0.126
VIEs
Significant Of Accounting Policies [Line Items]
Total assets	$ 50,300,000	52,100,000
Total liabilities	$ 37,400,000	$ 37,800,000