Consolidated Statements of Cash Flows - USD ($)	10 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2017
Cash flows from operating activities:
Net loss	$ (115,000)	$ (87,550,000)
Adjustments to reconcile net loss to net cash provided by operating activities:
Management fee	0	8,867,000
Performance participation allocation	0	16,974,000
Depreciation and amortization	0	121,793,000
Unrealized gain on changes in fair value of financial instruments	0	(2,366,000)
Other items	0	228,000
Change in assets and liabilities:
(Increase) / decrease in other assets	0	(19,002,000)
Increase / (decrease) in due to affiliates	86,000	3,833,000
Increase / (decrease) in accounts payable, accrued expenses, and other liabilities	29,000	29,508,000
Net cash provided by operating activities	0	72,285,000
Cash flows from investing activities:
Acquisitions of real estate	0	(3,393,674,000)
Capital improvements to real estate	0	(9,953,000)
Pre-acquisition costs	0	(5,166,000)
Purchase of real estate-related securities	0	(930,147,000)
Proceeds from settlement of real estate-related securities	0	16,596,000
Net cash used in investing activities	0	(4,322,344,000)
Cash flows from financing activities:
Proceeds from issuance of common stock	0	1,718,992,000
Offering costs paid	0	(22,293,000)
Subscriptions received in advance	0	107,576,000
Repurchase of common stock	0	(669,000)
Borrowings from mortgage notes, term loans, and revolving credit facilities	0	2,174,030,000
Repayments from mortgage notes, term loans, and revolving credit facilities	0	(247,570,000)
Borrowings under repurchase agreements	0	695,419,000
Settlement of repurchase agreements	0	(12,571,000)
Borrowings from affiliate line of credit	0	1,089,350,000
Repayments on affiliate line of credit	0	(1,084,100,000)
Payment of deferred financing costs	0	(22,949,000)
Contributions from non-controlling interests	0	25,586,000
Distributions to non-controlling interests	0	(196,000)
Distributions	0	(13,017,000)
Net cash provided by financing activities	0	4,407,588,000
Net change in cash and cash equivalents and restricted cash	0	157,529,000
Cash and cash equivalents and restricted cash, beginning of period	200,000	200,000
Cash and cash equivalents and restricted cash, end of period	200,000	157,729,000
Reconciliation of cash and cash equivalents and restricted cash to the consolidated balance sheets:
Cash and cash equivalents	200,000	31,166,000
Restricted cash	0	126,563,000
Cash and cash equivalents and restricted cash, end of period	200,000	157,729,000
Supplemental disclosures:
Interest paid	0	27,073,000
Non-cash investing and financing activities:
Assumption of mortgage notes in conjunction with acquisitions of real estate	0	199,365,000
Assumption of other liabilities in conjunction with acquisitions of real estate	0	23,008,000
Accrued capital expenditures and acquisition related costs	0	687,000
Accrued pre-acquisition costs	0	1,422,000
Accrued distributions	0	7,716,000
Accrued stockholder servicing fee due to affiliate	0	102,076,000
Accrued offering costs due to affiliate	0	8,322,000
Distribution reinvestment	$ 0	$ 25,527,000