Consolidated Statements of Cash Flows - USD ($) $ in Thousands	10 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net loss	$ (115)	$ (291,465)	$ (87,550)
Adjustments to reconcile net loss to net cash provided by operating activities:
Management fee	0	42,659	8,867
Performance participation allocation	0	37,484	16,974
Performance participation allocation			16,974
Depreciation and amortization	0	406,295	121,793
Unrealized loss/(gain) on changes in fair value of financial instruments	0	24,746	(2,366)
Other items	0	5,495	228
Change in assets and liabilities:
(Increase) / decrease in other assets	0	(67,540)	(19,002)
Increase / (decrease) in due to affiliates	86	2,099	3,833
Increase / (decrease) in accounts payable, accrued expenses, and other liabilities	29	92,909	29,508
Net cash provided by operating activities	0	252,682	72,285
Cash flows from investing activities:
Acquisitions of real estate	0	(7,005,983)	(3,393,674)
Capital improvements to real estate	0	(102,273)	(9,953)
Pre-acquisition costs	0	(8,331)	(5,166)
Purchase of real estate-related securities	0	(1,561,772)	(930,147)
Proceeds from sale or settlement of real estate-related securities	0	193,932	16,596
Net cash used in investing activities	0	(8,484,427)	(4,322,344)
Cash flows from financing activities:
Proceeds from issuance of common stock	0	2,701,651	1,718,992
Offering costs paid	0	(44,066)	(22,293)
Subscriptions received in advance	0	166,542	107,576
Repurchase of common stock	0	(49,466)	(669)
Redemption of redeemable non-controlling interest	0	(8,400)	0
Borrowings from mortgage notes, term loans, and revolving credit facilities	0	7,318,059	2,174,030
Repayments from mortgage notes, term loans, and revolving credit facilities	0	(2,767,093)	(247,570)
Borrowings under repurchase agreements	0	1,156,189	695,419
Settlement of repurchase agreements	0	(125,314)	(12,571)
Borrowings from affiliate line of credit	0	1,239,400	1,089,350
Repayments on affiliate line of credit	0	(1,244,650)	(1,084,100)
Payment of deferred financing costs	0	(46,634)	(22,949)
Contributions from non-controlling interests	0	147,593	25,586
Distributions to non-controlling interests	0	(4,413)	(196)
Distributions	0	(58,769)	(13,017)
Net cash provided by financing activities	0	8,380,629	4,407,588
Net change in cash and cash equivalents and restricted cash	0	148,884	157,529
Cash and cash equivalents and restricted cash, beginning of period	200	157,729	200
Cash and cash equivalents and restricted cash, end of period	200	306,613	157,729
Reconciliation of cash and cash equivalents and restricted cash to the consolidated balance sheets:
Cash and cash equivalents	200	68,089	31,166
Restricted cash	0	238,524	126,563
Cash and cash equivalents and restricted cash, end of period	200	306,613	157,729
Supplemental disclosures:
Interest paid	0	208,042	27,073
Non-cash investing and financing activities:
Assumption of mortgage notes in conjunction with acquisitions of real estate	0	208,480	199,365
Assumption of other liabilities in conjunction with acquisitions of real estate	0	66,525	23,008
Acquired non-controlling interests	0	12,802	0
Accrued capital expenditures and acquisition related costs	0	2,010	687
Accrued pre-acquisition costs	0	442	1,422
Accrued distributions	0	13,644	7,716
Accrued stockholder servicing fee due to affiliate	0	136,420	102,076
Accrued offering costs due to affiliate	0		8,322
Redeemable non-controlling interest issued as settlement of performance participation allocation	0	16,974	0
Allocation to redeemable non-controlling interest	0	2,192	0
Distribution reinvestment	0	101,985	25,527
Accrued common stock repurchases	$ 0	$ 6,961	$ 0