Real Estate and Accumulated Depreciation - Summary of Activity for Real Estate and Accumulated Depreciation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Real Estate:
Balance at the beginning of year	$ 3,389,601
Land and land improvements	1,387,724	$ 574,253
Building and building improvements	5,574,516	2,815,348
Balance at the end of the year	10,351,841	3,389,601
Accumulated Depreciation:
Balance at the beginning of year	(44,184)
Accumulated depreciation	(212,827)	(44,184)
Balance at the end of the year	$ (257,011)	$ (44,184)