SEC Schedule III Rollforward of Real Estate Assets and Accumulated Depreciation (Tables)

12 Months Ended

Dec. 31, 2018

SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract]

Schedule of Real Estate Properties

The following is a reconciliation of real estate assets and accumulated depreciation:

	Year Ended December 31,
	2018		2017		2016
Real Estate
Balance at beginning of period	$	14,756,295	$	14,187,820	$	13,545,295
Additions during the period:
Land	170,065		21,298		30,805
Buildings & improvements	1,665,684		598,820		854,194
	16,592,044		14,807,938		14,430,294
Less: Assets sold, written-off and deconsolidated	354,161		51,643		242,474
Balance at end of period	$	16,237,883	$	14,756,295	$	14,187,820
Accumulated Depreciation
Balance at beginning of period	$	2,885,283	$	2,581,514	$	2,356,728
Additions charged to operating expenses	381,500		360,391		346,755
	3,266,783		2,941,905		2,703,483
Less: Accumulated depreciation on assets sold, written-off and deconsolidated	86,608		56,622		121,969
Balance at end of period	$	3,180,175	$	2,885,283	$	2,581,514