CONSOLIDATED STATEMENTS OF CASH FLOWS (UNITED DOMINION REALTY, L.P.) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Operating Activities
Net income/(loss)	$ 67,636	$ 64,920
Adjustments to reconcile net income/(loss) to net cash provided by/(used in) operating activities:
Depreciation and amortization	314,584	233,736
(Income)/loss from unconsolidated entities	(11,388)	(6,674)
Other	8,203	6,587
Changes in operating assets and liabilities:
(Increase)/decrease in operating assets	(20,282)	(2,166)
Increase/(decrease) in operating liabilities	6,741	(18,094)
Net cash provided by/(used in) operating activities	317,015	286,421
Investing Activities
Acquisition of real estate assets	(141,727)	(730,820)
Proceeds from sales of real estate investments, net	133,934	38,000
Capital expenditures and other major improvements - real estate assets	(64,083)	(70,240)
Distributions received from unconsolidated entities	5,731	26,906
Net cash provided by/(used in) investing activities	(161,894)	(805,993)
Financing Activities
Payments on secured debt	(31,621)	(1,900)
Other	(5,840)	3,714
Net cash provided by/(used in) financing activities	(165,536)	334,704
Net increase/(decrease) in cash, cash equivalents, and restricted cash	(10,415)	(184,868)
Cash, cash equivalents, and restricted cash, beginning of year	33,291	208,891
Cash, cash equivalents, and restricted cash, end of period	22,876	24,023
Supplemental Information:
Interest paid during the period, net of amounts capitalized	84,643	67,474
Non-cash transactions:
Development costs and capital expenditures incurred but not yet paid	26,400	12,251
Recognition of operating lease liabilities		88,336
Right-of-use asset obtained in exchange for new operating lease liability		94,349
Dividends declared but not yet paid	115,254	105,611
United Dominion Realty L.P.
Operating Activities
Net income/(loss)	44,501	52,144
Adjustments to reconcile net income/(loss) to net cash provided by/(used in) operating activities:
Depreciation and amortization	70,730	69,575
(Income)/loss from unconsolidated entities	3,422	4,534
Other	4,775	1,674
Changes in operating assets and liabilities:
(Increase)/decrease in operating assets	(6,864)	(1,397)
Increase/(decrease) in operating liabilities	1,234	(123)
Net cash provided by/(used in) operating activities	117,798	126,407
Investing Activities
Capital expenditures and other major improvements - real estate assets	(22,893)	(28,826)
Distributions received from unconsolidated entities	9,689	9,227
Net cash provided by/(used in) investing activities	(13,204)	(19,599)
Financing Activities
Issuance/(repayment) of notes payable to the General Partner	(96,891)	(103,066)
Distributions paid to partnership unitholders	(7,142)	(3,256)
Other	(10)
Net cash provided by/(used in) financing activities	(104,043)	(106,322)
Net increase/(decrease) in cash, cash equivalents, and restricted cash	551	486
Cash, cash equivalents, and restricted cash, beginning of year	14,022	13,688
Cash, cash equivalents, and restricted cash, end of period	14,573	14,174
Supplemental Information:
Interest paid during the period, net of amounts capitalized	21,117	19,287
Non-cash transactions:
Development costs and capital expenditures incurred but not yet paid	3,576	4,009
Recognition of operating lease right-of-use assets		94,174
Recognition of operating lease liabilities		88,161
Right-of-use asset obtained in exchange for new operating lease liability	91
LTIP Unit grants	8,664	15,417
Dividends declared but not yet paid	$ 66,833	$ 63,367