SIGNIFICANT ACCOUNTING POLICIES (UNITED DOMINION REALTY, L.P.) (Details) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2020 USD ($)	Sep. 30, 2020 USD ($)
Accounting policies
Adjustment to rental income	$ 4.4	$ 12.9
Adjustment to income (loss)	0.4	0.9
Multifamily tenant lease
Accounting policies
Increase in reserves	4.0	9.5
Retail tenant lease
Accounting policies
Increase in reserves	0.8	4.3
Straight-line lease
Accounting policies
Allowance for doubtful accounts	2.9	2.9
United Dominion Realty L.P.
Accounting policies
Unrecognized Tax Benefits	0.0	0.0
Adjustment to rental income	2.0	6.6
United Dominion Realty L.P. \| Multifamily tenant lease
Accounting policies
Adjustment to rental income	1.6	3.6
United Dominion Realty L.P. \| Retail tenant lease
Accounting policies
Adjustment to rental income	0.4	3.0
United Dominion Realty L.P. \| Straight-line lease
Accounting policies
Adjustment to rental income	$ 0.0
Adjustment to income (loss)		$ 2.2

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The amount of adjustment to profit loss due to COVID 19 pandemic.

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The amount of adjustment to rental income due to COVID 19 pandemic

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Amount of increase (decrease) of allowance reserve for credit loss.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount of unrecognized tax benefits.

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