COMMITMENTS AND CONTINGENCIES - Real Estate Commitments (Details) $ in Thousands	Dec. 31, 2018 USD ($) community item
Commitments
Number of communities owned (in communities) \| community	127
Investment	$ 47,398
UDR's Remaining Commitment	62,392
Development land parcel, Denver, Colorado
Commitments
Contractual purchase price commitment	13,700
Deposit	$ 1,000
Preferred Equity Investments
Commitments
Number of communities owned (in communities) \| item	3
Investment	$ 43,244
UDR's Remaining Commitment	48,892
Other investments
Commitments
Investment	4,154
UDR's Remaining Commitment	$ 13,500

This element represents the aggregate cost of investments accounted for under the equity method of accounting.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

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- Definition

Minimum amount to be expended to satisfy the terms of arrangements in which the entity has agreed to expend funds to procure goods or services, excluding long-term purchase commitments or unconditional purchase obligations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
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-Section S99
-Paragraph 1
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- Definition

Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier.

+ References

No definition available.

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The amount of an asset, typically cash, provided to a counterparty to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, such as a lease.

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