Hurricane Related Charges (UNITED DOMINION REALTY, L.P.)	12 Months Ended
	Dec. 31, 2014
Entity Information [Line Items]
Hurricane Related Charges	-RELATED (RECOVERIES)/CHARGES In October 2012, Hurricane Sandy hit the East Coast, affecting three of the Company’s operating communities (1,706 apartment homes) located in New York City. The properties suffered some physical damage, and were closed to residents for a period following the hurricane. The Company has insurance policies that provide coverage for property damage and business interruption, subject to applicable retention. Based on the claims filed and management’s estimates, the Company recognized a $9.0 million impairment charge for the damaged assets’ net book value and incurred $10.4 million of repair and cleanup costs during the year ended December 31, 2012. The impairment charge and the repair and cleanup costs incurred were reduced as of December 31, 2012 by $14.5 million of estimated insurance recovery, and were classified in Casualty-related (recoveries)/charges, net on the Consolidated Statements of Operations. During the year ended December 31, 2013, no material adjustments to the impairment charge and the repair and cleanup costs incurred were recognized. With the exception of one of the properties that is under redevelopment at December 31, 2013, the rehabilitation of the remaining two properties was substantially completed as of December 31, 2013 and was completed during 2014. As of December 31, 2013, the Company had settled the Hurricane Sandy claims and received insurance proceeds in excess of the $14.5 million estimated insurance recovery receivable related to the impairment charge and the repair and cleanup costs incurred. As a result, the Company recognized a Casualty-related recovery of approximately $4.8 million and a casualty gain of approximately $654,000 for the year ended December 31, 2013. Both the recovery and casualty gain were classified in Casualty-related (recoveries)/charges, net on the Consolidated Statements of Operations. Based on the claims filed and management’s estimates, the Company recognized $4.4 million of business interruption losses for the year ended December 31, 2012, of which $3.6 million were related to rent concession rebates provided to residents during the period the properties were uninhabitable and were classified in Casualty-related (recoveries)/charges, net on the Consolidated Statements of Operations, and $767,000 were related to rent that was not contractually receivable and were classified as a reduction to Rental income on the Consolidated Statements of Operations. As noted below, the Company recovered from the insurance carrier approximately $4.2 million of the $4.4 million of 2012 business interruption losses. The Company estimates that it incurred an additional $3.4 million of business interruption losses for the year ended December 31, 2013. As noted below, the Company recovered from the insurance carrier approximately $2.6 million of the $3.4 million of 2013 business interruption losses. During the year ended December 31, 2013, the Company received approximately $6.8 million of insurance proceeds for recovery of business interruption losses. Of the $6.8 million of insurance proceeds received in 2013, $4.2 million related to recovery of business interruption losses incurred in 2012 and the remaining $2.6 million related to recovery of business interruption losses incurred in 2013. The $6.8 million of recovery was classified in Casualty-related (recoveries)/charges, net on the Consolidated Statements of Operations as of December 31, 2013. During the year ended December 31, 2014, the Company recorded $541,000 of casualty-related losses due to property damage incurred during an earthquake and a storm in California, all of which are included in Casualty-related (recoveries)/charges, net on the Consolidated Statements of Operations.
United Dominion Reality L.P.
Entity Information [Line Items]
Hurricane Related Charges	-RELATED (RECOVERIES)/CHARGES In October 2012, Hurricane Sandy hit the East Coast, affecting two of the Operating Partnership’s operating communities (1,001 apartment homes) located in New York City. The properties suffered some physical damage, and were closed to residents for a period following the hurricane. The Operating Partnership has insurance policies that provide coverage for property damage and business interruption, subject to applicable retention. Based on the claims filed and management’s estimates, the Operating Partnership recognized a $7.1 million impairment charge for the damaged assets’ net book value and incurred $7.0 million of repair and cleanup costs during the year ended December 31, 2012. The impairment charge and the repair and cleanup costs incurred were reduced as of December 31, 2012 by $10.8 million of estimated insurance recovery, and were classified in Casualty-related (recoveries)/charges, net on the Consolidated Statements of Operations. During the year ended December 31, 2013, no material adjustments to the impairment charge and the repair and cleanup costs incurred were recognized. The rehabilitation of these two properties was substantially completed as of December 31, 2013. As of December 31, 2013, the Operating Partnership had settled the Hurricane Sandy claims and received insurance proceeds in excess of the $10.8 million estimated insurance recovery receivable related to the impairment charge and the repair and cleanup costs incurred. As a result, the Operating Partnership recognized a Casualty-related recovery of approximately $3.3 million and a casualty gain of approximately $582,000 for the year ended December 31, 2013. Both the recovery and casualty gain were classified in Casualty-related (recoveries)/charges, net on the Consolidated Statements of Operations. Based on the claims filed and management’s estimates, the Operating Partnership recognized $2.2 million of business interruption losses for the year ended December 31, 2012, of which $1.8 million were related to rent concession rebates provided to residents during the period the properties were uninhabitable and were classified in Casualty-related (recoveries)/charges, net on the Consolidated Statements of Operations, and $400,000 were related to rent that was not contractually receivable and were classified as a reduction to Rental income on the Consolidated Statements of Operations. The Operating Partnership estimates that it incurred an additional $2.1 million of business interruption losses for the year ended December 31, 2013. As noted, the Operating Partnership settled the Hurricane Sandy claims as of December 31, 2013. During the year ended December 31, 2013, the Operating Partnership received approximately $4.2 million of insurance proceeds for recovery of business interruption losses. Of the $4.2 million of insurance proceeds received during the year ended December 31, 2013, $2.1 million related to recovery of business interruption losses incurred in 2012 and the remaining $2.1 million related to recovery of business interruption losses incurred in 2013. The $4.2 million of recovery was included in Casualty-related (recoveries)/charges, net on the Consolidated Statements of Operations.