Consolidated Statements of Comprehensive Income / Loss (UNITED DOMINION REALTY, L.P.) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net (loss)/income	$ 5,354	$ 156,306	$ 5,045	$ 242,934
Other comprehensive income/(loss):
Unrealized holding (loss)/gain	144	(1,533)	52	(3,492)
Loss reclassifed into earnings from other comprehensive income	1,608	1,897	3,545	3,752
Other comprehensive income/(loss)	1,752	364	3,597	260
Comprehensive (loss)/income	7,106	156,670	8,642	243,194
Comprehensive (loss)/income attributable to non-controlling interests	226	5,983	272	9,388
Comprehensive (loss)/income attributable to Entity	6,880	150,687	8,370	233,806
United Dominion Reality L.P. [Member]
Rental revenues percent of General Partner's consolidated rental revenues	54.00%	53.00%	54.00%	53.00%
Net (loss)/income	10,220	51,403	17,994	44,511
Other comprehensive income/(loss):
Unrealized holding (loss)/gain	(29)	(701)	(83)	(1,370)
Loss reclassifed into earnings from other comprehensive income	569	850	1,451	1,682
Other comprehensive income/(loss)	540	149	1,368	312
Comprehensive (loss)/income	10,760	51,552	19,362	44,823
Comprehensive (loss)/income attributable to non-controlling interests	(66)	(231)	(112)	(265)
Comprehensive (loss)/income attributable to Entity	$ 10,694	$ 51,321	$ 19,250	$ 44,558

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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- Definition

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the economic entity, including both controlling (parent) and noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, including any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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- Definition

The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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- Definition

Net of tax amount, before reclassification adjustments, of the change in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Also includes an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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