Reportable Segment (Tables)

9 Months Ended

Sep. 30, 2011

Reportable Segments [Abstract]

Summary of rental income and NOI for UDRs reportable segments and reconciliation of NOI to loss from continuing operations

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2011			2010			2011			2010
Reportable apartment home segment rental income
Same Communities
Western Region	$	50,905		$	48,299		$	149,472		$	143,942
Mid-Atlantic Region		39,656			38,027			117,205			112,662
Southeastern Region		33,227			31,672			97,893			94,663
Southwestern Region		12,468			11,830			36,613			35,325
Non-Mature communities/Other		54,191			30,497			136,984			79,283
Total segment and consolidated rental income	$	190,447		$	160,325		$	538,167		$	465,875
Reportable apartment home segment NOI
Same Communities
Western Region	$	35,674		$	32,719		$	103,633		$	98,374
Mid-Atlantic Region		27,206			25,630			80,259			76,298
Southeastern Region		20,430			19,431			60,712			58,460
Southwestern Region		7,402			6,978			21,836			20,740
Non-Mature communities/Other		36,801			18,270			89,940			47,433
Total segment and consolidated NOI		127,513			103,028			356,380			301,305
Reconciling items:
Non-property income		5,229			2,202			12,620			7,575
Property management		(5,238	)		(4,409	)		(14,800	)		(12,812	)
Other operating expenses		(1,539	)		(1,403	)		(4,540	)		(4,342	)
Depreciation and amortization		(96,554	)		(75,591	)		(271,830	)		(221,524	)
Interest		(40,079	)		(38,257	)		(118,642	)		(113,068	)
General and administrative		(11,919	)		(11,994	)		(35,512	)		(31,927	)
Other depreciation and amortization		(983	)		(1,224	)		(3,012	)		(3,755	)
Loss from unconsolidated entities		(1,580	)		(835	)		(4,260	)		(2,757	)
Redeemable non-controlling interests in OP		581			870			1,192			2,939
Non-controlling interests		(46	)		(31	)		(134	)		(111	)
Net gain on sale of depreciable property		11,364			3,878			56,063			4,034
Net loss attributable to UDR	$	(13,251	)	$	(23,766	)	$	(26,475	)	$	(74,443	)

Details of assets of UDR's reportable segments

	September 30,			December 31,
	2011			2010
Reportable apartment home segment assets:
Same communities:
Western Region	$	2,102,161		$	2,088,128
Mid-Atlantic Region		1,272,802			1,264,314
Southeastern Region		1,061,706			1,054,130
Southwestern Region		464,615			461,014
Non-mature communities/Other		3,325,980			2,013,761
Total segment assets		8,227,264			6,881,347
Accumulated depreciation		(1,804,100	)		(1,638,326	)
Total segment assets — net book value		6,423,164			5,243,021
Reconciling items:
Cash and cash equivalents		13,482			9,486
Marketable securities		—			3,866
Restricted cash		19,641			15,447
Deferred financing costs, net		23,709			27,267
Notes receivable		7,800			7,800
Investment in unconsolidated joint ventures		187,176			148,057
Other assets		129,931			74,596
Total consolidated assets	$	6,804,903		$	5,529,540