XML 128 R101.htm IDEA: XBRL DOCUMENT v2.4.0.6
Commitments and Contingencies (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Real Estate Properties [Line Items]  
Costs Incurred to Date $ 624,002
Expected Costs to Complete 504,892 [1]
Wholly owned — under development [Member]
  
Real Estate Properties [Line Items]  
Number of Properties 7
Costs Incurred to Date 452,816
Expected Costs to Complete 427,984
Average Ownership Stake 100.00%
Wholly owned — redevelopment [Member]
  
Real Estate Properties [Line Items]  
Number of Properties 3
Costs Incurred to Date 94,492
Expected Costs to Complete 76,908
Average Ownership Stake 100.00%
Unconsolidated joint ventures [Member]
  
Real Estate Properties [Line Items]  
Number of Properties 2
Costs Incurred to Date 76,694
Expected Costs to Complete $ 0
Average Ownership Stake 95.00%
[1] Represents UDR's remaining equity commitment of unconsolidated joint ventures.