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Debt (UNITED DOMINION REALTY, L.P.) (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 USD ($) Communities | Dec. 31, 2014 USD ($)
Debt Instrument [Line Items] |  |
Weighted Average Interest Rate | 3.74% |
Weighted Average Years to Maturity | 5 years 10 days |
Deferred Finance Costs, Net |  | $ 0
Fixed Rate Debt |  |
Debt Instrument [Line Items] |  |
Principal outstanding | $ 952,801 | 963,713
Weighted Average Interest Rate | 4.93% |
Weighted Average Years to Maturity | 3 years 8 months 19 days |
Number of Communities Encumbered | 26 |
Fixed Rate Debt | Mortgages [Member] |  |
Debt Instrument [Line Items] |  |
Weighted Average Interest Rate | 4.57% |
Weighted Average Years to Maturity | 4 years 6 months 3 days |
Number of Communities Encumbered | 8 |
Fixed Rate Debt | Fannie Mae credit facilities |  |
Debt Instrument [Line Items] |  |
Weighted Average Years to Maturity | 3 years 20 days |
Number of Communities Encumbered | 18 |
Variable Rate Debt |  |
Debt Instrument [Line Items] |  |
Principal outstanding | $ 424,144 | 390,608
Weighted Average Interest Rate | 1.53% |
Weighted Average Years to Maturity | 4 years 6 months 10 days |
Number of Communities Encumbered | 11 |
Variable Rate Debt | Mortgages [Member] |  |
Debt Instrument [Line Items] |  |
Weighted Average Interest Rate | 2.19% |
Weighted Average Years to Maturity | 1 year 26 days |
Number of Communities Encumbered | 1 |
Variable Rate Debt | Tax-exempt secured notes payable |  |
Debt Instrument [Line Items] |  |
Weighted Average Interest Rate | 0.75% |
Weighted Average Years to Maturity | 7 years 2 months 8 days |
Number of Communities Encumbered | 2 |
Variable Rate Debt | Fannie Mae credit facilities |  |
Debt Instrument [Line Items] |  |
Weighted Average Years to Maturity | 4 years 19 days |
Number of Communities Encumbered | 8 |
United Dominion Reality L.P. |  |
Debt Instrument [Line Items] |  |
Principal outstanding | $ 475,964 | 927,484
Weighted Average Interest Rate | 3.76% |
Weighted Average Years to Maturity | 4 years 6 months 14 days |
Number of Communities Encumbered | Communities | 16 |
Deferred Finance Costs, Net | $ (2,199) | (4,500)
United Dominion Reality L.P. | Fixed Rate Debt |  |
Debt Instrument [Line Items] |  |
Principal outstanding | $ 279,333 | 708,534
Weighted Average Interest Rate | 4.90% |
Weighted Average Years to Maturity | 3 years 3 months 9 days |
Number of Communities Encumbered | Communities | 9 |
United Dominion Reality L.P. | Fixed Rate Debt | Mortgages [Member] |  |
Debt Instrument [Line Items] |  |
Principal outstanding | $ 30,132 | 378,371
Weighted Average Interest Rate | 3.43% |
Weighted Average Years to Maturity | 7 months 2 days |
Number of Communities Encumbered | Communities | 1 |
United Dominion Reality L.P. | Fixed Rate Debt | Fannie Mae credit facilities |  |
Debt Instrument [Line Items] |  |
Weighted Average Interest Rate | 5.08% |
Weighted Average Years to Maturity | 3 years 7 months 27 days |
Number of Communities Encumbered | Communities | 8 |
United Dominion Reality L.P. | Variable Rate Debt |  |
Debt Instrument [Line Items] |  |
Principal outstanding | $ 196,631 | 218,950
Weighted Average Interest Rate | 1.74% |
Weighted Average Years to Maturity | 6 years 3 months |
Number of Communities Encumbered | Communities | 7 |
United Dominion Reality L.P. | Variable Rate Debt | Tax-exempt secured notes payable |  |
Debt Instrument [Line Items] |  |
Principal outstanding | $ 27,000 | 27,000
Weighted Average Interest Rate | 0.76% |
Weighted Average Years to Maturity | 16 years 2 months 19 days |
Number of Communities Encumbered | Communities | 1 |
United Dominion Reality L.P. | Variable Rate Debt | Fannie Mae credit facilities |  |
Debt Instrument [Line Items] |  |
Weighted Average Interest Rate | 1.90% |
Weighted Average Years to Maturity | 4 years 8 months 1 day |
Number of Communities Encumbered | Communities | 6 |
Secured Debt [Member] |  |
Debt Instrument [Line Items] |  |
Deferred Finance Costs, Net |  | (7,208)
Secured Debt [Member] | Fixed Rate Debt |  |
Debt Instrument [Line Items] |  |
Deferred Finance Costs, Net | $ (4,278) | (5,583)
Secured Debt [Member] | Variable Rate Debt |  |
Debt Instrument [Line Items] |  |
Deferred Finance Costs, Net | (1,271) | (1,625)
Secured Debt [Member] | United Dominion Reality L.P. | Fixed Rate Debt |  |
Debt Instrument [Line Items] |  |
Deferred Finance Costs, Net | (1,627) | (3,665)
Secured Debt [Member] | United Dominion Reality L.P. | Variable Rate Debt |  |
Debt Instrument [Line Items] |  |
Deferred Finance Costs, Net | $ (572) | $ (810)

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