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Consolidated Statements of Changes in Capital (UNITED DOMINION REALTY, L.P) (Unaudited) - United Dominion Reality L.P. [Member] - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2015
Balance, December 31, 2014 |  | $ 1,734,051
Advances (to)/from General Partner | $ (2,956) | (2,956)
Net income/(loss) |  | 84,470
Distributions |  | 101,927
OP Unit Redemptions for common shares of UDR | 0 |
Adjustment to reflect limited partners' capital at redemption value | 0 |
Unrealized Gain (Loss) on Derivatives |  | 476
Net change in amount due to/(from) General Partner |  | (10,668)
Balance, June 30, 2015 | 1,706,402 | 1,706,402
Payable/(Receivable) due to/(from) General Partner [Member] [Member] |  |
Net change in amount due to/(from) General Partner |  | (10,668)
Accumulated Other Comprehensive Income (Loss) [Member] |  |
Balance, December 31, 2014 |  | (1,075)
Unrealized Gain (Loss) on Derivatives |  | 476
Balance, June 30, 2015 | (599) | (599)
Partnership Capital [Member] |  |
Balance, December 31, 2014 |  | 1,703,001
Net income/(loss) |  | 83,729
Distributions |  | 101,927
Adjustment to reflect limited partners' capital at redemption value | 0 |
Balance, June 30, 2015 | 1,685,279 | 1,685,279
Noncontrolling Interest [Member] |  |
Balance, December 31, 2014 |  | 17,426
Net income/(loss) |  | 741
Balance, June 30, 2015 | 18,167 | 18,167
Partnership Capital [Member] |  |
OP Unit Redemptions for common shares of UDR | 0 |
Unrealized Gain (Loss) on Derivatives |  | 476
Class A Limited Partner [Member] |  |
Balance, December 31, 2014 |  | 53,987
Net income/(loss) |  | 868
Distributions |  | (1,164)
Adjustment to reflect limited partners' capital at redemption value |  | 2,415
Balance, June 30, 2015 | 56,106 | 56,106
Limited Partners [Member] |  |
Balance, December 31, 2014 |  | 228,493
Net income/(loss) |  | 3,357
Distributions |  | (4,086)
OP Unit Redemptions for common shares of UDR |  | (3,496)
Adjustment to reflect limited partners' capital at redemption value |  | 9,905
Balance, June 30, 2015 | 234,173 | 234,173
Limited Partner [Member] |  |
Balance, December 31, 2014 |  | 1,420,491
Net income/(loss) |  | 79,453
Distributions |  | (96,615)
OP Unit Redemptions for common shares of UDR |  | 3,496
Adjustment to reflect limited partners' capital at redemption value |  | (12,320)
Balance, June 30, 2015 | 1,394,505 | 1,394,505
General Partner [Member] |  |
Balance, December 31, 2014 |  | 1,105
Net income/(loss) |  | 51
Distributions |  | (62)
Balance, June 30, 2015 | $ 1,094 | $ 1,094

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