Fair Value of Derivatives and Financial Instruments (UNITED DOMINION REALTY, L.P.) (Details) (USD $) | Sep. 30, 2013 | Dec. 31, 2012 | Sep. 30, 2012 |
In Thousands, unless otherwise specified |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Derivatives - Interest rate contracts | $0 | | $2 | | | |
Derivative Liability Designated as Hedging Instrument, Fair Value | 6,398 | | 11,022 | | | |
Fair Value, Measurements, Recurring [Member] | | | | | | |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Total assets | 67,562 | | | | | |
Secured debt instruments - variable rate | | | | | | |
Total liabilities | 3,595,524 | | | | 3,654,305 | |
Interest Rate Contracts [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Derivative Liability Designated as Hedging Instrument, Fair Value | 6,398 | [1] | | | 11,022 | [1] |
Mortgages Notes Payable [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - fixed rate | | | | | | |
Secured debt instruments - fixed rate | 468,211 | [2] | | | 494,728 | [2] |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | | | | | 37,415 | [2] |
Tax Exempt Notes Payable [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | 94,700 | [2] | | | 94,700 | [2] |
Line of Credit [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - fixed rate | | | | | | |
Secured debt instruments - fixed rate | 657,504 | [2] | | | 689,295 | [2] |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | 211,409 | [2] | | | 211,409 | [2] |
Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Total assets | 0 | | | | | |
Secured debt instruments - variable rate | | | | | | |
Total liabilities | 0 | | | | 0 | |
Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Total assets | 0 | | | | | |
Secured debt instruments - variable rate | | | | | | |
Total liabilities | 6,398 | | | | 11,022 | |
Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Total assets | 67,562 | | | | | |
Secured debt instruments - variable rate | | | | | | |
Total liabilities | 3,589,126 | | | | 3,643,283 | |
United Dominion Reality L.P. [Member] | | | | | | |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Derivatives - Interest rate contracts | 0 | | 2 | | | |
Derivative Liability Designated as Hedging Instrument, Fair Value | 3,181 | | 4,750 | | | |
United Dominion Reality L.P. [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Total assets | | | 2 | | | |
Secured debt instruments - variable rate | | | | | | |
Total liabilities | 971,826 | | 1,035,714 | | | |
United Dominion Reality L.P. [Member] | Interest Rate Contracts [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Derivatives - Interest rate contracts | | | 2 | [3] | | |
Derivative Liability Designated as Hedging Instrument, Fair Value | 3,181 | [3] | 4,750 | [3] | | |
United Dominion Reality L.P. [Member] | Mortgages Notes Payable [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - fixed rate | | | | | | |
Secured debt instruments - fixed rate | 406,823 | [4] | 429,973 | [4] | | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | | | 37,415 | [4] | | |
United Dominion Reality L.P. [Member] | Tax Exempt Notes Payable [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | 27,000 | [4] | 27,000 | [4] | | |
United Dominion Reality L.P. [Member] | Line of Credit [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - fixed rate | | | | | | |
Secured debt instruments - fixed rate | 392,764 | [4] | 399,389 | [4] | | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | 142,058 | [4] | 137,187 | [4] | | |
United Dominion Reality L.P. [Member] | Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Total assets | | | 0 | | | |
Secured debt instruments - variable rate | | | | | | |
Total liabilities | 0 | | 0 | | | |
United Dominion Reality L.P. [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Total assets | | | 2 | | | |
Secured debt instruments - variable rate | | | | | | |
Total liabilities | 3,181 | | 4,750 | | | |
United Dominion Reality L.P. [Member] | Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Total assets | | | 0 | | | |
Secured debt instruments - variable rate | | | | | | |
Total liabilities | 968,645 | | 1,030,964 | | | |
Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Total assets | | | 64,932 | | | |
Estimate of Fair Value, Fair Value Disclosure [Member] | Interest Rate Contracts [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Derivatives - Interest rate contracts | | | 2 | | | |
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Total assets | | | 0 | | | |
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 1 [Member] | Interest Rate Contracts [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Derivatives - Interest rate contracts | | | 0 | | | |
Derivative Liability Designated as Hedging Instrument, Fair Value | 0 | | | | 0 | |
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 1 [Member] | Mortgages Notes Payable [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - fixed rate | | | | | | |
Secured debt instruments - fixed rate | 0 | | | | 0 | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | | | | | 0 | |
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 1 [Member] | Tax Exempt Notes Payable [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | 0 | | | | 0 | |
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 1 [Member] | Line of Credit [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - fixed rate | | | | | | |
Secured debt instruments - fixed rate | 0 | | | | 0 | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | 0 | | | | 0 | |
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Total assets | | | 2 | | | |
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 2 [Member] | Interest Rate Contracts [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Derivatives - Interest rate contracts | | | 2 | | | |
Derivative Liability Designated as Hedging Instrument, Fair Value | 6,398 | | | | | |
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 2 [Member] | Mortgages Notes Payable [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - fixed rate | | | | | | |
Secured debt instruments - fixed rate | 0 | | | | 0 | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | | | | | 0 | |
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 2 [Member] | Tax Exempt Notes Payable [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | 0 | | | | 0 | |
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 2 [Member] | Line of Credit [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - fixed rate | | | | | | |
Secured debt instruments - fixed rate | 0 | | | | 0 | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | 0 | | | | 0 | |
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Total assets | | | 64,930 | | | |
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 3 [Member] | Interest Rate Contracts [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Derivatives - Interest rate contracts | | | 0 | | | |
Derivative Liability Designated as Hedging Instrument, Fair Value | 0 | | | | 0 | |
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 3 [Member] | Mortgages Notes Payable [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - fixed rate | | | | | | |
Secured debt instruments - fixed rate | 468,211 | | | | 494,728 | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | | | | | 37,415 | |
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 3 [Member] | Tax Exempt Notes Payable [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | 94,700 | | | | 94,700 | |
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 3 [Member] | Line of Credit [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - fixed rate | | | | | | |
Secured debt instruments - fixed rate | 657,504 | | | | 689,295 | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | 211,409 | | | | 211,409 | |
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 1 [Member] | Interest Rate Contracts [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Derivatives - Interest rate contracts | | | 0 | | | |
Derivative Liability Designated as Hedging Instrument, Fair Value | 0 | | 0 | | | |
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 1 [Member] | Mortgages Notes Payable [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - fixed rate | | | | | | |
Secured debt instruments - fixed rate | 0 | | 0 | | | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | | | 0 | | | |
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 1 [Member] | Tax Exempt Notes Payable [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | 0 | | 0 | | | |
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 1 [Member] | Line of Credit [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - fixed rate | | | | | | |
Secured debt instruments - fixed rate | 0 | | 0 | | | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | 0 | | 0 | | | |
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 2 [Member] | Interest Rate Contracts [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Derivatives - Interest rate contracts | | | 2 | | | |
Derivative Liability Designated as Hedging Instrument, Fair Value | 3,181 | | 4,750 | | | |
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 2 [Member] | Mortgages Notes Payable [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - fixed rate | | | | | | |
Secured debt instruments - fixed rate | 0 | | 0 | | | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | | | 0 | | | |
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 2 [Member] | Tax Exempt Notes Payable [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | 0 | | 0 | | | |
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 2 [Member] | Line of Credit [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - fixed rate | | | | | | |
Secured debt instruments - fixed rate | 0 | | 0 | | | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | 0 | | 0 | | | |
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 3 [Member] | Interest Rate Contracts [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Derivatives - Interest rate contracts | | | 0 | | | |
Derivative Liability Designated as Hedging Instrument, Fair Value | 0 | | 0 | | | |
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 3 [Member] | Mortgages Notes Payable [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - fixed rate | | | | | | |
Secured debt instruments - fixed rate | 406,823 | | 429,973 | | | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | | | 37,415 | | | |
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 3 [Member] | Tax Exempt Notes Payable [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | 27,000 | | 27,000 | | | |
Estimate of Fair Value, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Level 3 [Member] | Line of Credit [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - fixed rate | | | | | | |
Secured debt instruments - fixed rate | 392,764 | | 399,389 | | | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | 142,058 | | 137,187 | | | |
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Total assets | 66,707 | | 64,008 | | | |
Secured debt instruments - variable rate | | | | | | |
Total liabilities | 3,469,570 | | 3,420,355 | | | |
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Interest Rate Contracts [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Derivatives - Interest rate contracts | | | 2 | | | |
Derivative Liability Designated as Hedging Instrument, Fair Value | 6,398 | | 11,022 | | | |
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Mortgages Notes Payable [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - fixed rate | | | | | | |
Secured debt instruments - fixed rate | 448,191 | | 455,533 | | | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | | | 37,415 | | | |
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Tax Exempt Notes Payable [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | 94,700 | | 94,700 | | | |
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Line of Credit [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - fixed rate | | | | | | |
Secured debt instruments - fixed rate | 627,494 | | 631,078 | | | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | 211,409 | | 211,409 | | | |
Carrying (Reported) Amount, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Total assets | | | 2 | | | |
Secured debt instruments - variable rate | | | | | | |
Total liabilities | 940,204 | | 971,989 | | | |
Carrying (Reported) Amount, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Interest Rate Contracts [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis | | | | | | |
Derivatives - Interest rate contracts | | | 2 | | | |
Derivative Liability Designated as Hedging Instrument, Fair Value | 3,181 | | 4,750 | | | |
Carrying (Reported) Amount, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Mortgages Notes Payable [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - fixed rate | | | | | | |
Secured debt instruments - fixed rate | 388,878 | | 394,999 | | | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | | | 37,415 | | | |
Carrying (Reported) Amount, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Tax Exempt Notes Payable [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | 27,000 | | 27,000 | | | |
Carrying (Reported) Amount, Fair Value Disclosure [Member] | United Dominion Reality L.P. [Member] | Line of Credit [Member] | Fair Value, Measurements, Recurring [Member] | | | | | | |
Secured debt instruments - fixed rate | | | | | | |
Secured debt instruments - fixed rate | 379,087 | | 370,638 | | | |
Secured debt instruments - variable rate | | | | | | |
Secured debt instruments - variable rate | $142,058 | | $137,187 | | | |
|
[1] | See Note 6, Secured and Unsecured Debt |
[2] | See Note 2, Significant Accounting Policies |
[3] | See Note 5, Debt |
[4] | See Note 8, Derivatives and Hedging Activity |