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Note 4 - Investments In and Advances to Real Estate Joint Ventures - Joint Venture Investments Accounted for Under the Equity Method, Debt Details (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2020 | Dec. 31, 2019
Mortgage and notes payable |  | $ 1,597.7 | $ 1,594.1
Prudential Investment Program [Member] |  |  |
Mortgage and notes payable |  | $ 537.0 | $ 538.1
Weighted average interest rate |  | 2.91% | 3.46%
Weighted average remaining term (Year) | [1] | 43 years 9 months 18 days | 46 years 9 months 18 days
KIR [Member] |  |  |
Mortgage and notes payable |  | $ 561.4 | $ 556.0
Weighted average interest rate |  | 4.15% | 4.39%
Weighted average remaining term (Year) | [1] | 32 months | 28 months 12 days
CPP [Member] |  |  |
Mortgage and notes payable |  | $ 84.9 | $ 84.8
Weighted average interest rate |  | 3.25% | 3.25%
Weighted average remaining term (Year) | [1] | 39 months | 42 months
Other Joint Venture Programs [Member] |  |  |
Mortgage and notes payable |  | $ 414.4 | $ 415.2
Weighted average interest rate |  | 3.62% | 3.87%
Weighted average remaining term (Year) | [1] | 78 months 15 days | 80 months 27 days
[1] | Includes extension options

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