Mortgage Loans Payable	9 Months Ended
Sep. 30, 2011
Mortgage Loans Payable [Abstract]
Mortgage Notes Payable Disclosure [Text Block]	MORTGAGE LOANS PAYABLE In March 2011, Kennedy-Wilson entered into a mortgage loan payable for $5.0 million secured by its 2,700-acre ranch in Hawaii. The note bears interest at the First Hawaiian Bank Prime Rate plus 2.50%, is interest only, and matures in April 2014. The loan was repaid in full in April 2011. In April 2011, Kennedy-Wilson paid off a $2.8 million mortgage loan secured by an office building in Japan. The retired debt had a variable interest rate of the long-term prime lending rate plus 3.50%. In April 2011, Kennedy-Wilson paid down $5.4 million on its mortgage loan related to its pool of loans or notes receivable. In June 2011, as a result of the acquisition of the 100% interest in the office portfolio in Oakland, California, Kennedy-Wilson assumed a mortgage loan with an unpaid principal balance of $22.6 million at a fair value of $17.0 million. Subsequent to the acquisition, the loan was repaid in full through a $12.0 million refinancing and additional funding from Kennedy-Wilson. As of September 30, 2011, the mortgage loan had a carrying value of $12.0 million, bears interest at a fixed rate of 6.75%, is interest only, matures in June 2016, and is secured by the office portfolio.

MORTGAGE LOANS PAYABLE

In March 2011, Kennedy-Wilson entered into a mortgage loan payable for $5.0 million secured by its 2,700-acre ranch in Hawaii. The note bears interest at the First Hawaiian Bank Prime Rate plus 2.50%, is interest only, and matures in April 2014. The loan was repaid in full in April 2011.

In April 2011, Kennedy-Wilson paid off a $2.8 million mortgage loan secured by an office building in Japan. The retired debt had a variable interest rate of the long-term prime lending rate plus 3.50%.

In April 2011, Kennedy-Wilson paid down $5.4 million on its mortgage loan related to its pool of loans or notes receivable.

In June 2011, as a result of the acquisition of the 100% interest in the office portfolio in Oakland, California, Kennedy-Wilson assumed a mortgage loan with an unpaid principal balance of $22.6 million at a fair value of $17.0 million. Subsequent to the acquisition, the loan was repaid in full through a $12.0 million refinancing and additional funding from Kennedy-Wilson. As of September 30, 2011, the mortgage loan had a carrying value of $12.0 million, bears interest at a fixed rate of 6.75%, is interest only, matures in June 2016, and is secured by the office portfolio.