Convertible Subordinate Debt	12 Months Ended
Convertible Subordinate Debt	Dec. 31, 2011
Convertible Subordinated Debt [Abstract]
Subordinated Borrowings Disclosure [Text Block]	CONVERTIBLE SUBORDINATED DEBT In July 2010, Kennedy-Wilson extinguished its convertible subordinated debt with a face value of $30.0 million for $32.5 million. The convertible subordinated debt was originally issued with a beneficial conversion feature and the carrying value of the convertible subordinated debt on the day of extinguishment was $27.7 million, net of the unamortized beneficial conversion of $2.3 million. The intrinsic value of the beneficial conversion feature was measured at $0.1 million on the day of extinguishment and was recorded as a reduction to additional paid in capital. The difference between the extinguishment amount and the carrying value of $4.8 million is included in the accompanying consolidated statement of operations and comprehensive income (loss) as a loss on early extinguishment of debt.

The entire disclosure for borrowings under subordinated debt agreements that qualify as available in computing net capital under SEC's uniform net capital rule, including restrictive covenants, collateral, interest rates and due dates, amounts due by date and amount owed in total.

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