CAPITAL STOCK TRANSACTIONS CAPITAL STOCK TRANSACTIONS (Accumulated Other Comprehensive Income) (Details) (USD $)	12 Months Ended				9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013 Foreign Currency Translation	Dec. 31, 2013 Forward Contract Foreign Currency	Dec. 31, 2013 Foreign Exchange Forward [Member] Japan, Yen Net Investment Hedging [Member] Other Comprehensive Income (Loss) [Member]	Sep. 30, 2012 Foreign Exchange Forward [Member] Euro Member Countries, Euro Net Investment Hedging [Member] Other Comprehensive Income (Loss) [Member]	Dec. 31, 2013 Foreign Exchange Forward [Member] Euro Member Countries, Euro Net Investment Hedging [Member] Other Comprehensive Income (Loss) [Member]	Sep. 30, 2012 Sixteen Million Euros Current Forward Contract Settlement Date June 4, 2015 [Member] Foreign Exchange Forward [Member] Euro Member Countries, Euro Net Investment Hedging [Member] Other Comprehensive Income (Loss) [Member]	Dec. 31, 2013 Sixteen Million Euros Current Forward Contract Settlement Date June 4, 2015 [Member] Foreign Exchange Forward [Member] Euro Member Countries, Euro Net Investment Hedging [Member] Other Comprehensive Income (Loss) [Member]	Sep. 30, 2012 Twenty Million Euros Current Forward Contract Settlement Date May 10, 2016 [Member] Foreign Exchange Forward [Member] United Kingdom, Pounds Net Investment Hedging [Member] Other Comprehensive Income (Loss) [Member]	Dec. 31, 2013 Twenty Million Euros Current Forward Contract Settlement Date May 10, 2016 [Member] Foreign Exchange Forward [Member] United Kingdom, Pounds Net Investment Hedging [Member] Other Comprehensive Income (Loss) [Member]	Dec. 31, 2013 KW Residential LLC [Member]	Dec. 31, 2012 KW Residential LLC [Member]	Dec. 31, 2011 KW Residential LLC [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Estimated Tax Rate	40.00%
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 12,600,000	$ 10,800,000	$ 1,800,000
Other Comprehensive Income (Loss), before Tax	(8,500,000)	(13,700,000)	5,200,000
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	2,800,000	2,800,000	0
Other Comprehensive Income (Loss), Tax	2,300,000	4,400,000	(2,100,000)
Ending balance	9,200,000	4,300,000	4,900,000
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net				12,900,000	(1,200,000)	(7,900,000)	(1,200,000)	(5,300,000)	0	(2,600,000)
Joint Venture, Distributions and Return of Investments on Favorable Hedge Settlement											23,100,000
Settlement of hedges											$ 10,800,000	$ 0	$ 2,100,000