Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net (loss) income	$ (5.9)	$ 1.6
Other comprehensive (loss) income, net of tax:
Unrealized foreign currency translation loss	(16.8)	(18.3)
Amounts reclassified out of AOCI during the period	0.2	0.0
Total other comprehensive (loss) income for the period	(9.2)	14.6
Comprehensive (loss) income	(15.1)	16.2
Comprehensive loss (income) attributable to noncontrolling interests	1.8	(4.6)
Comprehensive income (loss) attributable to Kennedy-Wilson Holdings, Inc.	(13.3)	11.6
Foreign Exchange Contract [Member]
Other comprehensive (loss) income, net of tax:
Unrealized gain (loss)	13.0	32.9
Interest Rate Swap [Member]
Other comprehensive (loss) income, net of tax:
Unrealized gain (loss)	$ (5.6)	$ 0.0