Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue
Total revenue	$ 123.3	$ 140.7
Expenses
General and administrative	9.5	10.9
Depreciation and amortization	45.5	49.1
Total expenses	129.8	153.1
Income from unconsolidated investments	10.9	41.7
Gain on sale of real estate, net	44.2	34.9
Transaction-related expenses	(0.2)	(0.8)
Interest expense	(48.8)	(55.3)
Other income (loss)	0.2	(2.5)
(Loss) income before provision for income taxes	(0.2)	5.6
Provision for income taxes	(5.7)	(4.0)
Net (loss) income	(5.9)	1.6
Net loss (income) attributable to the noncontrolling interests	0.3	(6.9)
Preferred dividends and accretion of preferred stock issuance costs	(4.3)	0.0
Net loss attributable to Kennedy-Wilson Holdings, Inc. common shareholders	$ (9.9)	$ (5.3)
Basic and diluted loss per share
Loss per share (in dollars per share)	$ (0.07)	$ (0.04)
Weighted average shares outstanding (in shares)	140,210,705	139,756,358
Dividends declared per common share (in dollars per share)	$ 0.22	$ 0.21
Rental [Member]
Revenue
Total revenue	$ 107.7	$ 115.8
Expenses
Cost of goods and services	36.7	41.0
Hotel [Member]
Revenue
Total revenue	7.2	15.0
Expenses
Cost of goods and services	6.0	14.6
Sale of Real Estate [Member]
Revenue
Total revenue	0.0	1.1
Expenses
Cost of goods and services	0.0	1.2
Investment Management and Property Services Fees [Member]
Revenue
Total revenue	8.4	8.8
Commission and Marketing [Member]
Expenses
Cost of goods and services	0.7	1.0
Compensation and Related [Member]
Expenses
Cost of goods and services	$ 31.4	$ 35.3