Kennedy-Wilson (KW) 10-Q 12 May 14 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2014	8-May-14
Document and Entity Information [Abstract]	'	'
Entity Registrant Name	'Kennedy-Wilson Holdings, Inc.	'
Entity Central Index Key	'0001408100	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Document Type	'10-Q	'
Document Period End Date	31-Mar-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'
Amendment Flag	'false	'
Entity Common Stock, Shares Outstanding	'	91,683,127

Consolidated_Balance_Sheets_Un

Consolidated Balance Sheets (Unaudited) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Assets	'	'
Cash held by consolidated investments	$1,298.70	$8
Cash and cash equivalents	274.4	170.2
Accounts receivable (including $11.3 and $11.4 of related party)	28.2	16.6
Loans (including $4.1 and $4.1 of related party)	202.2	56.8
Real estate and acquired in place lease values, net of accumulated depreciation and amortization	1,878.90	688.1
Unconsolidated investments	619.7	786.1
Other assets	105.1	73
Total assets	4,407.20	1,798.80
Liabilities	'	'
Accounts payable, accrued expenses and other liabilities	154.7	129.1
Senior notes payable	706.1	409
Investment debt	882.2	401.8
Junior subordinated debentures	40	40
Total liabilities	1,783	979.9
Equity	'	'
Cumulative preferred stock, $0.0001 par value: 1,000,000 shares authorized $1,000 per share liquidation preference	0	0
Common stock, 91,683,127 and 82,592,607 shares issued outstanding as of March 31, 2014 and December 31, 2013	0	0
Additional paid-in capital	984.8	801.3
Accumulated deficit	-39.9	-42.2
Accumulated other comprehensive income	7.7	9.2
Total Kennedy-Wilson Holdings, Inc. shareholders' equity	952.6	768.3
Noncontrolling interests	1,671.60	50.6
Total equity	2,624.20	818.9
Total liabilities and equity	$4,407.20	$1,798.80

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, except Share data, unless otherwise specified
Assets, Current [Abstract]	'	'
Accounts receivable b related parties	$11.30	$11.40
Loans b related parties	$4.10	$4.10
Stockholders' Equity Attributable to Parent [Abstract]	'	'
Common stock, shares issued	91,683,127	82,592,607
Common stock, shares outstanding	91,683,127	82,592,607
Cumulative Preferred Stock Subject to Mandatory Redemption [Member]	'	'
Stockholders' Equity Attributable to Parent [Abstract]	'	'
Preferred stock, par value	$0.00	$0.00
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, liquidation preference per share	$1,000	$1,000

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (Unaudited) (USD $)	3 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Revenue	'		'
Investment management, property services and research fees (includes $7.3 and $8.3 of related party fees)	$13.20		$13.60
Rental and hotel	25.3		6.4
Sale of real estate	11.3		2.4
Loans and other	1.7		0.4
Total revenue	51.5		22.8
Operating expenses	'		'
Commission and marketing	1		0.5
Rental and hotel operating	14.1		3.1
Cost of real estate sold	9.7		1.9
Compensation and related	20.5		13.6
General and administrative	8.2		5.4
Depreciation and amortization	7.3		3.1
Total operating expenses	60.8		27.6
Income from unconsolidated investments	2.8		2.2
Operating loss	-6.5		-2.6
Non-operating income (expense)	'		'
Acquisition-related gains	84.2		9.5
Acquisition-related expenses	-4		0
Interest expense-investment	-5.3		-1.7
Interest expense-corporate	-10.5		-9.7
Other income	0.8		0.2
Income (loss) before (provision for) benefit from income taxes	58.7		-4.3
(Provision for) benefit from income taxes	-8.8		1.7
Net income (loss)	49.9		-2.6
Net (income) loss attributable to the noncontrolling interests	-37.4		1
Preferred dividends and accretion of preferred stock issuance costs	-2		-2
Net (loss) income attributable to Kennedy-Wilson Holdings, Inc. common shareholders	$10.50		($3.60)
Basic earnings per share	'		'
Income (loss) per basic (in dollars per share)	$0.12		($0.06)
Weighted average shares outstanding for basic (in shares)	88,142,576		61,853,258
Diluted earnings per share	'		'
Income (loss) per diluted (in dollars per share)	$0.12		($0.06)
Weighted average shares outstanding for diluted (in shares)	89,422,885	[1]	61,853,258	[1]
Dividends declared per common share (in dollars per share)	$0.09		$0.07
[1]	For the three and three months ended MarchB 31, 2014 and 2013, a total of 11,100,074 and 20,042,192 potentially dilutive securities have not been included in the diluted weighted average shares as they are anti-dilutive. Potentially anti-dilutive securities include preferred stock, warrants, and unvested restricted stock grants.

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Statement of Comprehensive Income [Abstract]	'	'
Net income (loss)	$49.90	($2.60)
Other comprehensive income (loss), net of tax:	'	'
Unrealized foreign currency translation loss	-1.2	-14.4
Amounts reclassified out of AOCI during the period	1.2	0
Unrealized forward contract, foreign currency (loss) gain	-1.5	3.6
Total other comprehensive loss for the period	-1.5	-10.8
Comprehensive income (loss)	48.4	-13.4
Comprehensive (income) loss attributable to noncontrolling interests	-37.4	1
Comprehensive income (loss) attributable to Kennedy-Wilson Holdings, Inc.	$11	($12.40)

Consolidated_Statement_of_Equi

Consolidated Statement of Equity (Unaudited) (USD $)	Total		Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings (Accumulated Deficit) [Member]	Accumulated Other Comprehensive Income [Member]	Noncontrolling Interest [Member]	KWE [Member]	KWE [Member]	KWE [Member]
In Millions, except Share data, unless otherwise specified										Additional Paid-in Capital [Member]	Noncontrolling Interest [Member]
Balance at Dec. 31, 2013	$818.90		$0	$0	$801.30	($42.20)	$9.20	$50.60	'	'	'
Balance, common shares (in shares) at Dec. 31, 2013	82,592,607		'	82,592,607	'	'	'	'	'	'	'
Balance, preferred shares (in shares) at Dec. 31, 2013	'		132,550	'	'	'	'	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'		'	'	'	'	'	'	'	'	'
Issuance of common stock	190.8		'	0	190.8	'	'	'	'	'	'
Issuance of common stock (in shares)	'		'	9,200,000	'	'	'	'	'	'	'
Shares forfeited	0		'	'	'	'	'	'	'	'	'
Shares forfeited (in shares)	'		'	-2,475	'	'	'	'	'	'	'
Repurchase and retirement of common stock	-2.5		'	'	-2.5	'	'	'	'	'	'
Shares retired due to RSG vesting (in shares)	'		'	-107,005	'	'	'	'	'	'	'
Stock compensation expense	1.7		'	'	1.7	'	'	'	'	'	'
Other comprehensive income:	'		'	'	'	'	'	'	'	'	'
Unrealized foreign currency translation, net of tax	0		'	'	'	'	0	'	'	'	'
Unrealized forward contract foreign currency loss, net of tax	-1.5		'	'	'	'	-1.5	'	'	'	'
Preferred stock dividends	-2		'	'	'	-2	'	'	'	'	'
Common stock dividends	-8.2	[1]	'	'	'	-8.2	'	'	'	'	'
Net income	49.9		'	'	'	12.5	'	37.4	'	'	'
Consolidation of noncontrolling interests (Note 4)	167.9		'	'	'	'	'	167.9	'	'	'
Contributions from noncontrolling interests	2.9		'	'	'	'	'	2.9	1,409.10	-6.5	1,415.60
Distributions to noncontrolling interests	-2.8		'	'	'	'	'	-2.8	'	'	'
Balance at Mar. 31, 2014	$2,624.20		'	'	$984.80	($39.90)	$7.70	$1,671.60	'	'	'
Balance, common shares (in shares) at Mar. 31, 2014	91,683,127		'	91,683,127	'	'	'	'	'	'	'
Balance, preferred shares (in shares) at Mar. 31, 2014	'		132,550	'	'	'	'	'	'	'	'
[1]	$0.0001 par value per share, 125,000,000 shares authorized as of MarchB 31, 2014 and 2013, respectively.

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Cash flows from operating activities:	'		'
Net income (loss)	$49.90		($2.60)
Adjustments to reconcile net income to net cash (used in) provided by operating activities:	'		'
Net (gain) loss from sale of real estate	-1.6		-0.8
Acquisition-related gain	-84.2		-9.5
Depreciation and amortization	7.3		3.1
Provision for (benefit from) deferred income taxes	8.8		-1.7
Amortization of deferred loan costs	0.6		0.5
Amortization of discount and accretion of premium on issuance of the senior notes and mortgage loan payable	-0.3		-0.2
Income from unconsolidated investments	-2.8		-2.2
Operating distributions from unconsolidated investments	10.4		8.4
Stock-based compensation	1.7		1.8
Change in assets and liabilities:	'		'
Accounts receivable	-7.5		0.4
Other assets	-0.6		-2.1
Accrued expenses and other liabilities	-18.6		-22.7
Net cash used in operating activities	-36.9		-27.6
Cash flows from investing activities:	'		'
Additions to loans	-158.6		-8.2
Collections of loans	0.2		0
Net proceeds from sale of real estate	10		3.4
Purchases of and additions to real estate	-367.7		-15.6
Proceeds from sale of interest in an entity	0		26.7
Investment in marketable securities	-4.5		0
Distributions from unconsolidated investments	11		28.8
Contributions to unconsolidated investments	67.1		52.1
Net cash used in investing activities	-576.7		-17
Cash flows from financing activities:	'		'
Borrowings under senior notes payable	297.2		0
Borrowings under line of credit	90		35
Repayment of line of credit	-90		-35
Borrowings under investment debt	195.8		0
Repayment of investment debt	-5.5		-0.1
Debt issue costs	-9.6		-0.4
Issuance of common stock	190.8		133.8
Repurchase and retirement of common stock	-2.5		0
Proceeds from the issuance of KWE shares, net	1,350.70		0
Dividends paid	-7.8	[1]	-7.1	[1]
Contributions from noncontrolling interests, excluding KWE	2.9		0
Distributions to noncontrolling interests	-2.8		0
Net cash provided by financing activities	2,009.20		126.2
Effect of currency exchange rate changes on cash and cash equivalents	-0.7		-4.1
Net change in cash and cash equivalents	1,394.90		77.5
Cash and cash equivalents, beginning of period	178.2		120.9
Cash and cash equivalents, end of period	1,573.10		198.4
Supplemental cash flow information:	'		'
Interest	23.5		18.7
Income taxes	0		0
Supplemental disclosure of non-cash investing and financing activities:	'		'
Dividends declared on common stock	$8.20		$0
[1]	Common stock dividends are declared at the end of each quarter and paid in the following quarter. The amount declared and not paid is accrued on the consolidated balance sheet.

Consolidated_Statements_of_Cas1

Consolidated Statements of Cash Flows (Unaudited) (Parenthetical) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2013	Mar. 28, 2013	Mar. 31, 2013	Feb. 28, 2014
		Six Hundred Fifteen Unit Apartment Complex in Northern CA [Member]	Note Receivable Due 2016	KWE [Member]
			Notes Receivable [Member]	Property
			Unit
Contribution of interest percentage in portfolio	'	'	'	50.00%
Number of Properties Held in Portfolio Contributed to New Entity	'	'	'	14
Number of Units in Real Estate Property	'	'	107	'
Equity Method Investment, Ownership Percentage	'	15.00%	'	'
Consolidated Investment, Ownership Percentage	'	94.00%	'	'
Note Receivable, Ownership Percentage Sold	'	'	50.00%	'
Notes Receivable, Decrease from Deconsolidation	$96	'	'	'
Mortgage Loans, Decrease from Deconsolidation	$78.70	'	'	'

Basis_of_Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
BASIS OF PRESENTATION	'
	BASIS OF PRESENTATION
	Kennedy-Wilson Holdings, Inc.’s (together with its wholly owned and controlled subsidiaries, "we," "us," "our," "the Company" or “Kennedy Wilson”) unaudited interim consolidated financial statements have been prepared pursuant to the rules and regulations of the U.S. Securities and Exchange Commission ("SEC"). Certain information and footnote disclosures normally included in the financial statements prepared in accordance with accounting principles generally accepted in the United States ("GAAP") may have been condensed or omitted pursuant to SEC rules and regulations, although we believe that the disclosures are adequate to make their presentation not misleading. In the opinion of Kennedy Wilson, all adjustments, consisting of only normal and recurring items, necessary for a fair presentation of the results of operations for the three months ended March 31, 2014 and 2013 have been included. The results of operations for these periods are not necessarily indicative of results that might be expected for the full year ending December 31, 2014. For further information, your attention is directed to the footnote disclosures found in Kennedy Wilson’s Annual Report on Form 10-K for the year ended December 31, 2013.
	The consolidated financial statements include the accounts of Kennedy Wilson and its wholly owned or controlled subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation. Kennedy Wilson Europe Real Estate Plc (“KWE,” LSE: KWE), a Jersey investment company formed to invest in real estate and real estate-related assets in Europe, closed its initial public offering on the London Stock Exchange during the quarter ended March 31, 2014, raising approximately $1.7 billion in gross proceeds. KWE is externally managed by a wholly-owned subsidiary of the Company incorporated in Jersey pursuant to an investment management agreement.  Due to the terms provided in the investment management agreement, pursuant to the guidance set forth in FASB Accounting Standards Codification Subtopic 810 - Consolidation (“Subtopic 810”), the Company is required to consolidate KWE’s results in its consolidated financial statements.  Additionally, the Company invested $145.2 million of cash and contributed $58.3 million of assets acquired by the Company and owns approximately 12.2% of KWE’s total issued share capital as of March 31, 2014. The Company also consolidates the results of certain joint ventures in its consolidated financial statements that it controls as defined by Subtopic 810.
	In addition, Kennedy Wilson evaluates its relationships with other entities to identify whether they are variable interest entities ("VIEs") as defined in the Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Subtopic 810-10 and to assess whether it is the primary beneficiary of such entities. If the determination is made that Kennedy Wilson is the primary beneficiary, then that entity is included in the consolidated financial statements in accordance with the ASC Subtopic 810-10. The ownership of the other interest holders in consolidated subsidiaries is reflected as noncontrolling interests.
	The preparation of the accompanying consolidated financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions about future events. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported, disclosure about contingent assets and liabilities, and reported amounts of revenues and expenses. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates.

Summary_of_Significant_Account

Summary of Significant Accounting Policies and Adoption of New Accounting Pronouncements	3 Months Ended
	Mar. 31, 2014
Accounting Policies [Abstract]	'
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND ADOPTION OF NEW ACCOUNTING PRONOUNCEMENTS	'
	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND ADOPTION OF NEW ACCOUNTING PRONOUNCEMENTS
	REVENUE RECOGNITION—Performance fees or carried interests are allocated to the general partner, special limited partner or asset manager of Kennedy Wilson's real estate funds and loan pool participations based on the cumulative performance of the funds and loan pools and are subject to preferred return thresholds of the limited partners and participants. At the end of each reporting period, Kennedy Wilson calculates the performance fee that would be due to the general partner, special limited partner or asset manager's interests for a fund or loan pool, pursuant to the fund agreement or participation agreements, as if the fair value of the underlying investments were realized as of such date, irrespective of whether such amounts have been realized. As the fair value of underlying investments varies between reporting periods, it is necessary to make adjustments to amounts recorded as performance fees to reflect either (a) positive performance resulting in an increase in the performance fee allocated to the general partner or asset manager or (b) negative performance that would cause the amount due to Kennedy Wilson to be less than the amount previously recognized as revenue, resulting in a negative adjustment to performance fees allocated to the general partner or asset manager. A majority of the performance fees are recognized in investment management revenue, and substantially all of the carried interest is recognized in income from unconsolidated investments in our consolidated statements of operations. Total performance fees recognized from inception through March 31, 2014 that may be reversed in future periods if there is negative fund or loan pool performance totaled $9.8 million. Performance fees accrued as of March 31, 2014 and December 31, 2013 were $9.8 million and $6.1 million, respectively, and are included in accounts receivable in the accompanying consolidated balance sheet.
	REAL ESTATE ACQUISITIONS—The purchase price of acquired properties is recorded to land, buildings and building improvements and intangible lease value (value of above-market and below-market leases, acquired in-place lease values, and tenant relationships, if any) based on their respective estimated fair values in accordance with Business Combinations ASC Subtopics 805-10. Acquisition-related costs are expensed as incurred.
	The valuations of real estate are based on management estimates of the real estate assets using income and market approaches. The indebtedness securing the real estate are valued, in part, based on third party valuations and management estimates also using an income approach.
	NONCONTROLLING INTERESTS—Noncontrolling interests are reported within equity as a separate component of Kennedy Wilson's equity in accordance with Noncontrolling Interests in Consolidated Financial Statements ASC Subtopic 810-10. Revenues, expenses, gains, losses, net income or loss, and other comprehensive income are reported in the consolidated statements of operations at the consolidated amounts and net income and comprehensive income attributable to noncontrolling interests are separately stated.
	FOREIGN CURRENCIES—The financial statements of subsidiaries located outside the United States are measured using the local currency as the functional currency. The assets and liabilities of these subsidiaries are translated at the rates of exchange at the balance sheet date, and income and expenses are translated at the average monthly rate. The foreign currencies include the euro, the British pound sterling, and the Japanese yen. Cumulative translation adjustments, to the extent not included in cumulative net income, are included in the consolidated statement of equity as a component of accumulated other comprehensive income.
	DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES—All derivative instruments are recognized as either assets or liabilities in the balance sheet at their respective fair values. For derivatives designated in hedging relationships, changes in fair value of cash flow hedges or net investment hedges are recognized in accumulated other comprehensive income, to the extent the derivative is effective at offsetting the changes in the item being hedged until the hedged item affects earnings. Changes in fair value for fair value hedges are recognized in earnings.
	RECENT ACCOUNTING PRONOUNCEMENTS—On April 10, 2014, the Financial Accounting Standards Board issued ASU 2014-08, which amends the definition of discontinued operations and requires additional disclosures for disposal transactions that do not meet the revised discontinued operations criteria. ASU 2014-08 is required to be adopted for fiscal years beginning after December 15, 2014, with early adoption permitted. The Company's early adoption of this pronouncement on January 1, 2014 did not have a material impact on the Company's consolidated financial statements.
	The FASB did not issue any other ASCs during the first three months of 2014 that we expect to be applicable and have a material impact on our financial position or results of operations.
	RECLASSIFICATIONS—Certain balances included in prior year's financial statements have been reclassified to conform with the current year's presentation.

Loans

Loans	3 Months Ended
	Mar. 31, 2014
Receivables [Abstract]	'
LOANS	'
	LOANS
	The following table summarizes Kennedy Wilson's investment in loans at March 31, 2014 and December 31, 2013:
		March 31,		December 31,
	(Dollars in millions)	2014		2013
	Loans	$	198.1	$	52.7
	Loans — related parties	4.1		4.1
	Total loans(1)	$	202.2	$	56.8
	(1) Loans have a weighted average stated interest rate of 3.31% and 6.18% at March 31, 2014 and December 31, 2013, respectively, and maturity dates ranging from May 2014 to February 2017. Effective interest rates are higher as certain note receivables were acquired at a discount.
	During the quarter ended March 31, 2014, Kennedy Wilson acquired for $152.4 million the loans secured by a five-star hotel located in Dublin, Ireland. As of March 31, 2014, due to foreign currency fluctuations, the loans had a balance of $153.6 million and the investment debt balance was $82.5 million, and are consolidated on Kennedy Wilson's consolidated balance sheet.
	Loan income
	Kennedy Wilson recognized interest income on loans of $1.7 million and $0.4 million during the three months ended March 31, 2014 and 2013.

Real_Estate_and_InPlace_Lease_

Real Estate and In-Place Lease Value	3 Months Ended
	Mar. 31, 2014
Real Estate [Abstract]	'
Real Estate and In-Place Lease Value	'
	REAL ESTATE AND IN-PLACE LEASE VALUE
	The following table summarizes the Company's investment in consolidated real estate properties at March 31, 2014 and December 31, 2013:
			March 31,				December 31,
	(Dollars in millions)		2014				2013
	Land		$	424.5			$	187.8
	Buildings		1,264.50				484.1
	Building improvements		18.6				12.7
	In-place lease value		204.1				29.8
			1,911.70				714.4
	Less accumulated depreciation and amortization		(32.8		)		(26.3		)
	Real estate, net		$	1,878.90			$	688.1
	Real property, including land, buildings, and building improvement, are included in real estate and are generally stated at cost. Buildings and building improvements are depreciated on a straight-line method over their estimated lives not to exceed 40 years. Acquired in-place lease values are recorded at their estimated fair value and depreciated over their respective weighted-average lease term.
	Consolidated Acquisitions
	The purchase of property is recorded to land, buildings, building improvements, and intangible lease value (including the value of above-market and below-market leases, acquired in-place lease values, and tenant relationships, if any) based on their respective estimated fair values. The purchase price approximates the fair value of the properties as these acquisitions were transacted with third-party willing sellers. Acquisition-related costs are expensed as incurred.
	During the quarter ended March 31, 2014, the Company acquired the following properties:
	(Dollars in millions)
	Date acquired	Type	Description	Location	Land			Building			Intangible assets			Mortgage loans
	1/20/14	Commercial (1)	Portfolio of 14 commercial, retail, and industrial properties	United Kingdom	$	29.7		$	47.5		$	40.2		$	—
	2/20/14	Hotel	193 room hotel	Western U.S.	1.3			8.3			—			—
	2/28/14	Multifamily	24 apartment units, 2 penthouse units, and 1,000 square feet of retail	Ireland	0.6			15.1			0.4			9.6
	3/28/14	Commercial (2)	26 commercial properties throughout England and Scotland	United Kingdom	54			132			54			—
	3/31/14	Multifamily(3)	281 completed apartments and a partially completed residential block, 725k square feet of commercial space, and 7.4 acres of commercial development land	Ireland	32.7			80.9			1.2			78.9
					$	118.3		$	283.8		$	95.8		$	88.5
	(1) On February 28, 2014, the Company contributed its 50% interest in this portfolio to KWE as part of the Company's investment in KWE's initial public offering.
	(2) This portfolio of properties was acquired by KWE.
	(3) Company entered into a purchase agreement with KWE subsequent to March 31, 2014. See Note 17.
	Consolidation of previously unconsolidated investments
	On March 31, 2014, the Company and one of its equity partners amended existing operating agreements governing six separate joint ventures that hold real estate-related investments located in the U.K. and Ireland.  The Company has an approximate 50% ownership interest in these investments.  These joint ventures were previously accounted for by the Company on an equity method basis.  The amendments to the operating agreements provided control to the Company of these investments. As a result of gaining control, the Company was required to consolidate the assets and liabilities of these properties at fair value in accordance with FASB Accounting Standards Codification 805 - Business Combinations.  As the fair value of our interests in these properties were in excess of their carrying value of their ownership interest, we recorded acquisition-related gains in the accompanying consolidated statement of operations for the quarter ended March 31, 2014 as further detailed below.  See Note 6 - Fair Value Measurements for further detail of the methodology used to determine the fair value of the assets and liabilities acquired in these transactions.
	The following table summarizes the assets and liabilities assumed as a result of gaining control of these properties and the acquisition related gains recognized:
	(Dollars in millions)
	Property	Type	Location	Cash			Real estate and acquired in-place lease values, net			Accounts receivable and other assets			Accounts payable, accrued expenses, and other liabilities			Mortgage loans		Noncontrolling interests		Acquisition related gain
	Three multifamily properties	Multifamily	Ireland	$	3.6		$	248.5		$	0.9		$	5.4		$	114.3	$	66.6	$	37.8
	Two office properties	Commercial	Ireland	4.3			223.9			7.6			4.9			75.2		77.9		32.2
	Two commercial properties and loans secured by real estate	Commercial & Loans	U.K.	9.6			195			5.6			8.1			100.8		62		10.5
				$	17.5		$	667.4		$	14.1		$	18.4		$	290.3	$	206.5	$	80.5
	In addition, during the quarter ended March 31, 2014, the Company foreclosed on a 133,000 square foot retail center and an adjacent 2.4 acre vacant lot in Van Nuys, CA. As a result of the foreclosure, the Company was required to consolidate the assets and liabilities of the retail center at fair value under ASC 805 - Business Combinations and recorded the vacant lot at fair market value. As the fair value of the assets was in excess of the basis in the previously held mortgage notes, the Company recognized a $3.7 million acquisition related gain.
	Pro forma results of operations
	The results of operations of the assets acquired have been included in our consolidated financial statements since the date of their acquisition. The Company’s unaudited pro forma results have been prepared for comparative purposes only and do not purport to be indicative of the results of operations that would have occurred had this acquisition been consummated at the beginning of the periods presented.
	The unaudited pro forma data presented below assumes that the acquisitions during the quarter ended March 31, 2014 occurred as of January 1, 2013.
			Unaudited
			Three Months Ended March 31,
	(Dollars in millions, except for per share data)		2014				2013
	Pro forma revenues		$	72.7			$	34.9
	Pro forma (loss) income from unconsolidated investments		(0.7		)		0.7
	Pro forma net income (loss) attributable to Kennedy-Wilson Holdings, Inc. common shareholders		8.6				(4.3		)
	Pro forma net income (loss) per share:
	Basic		$	0.1			$	(0.07	)
	Diluted		$	0.1			$	(0.07	)

Unconsolidated_Investments

Unconsolidated Investments	3 Months Ended
	Mar. 31, 2014
Equity Method Investments and Joint Ventures [Abstract]	'
Unconsolidated Investments	'
	UNCONSOLIDATED INVESTMENTS
	The Company has unconsolidated investments through real estate related joint ventures and loan pool participations. The following table details its investments in joint ventures and loan pool participations as of March 31, 2014 and December 31, 2013:
			March 31,				December 31,
	(Dollars in millions)		2014				2013
	Investments in joint ventures		$	584.5			$	751.4
	Investments in loan pool participations		35.2				34.7
	Total		$	619.7			$	786.1
	Investments in Joint Ventures
	Kennedy Wilson has a number of joint venture interests, generally ranging from 5% to 50%, that were formed to acquire, manage, develop, and/or sell real estate and invest in loan pools and discounted loan portfolios. Kennedy Wilson has significant influence over these entities, but not control, and accordingly, these investments are accounted for under the equity method.
	Joint Venture Holdings
	As of March 31, 2014 and December 31, 2013, the Company's investment in joint ventures totaled $584.5 million and $751.4 million, respectively.
	The following table details our investments in joint ventures by investment type and geographic location as of March 31, 2014:
	(Dollars in millions)	Multifamily			Commercial			Loan		Residential		Other			Total
	Western U.S.	$	136.9		$	159.2		$	50.7	$	49	$	9.7		$	405.5
	Japan	67.9			—			—		—		—			67.9
	United Kingdom	—			51			—		—		—			51
	Ireland	—			33.3			—		—		—			33.3
	Spain	—			—			—		—		26.8			26.8
	Total	$	204.8		$	243.5		$	50.7	$	49	$	36.5		$	584.5
	The following table details our investments in joint ventures by investment type and geographic location as of December 31, 2013:
	(Dollars in millions)	Multifamily			Commercial			Loan		Residential		Other			Total
	Western U.S.	$	133.3		$	160.3		$	50.3	$	48.7	$	8		$	400.6
	Japan	68.8			—			—		—		—			68.8
	United Kingdom	—			104.5			6.3		—		—			110.8
	Ireland	48.2			96.1			—		—		—			144.3
	Spain	—			—			—		—		26.9			26.9
	Total	$	250.3		$	360.9		$	56.6	$	48.7	$	34.9		$	751.4
	KW Residential LLC
	The Company's largest joint venture investment, KW Residential, LLC ("KWR"), had a balance of $67.9 million and $68.8 million as of March 31, 2014 and December 31, 2013, respectively. KWR is a joint venture investment in a portfolio of 50 apartment buildings comprised of approximately 2,400 units, located primarily in Tokyo and surrounding areas. Kennedy Wilson owns approximately 41% of KWR, not including any promoted interests.
	During the three months ended March 31, 2014 and 2013, the Company recognized $1.0 million and $4.3 million, respectively, in losses from foreign currency translation adjustments, net of hedges from its investment in KWR.
	During the three months ended March 31, 2014 and 2013, the Company received the following cash distributions from its investment in KWR for the settlement of hedges, refinancing of property level debt, and operating distributions:
		Three Months Ended March 31,
	(Dollars in millions)	2014				2013
	Settlement of hedges	$	—			$	10.8
	Refinancing of property level debt	—				1
	Operating distributions	0.4				1.7
	Total	$	0.4			$	13.5
	The cash received as a result of unwinding KWR's hedges will not be realized in the statement of operations until the underlying investment is substantially liquidated.
	As of March 31, 2014 and December 31, 2013, the Company did not have any other joint venture investments which individually exceeded 10% of the investments in the joint venture balance.
	Joint Venture Consolidation
	On March 31, 2014, the Company and one of its equity partners amended existing operating agreements governing investments for six investments in Europe which were accounted for using the equity method. As a result of obtaining control, the joint venture investments were consolidated as of March 31, 2014. The investments are presented as an unconsolidated investment for prior periods. See Note 4.
	Contributions to Joint Ventures
	During the three months ended March 31, 2014, Kennedy Wilson made $71.1 million in contributions to new and existing joint venture investments.
	See the table below for a breakdown of contributions to new joint venture investments for the three months ended March 31, 2014:
		Multifamily						Commercial
	(Dollars in millions)	Amount			No. of Properties			Amount		No. of Properties		Total			No. of Properties
	Western U.S.	$	4		1			$	—	—		$	4		1
	United Kingdom(1)	—			—			57.2		14		57.2			14
	Total contributions - new joint venture investments	$	4		1			$	57.2	14		$	61.2		15
	(1)Kennedy Wilson's contribution in a joint venture investment that was subsequently contributed into KWE as part of its initial investment. See note 1.
	In addition to the capital contributions above Kennedy Wilson contributed $9.9 million to existing joint ventures to fund our share of a development project and for working capital needs.
	Distributions from Joint Ventures
	During the three months ended March 31, 2014, Kennedy Wilson received $17.3 million in operating and investing distributions from its joint ventures. Investing distributions resulted from the refinancing of property level debt and asset sales. Operating distributions resulted from operating cash flow generated by the joint venture investments.
	The following table details cash distributions by investment type and geographic location for the three months ended March 31, 2014:
		Multifamily						Commercial				Residential and Other						Total
	(Dollars in millions)	Operating			Investing			Operating		Investing		Operating			Investing			Operating		Investing
	Western U.S.	$	2.3		$	1.5		$	1.5	—		0.8			$	1.9		$	4.6	$	3.4
	Japan	0.4			—			—		—		—			—			0.4		—
	United Kingdom	—			—			2.3		4.4		—			—			2.3		4.4
	Ireland	—			—			1.2		—		—			—			1.2		—
	Spain	—			—			—		—		—			1			—		1
	Total	$	2.7		$	1.5		$	5	$	4.4	$	0.8		$	2.9		$	8.5	$	8.8
	Variable Interest Entities
Kennedy Wilson has determined that it has investments in five variable interest entities ("VIEs") as of March 31, 2014 and has concluded that Kennedy Wilson is not the primary beneficiary of any of the investments. As of March 31, 2014, the five VIEs had assets totaling $184.9 million with Kennedy Wilson’s exposure to loss as a result of its interests in these VIEs totaling $71.1 million related to its equity contributions.
The Company determines the appropriate accounting method with respect to all investments that are not VIEs based on the control-based framework (controlled entities are consolidated) provided by the consolidations guidance in ASC Topic 810. The Company's determination considers specific factors cited under ASC 810-20 "Control of Partnerships and Similar Entities" which presumes that control is held by the general partner (and managing member equivalents in limited liability companies). Limited partners' substantive participation rights may overcome this presumption of control. The Company accounts for joint ventures it is deemed not to control using the equity method of accounting while controlled entities are consolidated.
Capital Commitments
As of March 31, 2014, Kennedy Wilson has unfulfilled capital commitments totaling $12.5 million to four of its joint ventures. We may be called upon to contribute additional capital to joint ventures in satisfaction of Kennedy Wilson capital commitment obligations.
Guarantees
Kennedy Wilson has certain guarantees associated with loans secured by consolidated assets or assets held directly or in various joint ventures. As of March 31, 2014, the maximum potential amount of future payments (undiscounted) Kennedy Wilson could be required to make under the guarantees was approximately $62.6 million which is approximately 1% of investment level debt of the Company. The guarantees expire through 2021, and Kennedy Wilson’s performance under the guarantees would be required to the extent there is a shortfall upon liquidation between the principal amount of the loan and the net sale proceeds from the property. Based upon Kennedy Wilson’s evaluation of guarantees under ASC Subtopic 460-10 "Estimated Fair Value of Guarantees," the estimated fair value of guarantees made as of March 31, 2014 and December 31, 2013 is immaterial.
Investments in loan pool participation
As of March 31, 2014 and December 31, 2013, the Company's investment in loan pool participations totaled $35.2 million and $34.7 million, respectively.
The following table represents the demographics of the Company's investment in the loan pools including the initial UPB and the UPB as of March 31, 2014.
(Dollars in millions)				Kennedy Wilson Ownership		Unpaid Principal Balance						Kennedy Wilson Initial Equity Invested				Investment Balance at March 31, 2014			Expected Accretion Over Total Estimated Collection Period
Acquisition Date		Location				Initial(1)			March 31, 2014(1)												Accreted to Date
February 2010(2)		Western U.S.		15.00%		$	342.4		$	—		$	11.1			$	0.6		$	4.6	$	4.6
Dec-11		United Kingdom		12.50%		2,174.60			31.8			61.2				—			19.2		19.2
Apr-12		Western U.S.		75.00%		43.4			2.8			30.9				2.3			4.3		3.9
Aug-12		Ireland		10.00%		496.6			347.6			7				8.4			1.7		0.6
Dec-12		United Kingdom		5.00%		646.7			150.1			19.3				4.4			4		2.2
Apr-13		United Kingdom		10.00%		193.8			131.6			13				11			3.2		0.9
Aug-13		United Kingdom		20.00%		142.1			142.1			7.5				8.5			4.4		0.8
Total						$	4,039.60		$	806		$	150			$	35.2		$	41.4	$	32.2
(1) Estimated foreign exchange rate is £0.60 =1 USD and €0.73 =1 USD.
(2) Equity invested represents guarantee claims against note holders in loan pool.
The following table presents the income from unconsolidated investments for loan pools and foreign currency gain and (loss) recognized by Kennedy Wilson during the three months ended March 31, 2014 and 2013 for the loan pools that were outstanding:
	Three Months Ended March 31,
(Dollars in millions)	2014				2013
Income from unconsolidated investments	$	2.1			$	2.5
Foreign currency translation gain (loss)	0.2				(3.9		)
Total	$	2.3			$	(1.4	)

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
FAIR VALUE MEASUREMENTS	'
	FAIR VALUE MEASUREMENTS
	The following table presents fair value measurements (including items that are required to be measured at fair value and items for which the fair value option has been elected) as of March 31, 2014:
	(Dollars in millions)	Level 1				Level 2			Level 3			Total
	Marketable securities	$	8.5			$	—		$	—		$	8.5
	Unconsolidated investments	—				—			82			82
	Currency forward contract	—				(11.2		)	—			(11.2		)
	Total	$	8.5			$	(11.2	)	$	82		$	79.3
	The following table presents fair value measurements (including items that are required to be measured at fair value and items for which the fair value option has been elected) as of December 31, 2013:
	(Dollars in millions)	Level 1				Level 2			Level 3			Total
	Marketable securities	$	4			$	—		$	—		$	4
	Unconsolidated investments	—				—			81.1			81.1
	Currency forward contract	—				(9.6		)	—			(9.6		)
	Total	$	4			$	(9.6	)	$	81.1		$	75.5
	Investments in joint ventures
	Kennedy Wilson records its investments in KW Property Fund III, L.P., Kennedy Wilson Real Estate Fund IV, L.P., and SG KW Venture I, LLC (the "Funds") based upon the net assets that would be allocated to its interests in the Funds assuming the Funds were to liquidate their investments at fair value as of the reporting date. Kennedy Wilson’s investment balance in the Funds was $34.5 million and $33.5 million at March 31, 2014 and December 31, 2013, respectively, which is included in unconsolidated investments in the accompanying consolidated balance sheets. As of March 31, 2014, Kennedy Wilson had unfunded capital commitments to the Funds in the amount of $5.4 million.
	Kennedy Wilson elected to use the fair value option ("FV Option") for two unconsolidated investment entities to more accurately reflect the timing of the value created in the underlying investments and report those results in current operations. Kennedy Wilson's investment balance in the FV Option investments was $47.5 million and $47.6 million at March 31, 2014 and December 31, 2013, respectively, which are included in unconsolidated investments in the accompanying balance sheets.
	The following table summarizes our investments in unconsolidated investments held at fair value by type:
	(Dollars in millions)	31-Mar-14				31-Dec-13
	Funds	$	34.5			$	33.5
	FV Option	47.5				47.6
	Total	$	82			$	81.1
	The following table presents changes in Level 3 investments for the three months ended March 31, 2014 and 2013:
		Three Months Ended March 31,
	(Dollars in millions)	2014				2013
	Beginning balance	$	81.1			$	68.4
	Unrealized and realized gains	—				—
	Unrealized and realized losses	—				—
	Contributions	1.3				0.2
	Distributions	(0.4		)		(0.2		)
	Ending balance	$	82			$	68.4
	The change in unrealized and realized gains and losses is included in income from unconsolidated investments in the accompanying statements of operations.
	There was no material change in unrealized gains and losses on Level 3 investments during the three months ended March 31, 2014 and 2013 for investments still held as of March 31, 2014.
	In estimating fair value of real estate held by the Funds and the two FV Option investments, Kennedy Wilson considers significant unobservable inputs such as capitalization and discount rates. The table below describes the range of unobservable inputs for real estate assets:
		Estimated Rates Used for
		Capitalization Rates		Discount Rates
	Office	6.00% - 7.50%		7.00% - 9.75%
	Retail	6.00% - 10.00%		9.00% - 12.00%
	Hotel	6.50%		8.00%
	Multifamily	5.75% - 6.75%		7.50% - 9.00%
	Loan	n/a		1.75% - 12.00%
	Land and condominium units	n/a		8.00% - 12.00%
	In valuing real estate, related assets and indebtedness, Kennedy Wilson considers significant inputs such as the term of the debt, value of collateral, market loan-to-value ratios, market interest rates and spreads, and credit quality of investment entities. The credit spreads used by Kennedy Wilson for these types of investments range from 1.75% to 12.00%.
	The accuracy of estimating fair value for investments utilizing unobservable inputs cannot be determined with precision and cannot be substantiated by comparison to quoted prices in active markets. As such, estimated fair value may not be realized in a current sale or immediate settlement of the asset or liability. Additionally, there are inherent uncertainties in any fair value measurement technique, and changes in the underlying assumptions used, including cap rates, discount rates, liquidity risks, and estimates of future cash flows, could significantly affect the fair value measurement amounts.
	Currency forward contracts
	Kennedy Wilson has currency forward contracts to manage its exposure to currency fluctuations between its functional currency (U.S. dollars) and the functional currency (euros and GBP) of certain of its wholly-owned subsidiaries. To accomplish this objective, Kennedy Wilson hedged these exposures by entering into currency forward contracts to partially hedge Kennedy Wilson's exposure to its net investment in certain foreign operations caused by currency fluctuations. The currency forward contracts are valued based on the difference between the contract rate and the forward rate at maturity of the foreign currency applied to the notional value in that foreign currency discounted at a market rate for similar risks. Although Kennedy Wilson has determined that the majority of the inputs used to value its derivative fall within Level 2 of the fair value hierarchy, the counterparty risk adjustments associated with the derivative utilize Level 3 inputs. However, as of March 31, 2014, Kennedy Wilson assessed the significance of the impact of the counterparty valuation adjustments on the overall valuation of its derivative positions and determined that the counterparty valuation adjustments are not significant to the overall valuation of its derivative. As a result, Kennedy Wilson has determined that its derivative valuation in its entirety be classified in Level 2 of the fair value hierarchy.
	Changes in fair value are recorded in other comprehensive income in the accompanying consolidated statements of comprehensive income (loss) as the portion of the currency forward contract used to hedge currency exposure of its certain wholly owned subsidiaries qualifies as a net investment hedge under ASC Topic 815. The fair value of the derivative instruments held as of March 31, 2014 are included in accrued expenses and other liabilities on the balance sheet. See note 12 for a complete discussion on other comprehensive income including currency forward contracts and foreign currency translations.
	The table below details the currency forward contracts Kennedy Wilson had as of March 31, 2014:
	(Dollars in millions)								Change in Unrealized Gains (Losses)
	Currency	Notional Amount	Trade Date	Settlement Date	Exchange Rate	Fair Value			Three Months Ended March 31, 2014
	Euro	€ 129.30	5/31/2012 - 3/18/2014	8/12/2014 - 12/19/2016	1.2400 - 1.3925	$	(6.9	)	$	0.1
	GBP	£95.5	8/23/2013 - 2/25/2014	8/28/2014 - 2/27/2019	1.5479 - 1.6371	(4.3		)	(1.7		)
	Total					$	(11.2	)	$	(1.6	)
	In order to manage currency fluctuations between the Company's functional currency (U.S. dollar) and the functional currency of KWR's functional currency (Japanese yen), the Company entered into forward foreign currency contracts to hedge a portion of its net investment in KWR. During the three months ended March 31, 2014, the Company recognized $0.8 million gross unrealized losses related to these hedges.
	Fair value of financial instruments
	The carrying amounts of cash and cash equivalents, accounts receivable including related party receivables, accounts payable, accrued expenses and other liabilities, accrued salaries and benefits, and deferred and accrued income taxes approximate fair value due to their short-term maturities. The carrying value of notes receivable (excluding related party notes receivable as they are presumed not to be an arm’s length transaction) approximates fair value as the terms are similar to loans with similar characteristics available in the market.
	The Company accounts for its debt liabilities at face value plus net unamortized debt premiums and any fair value adjustments as part of business combinations. The fair value as of March 31, 2014 and December 31, 2013 for the senior notes payable, borrowings under lines of credit, investment debt and junior subordinated debentures were estimated to be approximately $1,662.8 million and $878.2 million, respectively, based on a comparison of the yield that would be required in a current transaction, taking into consideration the risk of the underlying collateral and our credit risk to the current yield of a similar security, compared to their carrying value of $1,628.3 million and $850.8 million at March 31, 2014 and December 31, 2013, respectively.

Other_Assets

Other Assets	3 Months Ended
	Mar. 31, 2014
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]	'
OTHER ASSETS	'
	OTHER ASSETS
	Other assets consist of the following:
	(Dollars in millions)	March 31, 2014		31-Dec-13
	Goodwill	23.9		23.9
	Loan fees, net of accumulated amortization of $5.2 million and $4.5 million at	22.9		14.1
	March 31, 2014 and December 31, 2013, respectively
	Above-market leases	19.4		—
	Deposits and other, net of accumulated amortization of $1.5 million and	11.8		13
	$1.2 million at March 31, 2014 and December 31, 2013, respectively
	Office furniture and equipment net of accumulated depreciation of $2.5 million and	9.6		10.4
	$2.2 million at March 31, 2014 and December 31, 2013, respectively
	Prepaid expenses	9		7.6
	Marketable securities	8.5		4
	Other Assets	$	105.1	$	73

Investment_Debt

Investment Debt	3 Months Ended
	Mar. 31, 2014
Debt Disclosure [Abstract]	'
INVESTMENT DEBT	'
	INVESTMENT DEBT
	Investment debt at March 31, 2014 and December 31, 2013 consist of the following:
	(Dollars in millions)			Carrying Amount of Investment Debt as of (1)
	Types of Property Pledged as Collateral	Region		March 31,		December 31,
				2014		2013
	Multifamily properties (1)	Western U.S.		$	260.2	$	261
	Commercial buildings	Western U.S.		128.2		110.4
	Residential	Western U.S		30		28
	Commercial	Japan		2.4		2.4
	Commercial (1)	Ireland		75.2		—
	Multifamily (1)	Ireland		202.8		—
	Notes Receivable (1)	Ireland		82.5		—
	Commercial (1)	United Kingdom		94.9		—
	Notes Receivable (1)	United Kingdom		6		—
	Investment debt(2)			$	882.2	$	401.8
	(1) The investment debt balances include the unamortized debt premiums. Debt premiums represent the excess of the fair value of debt over the principal value of debt assumed in various acquisitions and are amortized into interest expense over the remaining term of the related debt in a manner that approximates the effective interest method. The unamortized loan premium as of March 31, 2014 and December 31, 2013 was $12.9 million and $5.3 million, respectively.
	(2) The investment debt had a weighted average interest rate of 4.35% and 4.13% at March 31, 2014 and December 31, 2013.
	During the three months ended March 31, 2014, seven mortgage loans secured by three apartment buildings and an office building in Ireland, and a retail center, office building, and loans in the United Kingdom were consolidated. See footnote 4 for further discussion. Additionally, during the three months ended March 31, 2014, the acquisition of a retail center in North Hollywood, CA, two apartment buildings in Ireland, and a note receivable in Ireland, were partially financed with mortgages. See note 4 for more detail on the acquisitions and the investment debt.
	The aggregate maturities of investment debt subsequent to March 31, 2014 are as follows:
	(Dollars in millions)
	2014	$	26.9
	2015	118.7
	2016	51.8
	2017	146.7
	2018	86.7
	Thereafter	438.5
		869.3
	Debt premium	12.9
		$	882.2

Senior_Notes

Senior Notes	3 Months Ended
	Mar. 31, 2014
Debt Disclosure [Abstract]	'
SENIOR NOTES	'
	SENIOR NOTES
				March 31, 2014							December 31, 2013
	(Dollars in millions)					Unamortized							Unamortized
		Interest Rate	Maturity Date	Face Value		Net Premium/(Discount)			Carrying Value		Face Value		Net Premium/(Discount)		Carrying Value
	2042 Notes	7.75%	12/1/42	$	55	$	—		$	55	$	55	$	—	$	55
	2024 Notes	5.88%	4/1/24	300		(2.8		)	297.2		—		—		—
	2019 Notes	8.75%	4/1/19	350		3.9			353.9		350		4		354
	Senior Notes			$	705	$	1.1		$	706.1	$	405	$	4	$	409
	In March 2014, Kennedy Wilson completed a public offering of $300.0 million aggregate principal amount of 5.875% Senior Notes, due 2024. The 2024 notes were issued and sold at a public offering price of 99.068% of their principal amount by Kennedy-Wilson, Inc. (the “Issuer”), a wholly owned subsidiary of Kennedy Wilson.
	The indentures governing the 2019 Notes, 2024 Notes, and 2042 Notes contain various restrictive covenants, including, among others, limitations on our ability and the ability of certain of our subsidiaries to incur or guarantee additional indebtedness, to make restricted payments, pay dividends or make any other distributions from restricted subsidiaries, redeem or repurchase capital stock, sell assets or subsidiary stock, engage in transactions with affiliates, create or permit liens on assets, enter into sale/leaseback transactions, and enter into consolidations or mergers. The indentures limit Kennedy-Wilson, Inc.'s ability and the ability of its restricted subsidiaries to incur additional indebtedness if, on the date of such incurrence and after giving effect to the new indebtedness, the maximum balance sheet leverage ratio (as defined in the indenture) is greater than 1.50 to 1.00. This ratio is measured at the time of incurrence of additional indebtedness. As of March 31, 2014, the balance sheet leverage ratio was 0.78 to 1.00. See Note 18 for the guarantor and non-guarantor financial statements.

Line_of_Credit

Line of Credit	3 Months Ended
	Mar. 31, 2014
Debt Disclosure [Abstract]	'
LINE OF CREDIT	'
	LINE OF CREDIT
	In September 2013, Kennedy-Wilson, Inc. amended its existing unsecured revolving credit facility with U.S. Bank and East-West Bank and added Bank of Ireland which increased the total principal amount available to be borrowed by an additional $40.0 million, for an aggregate availability of $140.0 million. The loan bears interest at a rate equal to LIBOR plus 2.75% and the maturity date was extended to October 1, 2016. The revolving loan agreement that governs the unsecured credit facility requires Kennedy-Wilson, Inc. to maintain (i) a minimum rent, adjusted fixed charge coverage ratio (as defined in the revolving loan agreement) of not less than 1.50 to 1.00, measured on a four quarter rolling average basis and (ii) maximum balance sheet leverage (as defined in the revolving loan agreement) of not greater than 1.50 to 1.00, measured at the end of each calendar quarter; (iii) an effective tangible net worth (as defined in the revolving loan agreement) equal to or greater than $250.0 million, measured at the end of each calendar quarter; and (iv) unrestricted cash, cash equivalents and publicly traded marketable securities in the aggregate amount of at least $40.0 million.
	As of March 31, 2014, Kennedy-Wilson, Inc.'s adjusted fixed charge coverage ratio was 3.01 to 1.00, its balance sheet leverage ratio was 0.82 to 1.00, and its effective tangible net worth and its unrestricted cash, cash equivalents and publicly traded marketable securities were $905.7 million and $1.6 billion, respectively, and Kennedy-Wilson, Inc. was in compliance with these covenants. The revolving loan agreement also provides that any subsidiary guarantors under our 2019 Notes and 2042 Notes must provide guarantees of the loans drawn on our unsecured revolving credit facility.  See Note 9 for a discussion of our senior notes.
	During the three months ended March 31, 2014, the Company drew and repaid $90.0 million on its unsecured credit facility to fund acquisitions. The maximum amount drawn on the unsecured credit facility at any one point during the three months ended March 31, 2014 was $90.0 million. As of March 31, 2014, the unsecured credit facility was undrawn and $140.0 million was still available.

Junior_Subordinated_Debentures

Junior Subordinated Debentures	3 Months Ended
	Mar. 31, 2014
Debt Disclosure [Abstract]	'
JUNIOR SUBORDINATED DEBENTURES	'
	JUNIOR SUBORDINATED DEBENTURES
	In 2007, Kennedy Wilson issued junior subordinated debentures in the amount of $40.0 million. The debentures were issued to a trust established by Kennedy Wilson, which contemporaneously issued $40.0 million of trust-preferred securities to Merrill Lynch International. The interest rate on the debentures is fixed for the first ten years at 9.06%, and variable thereafter at LIBOR plus 3.70%. Interest is payable quarterly, with the principal due in 2037. Kennedy Wilson may redeem the debentures, in whole or in part, on any interest payment date at par.
	The junior subordinated debentures require Kennedy-Wilson, Inc. to maintain (i) a fixed charge coverage ratio (as defined in the indenture governing the junior subordinated debentures) of not less than 1.75 to 1.00, measured on a four-quarter rolling basis; (ii) a ratio of total debt to net worth (as defined in the indenture) of not greater than 3.00 to 1.00 at any time; (iii) a tangible net worth (as defined in the indenture) not less than the sum of (x) $15.0 million, plus (y) 60% of any net income (but only if a positive number) for each completed fiscal quarter beginning with the fiscal quarter ended March 31, 2007 until such time as our net worth equals or exceeds $75.0 million and then 50% of any net income for each completed fiscal quarter thereafter, plus (z) 50% of all proceeds of equity interests issued by us or our subsidiaries after the date the debentures were issued; and (iv) a net worth (as defined in the indenture) not less than the sum of (x) $40.0 million, plus (y) 60% of any net income (but only if a positive number) for each completed fiscal quarter beginning with the fiscal quarter ended March 31, 2007 until such time as our net worth equals or exceeds $75.0 million and then 50% of any net income for each completed fiscal quarter thereafter, plus (z) 50% of all proceeds of equity interests issued by us or our subsidiaries after the date the debentures were issued. As of March 31, 2014, Kennedy Wilson's fixed charge coverage ratio was 3.64 to 1.00, its ratio of total debt to net worth was 1.71 to 1.00 and its tangible net worth and net worth were $901.9 million and $952.5 million, respectively, and Kennedy Wilson was in compliance with these covenants.

Stockholders_Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2014
Equity [Abstract]	'
STOCKHOLDERS' EQUITY	'
	STOCKHOLDERS' EQUITY
	Common Stock
	In January 2014, Kennedy Wilson completed an offering of 9.2 million shares of its common stock, which raised $190.8 million of net proceeds.
	Dividend Distributions
	During the following periods, Kennedy Wilson declared and paid the following cash distributions on its common and preferred stock:
		Three Months Ended March 31, 2014						Three Months Ended March 31, 2013
	(Dollars in millions)	Declared			Paid			Declared			Paid
	Preferred Stock
	Series A (1)	$	1.5		$	1.5		$	1.5		$	1.5
	Series B (2)	0.5			0.5			0.5			0.5
	Total Preferred Stock	2			2			2			2
	Common Stock (3)	8.2			5.8			5.1			5.1
	Total (4)	$	10.2		$	7.8		$	7.1		$	7.1
	(1) 6.00% Series A, 100,000 shares issued and outstanding as of March 31, 2014 and 2013, respectively, mandatorily convertible on May 19, 2015.
	(2) 6.45% Series B, 32,550 shares issued and outstanding as of March 31, 2014 and 2013, respectively, mandatorily convertible on November 3, 2018.
	(3) $0.0001 par value per share, 125,000,000 shares authorized as of March 31, 2014 and 2013, respectively.
	(4) Common stock dividends are declared at the end of each quarter and paid in the following quarter. The amount declared and not paid is accrued on the consolidated balance sheet.
	Stock-based Compensation
	During the three months ended March 31, 2014 and 2013, Kennedy Wilson recognized $1.7 million and $1.8 million, respectively, of compensation expense related to the vesting of previously issued restricted stock grants.
	Accumulated Other Comprehensive Income
	The following table summarizes the changes in each component of accumulated other comprehensive income (loss), net of 40% estimated tax:
		Foreign Currency Translation			Forward Contract Foreign Currency			Total Accumulated Other Comprehensive Income
	(Dollars in millions)
	Balance at December 31, 2013	$	4.3		$	4.9		$	9.2
	Unrealized losses, arising during the period	(1.2		)	(2.4		)	(3.6		)
	Amounts reclassified out of AOCI during the period	1.2			—			1.2
	Taxes on unrealized losses, arising during the period	—			0.9			0.9
	Balance at March 31, 2014	$	4.3		$	3.4		$	7.7
	The local currencies for our interests in foreign operations include the euro, the British pound sterling, and the Japanese yen. The related amounts on our balance sheets are translated into U.S. dollars at the exchange rates at the respective financial statement date, while amounts on our statements of operations are translated at the average exchange rates during the respective period. The increase in the unrealized losses on foreign currency translation is a result of the weakening of the U.S. dollar against the euro, the British pound and the Japanese yen during the quarter ended March 31, 2014.
	In order to manage currency fluctuations, the Company entered into forward foreign currency contracts to hedge a portion of its Japanese yen-based investments. During the three months ended March 31, 2014, the Company recognized a gross unrealized loss of $0.8 million related to these hedges. Kennedy Wilson also has a currency forward contract to manage its exposure to currency fluctuations between its functional currency (U.S. dollars) and the functional currency (euros and GBP) of certain of its wholly-owned subsidiaries (see note 7 for more detail). During the three months ended March 31, 2014, the Company recognized a gross unrealized gain of $0.1 million related to its hedges on the euro and a gross unrealized loss of $1.7 million related to its hedges on the Great Britain pound.
	Noncontrolling Interests
	Noncontrolling interests consist of the ownership interests of noncontrolling shareholders in consolidated subsidiaries,
	and are presented separately on the balance sheet. As of March 31, 2014 and December 31, 2013 the Company has noncontrolling interest of $1.7 billion and $50.6 million, respectively.
	The Company currently owns approximately 12.2% of KWE’s total issued share capital as of March 31, 2014.  Due to the terms provided in the investment management agreement between KWE and a wholly-owned subsidiary of the Company, the Company consolidates KWE’s results in its consolidated financial statements.  See Note 1 for additional details.  During the quarter ended March 31, 2014, the Company recorded a $1.4 billion increase to non-controlling interest, net of issuance costs, relating to the equity of the noncontrolling shareholders of KWE.  The Company’s share of the issuance costs was $6.5 million.
	As further discussed in Note 4, the Company was required to consolidate the assets and liabilities of six operating properties and recorded an increase of $167.9 million to noncontrolling interest relating to the equity of the noncontrolling shareholders of these properties. See note 4.

Earnings_Per_Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
EARNINGS PER SHARE	'
	EARNINGS PER SHARE
	Under FASB ASC 260-10-45, Earnings Per Share, the Company uses the two-class method to calculate earnings per share. Basic earnings per share is calculated based on dividends declared (“distributed earnings”) and the rights of common shares and participating securities in any undistributed earnings, which represents net income remaining after deduction of dividends declared during the period. Participating securities, which include unvested restricted stock, are included in the computation of earnings per share pursuant to the two-class method. The undistributed earnings are allocated to all outstanding common shares and participating securities based on the relative percentage of each security to the total number of outstanding securities. Basic earnings per common share and participating securities represent the summation of the distributed and undistributed earnings per common share and participating security divided by the total weighted average number of common shares outstanding and the total weighted average number of participating securities outstanding during the respective periods. Kennedy Wilson only presents the earnings per share attributable to the common shareholders.
	Net losses, after deducting the dividends to participating securities, are allocated in full to the common shares since the participating security holders do not have an obligation to share in the losses, based on the contractual rights and obligations of the participating securities. Because we incurred losses for the three months ended March 31, 2013, all potentially dilutive instruments are anti-dilutive and have been excluded from our computation of weighted average dilutive shares outstanding for that period. Kennedy Wilson declared quarterly dividends to common stockholders in the three months ended March 31, 2014 and 2013 of $0.09 and $0.07 per common share, respectively. The following is a summary of the elements used in calculating basic and diluted income (loss) per share for the three months ended March 31, 2014 and 2013:
		Three Months Ended March 31,
	(Dollars in millions, except share and per share amounts)	2014			2013
	Net income (loss) attributable to Kennedy-Wilson Holdings, Inc. common shareholders	$	10.5		$	(3.6	)
	Allocation to participating securities:
	Net income allocated to participating securities	—			—
	Dividends declared on participating securities	(0.2		)	(0.3		)
	Net income (loss) attributable to Kennedy-Wilson Holdings, Inc. common shareholders, net of allocation to participating securities	10.3			(3.9		)
	Dividends declared on common shares	(8.0		)	(4.8		)
	Undistributed earnings attributable to Kennedy-Wilson Holdings, Inc. common shareholders, net of allocation to participating securities	$	2.3		$	(8.7	)
	Distributed earnings per share	$	0.09		$	0.07
	Undistributed earnings per share	0.03			(0.13		)
	Income (loss) per basic	0.12			(0.06		)
	Income (loss) per diluted	$	0.12		$	(0.06	)
	Weighted average shares outstanding for basic	88,142,576			61,853,258
	Weighted average shares outstanding for diluted(1)	89,422,885			61,853,258
	Dividends declared per common share	$	0.09		$	0.07
	(1) For the three and three months ended March 31, 2014 and 2013, a total of 11,100,074 and 20,042,192 potentially dilutive securities have not been included in the diluted weighted average shares as they are anti-dilutive. Potentially anti-dilutive securities include preferred stock, warrants, and unvested restricted stock grants.

Segment_Information

Segment Information	3 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
SEGMENT INFORMATION	'
	SEGMENT INFORMATION
	Kennedy Wilson's business is defined by two core segments: KW Investments and KW Services. KW Investments invests in multifamily, residential and commercial properties as well as loans secured by real estate. KW Services provides a full array of real estate-related services to investors and lenders, with a strong focus on financial institution-based clients. Kennedy Wilson’s segment disclosure with respect to the determination of segment profit or loss and segment assets is based on these services and investments.
	There have been no changes in the basis of segmentation or in the basis of measurement of segment profit or loss since the December 31, 2013 financial statements.
	KW INVESTMENTS—Kennedy Wilson invests its capital in real estate assets and loans secured by real estate either on its own or with strategic partners through joint ventures, separate accounts, and commingled funds. We are typically the general partner in these joint ventures with a promoted interest in the profits of our investments beyond our ownership percentage. The Company has an average ownership interest across all investments of approximately 34%. Our equity partners include financial institutions, foundations, endowments, high net worth individuals and other institutional investors.
	KW SERVICES—KW Services offers a comprehensive line of real estate services for the full lifecycle of real estate ownership to clients that include financial institutions, institutional investors, insurance companies, developers, builders and government agencies. KW Services has four main lines of business: investment management, property services, research and auction and conventional sales. These four business lines generate revenue for us through fees and commissions. Related party fee revenue primarily consists of fees earned on investments in which Kennedy Wilson also has an ownership interest.
	We manage over 68 million square feet of properties for institutional clients and individual investors in the United States, Europe, and Japan, which includes assets we have ownership in and third party assets. With 24 offices throughout the United States, the United Kingdom, Ireland, Spain and Japan, we have the capabilities and resources to provide property services to real estate owners as well as the experience, as a real estate investor, to understand client concerns. The managers of KW Services have an extensive track record in their respective lines of business and the real estate community as a whole. Their knowledge and relationships is an excellent driver of business through the services business as well as on the investment front.
	Additionally, KW Services plays a critical role in supporting the company's investment strategy by providing local market intelligence and real-time data for evaluating investments, generating proprietary transaction flow and creating value through efficient implementation of asset management or repositioning strategies.
	The following tables summarize Kennedy Wilson’s income activity by segment and corporate for the three months ended March 31, 2014 and 2013 and balance sheet data as of March 31, 2014 and December 31, 2013:
		Three Months Ended March 31,
	(Dollars in millions)	2014			2013
	Investments
	Rental and hotel	$	25.3		$	6.4
	Sale of real estate	11.3			2.4
	Loan and other	1.7			0.4
	Total revenue	38.3			9.2
	Operating expenses	(36.1		)	(12.3		)
	Depreciation and amortization	(7.3		)	(3.1		)
	Income from unconsolidated investments	1.8			2.2
	Operating loss	(3.3		)	(4.0		)
	Acquisition-related gains	84.2			9.5
	Acquisition-related expenses	(4.0		)	—
	Interest expense - investment	(5.3		)	(1.7		)
	Other	0.8			0.2
	Net income	72.4			4
	Net (income) loss attributable to the noncontrolling interests	(37.4		)	1
	Net income attributable to Kennedy-Wilson Holdings, Inc common shareholders	$	35		$	5
		Three Months Ended March 31,
	(Dollars in millions)	2014			2013
	Services
	Investment management, property services, and research fees (includes $7.3 and $8.3 of related party)	$	13.2		$	13.6
	Total revenue	13.2			13.6
	Operating expenses	(11.2		)	(8.5		)
	Income from unconsolidated investments	1			—
	Operating income	3			5.1
	Net income attributable to Kennedy-Wilson Holdings, Inc common shareholders	$	3		$	5.1
		Three Months Ended March 31,
	(Dollars in millions)	2014			2013
	Corporate
	Operating expenses	$	(6.2	)	$	(3.7	)
	Operating loss	(6.2		)	(3.7		)
	Interest expense-corporate	(10.5		)	(9.7		)
	Loss before (provision for) benefit from income taxes	(16.7		)	(13.4		)
	(Provision for) benefit from income taxes	(8.8		)	1.7
	Net loss	(25.5		)	(11.7		)
	Preferred dividends and accretion of preferred stock issuance costs	(2.0		)	(2.0		)
	Net loss attributable to Kennedy-Wilson Holdings, Inc. common shareholders	$	(27.5	)	$	(13.7	)
		Three Months Ended March 31,
	(Dollars in millions)	2014			2013
	Consolidated
	Investment management, property services, and research fees (includes $7.3 and $8.3 of related party)	$	13.2		$	13.6
	Rental and hotel	25.3			6.4
	Sale of real estate	11.3			2.4
	Loans and other	1.7			0.4
	Total revenue	51.5			22.8
	Operating expenses	(53.5		)	(24.5		)
	Depreciation and amortization	(7.3		)	(3.1		)
	Total operating expenses	(60.8		)	(27.6		)
	Income from unconsolidated investments	2.8			2.2
	Operating loss	(6.5		)	(2.6		)
	Acquisition-related gain	84.2			9.5
	Acquisition-related expenses	(4.0		)	—
	Interest expense - investment	(5.3		)	(1.7		)
	Interest expense - corporate	(10.5		)	(9.7		)
Other	0.8			0.2
Income (loss) before benefit from income taxes	58.7			(4.3		)
(Provision for) benefit from income taxes	(8.8		)	1.7
Net income (loss)	49.9			(2.6		)
Net (income) loss attributable to the noncontrolling interests	(37.4		)	1
Preferred dividends and accretion of preferred stock issuance costs	(2.0		)	(2.0		)
Net income (loss) attributable to Kennedy-Wilson Holdings, Inc. common shareholders	$	10.5		$	(3.6	)
(Dollars in millions)	31-Mar-14			31-Dec-13
Total Assets
Investments	$	4,048.90		$	1,607.50
Services	60.2			49.3
Corporate	298.1			142
Total assets	$	4,407.20		$	1,798.80

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2014
Income Tax Disclosure [Abstract]	'
INCOME TAXES	'
	INCOME TAXES
	In determining quarterly provisions for income taxes, Kennedy Wilson uses an effective tax rate based on actual year-to-date income and statutory tax rates. The effective tax rate also reflects Kennedy Wilson's assessment of its potential exposure for uncertain tax positions.
	The fluctuations between periods in the Company's effective tax rate are mainly due to varying levels of income and amounts attributable to foreign sourced income and noncontrolling interests. Permanent differences that impact the Company's effective rate as compared to the U.S. federal statutory rate of 34% were not materially different in amount for all periods. The difference between the U.S. federal rate of 34% and the Company's effective rate is attributable to the taxation of foreign sourced income being taxed at rates lower than the U.S. domestic rate and income attributable to noncontrolling interests. The Company's subsidiaries in Ireland and the United Kingdom are subject to corporate tax rates of 12.5% and 21.0%, respectively.

Guarantor_and_NonGuarantor_Fin

Guarantor and Non-Guarantor Financial Statements	3 Months Ended
	Mar. 31, 2014
Guarantor and Nonguarantor Financial Statements [Abstract]	'
GUARANTOR AND NON-GARANTOR FINANCIAL STATEMENTS	'
	GUARANTOR AND NON-GUARANTOR FINANCIAL STATEMENTS
	The following consolidating financial information and condensed consolidating financial information include:
	(1) Condensed consolidating balance sheets as of March 31, 2014 and December 31, 2013; consolidating statements of operations for the three months ended March 31, 2014 and 2013; consolidating statements of comprehensive income for the three months ended March 31, 2014 and 2013; and condensed consolidating statements of cash flows for the three months ended March 31, 2014 and 2013, of (a) Kennedy-Wilson Holdings, Inc., as the parent, (b) Kennedy-Wilson, Inc., as the subsidiary issuer, (c) the guarantor subsidiaries, (d) the non-guarantor subsidiaries and (e) Kennedy-Wilson Holdings, Inc. on a consolidated basis; and
	(2) Elimination entries necessary to consolidate Kennedy-Wilson Holdings, Inc., as the parent, with Kennedy-Wilson, Inc. and its guarantor and non-guarantor subsidiaries.
	Kennedy Wilson owns 100% of all of the guarantor subsidiaries, and, as a result, in accordance with Rule 3-10(d) of Regulation S-X promulgated by the SEC, no separate financial statements are required for these subsidiaries as of and for the three months ended March 31, 2014 or 2013.
	CONDENSED CONSOLIDATING BALANCE SHEET
	AS OF MARCH 31, 2014
	(Dollars in millions)	Parent			Kennedy-Wilson, Inc.			Guarantor Subsidiaries			Non-guarantor Subsidiaries			Elimination			Consolidated Total
	Assets
	Cash held by consolidated investments	$	—		$	—		$	—		$	1,298.70		$	—		$	1,298.70
	Cash and cash equivalents	—			248.3			21.6			4.5			—			274.4
	Accounts receivable	—			—			18.6			9.6			—			28.2
	Loans	—			57.1			182			19.8			(56.7		)	202.2
	Real estate and acquired in place lease values, net of accumulated depreciation and amortization	—			—			198.6			1,680.30			—			1,878.90
	Unconsolidated investments	—			9.6			425.7			184.4			—			619.7
	Other assets	—			22.7			38.9			43.5			—			105.1
	Investments in and advances to consolidated subsidiaries	959.7			1,405.10			727.3			(1.9		)	(3,090.2		)	—
	Total assets	$	959.7		$	1,742.80		$	1,612.70		$	3,238.90		$	(3,146.9	)	$	4,407.20
	Liabilities and equity
	Liabilities
	Accounts payable, accrued expenses and other liabilities	$	9		$	37		$	29.7		$	79		$	—		$	154.7
	Senior notes payable	—			706.1			—			56.7			(56.7		)	706.1
	Investment debt	—			—			175			707.2			—			882.2
	Junior subordinated debentures	—			40			—			—			—			40
	Total liabilities	9			783.1			204.7			842.9			(56.7		)	1,783.00
	Equity
	Kennedy-Wilson Holdings, Inc. shareholders' equity	950.7			959.7			1,405.10			727.3			(3,090.2		)	952.6
	Noncontrolling interests	—			—			2.9			1,668.70			—			1,671.60
	Total equity	950.7			959.7			1,408.00			2,396.00			(3,090.2		)	2,624.20
	Total liabilities and equity	$	959.7		$	1,742.80		$	1,612.70		$	3,238.90		$	(3,146.9	)	$	4,407.20
	CONDENSED CONSOLIDATING BALANCE SHEET
	AS OF DECEMBER 31, 2013
	(Dollars in millions)	Parent			Kennedy-Wilson, Inc.			Guarantor Subsidiaries			Non-guarantor Subsidiaries			Elimination			Consolidated Total
	Assets
	Cash and cash equivalents	$	—		$	48.2		$	77.2		$	44.8		$	—		$	170.2
	Cash held by consolidated investments	—			—			—			8			—			8
	Accounts receivable	—			1.1			7			8.5			—			16.6
	Intercompany receivables	—			9			—			—			(9.0		)	—
	Loans receivable	—			59.7			53.7			0.8			(57.4		)	56.8
	Real estate and acquired in place lease values, net of accumulated depreciation	—			—			145.3			542.8			—			688.1
	Unconsolidated investments	—			7.5			598			180.6			—			786.1
	Investments in and advances to consolidated subsidiaries	775.1			1,141.90			326.6			—			(2,243.6		)	—
	Other assets	—			20.9			31.4			20.7			—			73
	Total assets	$	775.1		$	1,288.30		$	1,239.20		$	806.2		$	(2,310.0	)	$	1,798.80
	Liabilities
	Accounts payable, accrued expense and other liabilities	$	6.8		$	64.2		$	22.9		$	35.2		$	—		129.1
	Intercompany payables	—			—			—			9			(9.0		)	—
	Senior notes payable	—			409			—			—			—			409
	Intercompany loans payable	—			—			—			57.4			(57.4		)	—
	Investment debt	—			—			74.4			327.4			—			401.8
	Junior subordinated debentures	—			40			—			—			—			40
	Total liabilities	6.8			513.2			97.3			429			(66.4		)	979.9
	Equity
	Kennedy-Wilson Holdings, Inc. shareholders' equity	768.3			775.1			1,141.90			326.6			(2,243.6		)	768.3
	Noncontrolling interests	—			—			—			50.6			—			50.6
	Total equity	768.3			775.1			1,141.90			377.2			(2,243.6		)	818.9
	Total liabilities and equity	$	775.1		$	1,288.30		$	1,239.20		$	806.2		$	(2,310.0	)	$	1,798.80
	CONSOLIDATING STATEMENT OF OPERATIONS
	FOR THE THREE MONTHS ENDED MARCH 31, 2014
	(Dollars in millions)	Parent			Kennedy-Wilson, Inc.			Guarantor Subsidiaries			Non-guarantor Subsidiaries			Elimination			Consolidated Total
	Revenue
	Investment management, property services and research fees	$	—		$	0.1		$	13.1		$	—		$	—		$	13.2
	Rental and hotel	—			—			3.4			21.9			—			25.3
Sale of real estate	—			—			0.7			10.6			—			11.3
Loans and other	—			0.1			0.5			1.1			—			1.7
Total revenue	—			0.2			17.7			33.6			—			51.5
Operating expenses
Commission and marketing	—			—			0.8			0.2			—			1
Rental and hotel operating	—			—			1.5			12.6			—			14.1
Cost of real estate sold	—			—			0.7			9			—			9.7
Compensation and related	1.7			9.9			7.5			1.4			—			20.5
General and administrative	—			2.9			4.2			1.1			—			8.2
Depreciation and amortization	—			0.3			2.2			4.8			—			7.3
Total operating expenses	1.7			13.1			16.9			29.1			—			60.8
Income from unconsolidated subsidiaries	—			—			1.7			1.1			—			2.8
Income from consolidated subsidiaries	51.6			81.9			77			—			(210.5		)	—
Operating income (loss)	49.9			69			79.5			5.6			(210.5		)	(6.5		)
Non-operating income (expense)
Acquisition-related gains	—			—			3.7			80.5			—			84.2
Acquisition-related expenses	—			—			(0.5		)	(3.5		)	—			(4.0		)
Interest expense-investment	—			—			—			(5.3		)	—			(5.3		)
Interest expense-corporate	—			(10.5		)	—			—			—			(10.5		)
Other income / (expense)	—			2			(1.2		)	—			—			0.8
Income (loss) before benefit from income taxes	49.9			60.5			81.5			77.3			(210.5		)	58.7
(Provision for) benefit from income taxes	—			(8.8		)	—			—			—			(8.8		)
Net income (loss)	49.9			51.7			81.5			77.3			(210.5		)	49.9
Net (income) loss attributable to the noncontrolling interests	—			—			—			(37.4		)	—			(37.4		)
Net income (loss) attributable to Kennedy-Wilson Holdings, Inc.	49.9			51.7			81.5			39.9			(210.5		)	12.5
Preferred dividends and accretion of preferred stock issuance costs	(2.0		)	—			—			—			—			(2.0		)
Net income (loss) attributable to Kennedy-Wilson Holdings, Inc. common shareholders	$	47.9		$	51.7		$	81.5		$	39.9		$	(210.5	)	$	10.5
CONSOLIDATING STATEMENT OF OPERATIONS
FOR THE THREE MONTHS ENDED MARCH 31, 2013
(Dollars in millions)	Parent			Kennedy-Wilson, Inc.			Guarantor Subsidiaries			Non-guarantor Subsidiaries			Elimination			Consolidated Total
Revenue
Investment management, property services, and research fees	$	—		$	—		$	7		$	6.6		$	—		$	13.6
Rental and hotel	—			—			1.7			4.7			—			6.4
Sale of real estate	—			—			2.4			—			—			2.4
Loans and other	—			—			0.4			—			—			0.4
Total revenue	—			—			11.5			11.3			—			22.8
Operating expenses
Commission and marketing	—			0.1			0.4			—			—			0.5
Rental and hotel operating	—			—			0.9			2.2			—			3.1
Cost of real estate sold	—			—			1.9			—			—			1.9
Compensation and related	1.8			4.9			3.6			3.3			—			13.6
General and administrative	—			2.2			1.3			1.9			—			5.4
Depreciation and amortization	—			0.1			1.2			1.8			—			3.1
Total operating expenses	1.8			7.3			9.3			9.2			—			27.6
Income from unconsolidated investments, net of depreciation and amortization	—			—			3.5			(1.3		)	—			2.2
Income from consolidated subsidiaries	(0.8		)	14.4			8.8			—			(22.4		)	—
Operating income (expense)	(2.6		)	7.1			14.5			0.8			(22.4		)	(2.6		)
Non-operating income (expense)
Acquisition-related gains	—			—			—			9.5			—			9.5
Interest expense-investment	—			—			(0.1		)	(1.6		)	—			(1.7		)
Interest expense-corporate	—			(9.7		)	—			—			—			(9.7		)
Other income	—			—			0.2			—			—			0.2
(Loss) income before benefit from income taxes	(2.6		)	(2.6		)	14.6			8.7			(22.4		)	(4.3		)
Benefit from (provision for) income taxes	—			1.7			—			—			—			1.7
Net (loss) income	(2.6		)	(0.9		)	14.6			8.7			(22.4		)	(2.6		)
Net income attributable to the noncontrolling interests	—			—			—			1			—			1
Net (loss) income attributable to Kennedy-Wilson Holdings, Inc.	(2.6		)	(0.9		)	14.6			9.7			(22.4		)	(1.6		)
Preferred dividends and accretion of preferred stock issuance costs	(2.0		)	—			—			—			—			(2.0		)
Net (loss) income attributable to Kennedy-Wilson Holdings, Inc. common shareholders	$	(4.6	)	$	(0.9	)	$	14.6		$	9.7		$	(22.4	)	$	(3.6	)
CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME
FOR THE THREE MONTHS ENDED MARCH 31, 2014
(Dollars in millions)	Parent			Kennedy-Wilson, Inc.			Guarantor Subsidiaries			Non-guarantor Subsidiaries			Elimination			Consolidated Total
Net (loss) income	$	49.9		$	51.7		$	81.5		$	77.3		$	(210.5	)	$	49.9
Other comprehensive income (loss), net of tax:
Unrealized foreign currency translation (loss) gain	(1.2		)	(1.2		)	(5.1		)	(0.9		)	7.2			(1.2		)
Amounts reclassified out of AOCI during the period	1.2			1.2			—			1.2			(2.4		)	1.2
Unrealized forward contract foreign currency (loss) gain	(1.5		)	(1.5		)	2.4			—			(0.9		)	(1.5		)
Total other comprehensive (loss) income for the period	$	(1.5	)	$	(1.5	)	$	(2.7	)	$	0.3		$	3.9		$	(1.5	)
Comprehensive income	$	48.4		$	50.2		$	78.8		$	77.6		$	(206.6	)	$	48.4
Comprehensive (income) loss attributable to noncontrolling interests	—			—			—			(37.4		)	—			(37.4		)
Comprehensive income attributable to Kennedy-Wilson Holdings, Inc.	$	48.4		$	50.2		$	78.8		$	40.2		$	(206.6	)	$	11
CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME
FOR THE THREE MONTHS ENDED MARCH 31, 2013
(Dollars in millions)	Parent			Kennedy-Wilson, Inc.			Guarantor Subsidiaries			Non-guarantor Subsidiaries			Elimination			Consolidated Total
Net (loss) income	$	(2.6	)	$	(0.9	)	$	14.6		$	8.7		$	(22.4	)	$	(2.6	)
Other comprehensive income (loss), net of tax:
Unrealized foreign currency translation gains	(14.4		)	(14.4		)	(12.9		)	(2.0		)	29.3			(14.4		)
Unrealized forward contract foreign currency loss	3.6			3.6			3.2			—			(6.8		)	3.6
Total other comprehensive income for the period	$	(10.8	)	$	(10.8	)	$	(9.7	)	$	(2.0	)	$	22.5		$	(10.8	)
Comprehensive (loss) income	$	(13.4	)	$	(11.7	)	$	4.9		$	6.7		$	0.1		$	(13.4	)
Comprehensive income attributable to noncontrolling interests	—			—			—			1			—			1
Comprehensive (loss) income attributable to Kennedy-Wilson Holdings, Inc.	$	(13.4	)	$	(11.7	)	$	4.9		$	7.7		$	0.1		$	(12.4	)
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
FOR THE THREE MONTHS ENDED MARCH 31, 2014
(Dollars in millions)	Parent			Kennedy-Wilson, Inc.			Guarantor Subsidiaries			Non-guarantor Subsidiaries			Consolidated Total
Net cash provided by (used in) operating activities	$	(0.3	)	$	(51.2	)	$	(5.8	)	$	20.4		$	(36.9	)
Cash flows from investing activities:
Additions to loans	—			—			(5.7		)	(152.9		)	(158.6		)
Collections of loans	—			0.1			0.1			—			0.2
Net proceeds from sale of real estate	—			—			—			10			10
Purchases of and additions to real estate	—			—			(13.4		)	(354.3		)	(367.7		)
Distributions from unconsolidated investments	—			—			5.6			5.4			11
Contributions to unconsolidated investments	—			(2.0		)	(6.8		)	(58.3		)	(67.1		)
Investment in marketable securities	—			—			(4.5		)	—			(4.5		)
(Investments in) distributions from consolidated subsidiaries, net	(180.2		)	(37.8		)	(42.9		)	260.9			—
Net cash (used in) provided by investing activities	(180.2		)	(39.7		)	(67.6		)	(289.2		)	(576.7		)
Cash flows from financing activities:
Borrowings under line of credit	—			90			—			—			90
Repayment of line of credit	—			(90.0		)	—			—			(90.0		)
Borrowings under mortgage loans payable	—			—			18			177.8			195.8
Borrowings under senior notes payable	—			297.2			—			—			297.2
Debt issue costs	—			(6.2		)	(0.2		)	(3.2		)	(9.6		)
Repayment of mortgage loans payable	—			—			—			(5.5		)	(5.5		)
Issuance of common stock	190.8			—			—			—			190.8
Dividends paid	(7.8		)	—			—			—			(7.8		)
Repurchase of common stock	(2.5		)	—			—			—			(2.5		)
Proceeds from issuance of KWE shares	—			—			—			1,350.70			1,350.70
Contributions from noncontrolling interests	—			—			—			2.9			2.9
Distributions to noncontrolling interests	—			—			—			(2.8		)	(2.8		)
Net cash provided by (used in) financing activities	180.5			291			17.8			1,519.90			2,009.20
Effect of currency exchange rate changes on cash and cash equivalents	—			—			—			(0.7		)	(0.7		)
Net change in cash and cash equivalents	—			200.1			(55.6		)	1,250.40			1,394.90
Cash and cash equivalents, beginning of year	—			48.2			77.2			52.8			178.2
Cash and cash equivalents, end of period	$	—		$	248.3		$	21.6		$	1,303.20		$	1,573.10
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
FOR THE THREE MONTHS ENDED MARCH 31, 2013
(Dollars in millions)	Parent			Kennedy-Wilson, Inc.			Guarantor Subsidiaries			Non-guarantor Subsidiaries			Consolidated Total
Net cash (used in) provided by operating activities	$	0.1		$	(39.7	)	$	8.3		$	3.7		$	(27.6	)
Cash flows from investing activities:
Additions to loans	—			—			(8.2		)	—			(8.2		)
Proceeds from sale of interest in a entity	—			—			26.7			—			26.7
Net proceeds from sale of real estate	—			—			3.4			—			3.4
Purchases of and additions to real estate	—			—			(0.8		)	(14.8		)	(15.6		)
Distributions from unconsolidated investments	—			—			28.8			—			28.8
Contributions to unconsolidated investments	—			(2.3		)	(29.2		)	(20.6		)	(52.1		)
(Investment in) distributions from consolidated subsidiaries, net	0.3			13.7			(43.9		)	29.9			—
Net cash (used in) provided by investing activities	0.3			11.4			(23.2		)	(5.5		)	(17.0		)
Cash flows from financing activities:
Borrowings under line of credit	—			35			—			—			35
Repayment of lines of credit	—			(35.0		)	—			—			(35.0		)
Debt issue costs	—			(0.4		)	—			—			(0.4		)
Repayment of investment debt	—			—			—			(0.1		)	(0.1		)
Issuance of common stock	133.8			—			—			—			133.8
Dividends paid	(7.1		)	—			—			—			(7.1		)
Intercompany receivables, net	—			(2.7		)	—			2.7			—
Net cash provided by (used in) financing activities	126.7			(3.1		)	—			2.6			126.2
Effect of currency exchange rate changes on cash and cash equivalents	—			(2.4		)	(0.5		)	(1.2		)	(4.1		)
Net change in cash and cash equivalents	127.1			(33.8		)	(15.4		)	(0.4		)	77.5
Cash and cash equivalents, beginning of period	—			64.5			38.5			17.9			120.9
Cash and cash equivalents, end of period	$	127.1		$	30.7		$	23.1		$	17.5		$	198.4

Subsequent_Events

Subsequent Events	3 Months Ended
	Mar. 31, 2014
Subsequent Events [Abstract]	'
SUBSEQUENT EVENTS	'
	SUBSEQUENT EVENTS
	On May 9, 2014, one of our wholly-owned subsidiaries and certain of our equity partners entered into a purchase agreement with KWE to sell to KWE a portfolio of 7 office and 6 retail properties located across Dublin, Ireland, with one in Cork, Ireland (the “Opera Portfolio”) for a total purchase price of approximately €391.4 million (approximately $541.7 million), consisting of approximately €194.9 million (approximately $269.7 million) of cash and approximately €196.5 million (approximately $272.0 million) of assumed non-recourse debt secured by the Opera Portfolio. The Company currently owns approximately twenty-five percent of the equity interests in the Opera Portfolio.
	In addition, on May 9, 2014, one of our wholly-owned subsidiaries entered into a purchase agreement with KWE to sell to KWE, its interests in a portfolio of properties located in Dublin, Ireland, comprising of 272 residential units, approximately 31,000 square feet of total commercial space and a partially completed residential development with permits for 166 residential units and 14,800 square feet of total commercial space (“Central Park Portfolio”) for a total purchase price of approximately €88.1 million (approximately $121.9 million), consisting of approximately €30.7 million of cash (approximately $42.5 million) and approximately €57.4 million (approximately $79.4 million) of assumed non-recourse debt secured by the Central Park Portfolio.  In addition to being conditioned on obtaining approval from KWE’s independent shareholders, the closing of the sale of the Central Park Portfolio is subject to customary closing conditions, including lender consent. Subject to the discussion above, the Company anticipates closing these transaction in the second quarter of 2014.
	In the event that these two transactions are consummated, we will receive a total of approximately €94.4 million in cash (approximately $130.7 million), which includes a promote fee of €15.0 million (approximately $20.8 million) for the Opera Portfolio transaction paid to us by our current equity partners.
	The Company evaluated subsequent events through the date these financial statements were issued.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies and Adoption of New Accounting Pronouncements (Policies)	3 Months Ended
	Mar. 31, 2014
Accounting Policies [Abstract]	'
REVENUE RECOGNITION	'
	REVENUE RECOGNITION—Performance fees or carried interests are allocated to the general partner, special limited partner or asset manager of Kennedy Wilson's real estate funds and loan pool participations based on the cumulative performance of the funds and loan pools and are subject to preferred return thresholds of the limited partners and participants. At the end of each reporting period, Kennedy Wilson calculates the performance fee that would be due to the general partner, special limited partner or asset manager's interests for a fund or loan pool, pursuant to the fund agreement or participation agreements, as if the fair value of the underlying investments were realized as of such date, irrespective of whether such amounts have been realized. As the fair value of underlying investments varies between reporting periods, it is necessary to make adjustments to amounts recorded as performance fees to reflect either (a) positive performance resulting in an increase in the performance fee allocated to the general partner or asset manager or (b) negative performance that would cause the amount due to Kennedy Wilson to be less than the amount previously recognized as revenue, resulting in a negative adjustment to performance fees allocated to the general partner or asset manager. A majority of the performance fees are recognized in investment management revenue, and substantially all of the carried interest is recognized in income from unconsolidated investments in our consolidated statements of operations. Total performance fees recognized from inception through March 31, 2014 that may be reversed in future periods if there is negative fund or loan pool performance totaled $9.8 million. Performance fees accrued as of March 31, 2014 and December 31, 2013 were $9.8 million and $6.1 million, respectively, and are included in accounts receivable in the accompanying consolidated balance sheet.
REAL ESTATE ACQUISITIONS	'
	REAL ESTATE ACQUISITIONS—The purchase price of acquired properties is recorded to land, buildings and building improvements and intangible lease value (value of above-market and below-market leases, acquired in-place lease values, and tenant relationships, if any) based on their respective estimated fair values in accordance with Business Combinations ASC Subtopics 805-10. Acquisition-related costs are expensed as incurred.
	The valuations of real estate are based on management estimates of the real estate assets using income and market approaches. The indebtedness securing the real estate are valued, in part, based on third party valuations and management estimates also using an income approach.
NONCONTROLLING INTERESTS	'
	NONCONTROLLING INTERESTS—Noncontrolling interests are reported within equity as a separate component of Kennedy Wilson's equity in accordance with Noncontrolling Interests in Consolidated Financial Statements ASC Subtopic 810-10. Revenues, expenses, gains, losses, net income or loss, and other comprehensive income are reported in the consolidated statements of operations at the consolidated amounts and net income and comprehensive income attributable to noncontrolling interests are separately stated.
FOREIGN CURRENCIES	'
	FOREIGN CURRENCIES—The financial statements of subsidiaries located outside the United States are measured using the local currency as the functional currency. The assets and liabilities of these subsidiaries are translated at the rates of exchange at the balance sheet date, and income and expenses are translated at the average monthly rate. The foreign currencies include the euro, the British pound sterling, and the Japanese yen. Cumulative translation adjustments, to the extent not included in cumulative net income, are included in the consolidated statement of equity as a component of accumulated other comprehensive income.
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDING ACTIVITIES	'
	DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES—All derivative instruments are recognized as either assets or liabilities in the balance sheet at their respective fair values. For derivatives designated in hedging relationships, changes in fair value of cash flow hedges or net investment hedges are recognized in accumulated other comprehensive income, to the extent the derivative is effective at offsetting the changes in the item being hedged until the hedged item affects earnings. Changes in fair value for fair value hedges are recognized in earnings.
RECENT ACCOUNTING PRONOUNCEMENTS	'
	RECENT ACCOUNTING PRONOUNCEMENTS—On April 10, 2014, the Financial Accounting Standards Board issued ASU 2014-08, which amends the definition of discontinued operations and requires additional disclosures for disposal transactions that do not meet the revised discontinued operations criteria. ASU 2014-08 is required to be adopted for fiscal years beginning after December 15, 2014, with early adoption permitted. The Company's early adoption of this pronouncement on January 1, 2014 did not have a material impact on the Company's consolidated financial statements.
	The FASB did not issue any other ASCs during the first three months of 2014 that we expect to be applicable and have a material impact on our financial position or results of operations.
RECLASSIFICATIONS	'
	RECLASSIFICATIONS—Certain balances included in prior year's financial statements have been reclassified to conform with the current year's presentation.

Loans_Tables

Loans (Tables)	3 Months Ended
	Mar. 31, 2014
Receivables [Abstract]	'
Schedule of Loans	'
	The following table summarizes Kennedy Wilson's investment in loans at March 31, 2014 and December 31, 2013:
		March 31,		December 31,
	(Dollars in millions)	2014		2013
	Loans	$	198.1	$	52.7
	Loans — related parties	4.1		4.1
	Total loans(1)	$	202.2	$	56.8
	(1) Loans have a weighted average stated interest rate of 3.31% and 6.18% at March 31, 2014 and December 31, 2013, respectively, and maturity dates ranging from May 2014 to February 2017. Effective interest rates are higher as certain note receivables were acquired at a discount.

Real_Estate_and_InPlace_Lease_1

Real Estate and In-Place Lease Value (Tables)	3 Months Ended
	Mar. 31, 2014
Real Estate [Abstract]	'
Schedule of Investment in Consolidated Real Estate Properties	'
	The following table summarizes the Company's investment in consolidated real estate properties at March 31, 2014 and December 31, 2013:
			March 31,				December 31,
	(Dollars in millions)		2014				2013
	Land		$	424.5			$	187.8
	Buildings		1,264.50				484.1
	Building improvements		18.6				12.7
	In-place lease value		204.1				29.8
			1,911.70				714.4
	Less accumulated depreciation and amortization		(32.8		)		(26.3		)
	Real estate, net		$	1,878.90			$	688.1
Schedule of Business Acquisitions, by Acquisition [Table Text Block]	'
	The following table summarizes the assets and liabilities assumed as a result of gaining control of these properties and the acquisition related gains recognized:
	(Dollars in millions)
	Property	Type	Location	Cash			Real estate and acquired in-place lease values, net			Accounts receivable and other assets			Accounts payable, accrued expenses, and other liabilities			Mortgage loans		Noncontrolling interests		Acquisition related gain
	Three multifamily properties	Multifamily	Ireland	$	3.6		$	248.5		$	0.9		$	5.4		$	114.3	$	66.6	$	37.8
	Two office properties	Commercial	Ireland	4.3			223.9			7.6			4.9			75.2		77.9		32.2
	Two commercial properties and loans secured by real estate	Commercial & Loans	U.K.	9.6			195			5.6			8.1			100.8		62		10.5
				$	17.5		$	667.4		$	14.1		$	18.4		$	290.3	$	206.5	$	80.5
	During the quarter ended March 31, 2014, the Company acquired the following properties:
	(Dollars in millions)
	Date acquired	Type	Description	Location	Land			Building			Intangible assets			Mortgage loans
	1/20/14	Commercial (1)	Portfolio of 14 commercial, retail, and industrial properties	United Kingdom	$	29.7		$	47.5		$	40.2		$	—
	2/20/14	Hotel	193 room hotel	Western U.S.	1.3			8.3			—			—
	2/28/14	Multifamily	24 apartment units, 2 penthouse units, and 1,000 square feet of retail	Ireland	0.6			15.1			0.4			9.6
	3/28/14	Commercial (2)	26 commercial properties throughout England and Scotland	United Kingdom	54			132			54			—
	3/31/14	Multifamily(3)	281 completed apartments and a partially completed residential block, 725k square feet of commercial space, and 7.4 acres of commercial development land	Ireland	32.7			80.9			1.2			78.9
					$	118.3		$	283.8		$	95.8		$	88.5
	(1) On February 28, 2014, the Company contributed its 50% interest in this portfolio to KWE as part of the Company's investment in KWE's initial public offering.
	(2) This portfolio of properties was acquired by KWE.
Business Acquisition, Pro Forma Information	'
	The Company’s unaudited pro forma results have been prepared for comparative purposes only and do not purport to be indicative of the results of operations that would have occurred had this acquisition been consummated at the beginning of the periods presented.
	The unaudited pro forma data presented below assumes that the acquisitions during the quarter ended March 31, 2014 occurred as of January 1, 2013.
			Unaudited
			Three Months Ended March 31,
	(Dollars in millions, except for per share data)		2014				2013
	Pro forma revenues		$	72.7			$	34.9
	Pro forma (loss) income from unconsolidated investments		(0.7		)		0.7
	Pro forma net income (loss) attributable to Kennedy-Wilson Holdings, Inc. common shareholders		8.6				(4.3		)
	Pro forma net income (loss) per share:
	Basic		$	0.1			$	(0.07	)
	Diluted		$	0.1			$	(0.07	)

Unconsolidated_Investments_Tab

Unconsolidated Investments (Tables)	3 Months Ended
	Mar. 31, 2014
Equity Method Investments and Joint Ventures [Abstract]	'
Schedule of Investments in Unconsolidated Joint Ventures	'
	The Company has unconsolidated investments through real estate related joint ventures and loan pool participations. The following table details its investments in joint ventures and loan pool participations as of March 31, 2014 and December 31, 2013:
			March 31,				December 31,
	(Dollars in millions)		2014				2013
	Investments in joint ventures		$	584.5			$	751.4
	Investments in loan pool participations		35.2				34.7
	Total		$	619.7			$	786.1
Schedule of Joint Ventures by Location and Investment Type	'
	The following table details our investments in joint ventures by investment type and geographic location as of March 31, 2014:
	(Dollars in millions)	Multifamily			Commercial			Loan		Residential		Other			Total
	Western U.S.	$	136.9		$	159.2		$	50.7	$	49	$	9.7		$	405.5
	Japan	67.9			—			—		—		—			67.9
	United Kingdom	—			51			—		—		—			51
	Ireland	—			33.3			—		—		—			33.3
	Spain	—			—			—		—		26.8			26.8
	Total	$	204.8		$	243.5		$	50.7	$	49	$	36.5		$	584.5
	The following table details our investments in joint ventures by investment type and geographic location as of December 31, 2013:
	(Dollars in millions)	Multifamily			Commercial			Loan		Residential		Other			Total
	Western U.S.	$	133.3		$	160.3		$	50.3	$	48.7	$	8		$	400.6
	Japan	68.8			—			—		—		—			68.8
	United Kingdom	—			104.5			6.3		—		—			110.8
	Ireland	48.2			96.1			—		—		—			144.3
	Spain	—			—			—		—		26.9			26.9
	Total	$	250.3		$	360.9		$	56.6	$	48.7	$	34.9		$	751.4
Schedule of Joint Venture Cash Distributions	'
	During the three months ended March 31, 2014 and 2013, the Company received the following cash distributions from its investment in KWR for the settlement of hedges, refinancing of property level debt, and operating distributions:
		Three Months Ended March 31,
	(Dollars in millions)	2014				2013
	Settlement of hedges	$	—			$	10.8
	Refinancing of property level debt	—				1
	Operating distributions	0.4				1.7
	Total	$	0.4			$	13.5
Schedule of New Joint Venture Investments	'
	See the table below for a breakdown of contributions to new joint venture investments for the three months ended March 31, 2014:
		Multifamily						Commercial
	(Dollars in millions)	Amount			No. of Properties			Amount		No. of Properties		Total			No. of Properties
	Western U.S.	$	4		1			$	—	—		$	4		1
	United Kingdom(1)	—			—			57.2		14		57.2			14
	Total contributions - new joint venture investments	$	4		1			$	57.2	14		$	61.2		15
Schedule of Joint Venture Cash Distributions by Investment Type and Geographic Location	'
	The following table details cash distributions by investment type and geographic location for the three months ended March 31, 2014:
		Multifamily						Commercial				Residential and Other						Total
	(Dollars in millions)	Operating			Investing			Operating		Investing		Operating			Investing			Operating		Investing
	Western U.S.	$	2.3		$	1.5		$	1.5	—		0.8			$	1.9		$	4.6	$	3.4
	Japan	0.4			—			—		—		—			—			0.4		—
	United Kingdom	—			—			2.3		4.4		—			—			2.3		4.4
	Ireland	—			—			1.2		—		—			—			1.2		—
	Spain	—			—			—		—		—			1			—		1
	Total	$	2.7		$	1.5		$	5	$	4.4	$	0.8		$	2.9		$	8.5	$	8.8
Schedule of Investment in Loan Pools	'
	The following table represents the demographics of the Company's investment in the loan pools including the initial UPB and the UPB as of March 31, 2014.
	(Dollars in millions)				Kennedy Wilson Ownership		Unpaid Principal Balance						Kennedy Wilson Initial Equity Invested				Investment Balance at March 31, 2014			Expected Accretion Over Total Estimated Collection Period
	Acquisition Date		Location				Initial(1)			March 31, 2014(1)												Accreted to Date
	February 2010(2)		Western U.S.		15.00%		$	342.4		$	—		$	11.1			$	0.6		$	4.6	$	4.6
	Dec-11		United Kingdom		12.50%		2,174.60			31.8			61.2				—			19.2		19.2
	Apr-12		Western U.S.		75.00%		43.4			2.8			30.9				2.3			4.3		3.9
	Aug-12		Ireland		10.00%		496.6			347.6			7				8.4			1.7		0.6
	Dec-12		United Kingdom		5.00%		646.7			150.1			19.3				4.4			4		2.2
	Apr-13		United Kingdom		10.00%		193.8			131.6			13				11			3.2		0.9
	Aug-13		United Kingdom		20.00%		142.1			142.1			7.5				8.5			4.4		0.8
	Total						$	4,039.60		$	806		$	150			$	35.2		$	41.4	$	32.2
	(1) Estimated foreign exchange rate is £0.60 =1 USD and €0.73 =1 USD.
Schedule of Interest Income and Foreign Currency Gain (Loss) Recognized in Loan Pool Participations	'
	The following table presents the income from unconsolidated investments for loan pools and foreign currency gain and (loss) recognized by Kennedy Wilson during the three months ended March 31, 2014 and 2013 for the loan pools that were outstanding:
		Three Months Ended March 31,
	(Dollars in millions)	2014				2013
	Income from unconsolidated investments	$	2.1			$	2.5
	Foreign currency translation gain (loss)	0.2				(3.9		)
	Total	$	2.3			$	(1.4	)

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
Schedule of Fair Value Measurements	'
	The following table presents fair value measurements (including items that are required to be measured at fair value and items for which the fair value option has been elected) as of March 31, 2014:
	(Dollars in millions)	Level 1				Level 2			Level 3			Total
	Marketable securities	$	8.5			$	—		$	—		$	8.5
	Unconsolidated investments	—				—			82			82
	Currency forward contract	—				(11.2		)	—			(11.2		)
	Total	$	8.5			$	(11.2	)	$	82		$	79.3
	The following table presents fair value measurements (including items that are required to be measured at fair value and items for which the fair value option has been elected) as of December 31, 2013:
	(Dollars in millions)	Level 1				Level 2			Level 3			Total
	Marketable securities	$	4			$	—		$	—		$	4
	Unconsolidated investments	—				—			81.1			81.1
	Currency forward contract	—				(9.6		)	—			(9.6		)
	Total	$	4			$	(9.6	)	$	81.1		$	75.5
Schedule of Investments in Joint Ventures Held at Fair Value	'
	The following table summarizes our investments in unconsolidated investments held at fair value by type:
	(Dollars in millions)	31-Mar-14				31-Dec-13
	Funds	$	34.5			$	33.5
	FV Option	47.5				47.6
	Total	$	82			$	81.1
Schedule of Changes in Level 3 Investments	'
	The following table presents changes in Level 3 investments for the three months ended March 31, 2014 and 2013:
		Three Months Ended March 31,
	(Dollars in millions)	2014				2013
	Beginning balance	$	81.1			$	68.4
	Unrealized and realized gains	—				—
	Unrealized and realized losses	—				—
	Contributions	1.3				0.2
	Distributions	(0.4		)		(0.2		)
	Ending balance	$	82			$	68.4
Schedule of the Funds and Fair Value Option Investments, Significant Inputs	'
	The table below describes the range of unobservable inputs for real estate assets:
		Estimated Rates Used for
		Capitalization Rates		Discount Rates
	Office	6.00% - 7.50%		7.00% - 9.75%
	Retail	6.00% - 10.00%		9.00% - 12.00%
	Hotel	6.50%		8.00%
	Multifamily	5.75% - 6.75%		7.50% - 9.00%
	Loan	n/a		1.75% - 12.00%
	Land and condominium units	n/a		8.00% - 12.00%
Schedule of Currency Forward Contracts	'
	The table below details the currency forward contracts Kennedy Wilson had as of March 31, 2014:
	(Dollars in millions)								Change in Unrealized Gains (Losses)
	Currency	Notional Amount	Trade Date	Settlement Date	Exchange Rate	Fair Value			Three Months Ended March 31, 2014
	Euro	€ 129.30	5/31/2012 - 3/18/2014	8/12/2014 - 12/19/2016	1.2400 - 1.3925	$	(6.9	)	$	0.1
	GBP	£95.5	8/23/2013 - 2/25/2014	8/28/2014 - 2/27/2019	1.5479 - 1.6371	(4.3		)	(1.7		)
	Total					$	(11.2	)	$	(1.6	)

Other_Assets_Tables

Other Assets (Tables)	3 Months Ended
	Mar. 31, 2014
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]	'
Schedule of Other Assets	'
	Other assets consist of the following:
	(Dollars in millions)	March 31, 2014		31-Dec-13
	Goodwill	23.9		23.9
	Loan fees, net of accumulated amortization of $5.2 million and $4.5 million at	22.9		14.1
	March 31, 2014 and December 31, 2013, respectively
	Above-market leases	19.4		—
	Deposits and other, net of accumulated amortization of $1.5 million and	11.8		13
	$1.2 million at March 31, 2014 and December 31, 2013, respectively
	Office furniture and equipment net of accumulated depreciation of $2.5 million and	9.6		10.4
	$2.2 million at March 31, 2014 and December 31, 2013, respectively
	Prepaid expenses	9		7.6
	Marketable securities	8.5		4
	Other Assets	$	105.1	$	73

Investment_Debt_Tables

Investment Debt (Tables)	3 Months Ended
	Mar. 31, 2014
Debt Instrument [Line Items]	'
Schedule of Maturities of Mortgage Loans and Notes Payable	'
	The aggregate maturities of investment debt subsequent to March 31, 2014 are as follows:
	(Dollars in millions)
	2014	$	26.9
	2015	118.7
	2016	51.8
	2017	146.7
	2018	86.7
	Thereafter	438.5
		869.3
	Debt premium	12.9
		$	882.2
Mortgage Loans and Notes Payable [Member]	'
Debt Instrument [Line Items]	'
Schedule of Mortgage Loans and Notes Payable	'
	Investment debt at March 31, 2014 and December 31, 2013 consist of the following:
	(Dollars in millions)			Carrying Amount of Investment Debt as of (1)
	Types of Property Pledged as Collateral	Region		March 31,		December 31,
				2014		2013
	Multifamily properties (1)	Western U.S.		$	260.2	$	261
	Commercial buildings	Western U.S.		128.2		110.4
	Residential	Western U.S		30		28
	Commercial	Japan		2.4		2.4
	Commercial (1)	Ireland		75.2		—
	Multifamily (1)	Ireland		202.8		—
	Notes Receivable (1)	Ireland		82.5		—
	Commercial (1)	United Kingdom		94.9		—
	Notes Receivable (1)	United Kingdom		6		—
	Investment debt(2)			$	882.2	$	401.8
	(1) The investment debt balances include the unamortized debt premiums. Debt premiums represent the excess of the fair value of debt over the principal value of debt assumed in various acquisitions and are amortized into interest expense over the remaining term of the related debt in a manner that approximates the effective interest method. The unamortized loan premium as of March 31, 2014 and December 31, 2013 was $12.9 million and $5.3 million, respectively.
	(2) The investment debt had a weighted average interest rate of 4.35% and 4.13% at March 31, 2014 and December 31, 2013.

Senior_Notes_Tables

Senior Notes (Tables) (Senior Notes [Member])	3 Months Ended
	Mar. 31, 2014
Senior Notes [Member]	'
Debt Instrument [Line Items]	'
Schedule of Senior Notes	'
				March 31, 2014							December 31, 2013
	(Dollars in millions)					Unamortized							Unamortized
		Interest Rate	Maturity Date	Face Value		Net Premium/(Discount)			Carrying Value		Face Value		Net Premium/(Discount)		Carrying Value
	2042 Notes	7.75%	12/1/42	$	55	$	—		$	55	$	55	$	—	$	55
	2024 Notes	5.88%	4/1/24	300		(2.8		)	297.2		—		—		—
	2019 Notes	8.75%	4/1/19	350		3.9			353.9		350		4		354
	Senior Notes			$	705	$	1.1		$	706.1	$	405	$	4	$	409

Stockholders_Equity_Tables

Stockholders Equity (Tables)	3 Months Ended
	Mar. 31, 2014
Equity [Abstract]	'
Schedule of Dividends Declared and Paid	'
	During the following periods, Kennedy Wilson declared and paid the following cash distributions on its common and preferred stock:
		Three Months Ended March 31, 2014						Three Months Ended March 31, 2013
	(Dollars in millions)	Declared			Paid			Declared			Paid
	Preferred Stock
	Series A (1)	$	1.5		$	1.5		$	1.5		$	1.5
	Series B (2)	0.5			0.5			0.5			0.5
	Total Preferred Stock	2			2			2			2
	Common Stock (3)	8.2			5.8			5.1			5.1
	Total (4)	$	10.2		$	7.8		$	7.1		$	7.1
	(1) 6.00% Series A, 100,000 shares issued and outstanding as of March 31, 2014 and 2013, respectively, mandatorily convertible on May 19, 2015.
	(2) 6.45% Series B, 32,550 shares issued and outstanding as of March 31, 2014 and 2013, respectively, mandatorily convertible on November 3, 2018.
	(3) $0.0001 par value per share, 125,000,000 shares authorized as of March 31, 2014 and 2013, respectively.
	(4) Common stock dividends are declared at the end of each quarter and paid in the following quarter. The amount declared and not paid is accrued on the consolidated balance sheet.
Schedule of Accumulated Other Comprehensive Income (Loss)	'
	The following table summarizes the changes in each component of accumulated other comprehensive income (loss), net of 40% estimated tax:
		Foreign Currency Translation			Forward Contract Foreign Currency			Total Accumulated Other Comprehensive Income
	(Dollars in millions)
	Balance at December 31, 2013	$	4.3		$	4.9		$	9.2
	Unrealized losses, arising during the period	(1.2		)	(2.4		)	(3.6		)
	Amounts reclassified out of AOCI during the period	1.2			—			1.2
	Taxes on unrealized losses, arising during the period	—			0.9			0.9
	Balance at March 31, 2014	$	4.3		$	3.4		$	7.7

Earnings_Per_Share_Earnings_Pe

Earnings Per Share Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Schedule of Earnings Per Share, Basic and Diluted	'
	The following is a summary of the elements used in calculating basic and diluted income (loss) per share for the three months ended March 31, 2014 and 2013:
		Three Months Ended March 31,
	(Dollars in millions, except share and per share amounts)	2014			2013
	Net income (loss) attributable to Kennedy-Wilson Holdings, Inc. common shareholders	$	10.5		$	(3.6	)
	Allocation to participating securities:
	Net income allocated to participating securities	—			—
	Dividends declared on participating securities	(0.2		)	(0.3		)
	Net income (loss) attributable to Kennedy-Wilson Holdings, Inc. common shareholders, net of allocation to participating securities	10.3			(3.9		)
	Dividends declared on common shares	(8.0		)	(4.8		)
	Undistributed earnings attributable to Kennedy-Wilson Holdings, Inc. common shareholders, net of allocation to participating securities	$	2.3		$	(8.7	)
	Distributed earnings per share	$	0.09		$	0.07
	Undistributed earnings per share	0.03			(0.13		)
	Income (loss) per basic	0.12			(0.06		)
	Income (loss) per diluted	$	0.12		$	(0.06	)
	Weighted average shares outstanding for basic	88,142,576			61,853,258
	Weighted average shares outstanding for diluted(1)	89,422,885			61,853,258
	Dividends declared per common share	$	0.09		$	0.07
	(1) For the three and three months ended March 31, 2014 and 2013, a total of 11,100,074 and 20,042,192 potentially dilutive securities have not been included in the diluted weighted average shares as they are anti-dilutive. Potentially anti-dilutive securities include preferred stock, warrants, and unvested restricted stock grants.

Segment_Information_Tables

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Schedule of Segment Reporting Information, by Segment	'
	The following tables summarize Kennedy Wilson’s income activity by segment and corporate for the three months ended March 31, 2014 and 2013 and balance sheet data as of March 31, 2014 and December 31, 2013:
		Three Months Ended March 31,
	(Dollars in millions)	2014			2013
	Investments
	Rental and hotel	$	25.3		$	6.4
	Sale of real estate	11.3			2.4
	Loan and other	1.7			0.4
	Total revenue	38.3			9.2
	Operating expenses	(36.1		)	(12.3		)
	Depreciation and amortization	(7.3		)	(3.1		)
	Income from unconsolidated investments	1.8			2.2
	Operating loss	(3.3		)	(4.0		)
	Acquisition-related gains	84.2			9.5
	Acquisition-related expenses	(4.0		)	—
	Interest expense - investment	(5.3		)	(1.7		)
	Other	0.8			0.2
	Net income	72.4			4
	Net (income) loss attributable to the noncontrolling interests	(37.4		)	1
	Net income attributable to Kennedy-Wilson Holdings, Inc common shareholders	$	35		$	5
		Three Months Ended March 31,
	(Dollars in millions)	2014			2013
	Services
	Investment management, property services, and research fees (includes $7.3 and $8.3 of related party)	$	13.2		$	13.6
	Total revenue	13.2			13.6
	Operating expenses	(11.2		)	(8.5		)
	Income from unconsolidated investments	1			—
	Operating income	3			5.1
	Net income attributable to Kennedy-Wilson Holdings, Inc common shareholders	$	3		$	5.1
		Three Months Ended March 31,
	(Dollars in millions)	2014			2013
	Corporate
	Operating expenses	$	(6.2	)	$	(3.7	)
	Operating loss	(6.2		)	(3.7		)
	Interest expense-corporate	(10.5		)	(9.7		)
	Loss before (provision for) benefit from income taxes	(16.7		)	(13.4		)
	(Provision for) benefit from income taxes	(8.8		)	1.7
	Net loss	(25.5		)	(11.7		)
	Preferred dividends and accretion of preferred stock issuance costs	(2.0		)	(2.0		)
	Net loss attributable to Kennedy-Wilson Holdings, Inc. common shareholders	$	(27.5	)	$	(13.7	)
		Three Months Ended March 31,
	(Dollars in millions)	2014			2013
	Consolidated
	Investment management, property services, and research fees (includes $7.3 and $8.3 of related party)	$	13.2		$	13.6
	Rental and hotel	25.3			6.4
	Sale of real estate	11.3			2.4
	Loans and other	1.7			0.4
	Total revenue	51.5			22.8
	Operating expenses	(53.5		)	(24.5		)
	Depreciation and amortization	(7.3		)	(3.1		)
	Total operating expenses	(60.8		)	(27.6		)
	Income from unconsolidated investments	2.8			2.2
	Operating loss	(6.5		)	(2.6		)
	Acquisition-related gain	84.2			9.5
	Acquisition-related expenses	(4.0		)	—
	Interest expense - investment	(5.3		)	(1.7		)
	Interest expense - corporate	(10.5		)	(9.7		)
	Other	0.8			0.2
	Income (loss) before benefit from income taxes	58.7			(4.3		)
	(Provision for) benefit from income taxes	(8.8		)	1.7
	Net income (loss)	49.9			(2.6		)
	Net (income) loss attributable to the noncontrolling interests	(37.4		)	1
	Preferred dividends and accretion of preferred stock issuance costs	(2.0		)	(2.0		)
	Net income (loss) attributable to Kennedy-Wilson Holdings, Inc. common shareholders	$	10.5		$	(3.6	)
(Dollars in millions)	31-Mar-14			31-Dec-13
Total Assets
Investments	$	4,048.90		$	1,607.50
Services	60.2			49.3
Corporate	298.1			142
Total assets	$	4,407.20		$	1,798.80

Guarantor_and_NonGuarantor_Fin1

Guarantor and Non-Guarantor Financial Statements (Tables)	3 Months Ended
	Mar. 31, 2014
Guarantor and Nonguarantor Financial Statements [Abstract]	'
Condensed Consolidating Balance Sheet	'
	CONDENSED CONSOLIDATING BALANCE SHEET
	AS OF MARCH 31, 2014
	(Dollars in millions)	Parent			Kennedy-Wilson, Inc.			Guarantor Subsidiaries			Non-guarantor Subsidiaries			Elimination			Consolidated Total
	Assets
	Cash held by consolidated investments	$	—		$	—		$	—		$	1,298.70		$	—		$	1,298.70
	Cash and cash equivalents	—			248.3			21.6			4.5			—			274.4
	Accounts receivable	—			—			18.6			9.6			—			28.2
	Loans	—			57.1			182			19.8			(56.7		)	202.2
	Real estate and acquired in place lease values, net of accumulated depreciation and amortization	—			—			198.6			1,680.30			—			1,878.90
	Unconsolidated investments	—			9.6			425.7			184.4			—			619.7
	Other assets	—			22.7			38.9			43.5			—			105.1
	Investments in and advances to consolidated subsidiaries	959.7			1,405.10			727.3			(1.9		)	(3,090.2		)	—
	Total assets	$	959.7		$	1,742.80		$	1,612.70		$	3,238.90		$	(3,146.9	)	$	4,407.20
	Liabilities and equity
	Liabilities
	Accounts payable, accrued expenses and other liabilities	$	9		$	37		$	29.7		$	79		$	—		$	154.7
	Senior notes payable	—			706.1			—			56.7			(56.7		)	706.1
	Investment debt	—			—			175			707.2			—			882.2
	Junior subordinated debentures	—			40			—			—			—			40
	Total liabilities	9			783.1			204.7			842.9			(56.7		)	1,783.00
	Equity
	Kennedy-Wilson Holdings, Inc. shareholders' equity	950.7			959.7			1,405.10			727.3			(3,090.2		)	952.6
	Noncontrolling interests	—			—			2.9			1,668.70			—			1,671.60
	Total equity	950.7			959.7			1,408.00			2,396.00			(3,090.2		)	2,624.20
	Total liabilities and equity	$	959.7		$	1,742.80		$	1,612.70		$	3,238.90		$	(3,146.9	)	$	4,407.20
	CONDENSED CONSOLIDATING BALANCE SHEET
	AS OF DECEMBER 31, 2013
	(Dollars in millions)	Parent			Kennedy-Wilson, Inc.			Guarantor Subsidiaries			Non-guarantor Subsidiaries			Elimination			Consolidated Total
	Assets
	Cash and cash equivalents	$	—		$	48.2		$	77.2		$	44.8		$	—		$	170.2
	Cash held by consolidated investments	—			—			—			8			—			8
	Accounts receivable	—			1.1			7			8.5			—			16.6
	Intercompany receivables	—			9			—			—			(9.0		)	—
	Loans receivable	—			59.7			53.7			0.8			(57.4		)	56.8
	Real estate and acquired in place lease values, net of accumulated depreciation	—			—			145.3			542.8			—			688.1
	Unconsolidated investments	—			7.5			598			180.6			—			786.1
	Investments in and advances to consolidated subsidiaries	775.1			1,141.90			326.6			—			(2,243.6		)	—
	Other assets	—			20.9			31.4			20.7			—			73
	Total assets	$	775.1		$	1,288.30		$	1,239.20		$	806.2		$	(2,310.0	)	$	1,798.80
	Liabilities
	Accounts payable, accrued expense and other liabilities	$	6.8		$	64.2		$	22.9		$	35.2		$	—		129.1
	Intercompany payables	—			—			—			9			(9.0		)	—
	Senior notes payable	—			409			—			—			—			409
	Intercompany loans payable	—			—			—			57.4			(57.4		)	—
	Investment debt	—			—			74.4			327.4			—			401.8
	Junior subordinated debentures	—			40			—			—			—			40
	Total liabilities	6.8			513.2			97.3			429			(66.4		)	979.9
	Equity
	Kennedy-Wilson Holdings, Inc. shareholders' equity	768.3			775.1			1,141.90			326.6			(2,243.6		)	768.3
	Noncontrolling interests	—			—			—			50.6			—			50.6
	Total equity	768.3			775.1			1,141.90			377.2			(2,243.6		)	818.9
	Total liabilities and equity	$	775.1		$	1,288.30		$	1,239.20		$	806.2		$	(2,310.0	)	$	1,798.80
Consolidating Statement of Operations	'
	CONSOLIDATING STATEMENT OF OPERATIONS
	FOR THE THREE MONTHS ENDED MARCH 31, 2014
	(Dollars in millions)	Parent			Kennedy-Wilson, Inc.			Guarantor Subsidiaries			Non-guarantor Subsidiaries			Elimination			Consolidated Total
	Revenue
	Investment management, property services and research fees	$	—		$	0.1		$	13.1		$	—		$	—		$	13.2
	Rental and hotel	—			—			3.4			21.9			—			25.3
	Sale of real estate	—			—			0.7			10.6			—			11.3
	Loans and other	—			0.1			0.5			1.1			—			1.7
	Total revenue	—			0.2			17.7			33.6			—			51.5
	Operating expenses
	Commission and marketing	—			—			0.8			0.2			—			1
	Rental and hotel operating	—			—			1.5			12.6			—			14.1
	Cost of real estate sold	—			—			0.7			9			—			9.7
	Compensation and related	1.7			9.9			7.5			1.4			—			20.5
	General and administrative	—			2.9			4.2			1.1			—			8.2
	Depreciation and amortization	—			0.3			2.2			4.8			—			7.3
	Total operating expenses	1.7			13.1			16.9			29.1			—			60.8
	Income from unconsolidated subsidiaries	—			—			1.7			1.1			—			2.8
	Income from consolidated subsidiaries	51.6			81.9			77			—			(210.5		)	—
	Operating income (loss)	49.9			69			79.5			5.6			(210.5		)	(6.5		)
	Non-operating income (expense)
	Acquisition-related gains	—			—			3.7			80.5			—			84.2
	Acquisition-related expenses	—			—			(0.5		)	(3.5		)	—			(4.0		)
	Interest expense-investment	—			—			—			(5.3		)	—			(5.3		)
	Interest expense-corporate	—			(10.5		)	—			—			—			(10.5		)
	Other income / (expense)	—			2			(1.2		)	—			—			0.8
	Income (loss) before benefit from income taxes	49.9			60.5			81.5			77.3			(210.5		)	58.7
	(Provision for) benefit from income taxes	—			(8.8		)	—			—			—			(8.8		)
	Net income (loss)	49.9			51.7			81.5			77.3			(210.5		)	49.9
	Net (income) loss attributable to the noncontrolling interests	—			—			—			(37.4		)	—			(37.4		)
	Net income (loss) attributable to Kennedy-Wilson Holdings, Inc.	49.9			51.7			81.5			39.9			(210.5		)	12.5
	Preferred dividends and accretion of preferred stock issuance costs	(2.0		)	—			—			—			—			(2.0		)
	Net income (loss) attributable to Kennedy-Wilson Holdings, Inc. common shareholders	$	47.9		$	51.7		$	81.5		$	39.9		$	(210.5	)	$	10.5
	CONSOLIDATING STATEMENT OF OPERATIONS
	FOR THE THREE MONTHS ENDED MARCH 31, 2013
	(Dollars in millions)	Parent			Kennedy-Wilson, Inc.			Guarantor Subsidiaries			Non-guarantor Subsidiaries			Elimination			Consolidated Total
	Revenue
	Investment management, property services, and research fees	$	—		$	—		$	7		$	6.6		$	—		$	13.6
	Rental and hotel	—			—			1.7			4.7			—			6.4
	Sale of real estate	—			—			2.4			—			—			2.4
	Loans and other	—			—			0.4			—			—			0.4
	Total revenue	—			—			11.5			11.3			—			22.8
	Operating expenses
	Commission and marketing	—			0.1			0.4			—			—			0.5
	Rental and hotel operating	—			—			0.9			2.2			—			3.1
	Cost of real estate sold	—			—			1.9			—			—			1.9
	Compensation and related	1.8			4.9			3.6			3.3			—			13.6
	General and administrative	—			2.2			1.3			1.9			—			5.4
	Depreciation and amortization	—			0.1			1.2			1.8			—			3.1
	Total operating expenses	1.8			7.3			9.3			9.2			—			27.6
	Income from unconsolidated investments, net of depreciation and amortization	—			—			3.5			(1.3		)	—			2.2
	Income from consolidated subsidiaries	(0.8		)	14.4			8.8			—			(22.4		)	—
	Operating income (expense)	(2.6		)	7.1			14.5			0.8			(22.4		)	(2.6		)
	Non-operating income (expense)
	Acquisition-related gains	—			—			—			9.5			—			9.5
	Interest expense-investment	—			—			(0.1		)	(1.6		)	—			(1.7		)
	Interest expense-corporate	—			(9.7		)	—			—			—			(9.7		)
	Other income	—			—			0.2			—			—			0.2
	(Loss) income before benefit from income taxes	(2.6		)	(2.6		)	14.6			8.7			(22.4		)	(4.3		)
	Benefit from (provision for) income taxes	—			1.7			—			—			—			1.7
	Net (loss) income	(2.6		)	(0.9		)	14.6			8.7			(22.4		)	(2.6		)
	Net income attributable to the noncontrolling interests	—			—			—			1			—			1
	Net (loss) income attributable to Kennedy-Wilson Holdings, Inc.	(2.6		)	(0.9		)	14.6			9.7			(22.4		)	(1.6		)
Preferred dividends and accretion of preferred stock issuance costs	(2.0		)	—			—			—			—			(2.0		)
Net (loss) income attributable to Kennedy-Wilson Holdings, Inc. common shareholders	$	(4.6	)	$	(0.9	)	$	14.6		$	9.7		$	(22.4	)	$	(3.6	)
Consolidated Statement of Comprehensive Income	'
	CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME
	FOR THE THREE MONTHS ENDED MARCH 31, 2014
	(Dollars in millions)	Parent			Kennedy-Wilson, Inc.			Guarantor Subsidiaries			Non-guarantor Subsidiaries			Elimination			Consolidated Total
	Net (loss) income	$	49.9		$	51.7		$	81.5		$	77.3		$	(210.5	)	$	49.9
	Other comprehensive income (loss), net of tax:
	Unrealized foreign currency translation (loss) gain	(1.2		)	(1.2		)	(5.1		)	(0.9		)	7.2			(1.2		)
	Amounts reclassified out of AOCI during the period	1.2			1.2			—			1.2			(2.4		)	1.2
	Unrealized forward contract foreign currency (loss) gain	(1.5		)	(1.5		)	2.4			—			(0.9		)	(1.5		)
	Total other comprehensive (loss) income for the period	$	(1.5	)	$	(1.5	)	$	(2.7	)	$	0.3		$	3.9		$	(1.5	)
	Comprehensive income	$	48.4		$	50.2		$	78.8		$	77.6		$	(206.6	)	$	48.4
	Comprehensive (income) loss attributable to noncontrolling interests	—			—			—			(37.4		)	—			(37.4		)
	Comprehensive income attributable to Kennedy-Wilson Holdings, Inc.	$	48.4		$	50.2		$	78.8		$	40.2		$	(206.6	)	$	11
	CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME
	FOR THE THREE MONTHS ENDED MARCH 31, 2013
	(Dollars in millions)	Parent			Kennedy-Wilson, Inc.			Guarantor Subsidiaries			Non-guarantor Subsidiaries			Elimination			Consolidated Total
	Net (loss) income	$	(2.6	)	$	(0.9	)	$	14.6		$	8.7		$	(22.4	)	$	(2.6	)
	Other comprehensive income (loss), net of tax:
	Unrealized foreign currency translation gains	(14.4		)	(14.4		)	(12.9		)	(2.0		)	29.3			(14.4		)
	Unrealized forward contract foreign currency loss	3.6			3.6			3.2			—			(6.8		)	3.6
	Total other comprehensive income for the period	$	(10.8	)	$	(10.8	)	$	(9.7	)	$	(2.0	)	$	22.5		$	(10.8	)
	Comprehensive (loss) income	$	(13.4	)	$	(11.7	)	$	4.9		$	6.7		$	0.1		$	(13.4	)
	Comprehensive income attributable to noncontrolling interests	—			—			—			1			—			1
	Comprehensive (loss) income attributable to Kennedy-Wilson Holdings, Inc.	$	(13.4	)	$	(11.7	)	$	4.9		$	7.7		$	0.1		$	(12.4	)
Condensed Consolidated Statement of Cash Flows	'
	CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
	FOR THE THREE MONTHS ENDED MARCH 31, 2014
	(Dollars in millions)	Parent			Kennedy-Wilson, Inc.			Guarantor Subsidiaries			Non-guarantor Subsidiaries			Consolidated Total
	Net cash provided by (used in) operating activities	$	(0.3	)	$	(51.2	)	$	(5.8	)	$	20.4		$	(36.9	)
	Cash flows from investing activities:
	Additions to loans	—			—			(5.7		)	(152.9		)	(158.6		)
	Collections of loans	—			0.1			0.1			—			0.2
	Net proceeds from sale of real estate	—			—			—			10			10
	Purchases of and additions to real estate	—			—			(13.4		)	(354.3		)	(367.7		)
	Distributions from unconsolidated investments	—			—			5.6			5.4			11
	Contributions to unconsolidated investments	—			(2.0		)	(6.8		)	(58.3		)	(67.1		)
	Investment in marketable securities	—			—			(4.5		)	—			(4.5		)
	(Investments in) distributions from consolidated subsidiaries, net	(180.2		)	(37.8		)	(42.9		)	260.9			—
	Net cash (used in) provided by investing activities	(180.2		)	(39.7		)	(67.6		)	(289.2		)	(576.7		)
	Cash flows from financing activities:
	Borrowings under line of credit	—			90			—			—			90
	Repayment of line of credit	—			(90.0		)	—			—			(90.0		)
	Borrowings under mortgage loans payable	—			—			18			177.8			195.8
	Borrowings under senior notes payable	—			297.2			—			—			297.2
	Debt issue costs	—			(6.2		)	(0.2		)	(3.2		)	(9.6		)
	Repayment of mortgage loans payable	—			—			—			(5.5		)	(5.5		)
	Issuance of common stock	190.8			—			—			—			190.8
	Dividends paid	(7.8		)	—			—			—			(7.8		)
	Repurchase of common stock	(2.5		)	—			—			—			(2.5		)
	Proceeds from issuance of KWE shares	—			—			—			1,350.70			1,350.70
	Contributions from noncontrolling interests	—			—			—			2.9			2.9
	Distributions to noncontrolling interests	—			—			—			(2.8		)	(2.8		)
	Net cash provided by (used in) financing activities	180.5			291			17.8			1,519.90			2,009.20
	Effect of currency exchange rate changes on cash and cash equivalents	—			—			—			(0.7		)	(0.7		)
	Net change in cash and cash equivalents	—			200.1			(55.6		)	1,250.40			1,394.90
	Cash and cash equivalents, beginning of year	—			48.2			77.2			52.8			178.2
	Cash and cash equivalents, end of period	$	—		$	248.3		$	21.6		$	1,303.20		$	1,573.10
	CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
	FOR THE THREE MONTHS ENDED MARCH 31, 2013
	(Dollars in millions)	Parent			Kennedy-Wilson, Inc.			Guarantor Subsidiaries			Non-guarantor Subsidiaries			Consolidated Total
	Net cash (used in) provided by operating activities	$	0.1		$	(39.7	)	$	8.3		$	3.7		$	(27.6	)
	Cash flows from investing activities:
	Additions to loans	—			—			(8.2		)	—			(8.2		)
	Proceeds from sale of interest in a entity	—			—			26.7			—			26.7
	Net proceeds from sale of real estate	—			—			3.4			—			3.4
	Purchases of and additions to real estate	—			—			(0.8		)	(14.8		)	(15.6		)
	Distributions from unconsolidated investments	—			—			28.8			—			28.8
	Contributions to unconsolidated investments	—			(2.3		)	(29.2		)	(20.6		)	(52.1		)
	(Investment in) distributions from consolidated subsidiaries, net	0.3			13.7			(43.9		)	29.9			—
	Net cash (used in) provided by investing activities	0.3			11.4			(23.2		)	(5.5		)	(17.0		)
	Cash flows from financing activities:
	Borrowings under line of credit	—			35			—			—			35
	Repayment of lines of credit	—			(35.0		)	—			—			(35.0		)
	Debt issue costs	—			(0.4		)	—			—			(0.4		)
	Repayment of investment debt	—			—			—			(0.1		)	(0.1		)
	Issuance of common stock	133.8			—			—			—			133.8
	Dividends paid	(7.1		)	—			—			—			(7.1		)
	Intercompany receivables, net	—			(2.7		)	—			2.7			—
	Net cash provided by (used in) financing activities	126.7			(3.1		)	—			2.6			126.2
	Effect of currency exchange rate changes on cash and cash equivalents	—			(2.4		)	(0.5		)	(1.2		)	(4.1		)
	Net change in cash and cash equivalents	127.1			(33.8		)	(15.4		)	(0.4		)	77.5
	Cash and cash equivalents, beginning of period	—			64.5			38.5			17.9			120.9
	Cash and cash equivalents, end of period	$	127.1		$	30.7		$	23.1		$	17.5		$	198.4

Basis_of_Presentation_Basis_of

Basis of Presentation Basis of Presentation (Details) (KWE [Member], USD $)	3 Months Ended
	Mar. 31, 2014
KWE [Member]	'
Noncontrolling Interest [Line Items]	'
Proceeds from Issuance Initial Public Offering	$1,700,000,000
Ordinary Shares, Initial Public Offering Share Subscription, Cash	145,200,000
Ordinary Shares, Initial Public Offering Share Subscription, Contribution of Assets	$58,300,000
Ownership percentage by parent	12.20%

Summary_of_Significant_Account2

Summary of Significant Accounting Policies and Adoption of New Accounting Pronouncements (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Accounting Policies [Abstract]	'	'
Accrued Performance Fees	$9.80	$6.10

Loans_Details

Loans (Details) (USD $)	3 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Loans	$202.20		$56.80
Loans b related parties	4.1		4.1
Loans receivable, weighted average interest rate	3.31%		6.18%
Loans Receivable [Member]	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Loans	198.1		52.7
Loans b related parties	4.1		4.1
Total notes receivable including notes receivable related parties	$202.20	[1]	$56.80	[1]
[1]	Loans have a weighted average stated interest rate of 3.31% and 6.18% at March 31, 2014 and December 31, 2013, respectively, and maturity dates ranging from May 2014 to February 2017. Effective interest rates are higher as certain note receivables were acquired at a discount.

Loans_Narrative_Details

Loans (Narrative) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Business Acquisition [Line Items]	'	'
Investment debt balance assumed	$88.50	'
Loan income	1.7	0.4
Hotel Acquired in Ireland [Member]	'	'
Business Acquisition [Line Items]	'	'
Investment debt balance assumed	82.5	'
Hotel Acquired in Ireland [Member] | Notes Receivable [Member]	'	'
Business Acquisition [Line Items]	'	'
Loans acquired	152.4	'
Fair value of loans acquired	$153.60	'

Real_Estate_and_InPlace_Lease_2

Real Estate and In-Place Lease Value (Narrative) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014
	JointVenture
Business Acquisition [Line Items]	'
Number of Joint Venture Investments Consolidated	6
Consoldiated Entity Ownership Percentage	50.00%
Retail Acquired in California [Member]	'
Business Acquisition [Line Items]	'
Square Foot of Retail Center Acquired through Foreclosure	133,000
Acquisition related gain	3.7
Vacant Lot Acquired in California [Member]	'
Business Acquisition [Line Items]	'
Number of acre lot acquired by foreclosure	2.4
Maximum [Member] | Building and Building Improvements [Member]	'
Business Acquisition [Line Items]	'
Property, Plant and Equipment, Useful Life	'40 years

Real_Estate_and_InPlace_Lease_3

Real Estate and In-Place Lease Value (Schedule of Investments in Consolidated Properties) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Real Estate [Abstract]	'	'
Land	$424.50	$187.80
Buildings	1,264.50	484.1
Building improvements	18.6	12.7
In-place lease value	204.1	29.8
Real estate, gross	1,911.70	714.4
Less accumulated depreciation and amortization	-32.8	-26.3
Real estate, net of accumulated depreciation	$1,878.90	$688.10

Real_Estate_and_InPlace_Lease_4

Real Estate and In-Place Lease Value Real Estate and In-Place Lease Value - Schedule of Acquisitions (Details) (USD $)	Mar. 31, 2014	Mar. 31, 2014		Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014		Mar. 31, 2014		Feb. 28, 2014
In Millions, unless otherwise specified		Commercial Acquired in United Kingdom 1 [Member]		Hotel Acquired in Western United States [Member]	Multifamily Acquired in Ireland [Member]	Commercial Acquired in United Kingdom 2 [Member]		Multifamily Acquired in Ireland 2 [Member]		KWE [Member]
		Property		room	penthouse_unit	Property		apartment_unit
					sqft			sqft
					apartment_unit			acre
					Property
Business Acquisition [Line Items]	'	'		'	'	'		'		'
Land	$118.30	$29.70	[1]	$1.30	$0.60	$54	[2]	$32.70	[3]	'
Building	283.8	47.5	[1]	8.3	15.1	132	[2]	80.9	[3]	'
Intangible assets	95.8	40.2	[1]	0	0.4	54	[2]	1.2	[3]	'
Mortgage loans	$88.50	$0	[1]	$0	$9.60	$0	[2]	$78.90	[3]	'
Number of properties acquired	'	14		'	3	26		'		'
Number of rooms acquired	'	'		193	'	'		'		'
Number of apartment units acquired	'	'		'	24	'		281		'
Number of penthouse units acquired	'	'		'	2	'		'		'
Square feet of property acquired	'	'		'	1,000	'		725		'
Number of acres acquired	'	'		'	'	'		7.4		'
Contribution of interest percentage in portfolio	'	'		'	'	'		'		50.00%
[1]	On February 28, 2014, the Company contributed its 50% interest in this portfolio to KWE as part of the Company's investment in KWE's initial public offering.
[2]	This portfolio of properties was acquired by KWE.
[3]	Company entered into a purchase agreement with KWE subsequent to March 31, 2014. See Note 17.

Real_Estate_and_InPlace_Lease_5

Real Estate and In-Place Lease Value Real Estate and In-Place Lease Value - Joint Venture Consolidations (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014
Real Estate Properties [Line Items]	'
Cash	$17.50
Real estate and acquired in-place lease values, net	667.4
Accounts receivable and other assets	14.1
Accounts payable, accrued expenses, and other liabilities	18.4
Mortgage loans	290.3
Noncontrolling interests	206.5
Acquisition related gain	80.5
Multifamily Acquired in Ireland [Member]	'
Real Estate Properties [Line Items]	'
Cash	3.6
Real estate and acquired in-place lease values, net	248.5
Accounts receivable and other assets	0.9
Accounts payable, accrued expenses, and other liabilities	5.4
Mortgage loans	114.3
Noncontrolling interests	66.6
Acquisition related gain	37.8
Number of properties acquired	3
Commercial Acquired in Ireland [Member]	'
Real Estate Properties [Line Items]	'
Cash	4.3
Real estate and acquired in-place lease values, net	223.9
Accounts receivable and other assets	7.6
Accounts payable, accrued expenses, and other liabilities	4.9
Mortgage loans	75.2
Noncontrolling interests	77.9
Acquisition related gain	32.2
Number of properties acquired	2
Commercial and Loan Acquired in UK [Member]	'
Real Estate Properties [Line Items]	'
Cash	9.6
Real estate and acquired in-place lease values, net	195
Accounts receivable and other assets	5.6
Accounts payable, accrued expenses, and other liabilities	8.1
Mortgage loans	100.8
Noncontrolling interests	62
Acquisition related gain	$10.50
Number of properties acquired	2

Real_Estate_and_InPlace_Lease_6

Real Estate and In-Place Lease Value (Schedule of Pro Forma Information) (Details) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Business Acquisition [Line Items]	'	'
Pro forma revenues	$72.70	$34.90
Pro forma net income (loss) attributable to Kennedy-Wilson Holdings, Inc. common shareholders	8.6	-4.3
Earnings Per Share, Pro Forma [Abstract]	'	'
Basic (in dollars per share)	$0.10	($0.07)
Diluted (in dollars per share)	$0.10	($0.07)
2013 Acquisitions [Member]	'	'
Business Acquisition [Line Items]	'	'
Business Acquisition, Pro Forma Equity in Joint Venture Income	($0.70)	$0.70

Unconsolidated_Investments_Nar

Unconsolidated Investments (Narrative) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
	JointVenture
Schedule of Equity Method Investments [Line Items]	'	'	'
Unconsolidated investments	$619.70	'	$786.10
Investments in joint ventures	584.5	'	751.4
Contributions to Acquire Interest in Joint Venture	9.9	'	'
Foreign currency exchange gain (loss)	0.2	-3.9	'
Payments to acquire equity method investment	-71.1	'	'
Proceeds from equity method investments	17.3	'	'
Variable Interest Entity, Not Primary Beneficiary, Disclosures [Abstract]	'	'	'
Unfulfilled capital commitments	12.5	'	'
Unfulfilled capital commitments, number with unfulfilled capital commitments	4	'	'
Investments in loan pool participations	35.2	'	34.7
Performance Guarantee [Member] | Loans Payable [Member]	'	'	'
Variable Interest Entity, Not Primary Beneficiary, Disclosures [Abstract]	'	'	'
Guarantor obligations, maximum exposure	62.6	'	'
Guarantor obligations, maximum exposure, percentage of property level debt	1.00%	'	'
Variable Interest Entity, Not Primary Beneficiary [Member]	'	'	'
Variable Interest Entity, Not Primary Beneficiary, Disclosures [Abstract]	'	'	'
Variable interest entity, number of investments	5	'	'
Variable interest entity, carrying amount assets	184.9	'	'
Variable interest entity, maximum loss exposure	71.1	'	'
Minimum [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Equity method investment, ownership percentage	5.00%	'	'
Maximum [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Equity method investment, ownership percentage	50.00%	'	'
Europe [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Equity method investment, number of investments amended	6	'	'
KW Residential, LLC [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Unconsolidated investments	67.9	'	68.8
Equity method investment, ownership percentage	41.00%	'	'
Number of properties in portfolio	50	'	'
Number of units in portfolio	2,400	'	'
Foreign currency exchange gain (loss)	-1	-4.3	'
Proceeds from equity method investments	$0.40	$13.50	'

Unconsolidated_Investments_Sch

Unconsolidated Investments (Schedule of Unconsolidated Investments) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Equity Method Investments and Joint Ventures [Abstract]	'	'
Investments in joint ventures	$584.50	$751.40
Investments in loan pool participations	35.2	34.7
Total	$619.70	$786.10

Unconsolidated_Investments_Sch1

Unconsolidated Investments (Schedule of Joint Ventures) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	$584.50	$751.40
Western United States [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	405.5	400.6
Japan [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	67.9	68.8
United Kingdom [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	51	110.8
Ireland [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	33.3	144.3
Spain [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	26.8	26.9
Multifamily [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	204.8	250.3
Multifamily [Member] | Western United States [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	136.9	133.3
Multifamily [Member] | Japan [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	67.9	68.8
Multifamily [Member] | United Kingdom [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	0	0
Multifamily [Member] | Ireland [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	0	48.2
Multifamily [Member] | Spain [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	0	0
Commercial [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	243.5	360.9
Commercial [Member] | Western United States [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	159.2	160.3
Commercial [Member] | Japan [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	0	0
Commercial [Member] | United Kingdom [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	51	104.5
Commercial [Member] | Ireland [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	33.3	96.1
Commercial [Member] | Spain [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	0	0
Loan [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	50.7	56.6
Loan [Member] | Western United States [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	50.7	50.3
Loan [Member] | Japan [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	0	0
Loan [Member] | United Kingdom [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	0	6.3
Loan [Member] | Ireland [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	0	0
Loan [Member] | Spain [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	0	0
Residential [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	49	48.7
Residential [Member] | Western United States [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	49	48.7
Residential [Member] | Japan [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	0	0
Residential [Member] | United Kingdom [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	0	0
Residential [Member] | Ireland [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	0	0
Residential [Member] | Spain [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	0	0
Other [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	36.5	34.9
Other [Member] | Western United States [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	9.7	8
Other [Member] | Japan [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	0	0
Other [Member] | United Kingdom [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	0	0
Other [Member] | Ireland [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	0	0
Other [Member] | Spain [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investments in joint ventures	$26.80	$26.90

Unconsolidated_Investments_Cas

Unconsolidated Investments (Cash Distributions KW Residential, LLC) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Schedule of Equity Method Investments [Line Items]	'	'
Operating distributions	$8.50	'
Total	17.3	'
KW Residential, LLC [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Settlement of hedges	0	10.8
Refinancing of property level debt	0	1
Operating distributions	0.4	1.7
Total	$0.40	$13.50

Unconsolidated_Investments_Sch2

Unconsolidated Investments (Schedule of New Joint Venture Investments) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014
	Property
Schedule of Equity Method Investments [Line Items]	'
Equity method investments, number of properties in new joint ventures	15
Payments to acquire equity method investments, new investments	$61.20
Multifamily [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Equity method investments, number of properties in new joint ventures	1
Payments to acquire equity method investments, new investments	4
Commercial [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Equity method investments, number of properties in new joint ventures	14
Payments to acquire equity method investments, new investments	57.2
Western United States [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Equity method investments, number of properties in new joint ventures	1
Payments to acquire equity method investments, new investments	4
Western United States [Member] | Multifamily [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Equity method investments, number of properties in new joint ventures	1
Payments to acquire equity method investments, new investments	4
United Kingdom [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Equity method investments, number of properties in new joint ventures	14
Payments to acquire equity method investments, new investments	57.2
United Kingdom [Member] | Commercial [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Equity method investments, number of properties in new joint ventures	14
Payments to acquire equity method investments, new investments	$57.20

Unconsolidated_Investments_Cas1

Unconsolidated Investments (Cash Distributions by Investment Type and Location) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014
Schedule of Equity Method Investments [Line Items]	'
Operating distributions from unconsolidated investments	$8.50
Distributions from unconsolidated investments	8.8
Multifamily [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Operating distributions from unconsolidated investments	2.7
Distributions from unconsolidated investments	1.5
Commercial [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Operating distributions from unconsolidated investments	5
Distributions from unconsolidated investments	4.4
Residential [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Operating distributions from unconsolidated investments	0.8
Distributions from unconsolidated investments	2.9
Western United States [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Operating distributions from unconsolidated investments	4.6
Distributions from unconsolidated investments	3.4
Western United States [Member] | Multifamily [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Operating distributions from unconsolidated investments	2.3
Distributions from unconsolidated investments	1.5
Western United States [Member] | Commercial [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Operating distributions from unconsolidated investments	1.5
Distributions from unconsolidated investments	0
Western United States [Member] | Residential [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Operating distributions from unconsolidated investments	0.8
Distributions from unconsolidated investments	1.9
Japan [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Operating distributions from unconsolidated investments	0.4
Distributions from unconsolidated investments	0
Japan [Member] | Multifamily [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Operating distributions from unconsolidated investments	0.4
Distributions from unconsolidated investments	0
Japan [Member] | Commercial [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Operating distributions from unconsolidated investments	0
Distributions from unconsolidated investments	0
Japan [Member] | Residential [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Operating distributions from unconsolidated investments	0
Distributions from unconsolidated investments	0
United Kingdom [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Operating distributions from unconsolidated investments	2.3
Distributions from unconsolidated investments	4.4
United Kingdom [Member] | Multifamily [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Operating distributions from unconsolidated investments	0
Distributions from unconsolidated investments	0
United Kingdom [Member] | Commercial [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Operating distributions from unconsolidated investments	2.3
Distributions from unconsolidated investments	4.4
United Kingdom [Member] | Residential [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Operating distributions from unconsolidated investments	0
Distributions from unconsolidated investments	0
Ireland [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Operating distributions from unconsolidated investments	1.2
Distributions from unconsolidated investments	0
Ireland [Member] | Multifamily [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Operating distributions from unconsolidated investments	0
Distributions from unconsolidated investments	0
Ireland [Member] | Commercial [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Operating distributions from unconsolidated investments	1.2
Distributions from unconsolidated investments	0
Ireland [Member] | Residential [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Operating distributions from unconsolidated investments	0
Distributions from unconsolidated investments	0
Other [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Operating distributions from unconsolidated investments	0
Distributions from unconsolidated investments	1
Other [Member] | Multifamily [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Operating distributions from unconsolidated investments	0
Distributions from unconsolidated investments	0
Other [Member] | Commercial [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Operating distributions from unconsolidated investments	0
Distributions from unconsolidated investments	0
Other [Member] | Residential [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Operating distributions from unconsolidated investments	0
Distributions from unconsolidated investments	$1

Unconsolidated_Investments_Sch3

Unconsolidated Investments (Schedule of Investments in Loan Pools) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Initial Unpaid Principal Balance	$4,039.60	[1]	'
Unpaid Principal Balance	806	[1]	'
Kennedy Wilson Initial Equity Invested	150		'
Investment Balance at March 31, 2014	35.2		34.7
Expected Accretion Over Total Estimated Collection Period	41.4		'
Accreted to Date	32.2		'
February 2010 [Member] | U.S. Loan Pool 1 [Member] | Western United States [Member]	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Kennedy Wilson Ownership	15.00%	[2]	'
Initial Unpaid Principal Balance	342.4	[1],[2]	'
Unpaid Principal Balance	'	[1],[2]	'
Kennedy Wilson Initial Equity Invested	11.1	[2]	'
Investment Balance at March 31, 2014	0.6	[2]	'
Expected Accretion Over Total Estimated Collection Period	4.6	[2]	'
Accreted to Date	4.6	[2]	'
December 2011 [Member] | UK Loan Pool 1 [Member] | United Kingdom [Member]	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Kennedy Wilson Ownership	12.50%		'
Initial Unpaid Principal Balance	2,174.60	[1]	'
Unpaid Principal Balance	31.8	[1]	'
Kennedy Wilson Initial Equity Invested	61.2		'
Investment Balance at March 31, 2014	'		'
Expected Accretion Over Total Estimated Collection Period	19.2		'
Accreted to Date	19.2		'
April 2012 [Member] | U.S. Loan Pool 2 [Member] | Western United States [Member]	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Kennedy Wilson Ownership	75.00%		'
Initial Unpaid Principal Balance	43.4	[1]	'
Unpaid Principal Balance	2.8	[1]	'
Kennedy Wilson Initial Equity Invested	30.9		'
Investment Balance at March 31, 2014	2.3		'
Expected Accretion Over Total Estimated Collection Period	4.3		'
Accreted to Date	3.9		'
August 2012 [Member] | Irish Loan Pool 1 [Member] | Ireland [Member]	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Kennedy Wilson Ownership	10.00%		'
Initial Unpaid Principal Balance	496.6	[1]	'
Unpaid Principal Balance	347.6	[1]	'
Kennedy Wilson Initial Equity Invested	7		'
Investment Balance at March 31, 2014	8.4		'
Expected Accretion Over Total Estimated Collection Period	1.7		'
Accreted to Date	0.6		'
December 2012 [Member] | UK Loan Pool 2 [Member] | United Kingdom [Member]	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Kennedy Wilson Ownership	5.00%		'
Initial Unpaid Principal Balance	646.7	[1]	'
Unpaid Principal Balance	150.1	[1]	'
Kennedy Wilson Initial Equity Invested	19.3		'
Investment Balance at March 31, 2014	4.4		'
Expected Accretion Over Total Estimated Collection Period	4		'
Accreted to Date	2.2		'
April 2013 [Member] | UK Loan Pool 3 [Member] | United Kingdom [Member]	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Kennedy Wilson Ownership	10.00%		'
Initial Unpaid Principal Balance	193.8	[1]	'
Unpaid Principal Balance	131.6	[1]	'
Kennedy Wilson Initial Equity Invested	13		'
Investment Balance at March 31, 2014	11		'
Expected Accretion Over Total Estimated Collection Period	3.2		'
Accreted to Date	0.9		'
August 2013 [Member] | UK Loan Pool 4 [Member] | United Kingdom [Member]	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Kennedy Wilson Ownership	20.00%		'
Initial Unpaid Principal Balance	142.1	[1]	'
Unpaid Principal Balance	142.1	[1]	'
Kennedy Wilson Initial Equity Invested	7.5		'
Investment Balance at March 31, 2014	8.5		'
Expected Accretion Over Total Estimated Collection Period	4.4		'
Accreted to Date	$0.80		'
United Kingdom, Pounds	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Foreign currency exchange rate	0.6		'
Euro Member Countries, Euro	'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Foreign currency exchange rate	0.73		'
[1]	Estimated foreign exchange rate is £0.60 =1 USD and €0.73 =1 USD.
[2]	Equity invested represents guarantee claims against note holders in loan pool.

Unconsolidated_Investments_Sch4

Unconsolidated Investments (Schedule of Interest Income and Foreign Currency Gain) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Equity Method Investments and Joint Ventures [Abstract]	'	'
Income from unconsolidated investments	$2.10	$2.50
Foreign currency translation gain (loss)	0.2	-3.9
Total	$2.30	($1.40)

Fair_Value_Measurements_Schedu

Fair Value Measurements (Schedule of Fair Value Measurements) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Unconsolidated investments	$82	$81.10
Recurring [Member] | Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	8.5	4
Unconsolidated investments	0	'
Currency forward contract	0	'
Assets, fair value disclosure	8.5	4
Recurring [Member] | Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	0	'
Unconsolidated investments	0	'
Currency forward contract	-11.2	-9.6
Assets, fair value disclosure	-11.2	-9.6
Recurring [Member] | Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	0	'
Unconsolidated investments	82	81.1
Currency forward contract	0	'
Assets, fair value disclosure	82	81.1
Recurring [Member] | Total [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	8.5	4
Unconsolidated investments	82	81.1
Currency forward contract	-11.2	-9.6
Assets, fair value disclosure	$79.30	$75.50

Fair_Value_Measurements_Invest

Fair Value Measurements (Investments in Joint Ventures) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]	'	'
Unconsolidated investments	$82	$81.10
Equity Method Investments [Member]	'	'
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]	'	'
Fair value option, number of investments	2	2
FV Option	47.5	47.6
Equity Method Investments [Member]	'	'
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]	'	'
The funds, unfunded commitments	5.4	'
Funds	34.5	33.5
Recurring [Member] | Level 3 [Member]	'	'
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]	'	'
Unconsolidated investments	$82	$81.10

Fair_Value_Measurements_Schedu1

Fair Value Measurements (Schedule of Changes in Level 3 Investments) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Jun. 30, 2013	Sep. 30, 2012	Jun. 30, 2012
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]	'	'	'	'	'
Beginning balance	'	'	$81.10	$68.40	$68.40
Unrealized and realized gains	0	0	'	'	'
Unrealized and realized losses	0	0	'	'	'
Contributions	1.3	0.2	'	'	'
Distributions	-0.4	-0.2	'	'	'
Ending balance	$82	'	$81.10	$68.40	$68.40

Fair_Value_Measurements_Schedu2

Fair Value Measurements (Schedule of Significant Inputs) (Details)	3 Months Ended
	Mar. 31, 2014
Minimum [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Entity Credit Risk	1.75%
Maximum [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Entity Credit Risk	12.00%
Office [Member] | Minimum [Member] | Income and Market Approach Technique [Member] | Level 3 [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Capitalization Rates	6.00%
Discount Rates	7.00%
Office [Member] | Maximum [Member] | Income and Market Approach Technique [Member] | Level 3 [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Capitalization Rates	7.50%
Discount Rates	9.75%
Retail [Member] | Minimum [Member] | Income and Market Approach Technique [Member] | Level 3 [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Capitalization Rates	6.00%
Discount Rates	9.00%
Retail [Member] | Maximum [Member] | Income and Market Approach Technique [Member] | Level 3 [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Capitalization Rates	10.00%
Discount Rates	12.00%
Hotel [Member] | Income and Market Approach Technique [Member] | Level 3 [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Capitalization Rates	6.50%
Hotel [Member] | Minimum [Member] | Income and Market Approach Technique [Member] | Level 3 [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Discount Rates	8.00%
Multifamily [Member] | Minimum [Member] | Income and Market Approach Technique [Member] | Level 3 [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Capitalization Rates	5.75%
Discount Rates	7.50%
Multifamily [Member] | Maximum [Member] | Income and Market Approach Technique [Member] | Level 3 [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Capitalization Rates	6.75%
Discount Rates	9.00%
Loans [Member] | Minimum [Member] | Income and Market Approach Technique [Member] | Level 3 [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Discount Rates	1.75%
Loans [Member] | Maximum [Member] | Income and Market Approach Technique [Member] | Level 3 [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Discount Rates	12.00%
Land and condominium units [Member] | Minimum [Member] | Income and Market Approach Technique [Member] | Level 3 [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Discount Rates	8.00%
Land and condominium units [Member] | Maximum [Member] | Income and Market Approach Technique [Member] | Level 3 [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Discount Rates	12.00%

Fair_Value_Measurements_Deriva

Fair Value Measurements (Derivatives Financial Instruments) (Details) (Foreign Exchange Forward [Member])

3 Months Ended

3 Months Ended

3 Months Ended

3 Months Ended

In Millions, unless otherwise specified

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

USD ($)

Net Investment Hedging [Member]

Net Investment Hedging [Member]

Euro Member Countries, Euro

Euro Member Countries, Euro

Euro Member Countries, Euro

Euro Member Countries, Euro

Euro Member Countries, Euro

United Kingdom, Pounds

United Kingdom, Pounds

United Kingdom, Pounds

United Kingdom, Pounds

United Kingdom, Pounds

USD ($)

Other Comprehensive Income (Loss) [Member]

Net Investment Hedging [Member]

Net Investment Hedging [Member]

Net Investment Hedging [Member]

Minimum [Member]

Maximum [Member]

Net Investment Hedging [Member]

Net Investment Hedging [Member]

Net Investment Hedging [Member]

Minimum [Member]

Maximum [Member]

USD ($)

16.0 Million Euros Current Forward Contract Settlement Date 6/4/2015 [Member]

16.0 Million Euros Current Forward Contract Settlement Date 6/4/2015 [Member]

Other Comprehensive Income (Loss) [Member]

Net Investment Hedging [Member]

Net Investment Hedging [Member]

20.0 Million Euros Current Forward Contract Settlement Date 5/10/2016 [Member]

20.0 Million Euros Current Forward Contract Settlement Date 5/10/2016 [Member]

Other Comprehensive Income (Loss) [Member]

Net Investment Hedging [Member]

Net Investment Hedging [Member]

USD ($)

EUR (€)

16.0 Million Euros Current Forward Contract Settlement Date 6/4/2015 [Member]

16.0 Million Euros Current Forward Contract Settlement Date 6/4/2015 [Member]

16.0 Million Euros Current Forward Contract Settlement Date 6/4/2015 [Member]

USD ($)

GBP (£)

20.0 Million Euros Current Forward Contract Settlement Date 5/10/2016 [Member]

20.0 Million Euros Current Forward Contract Settlement Date 5/10/2016 [Member]

20.0 Million Euros Current Forward Contract Settlement Date 5/10/2016 [Member]

USD ($)

USD ($)

Derivative [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair Value, Liabilities Measured on Recurring Basis, Change in Unrealized Gain (Loss)

$0.80

'

'

'

'

'

'

'

'

'

'

'

'

Notional Amount

'

'

'

'

129.3

'

'

'

'

95.5

'

'

'

Exchange Rate

'

'

'

'

'

'

1.24

1.3312

'

'

'

1.5479

1.5522

Fair Value

'

-11.2

'

-6.9

'

'

'

'

-4.3

'

'

'

'

Change in Unrealized Gains (Losses)

'

'

($1.60)

'

'

$0.10

'

'

'

'

($1.70)

'

'

Fair_Value_Measurements_Fair_V

Fair Value Measurements (Fair Value of Financial Instruments) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Fair Value Disclosures [Abstract]	'	'
Long-term debt fair value	$1,662.80	$878.20
Long-term debt	$1,628.30	$850.80

Other_Assets_Details

Other Assets (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Other Assets [Abstract]	'	'
Goodwill	$23.90	$23.90
Loan fees, net of accumulated amortization of $5.2 million and $4.5 million at March 31, 2014 and December 31, 2013, respectively	22.9	14.1
Accumulated amortization, loan fees	5.2	4.5
Deposits and other, net of accumulated amortization of $1.5 million and $1.2 million at March 31, 2014 and December 31, 2013, respectively	11.8	13
Accumulated amortization, deposits and other	1.3	1.2
Prepaid expenses	9	7.6
Marketable securities	8.5	4
Other Assets	105.1	73
Furniture and Fixtures [Member]	'	'
Other Assets [Abstract]	'	'
Office furniture and equipment net of accumulated depreciation of $2.5 million and $2.2 million at March 31, 2014 and December 31, 2013, respectively	9.6	10.4
Accumulated amortization, office furniture and equipment	2.5	2.2
Above Market Leases [Member]	'	'
Other Assets [Abstract]	'	'
Above-market leases	$19.40	$0

Investment_Debt_Details

Investment Debt (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Dec. 31, 2013
	Loan
Debt Instrument [Line Items]	'		'
Long-term debt	$1,628.30		$850.80
Number of loans	7		'
Ireland [Member]	'		'
Debt Instrument [Line Items]	'		'
Number of buildings acquired through change in control	3		'
Number of buildings acquired	2		'
Mortgage Loans and Notes Payable [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	882.2		'
Debt unamortized premium	12.9		'
Mortgage Loans Payable [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	882.2	[1]	401.8	[1]
Debt unamortized premium	12.9		5.3
Weighted average interest rate	4.35%		4.13%
Mortgage Loans Payable [Member] | Mortgage Loans Secured by Multi-Family Properties [Member] | Western United States [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	260.2	[2]	261	[2]
Mortgage Loans Payable [Member] | Mortgage Loans Secured by Multi-Family Properties [Member] | Ireland [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	202.8	[2]	0	[2]
Mortgage Loans Payable [Member] | Mortgage Loans Secured by Commerical Buildings [Member] | Western United States [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	128.2		110.4
Mortgage Loans Payable [Member] | Mortgage Loans Secured by Commerical Buildings [Member] | Japan [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	2.4		2.4
Mortgage Loans Payable [Member] | Mortgage Loans Secured by Commerical Buildings [Member] | Ireland [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	75.2	[2]	0	[2]
Mortgage Loans Payable [Member] | Mortgage Loans Secured by Commerical Buildings [Member] | United Kingdom [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	94.9	[2]	0	[2]
Mortgage Loans Payable [Member] | Mortgage Loans Secured by Residential Buildings [Member] | Western United States [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	30		28
Mortgage Loans Payable [Member] | Mortgage Loans Secured by Notes Receivable [Member] | Ireland [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	82.5	[2]	0	[2]
Mortgage Loans Payable [Member] | Mortgage Loans Secured by Notes Receivable [Member] | United Kingdom [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt	$6	[2]	$0	[2]
[1]	The investment debt had a weighted average interest rate of 4.35% and 4.13% at MarchB 31, 2014 and DecemberB 31, 2013.
[2]	The investment debt balances include the unamortized debt premiums. Debt premiums represent the excess of the fair value of debt over the principal value of debt assumed in various acquisitions and are amortized into interest expense over the remaining term of the related debt in a manner that approximates the effective interest method. The unamortized loan premium as of MarchB 31, 2014 and DecemberB 31, 2013 was $12.9 million and $5.3 million, respectively.

Investment_Debt_Schedule_of_Ma

Investment Debt (Schedule of Maturities) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Debt Instrument [Line Items]	'	'
Carrying Value	$1,628.30	$850.80
Mortgage Loans and Notes Payable [Member]	'	'
Debt Instrument [Line Items]	'	'
2014	26.9	'
2015	118.7	'
2015	51.8	'
2016	146.7	'
2017	86.7	'
Thereafter	438.5	'
Long-term debt gross	869.3	'
Debt premium	12.9	'
Carrying Value	$882.20	'

Senior_Notes_Narrative_Details

Senior Notes (Narrative) (Details) (Senior Notes [Member], USD $)	Mar. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]	'	'
Face Value	$705,000,000	$405,000,000
Balance sheet leverage ratio	0.78	'
Maximum [Member]	'	'
Debt Instrument [Line Items]	'	'
Balance sheet leverage ratio	1.5	'
5.875% Senior Notes Dues April 2024 [Member]	'	'
Debt Instrument [Line Items]	'	'
Interest Rate	5.88%	'
Face Value	$300,000,000	$0
Public offering price percentage of principal amount	99.07%	'

Senior_Notes_Schedule_of_Senio

Senior Notes (Schedule of Senior Notes) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]	'	'
Carrying Value	$1,628,300,000	$850,800,000
Senior Notes [Member]	'	'
Debt Instrument [Line Items]	'	'
Face Value	705,000,000	405,000,000
Unamortized Premium/(Discount)	1,100,000	4,000,000
Carrying Value	706,100,000	409,000,000
Senior Notes [Member] | 7.75% Senior Notes Due 2042 [Member]	'	'
Debt Instrument [Line Items]	'	'
Interest Rate	7.75%	'
Face Value	55,000,000	55,000,000
Unamortized Premium/(Discount)	0	0
Carrying Value	55,000,000	55,000,000
Senior Notes [Member] | 5.875% Senior Notes Dues April 2024 [Member]	'	'
Debt Instrument [Line Items]	'	'
Interest Rate	5.88%	'
Face Value	300,000,000	0
Unamortized Premium/(Discount)	-2,800,000	0
Carrying Value	297,200,000	'
Senior Notes [Member] | 8.75% Senior Notes, Due 2019 [Member]	'	'
Debt Instrument [Line Items]	'	'
Interest Rate	8.75%	'
Face Value	350,000,000	350,000,000
Unamortized Premium/(Discount)	3,900,000	4,000,000
Carrying Value	$353,900,000	$354,000,000

Line_of_Credit_Details

Line of Credit (Details) (USD $)	3 Months Ended		1 Months Ended	3 Months Ended			3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Sep. 30, 2013	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014
			Unsecured Debt [Member]	Unsecured Debt [Member]	Unsecured Debt [Member]	Unsecured Debt [Member]	Unsecured Debt [Member]
			U.S. Bank and East-West Bank [Member]	U.S. Bank and East-West Bank [Member]	U.S. Bank and East-West Bank [Member]	U.S. Bank and East-West Bank [Member]	U.S. Bank and East-West Bank [Member]
			Revolving Credit Facility [Member]	Revolving Credit Facility [Member]	Revolving Credit Facility [Member]	Revolving Credit Facility [Member]	Revolving Credit Facility [Member]
					Minimum [Member]	Maximum [Member]	LIBOR [Member]
Line of Credit Facility [Line Items]	'	'	'	'	'	'	'
Increase in maximum borrowing capacity	'	'	$40,000,000	'	'	'	'
Maximum borrowing capacity	'	'	140,000,000	'	'	'	'
Basis spread on variable rate	'	'	'	'	'	'	2.75%
Rent adjusted fixed charge coverage ratio	'	'	'	3.01	1.5	'	'
Balance sheet leverage ratio	'	'	'	0.82	'	1.5	'
Covenant, tangible net worth	'	'	'	905,700,000	250,000,000	'	'
Line Of Credit Facility Covenant Compliance Minimum Requirement Of Unrestricted Cash Cash Equivalents And Publicly Traded Marketable Securities	'	'	'	1,573,100,000	40,000,000	'	'
Borrowings under line of credit	90,000,000	35,000,000	'	90,000,000	'	'	'
Maximum amount drawn on the unsecured credit facility at any one point	'	'	'	90,000,000	'	'	'
Remaining borrowing capacity	'	'	'	$140,000,000	'	'	'

Junior_Subordinated_Debentures1

Junior Subordinated Debentures (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2007	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Dec. 31, 2007	Dec. 31, 2007
			Junior Subordinated Debentures [Member]	Junior Subordinated Debentures [Member]	Junior Subordinated Debentures [Member]	Junior Subordinated Debentures [Member]	Junior Subordinated Debentures [Member]	Trust Preferred Securities [Member]
					Minimum [Member]	Maximum [Member]	LIBOR [Member]
Debt Instrument [Line Items]	'	'	'	'	'	'	'	'
Junior subordinated debentures	$40,000,000	$40,000,000	$40,000,000	'	'	'	'	$40,000,000
Debt Instrument, Term	'	'	'10 years	'	'	'	'	'
Fixed rate	'	'	9.06%	'	'	'	'	'
Basis spread on variable rate	'	'	'	'	'	'	3.70%	'
Fixed charge coverage ratio	'	'	'	3.64	1.75	'	'	'
Total debt to net worth	'	'	'	1.71	'	3	'	'
Covenant, percent of net income	'	'	'	'	50.00%	'	'	'
Covenant, percent of all proceeds of equity interests	'	'	'	'	50.00%	'	'	'
Covenant, net worth	'	'	'	952,500,000	75,000,000	'	'	'
Covenant, net worth after net worth exceeds seventy five million	'	'	'	'	40,000,000	'	'	'
Covenant, tangible net worth	'	'	'	$901,900,000	$15,000,000	'	'	'
Covenant, percent of net income, until net worth exceeds seventy five million	'	'	'	'	60.00%	'	'	'

Stockholders_Equity_Common_Sto

Stockholders Equity (Common Stock) (Details) (USD $)	1 Months Ended	3 Months Ended
In Millions, unless otherwise specified	Jan. 31, 2014	Mar. 31, 2014	Mar. 31, 2013
Equity [Abstract]	'	'	'
Issuance of common stock	9.2	'	'
Proceeds from issuance of common stock	$190.80	$190.80	$133.80

Stockholders_Equity_Dividend_D

Stockholders Equity (Dividend Distributions) (Details) (USD $)	3 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Dividends Payable [Line Items]	'		'
Preferred Stock, Declared	$2		$2
Common stock, Declared	8.2	[1]	5.1	[1]
Total, Declared	10.2	[2]	7.1	[2]
Preferred Stock, Paid	2		2
Common Stock, Paid	5.8	[1]	5.1	[1]
Total, Paid	7.8	[2]	7.1	[2]
Common Stock, Par or Stated Value Per Share	$0.00		'
Common Stock, Shares Authorized	125,000,000		125,000,000
Cumulative preferred stock subject to mandatory redemption SeriesA [Member]	'		'
Dividends Payable [Line Items]	'		'
Preferred Stock, Dividend Rate, Percentage	6.00%		'
Preferred Stock, Shares Issued	100,000		100,000
Preferred Stock, Shares Outstanding	100,000		100,000
Cumulative preferred stock subject to mandatory redemption Series B [Member]	'		'
Dividends Payable [Line Items]	'		'
Preferred Stock, Dividend Rate, Percentage	6.45%		'
Preferred Stock, Shares Issued	32,550		32,550
Preferred Stock, Shares Outstanding	32,550		32,550
Series A Preferred Stock [Member]	'		'
Dividends Payable [Line Items]	'		'
Preferred Stock, Declared	1.5	[3]	1.5	[3]
Preferred Stock, Paid	1.5	[3]	1.5	[3]
Series B Preferred Stock [Member]	'		'
Dividends Payable [Line Items]	'		'
Preferred Stock, Declared	0.5	[4]	0.5	[4]
Preferred Stock, Paid	$0.50	[4]	$0.50	[4]
[1]	$0.0001 par value per share, 125,000,000 shares authorized as of MarchB 31, 2014 and 2013, respectively.
[2]	Common stock dividends are declared at the end of each quarter and paid in the following quarter. The amount declared and not paid is accrued on the consolidated balance sheet.
[3]	Series A, 100,000 shares issued and outstanding as of MarchB 31, 2014 and 2013, respectively, mandatorily convertible on May 19, 2015.
[4]	Series B, 32,550 shares issued and outstanding as of MarchB 31, 2014 and 2013, respectively, mandatorily convertible on November 3, 2018.

Stockholders_Equity_Stock_Comp

Stockholders Equity (Stock Compensation) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'	'
Share-based compensation expense	$1.70	$1.80

Stockholders_Equity_Accumulate

Stockholders Equity (Accumulated Other Comprehensive Income) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Estimated tax rate	40.00%
Accumulated Other Comprehensive Income (Loss) [Roll Forward]	'
Balance at December 31, 2013	$9.20
Unrealized losses, arising during the period	-3.6
Amounts reclassified out of AOCI during the period	1.2
Taxes on unrealized losses, arising during the period	0.9
Balance at March 31, 2014	7.7
Foreign Currency Translation [Member]	'
Accumulated Other Comprehensive Income (Loss) [Roll Forward]	'
Balance at December 31, 2013	4.3
Unrealized losses, arising during the period	-1.2
Amounts reclassified out of AOCI during the period	1.2
Taxes on unrealized losses, arising during the period	0
Balance at March 31, 2014	4.3
Forward Contract Foreign Currency [Member]	'
Accumulated Other Comprehensive Income (Loss) [Roll Forward]	'
Balance at December 31, 2013	4.9
Unrealized losses, arising during the period	-2.4
Amounts reclassified out of AOCI during the period	0
Taxes on unrealized losses, arising during the period	0.9
Balance at March 31, 2014	$3.40

Stockholders_Equity_Derivative

Stockholders Equity (Derivative) (Details) (Foreign Exchange Forward [Member], Other Comprehensive Income (Loss) [Member], Net Investment Hedging [Member], USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014
Derivative [Line Items]	'
Derivative, gain (loss) recognized in OCI	($1.60)
Japan, Yen	'
Derivative [Line Items]	'
Derivative, gain (loss) recognized in OCI	-0.8
Euro Member Countries, Euro | 16.0 Million Euros Current Forward Contract Settlement Date 6/4/2015 [Member]	'
Derivative [Line Items]	'
Derivative, gain (loss) recognized in OCI	0.1
United Kingdom, Pounds | 20.0 Million Euros Current Forward Contract Settlement Date 5/10/2016 [Member]	'
Derivative [Line Items]	'
Derivative, gain (loss) recognized in OCI	($1.70)

Stockholders_Equity_Stockholde

Stockholders' Equity Stockholders' Equity (Noncontrolling Interests) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
	JointVenture
Noncontrolling Interest [Line Items]	'	'
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	$2.90	'
Number of Joint Venture Investments Consolidated	6	'
Consolidation of noncontrolling interests (Note 4)	167.9	'
Noncontrolling interests	1,671.60	50.6
KWE [Member]	'	'
Noncontrolling Interest [Line Items]	'	'
Ownership percentage by parent	12.20%	'
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	1,409.10	'
Noncontrolling Interest [Member]	'	'
Noncontrolling Interest [Line Items]	'	'
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	2.9	'
Consolidation of noncontrolling interests (Note 4)	167.9	'
Noncontrolling interests	1,671.60	50.6
Noncontrolling Interest [Member] | KWE [Member]	'	'
Noncontrolling Interest [Line Items]	'	'
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	1,415.60	'
Additional Paid-in Capital [Member] | KWE [Member]	'	'
Noncontrolling Interest [Line Items]	'	'
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	($6.50)	'

Earnings_Per_Share_Details

Earnings Per Share (Details) (USD $)	3 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Earnings Per Share [Abstract]	'		'
Net income (loss) attributable to Kennedy-Wilson Holdings, Inc. common shareholders	$10.50		($3.60)
Allocation to participating securities:	'		'
Net income allocated to participating securities	'		0
Dividends declared on participating securities	-0.2		-0.3
Net income (loss) attributable to Kennedy-Wilson Holdings, Inc. common shareholders, net of allocation to participating securities	10.3		-3.9
Dividends declared on common shares	-8		-4.8
Undistributed earnings attributable to Kennedy-Wilson Holdings, Inc. common shareholders, net of allocation to participating securities	$2.30		($8.70)
Distributed earnings per share (in dollars per share)	$0.09		$0.07
Undistributed earnings per share (in dollars per share)	$0.03		($0.13)
Income (loss) per basic (in dollars per share)	$0.12		($0.06)
Income (loss) per diluted (in dollars per share)	$0.12		($0.06)
Weighted average shares outstanding for basic (in shares)	88,142,576		61,853,258
Weighted average shares outstanding for diluted (in shares)	89,422,885	[1]	61,853,258	[1]
Dividends declared per common share (in dollars per share)	$0.09		$0.07
Potentially dilutive securities (in shares)	11,100,074		20,042,192
[1]	For the three and three months ended MarchB 31, 2014 and 2013, a total of 11,100,074 and 20,042,192 potentially dilutive securities have not been included in the diluted weighted average shares as they are anti-dilutive. Potentially anti-dilutive securities include preferred stock, warrants, and unvested restricted stock grants.

Segment_Information_Details

Segment Information (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
	segment
	sqft
	office
Segment Reporting Information [Line Items]	'	'	'
Number of Operating Segments	2	'	'
Average Ownership Interest in Investments	34.00%	'	'
Area of real estate property	68,000,000	'	'
Number of Offices	24	'	'
Investment management, property services and research fees (includes $7.3 and $8.3 of related party fees)	$13.20	$13.60	'
Investment management, property services, and research feesb related party	7.3	8.3	'
Rental and hotel	25.3	6.4	'
Sale of real estate	11.3	2.4	'
Loans and other	1.7	0.4	'
Total revenue	51.5	22.8	'
Operating expenses	-53.5	-24.5	'
Depreciation and amortization	-7.3	-3.1	'
Total operating expenses	60.8	27.6	'
Income from unconsolidated investments	2.8	2.2	'
Operating loss	-6.5	-2.6	'
Acquisition-related gains	84.2	9.5	'
Acquisition-related expenses	-4	0	'
Interest expense-investment	-5.3	-1.7	'
Interest expense-corporate	-10.5	-9.7	'
Other income	0.8	0.2	'
Income (loss) before (provision for) benefit from income taxes	58.7	-4.3	'
(Provision for) benefit from income taxes	-8.8	1.7	'
Net income (loss)	49.9	-2.6	'
Net (income) loss attributable to the noncontrolling interests	-37.4	1	'
Preferred dividends and accretion of preferred stock issuance costs	-2	-2	'
Net (loss) income attributable to Kennedy-Wilson Holdings, Inc. common shareholders	10.5	-3.6	'
Total assets	4,407.20	'	1,798.80
Investments [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Rental and hotel	25.3	6.4	'
Sale of real estate	11.3	2.4	'
Loans and other	1.7	0.4	'
Total revenue	38.3	9.2	'
Operating expenses	-36.1	-12.3	'
Depreciation and amortization	-7.3	-3.1	'
Income from unconsolidated investments	1.8	2.2	'
Operating loss	-3.3	-4	'
Acquisition-related gains	84.2	9.5	'
Acquisition-related expenses	-4	0	'
Interest expense-investment	-5.3	-1.7	'
Other income	0.8	0.2	'
Net income (loss)	72.4	4	'
Net (income) loss attributable to the noncontrolling interests	-37.4	1	'
Net (loss) income attributable to Kennedy-Wilson Holdings, Inc. common shareholders	35	5	'
Total assets	4,048.90	'	1,607.50
Services [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Investment management, property services and research fees (includes $7.3 and $8.3 of related party fees)	13.2	13.6	'
Total revenue	13.2	13.6	'
Operating expenses	-11.2	-8.5	'
Income from unconsolidated investments	1	0	'
Operating loss	3	5.1	'
Net (loss) income attributable to Kennedy-Wilson Holdings, Inc. common shareholders	3	5.1	'
Total assets	60.2	'	49.3
Corporate [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Operating expenses	-6.2	-3.7	'
Operating loss	-6.2	-3.7	'
Interest expense-corporate	-10.5	-9.7	'
Income (loss) before (provision for) benefit from income taxes	-16.7	-13.4	'
(Provision for) benefit from income taxes	-8.8	1.7	'
Net income (loss)	-25.5	-11.7	'
Preferred dividends and accretion of preferred stock issuance costs	-2	-2	'
Net (loss) income attributable to Kennedy-Wilson Holdings, Inc. common shareholders	-27.5	-13.7	'
Total assets	$298.10	'	$142

Income_Taxes_Details

Income Taxes (Details)	3 Months Ended
	Mar. 31, 2014
U.S. Federal [Member]	'
Income Taxes [Line Items]	'
Federal statutory rate	34.00%
Foreign Tax Authority [Member] | Ireland [Member]	'
Income Taxes [Line Items]	'
Federal statutory rate	12.50%
Foreign Tax Authority [Member] | United Kingdom [Member]	'
Income Taxes [Line Items]	'
Federal statutory rate	21.00%

Guarantor_and_NonGuarantor_Fin2

Guarantor and Non-Guarantor Financial Statements (Balance Sheets) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Assets	'	'
Cash held by consolidated investments	$1,298,700,000	$8,000,000
Cash and cash equivalents	274,400,000	170,200,000
Accounts receivable	28,200,000	16,600,000
Intercompany receivables	0	0
Loans	202,200,000	56,800,000
Real estate and acquired in place lease values, net of accumulated depreciation	1,878,900,000	688,100,000
Unconsolidated investments	619,700,000	786,100,000
Investments in and advances to consolidated subsidiaries	'	0
Other assets	105,100,000	73,000,000
Total assets	4,407,200,000	1,798,800,000
Liabilities	'	'
Accounts payable, accrued expenses and other liabilities	154,700,000	129,100,000
Intercompany payables	'	0
Senior notes payable	706,100,000	409,000,000
Intercompany loans payable	'	0
Investment debt	882,200,000	401,800,000
Junior subordinated debentures	40,000,000	40,000,000
Total liabilities	1,783,000,000	979,900,000
Equity	'	'
Kennedy-Wilson Holdings, Inc. shareholders' equity	952,600,000	768,300,000
Noncontrolling interests	1,671,600,000	50,600,000
Total equity	2,624,200,000	818,900,000
Total liabilities and equity	4,407,200,000	1,798,800,000
Parent [Member]	'	'
Assets	'	'
Cash held by consolidated investments	0	0
Cash and cash equivalents	0	0
Accounts receivable	0	0
Intercompany receivables	959,700,000	0
Loans	0	0
Real estate and acquired in place lease values, net of accumulated depreciation	0	0
Unconsolidated investments	0	0
Investments in and advances to consolidated subsidiaries	'	775,100,000
Other assets	0	0
Total assets	959,700,000	775,100,000
Liabilities	'	'
Accounts payable, accrued expenses and other liabilities	9,000,000	6,800,000
Intercompany payables	'	0
Senior notes payable	0	0
Intercompany loans payable	'	0
Investment debt	0	0
Junior subordinated debentures	0	0
Total liabilities	9,000,000	6,800,000
Equity	'	'
Kennedy-Wilson Holdings, Inc. shareholders' equity	950,700,000	768,300,000
Noncontrolling interests	0	0
Total equity	950,700,000	768,300,000
Total liabilities and equity	959,700,000	775,100,000
Kennedy-Wilson, Inc. [Member]	'	'
Assets	'	'
Cash held by consolidated investments	0	0
Cash and cash equivalents	248,300,000	48,200,000
Accounts receivable	0	1,100,000
Intercompany receivables	1,405,100,000	9,000,000
Loans	57,100,000	59,700,000
Real estate and acquired in place lease values, net of accumulated depreciation	0	0
Unconsolidated investments	9,600,000	7,500,000
Investments in and advances to consolidated subsidiaries	'	1,141,900,000
Other assets	22,700,000	20,900,000
Total assets	1,742,800,000	1,288,300,000
Liabilities	'	'
Accounts payable, accrued expenses and other liabilities	37,000,000	64,200,000
Intercompany payables	'	0
Senior notes payable	706,100,000	409,000,000
Intercompany loans payable	'	0
Investment debt	0	0
Junior subordinated debentures	40,000,000	40,000,000
Total liabilities	783,100,000	513,200,000
Equity	'	'
Kennedy-Wilson Holdings, Inc. shareholders' equity	959,700,000	775,100,000
Noncontrolling interests	0	0
Total equity	959,700,000	775,100,000
Total liabilities and equity	1,742,800,000	1,288,300,000
Guarantor Subsidiaries [Member]	'	'
Assets	'	'
Cash held by consolidated investments	0	0
Cash and cash equivalents	21,600,000	77,200,000
Accounts receivable	18,600,000	7,000,000
Intercompany receivables	727,300,000	0
Loans	182,000,000	53,700,000
Real estate and acquired in place lease values, net of accumulated depreciation	198,600,000	145,300,000
Unconsolidated investments	425,700,000	598,000,000
Investments in and advances to consolidated subsidiaries	'	326,600,000
Other assets	38,900,000	31,400,000
Total assets	1,612,700,000	1,239,200,000
Liabilities	'	'
Accounts payable, accrued expenses and other liabilities	29,700,000	22,900,000
Intercompany payables	'	0
Senior notes payable	0	0
Intercompany loans payable	'	0
Investment debt	175,000,000	74,400,000
Junior subordinated debentures	0	0
Total liabilities	204,700,000	97,300,000
Equity	'	'
Kennedy-Wilson Holdings, Inc. shareholders' equity	1,405,100,000	1,141,900,000
Noncontrolling interests	2,900,000	0
Total equity	1,408,000,000	1,141,900,000
Total liabilities and equity	1,612,700,000	1,239,200,000
Non-Guarantor Subsidiaries [Member]	'	'
Assets	'	'
Cash held by consolidated investments	1,298,700,000	8,000,000
Cash and cash equivalents	4,500,000	44,800,000
Accounts receivable	9,600,000	8,500,000
Intercompany receivables	-1,900,000	0
Loans	19,800,000	800,000
Real estate and acquired in place lease values, net of accumulated depreciation	1,680,300,000	542,800,000
Unconsolidated investments	184,400,000	180,600,000
Investments in and advances to consolidated subsidiaries	'	0
Other assets	43,500,000	20,700,000
Total assets	3,238,900,000	806,200,000
Liabilities	'	'
Accounts payable, accrued expenses and other liabilities	79,000,000	35,200,000
Intercompany payables	'	9,000,000
Senior notes payable	56,700,000	0
Intercompany loans payable	'	57,400,000
Investment debt	707,200,000	327,400,000
Junior subordinated debentures	0	0
Total liabilities	842,900,000	429,000,000
Equity	'	'
Kennedy-Wilson Holdings, Inc. shareholders' equity	727,300,000	326,600,000
Noncontrolling interests	1,668,700,000	50,600,000
Total equity	2,396,000,000	377,200,000
Total liabilities and equity	3,238,900,000	806,200,000
Eliminations [Member]	'	'
Assets	'	'
Cash held by consolidated investments	0	0
Cash and cash equivalents	0	0
Accounts receivable	0	0
Intercompany receivables	-3,090,200,000	-9,000,000
Loans	-56,700,000	-57,400,000
Real estate and acquired in place lease values, net of accumulated depreciation	0	0
Unconsolidated investments	0	0
Investments in and advances to consolidated subsidiaries	'	-2,243,600,000
Other assets	0	0
Total assets	-3,146,900,000	-2,310,000,000
Liabilities	'	'
Accounts payable, accrued expenses and other liabilities	0	0
Intercompany payables	'	-9,000,000
Senior notes payable	-56,700,000	0
Intercompany loans payable	'	-57,400,000
Investment debt	0	0
Junior subordinated debentures	0	0
Total liabilities	-56,700,000	-66,400,000
Equity	'	'
Kennedy-Wilson Holdings, Inc. shareholders' equity	-3,090,200,000	-2,243,600,000
Noncontrolling interests	0	0
Total equity	-3,090,200,000	-2,243,600,000
Total liabilities and equity	($3,146,900,000)	($2,310,000,000)

Guarantor_and_NonGuarantor_Fin3

Guarantor and Non-Guarantor Financial Statements (Income Statements) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Revenue	'	'
Investment management, property services and research fees (includes $7.3 and $8.3 of related party fees)	$13.20	$13.60
Rental and hotel	25.3	6.4
Sale of real estate	11.3	2.4
Loans and other	1.7	0.4
Total revenue	51.5	22.8
Operating expenses	'	'
Commission and marketing	1	0.5
Rental and hotel operating	14.1	3.1
Cost of real estate sold	9.7	1.9
Compensation and related	20.5	13.6
General and administrative	8.2	5.4
Depreciation and amortization	7.3	3.1
Total operating expenses	60.8	27.6
Income from unconsolidated investments	2.8	2.2
(Loss) income from consolidated subsidiaries	0	0
Operating loss	-6.5	-2.6
Non-operating income (expense)	'	'
Acquisition-related gains	84.2	9.5
Acquisition-related expenses	-4	0
Interest expense-investment	-5.3	-1.7
Interest expense-corporate	-10.5	-9.7
Other income	0.8	0.2
Income (loss) before (provision for) benefit from income taxes	58.7	-4.3
(Provision for) benefit from income taxes	-8.8	1.7
Net income (loss)	49.9	-2.6
Net income attributable to the noncontrolling interests	-37.4	1
Net loss attributable to Kennedy-Wilson Holdings, Inc.	12.5	-1.6
Preferred dividends and accretion of preferred stock issuance costs	-2	-2
Net (loss) income attributable to Kennedy-Wilson Holdings, Inc. common shareholders	10.5	-3.6
Parent [Member]	'	'
Revenue	'	'
Investment management, property services and research fees (includes $7.3 and $8.3 of related party fees)	0	0
Rental and hotel	0	0
Sale of real estate	0	0
Loans and other	0	0
Total revenue	0	0
Operating expenses	'	'
Commission and marketing	0	0
Rental and hotel operating	0	0
Cost of real estate sold	0	0
Compensation and related	1.7	1.8
General and administrative	0	0
Depreciation and amortization	0	0
Total operating expenses	1.7	1.8
Income from unconsolidated investments	0	0
(Loss) income from consolidated subsidiaries	51.6	-0.8
Operating loss	49.9	-2.6
Non-operating income (expense)	'	'
Acquisition-related gains	0	0
Acquisition-related expenses	0	'
Interest expense-investment	0	0
Interest expense-corporate	0	0
Other income	0	0
Income (loss) before (provision for) benefit from income taxes	49.9	-2.6
(Provision for) benefit from income taxes	0	0
Net income (loss)	49.9	-2.6
Net income attributable to the noncontrolling interests	0	0
Net loss attributable to Kennedy-Wilson Holdings, Inc.	49.9	-2.6
Preferred dividends and accretion of preferred stock issuance costs	-2	-2
Net (loss) income attributable to Kennedy-Wilson Holdings, Inc. common shareholders	47.9	-4.6
Kennedy-Wilson, Inc. [Member]	'	'
Revenue	'	'
Investment management, property services and research fees (includes $7.3 and $8.3 of related party fees)	0.1	0
Rental and hotel	0	0
Sale of real estate	0	0
Loans and other	0.1	0
Total revenue	0.2	0
Operating expenses	'	'
Commission and marketing	0	0.1
Rental and hotel operating	0	0
Cost of real estate sold	0	0
Compensation and related	9.9	4.9
General and administrative	2.9	2.2
Depreciation and amortization	0.3	0.1
Total operating expenses	13.1	7.3
Income from unconsolidated investments	0	0
(Loss) income from consolidated subsidiaries	81.9	14.4
Operating loss	69	7.1
Non-operating income (expense)	'	'
Acquisition-related gains	0	0
Acquisition-related expenses	0	'
Interest expense-investment	0	0
Interest expense-corporate	-10.5	-9.7
Other income	2	0
Income (loss) before (provision for) benefit from income taxes	60.5	-2.6
(Provision for) benefit from income taxes	-8.8	1.7
Net income (loss)	51.7	-0.9
Net income attributable to the noncontrolling interests	0	0
Net loss attributable to Kennedy-Wilson Holdings, Inc.	51.7	-0.9
Preferred dividends and accretion of preferred stock issuance costs	0	0
Net (loss) income attributable to Kennedy-Wilson Holdings, Inc. common shareholders	51.7	-0.9
Guarantor Subsidiaries [Member]	'	'
Revenue	'	'
Investment management, property services and research fees (includes $7.3 and $8.3 of related party fees)	13.1	7
Rental and hotel	3.4	1.7
Sale of real estate	0.7	2.4
Loans and other	0.5	0.4
Total revenue	17.7	11.5
Operating expenses	'	'
Commission and marketing	0.8	0.4
Rental and hotel operating	1.5	0.9
Cost of real estate sold	0.7	1.9
Compensation and related	7.5	3.6
General and administrative	4.2	1.3
Depreciation and amortization	2.2	1.2
Total operating expenses	16.9	9.3
Income from unconsolidated investments	1.7	3.5
(Loss) income from consolidated subsidiaries	77	8.8
Operating loss	79.5	14.5
Non-operating income (expense)	'	'
Acquisition-related gains	3.7	0
Acquisition-related expenses	-0.5	'
Interest expense-investment	0	-0.1
Interest expense-corporate	0	0
Other income	-1.2	0.2
Income (loss) before (provision for) benefit from income taxes	81.5	14.6
(Provision for) benefit from income taxes	0	0
Net income (loss)	81.5	14.6
Net income attributable to the noncontrolling interests	0	0
Net loss attributable to Kennedy-Wilson Holdings, Inc.	81.5	14.6
Preferred dividends and accretion of preferred stock issuance costs	0	0
Net (loss) income attributable to Kennedy-Wilson Holdings, Inc. common shareholders	81.5	14.6
Non-Guarantor Subsidiaries [Member]	'	'
Revenue	'	'
Investment management, property services and research fees (includes $7.3 and $8.3 of related party fees)	0	6.6
Rental and hotel	21.9	4.7
Sale of real estate	10.6	0
Loans and other	1.1	0
Total revenue	33.6	11.3
Operating expenses	'	'
Commission and marketing	0.2	0
Rental and hotel operating	12.6	2.2
Cost of real estate sold	9	0
Compensation and related	1.4	3.3
General and administrative	1.1	1.9
Depreciation and amortization	4.8	1.8
Total operating expenses	29.1	9.2
Income from unconsolidated investments	1.1	-1.3
(Loss) income from consolidated subsidiaries	0	0
Operating loss	5.6	0.8
Non-operating income (expense)	'	'
Acquisition-related gains	80.5	9.5
Acquisition-related expenses	-3.5	'
Interest expense-investment	-5.3	-1.6
Interest expense-corporate	0	0
Other income	0	0
Income (loss) before (provision for) benefit from income taxes	77.3	8.7
(Provision for) benefit from income taxes	0	0
Net income (loss)	77.3	8.7
Net income attributable to the noncontrolling interests	-37.4	1
Net loss attributable to Kennedy-Wilson Holdings, Inc.	39.9	9.7
Preferred dividends and accretion of preferred stock issuance costs	0	0
Net (loss) income attributable to Kennedy-Wilson Holdings, Inc. common shareholders	39.9	9.7
Eliminations [Member]	'	'
Revenue	'	'
Investment management, property services and research fees (includes $7.3 and $8.3 of related party fees)	0	0
Rental and hotel	0	0
Sale of real estate	0	0
Loans and other	0	0
Total revenue	0	0
Operating expenses	'	'
Commission and marketing	0	0
Rental and hotel operating	0	0
Cost of real estate sold	0	0
Compensation and related	0	0
General and administrative	0	0
Depreciation and amortization	0	0
Total operating expenses	0	0
Income from unconsolidated investments	0	0
(Loss) income from consolidated subsidiaries	-210.5	-22.4
Operating loss	-210.5	-22.4
Non-operating income (expense)	'	'
Acquisition-related gains	0	0
Interest expense-investment	0	0
Interest expense-corporate	0	0
Other income	0	0
Income (loss) before (provision for) benefit from income taxes	-210.5	-22.4
(Provision for) benefit from income taxes	0	0
Net income (loss)	-210.5	-22.4
Net income attributable to the noncontrolling interests	0	0
Net loss attributable to Kennedy-Wilson Holdings, Inc.	-210.5	-22.4
Preferred dividends and accretion of preferred stock issuance costs	0	0
Net (loss) income attributable to Kennedy-Wilson Holdings, Inc. common shareholders	($210.50)	($22.40)

Guarantor_and_NonGuarantor_Fin4

Guarantor and Non-Guarantor Financial Statements (Comprehensive Income) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Condensed Financial Statements, Captions [Line Items]	'	'
Net income	$49.90	($2.60)
Other comprehensive income (loss), net of tax:	'	'
Unrealized foreign currency translation loss	-1.2	-14.4
Amounts reclassified out of AOCI during the period	1.2	0
Unrealized forward contract, foreign currency (loss) gain	-1.5	3.6
Total other comprehensive loss for the period	-1.5	-10.8
Comprehensive income (loss)	48.4	-13.4
Comprehensive (income) loss attributable to noncontrolling interests	-37.4	1
Comprehensive income (loss) attributable to Kennedy-Wilson Holdings, Inc.	11	-12.4
Parent [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net income	49.9	-2.6
Other comprehensive income (loss), net of tax:	'	'
Unrealized foreign currency translation loss	-1.2	-14.4
Amounts reclassified out of AOCI during the period	1.2	'
Unrealized forward contract, foreign currency (loss) gain	-1.5	3.6
Total other comprehensive loss for the period	-1.5	-10.8
Comprehensive income (loss)	48.4	-13.4
Comprehensive (income) loss attributable to noncontrolling interests	0	0
Comprehensive income (loss) attributable to Kennedy-Wilson Holdings, Inc.	48.4	-13.4
Kennedy-Wilson, Inc. [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net income	51.7	-0.9
Other comprehensive income (loss), net of tax:	'	'
Unrealized foreign currency translation loss	-1.2	-14.4
Amounts reclassified out of AOCI during the period	1.2	'
Unrealized forward contract, foreign currency (loss) gain	-1.5	3.6
Total other comprehensive loss for the period	-1.5	-10.8
Comprehensive income (loss)	50.2	-11.7
Comprehensive (income) loss attributable to noncontrolling interests	0	0
Comprehensive income (loss) attributable to Kennedy-Wilson Holdings, Inc.	50.2	-11.7
Guarantor Subsidiaries [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net income	81.5	14.6
Other comprehensive income (loss), net of tax:	'	'
Unrealized foreign currency translation loss	-5.1	-12.9
Amounts reclassified out of AOCI during the period	0	'
Unrealized forward contract, foreign currency (loss) gain	2.4	3.2
Total other comprehensive loss for the period	-2.7	-9.7
Comprehensive income (loss)	78.8	4.9
Comprehensive (income) loss attributable to noncontrolling interests	0	0
Comprehensive income (loss) attributable to Kennedy-Wilson Holdings, Inc.	78.8	4.9
Non-Guarantor Subsidiaries [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net income	77.3	8.7
Other comprehensive income (loss), net of tax:	'	'
Unrealized foreign currency translation loss	-0.9	-2
Amounts reclassified out of AOCI during the period	1.2	'
Unrealized forward contract, foreign currency (loss) gain	0	0
Total other comprehensive loss for the period	0.3	-2
Comprehensive income (loss)	77.6	6.7
Comprehensive (income) loss attributable to noncontrolling interests	-37.4	1
Comprehensive income (loss) attributable to Kennedy-Wilson Holdings, Inc.	40.2	7.7
Eliminations [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net income	-210.5	-22.4
Other comprehensive income (loss), net of tax:	'	'
Unrealized foreign currency translation loss	7.2	29.3
Amounts reclassified out of AOCI during the period	-2.4	'
Unrealized forward contract, foreign currency (loss) gain	-0.9	-6.8
Total other comprehensive loss for the period	3.9	22.5
Comprehensive income (loss)	-206.6	0.1
Comprehensive (income) loss attributable to noncontrolling interests	0	0
Comprehensive income (loss) attributable to Kennedy-Wilson Holdings, Inc.	($206.60)	$0.10

Guarantor_and_NonGuarantor_Fin5

Guarantor and Non-Guarantor Financial Statements (Cash Flows) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Condensed Financial Statements, Captions [Line Items]	'		'
Net cash provided by (used in) operating activities	($36.90)		($27.60)
Cash flows from investing activities:	'		'
Additions to loans	-158.6		-8.2
Collections of loans	0.2		0
Proceeds from sale of interest in an entity	0		26.7
Net proceeds from sale of real estate	10		3.4
Purchases of and additions to real estate	-367.7		-15.6
Distributions from unconsolidated investments	11		28.8
Contributions to unconsolidated investments	67.1		52.1
Investment in marketable securities	-4.5		0
(Investments in) distributions from consolidated subsidiaries, net	0		0
Net cash used in investing activities	-576.7		-17
Cash flows from financing activities:	'		'
Borrowings under line of credit	90		35
Repayment of line of credit	-90		-35
Borrowings under investment debt	195.8		0
Borrowings under senior notes payable	297.2		0
Debt issue costs	-9.6		-0.4
Repayment of investment debt	-5.5		-0.1
Issuance of common stock	190.8		133.8
Dividends paid	-7.8	[1]	-7.1	[1]
Repurchase and retirement of common stock	-2.5		0
Proceeds from the issuance of KWE shares, net	1,350.70		0
Intercompany receivables, net	'		0
Contributions from noncontrolling interests, excluding KWE	2.9		0
Distributions to noncontrolling interests	-2.8		0
Net cash provided by financing activities	2,009.20		126.2
Effect of currency exchange rate changes on cash and cash equivalents	-0.7		-4.1
Net change in cash and cash equivalents	1,394.90		77.5
Cash and cash equivalents, end of period	1,573.10		198.4
Cash and cash equivalents, beginning of period	178.2		120.9
Parent [Member]	'		'
Condensed Financial Statements, Captions [Line Items]	'		'
Net cash provided by (used in) operating activities	-0.3		0.1
Cash flows from investing activities:	'		'
Additions to loans	0		0
Collections of loans	0		'
Proceeds from sale of interest in an entity	'		0
Net proceeds from sale of real estate	0		0
Purchases of and additions to real estate	0		0
Distributions from unconsolidated investments	0		0
Contributions to unconsolidated investments	0		0
Investment in marketable securities	0		'
(Investments in) distributions from consolidated subsidiaries, net	-180.2		0.3
Net cash used in investing activities	-180.2		0.3
Cash flows from financing activities:	'		'
Borrowings under line of credit	0		0
Repayment of line of credit	0		0
Borrowings under investment debt	0		'
Borrowings under senior notes payable	0		'
Debt issue costs	0		0
Repayment of investment debt	0		0
Issuance of common stock	190.8		133.8
Dividends paid	-7.8		-7.1
Repurchase and retirement of common stock	-2.5		'
Proceeds from the issuance of KWE shares, net	0		'
Intercompany receivables, net	'		0
Contributions from noncontrolling interests, excluding KWE	0		'
Distributions to noncontrolling interests	0		'
Net cash provided by financing activities	180.5		126.7
Effect of currency exchange rate changes on cash and cash equivalents	0		0
Net change in cash and cash equivalents	0		127.1
Cash and cash equivalents, end of period	0		127.1
Cash and cash equivalents, beginning of period	0		0
Kennedy-Wilson, Inc. [Member]	'		'
Condensed Financial Statements, Captions [Line Items]	'		'
Net cash provided by (used in) operating activities	-51.2		-39.7
Cash flows from investing activities:	'		'
Additions to loans	0		0
Collections of loans	0.1		'
Proceeds from sale of interest in an entity	'		0
Net proceeds from sale of real estate	0		0
Purchases of and additions to real estate	0		0
Distributions from unconsolidated investments	0		0
Contributions to unconsolidated investments	2		2.3
Investment in marketable securities	0		'
(Investments in) distributions from consolidated subsidiaries, net	-37.8		13.7
Net cash used in investing activities	-39.7		11.4
Cash flows from financing activities:	'		'
Borrowings under line of credit	90		35
Repayment of line of credit	-90		-35
Borrowings under investment debt	0		'
Borrowings under senior notes payable	297.2		'
Debt issue costs	-6.2		-0.4
Repayment of investment debt	0		0
Issuance of common stock	0		0
Dividends paid	0		0
Repurchase and retirement of common stock	0		'
Proceeds from the issuance of KWE shares, net	0		'
Intercompany receivables, net	'		-2.7
Contributions from noncontrolling interests, excluding KWE	0		'
Distributions to noncontrolling interests	0		'
Net cash provided by financing activities	291		-3.1
Effect of currency exchange rate changes on cash and cash equivalents	0		-2.4
Net change in cash and cash equivalents	200.1		-33.8
Cash and cash equivalents, end of period	248.3		30.7
Cash and cash equivalents, beginning of period	48.2		64.5
Guarantor Subsidiaries [Member]	'		'
Condensed Financial Statements, Captions [Line Items]	'		'
Net cash provided by (used in) operating activities	-5.8		8.3
Cash flows from investing activities:	'		'
Additions to loans	-5.7		-8.2
Collections of loans	0.1		'
Proceeds from sale of interest in an entity	'		26.7
Net proceeds from sale of real estate	0		3.4
Purchases of and additions to real estate	-13.4		-0.8
Distributions from unconsolidated investments	5.6		28.8
Contributions to unconsolidated investments	6.8		29.2
Investment in marketable securities	-4.5		'
(Investments in) distributions from consolidated subsidiaries, net	-42.9		-43.9
Net cash used in investing activities	-67.6		-23.2
Cash flows from financing activities:	'		'
Borrowings under line of credit	0		0
Repayment of line of credit	0		0
Borrowings under investment debt	18		'
Borrowings under senior notes payable	0		'
Debt issue costs	-0.2		0
Repayment of investment debt	0		0
Issuance of common stock	0		0
Dividends paid	0		0
Repurchase and retirement of common stock	0		'
Proceeds from the issuance of KWE shares, net	0		'
Intercompany receivables, net	'		0
Contributions from noncontrolling interests, excluding KWE	0		'
Distributions to noncontrolling interests	0		'
Net cash provided by financing activities	17.8		0
Effect of currency exchange rate changes on cash and cash equivalents	0		-0.5
Net change in cash and cash equivalents	-55.6		-15.4
Cash and cash equivalents, end of period	21.6		23.1
Cash and cash equivalents, beginning of period	77.2		38.5
Non-Guarantor Subsidiaries [Member]	'		'
Condensed Financial Statements, Captions [Line Items]	'		'
Net cash provided by (used in) operating activities	20.4		3.7
Cash flows from investing activities:	'		'
Additions to loans	-152.9		0
Collections of loans	0		'
Proceeds from sale of interest in an entity	'		0
Net proceeds from sale of real estate	10		0
Purchases of and additions to real estate	-354.3		-14.8
Distributions from unconsolidated investments	5.4		0
Contributions to unconsolidated investments	58.3		20.6
Investment in marketable securities	0		'
(Investments in) distributions from consolidated subsidiaries, net	260.9		29.9
Net cash used in investing activities	-289.2		-5.5
Cash flows from financing activities:	'		'
Borrowings under line of credit	0		0
Repayment of line of credit	0		0
Borrowings under investment debt	177.8		'
Borrowings under senior notes payable	0		'
Debt issue costs	-3.2		0
Repayment of investment debt	-5.5		-0.1
Issuance of common stock	0		0
Dividends paid	0		0
Repurchase and retirement of common stock	0		'
Proceeds from the issuance of KWE shares, net	1,350.70		'
Intercompany receivables, net	'		2.7
Contributions from noncontrolling interests, excluding KWE	2.9		'
Distributions to noncontrolling interests	-2.8		'
Net cash provided by financing activities	1,519.90		2.6
Effect of currency exchange rate changes on cash and cash equivalents	-0.7		-1.2
Net change in cash and cash equivalents	1,250.40		-0.4
Cash and cash equivalents, end of period	1,303.20		17.5
Cash and cash equivalents, beginning of period	$52.80		$17.90
[1]	Common stock dividends are declared at the end of each quarter and paid in the following quarter. The amount declared and not paid is accrued on the consolidated balance sheet.

Guarantor_and_NonGuarantor_Fin6

Guarantor and Non-Guarantor Financial Statements Guarantor and Non-Guarantor Financial Statements (Details)	3 Months Ended
	Mar. 31, 2014
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'
Consoldiated Entity Ownership Percentage	100.00%

Subsequent_Events_Details

Subsequent Events (Details) (Subsequent Event [Member])

9-May-14

9-May-14

9-May-14

9-May-14

9-May-14

9-May-14

9-May-14

9-May-14

9-May-14

9-May-14

9-May-14

9-May-14

9-May-14

In Millions, unless otherwise specified

USD ($)

EUR (€)

Opera Portfolio [Member]

Opera Portfolio [Member]

Central Park Portfolio [Member]

Central Park Portfolio [Member]

Office Building [Member]

Dublin, Ireland [Member]

Dublin, Ireland [Member]

Dublin, Ireland [Member]

Dublin, Ireland [Member]

Dublin, Ireland [Member]

Cork, Ireland [Member]

USD ($)

EUR (€)

USD ($)

EUR (€)

Opera Portfolio [Member]

Retail [Member]

Residential [Member]

Commercial Real Estate [Member]

Partially Completed Residential Development [Member]

Commercial Real Estate in Partially Completed Residential Development [Member]

Retail [Member]

Property

Opera Portfolio [Member]

Central Park Portfolio [Member]

Central Park Portfolio [Member]

Central Park Portfolio [Member]

Central Park Portfolio [Member]

Opera Portfolio [Member]

Property

residential_unit

sqft

residential_unit

sqft

Property

Subsequent Event [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of properties in portfolio

'

'

'

'

'

'

7

6

'

'

'

'

1

Total sales price

'

'

$541.70

€ 391.40

$121.90

€ 88.10

'

'

'

'

'

'

'

Equity method investment, cash

130.7

94.4

269.7

194.9

42.5

30.7

'

'

'

'

'

'

'

Equity method investment, debt

'

'

272

196.5

79.4

57.4

'

'

'

'

'

'

'

Equity method investment, number of units in portfolio

'

'

'

'

'

'

'

'

272

'

166

'

'

Equity method investment, square feet in portfolio

'

'

'

'

'

'

'

'

'

31,000

'

14,800

'

Ownership percentage sold

'

'

25.00%

25.00%

'

'

'

'

'

'

'

'

'

Entitled promotion fee

'

'

$20.80

€ 15

'

'

'

'

'

'

'

'

'