GUARANTOR AND NON-GUARANTOR FINANCIAL STATEMENTS - Condensed Consolidating Statements of Cash Flows (Details) - USD ($) $ in Millions |
12 Months Ended |
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Condensed Financial Statements, Captions [Line Items] |
|
|
|
Net cash provided by operating activities |
$ 73.0
|
$ 102.9
|
$ 178.2
|
Cash flows from investing activities: |
|
|
|
Additions to loans |
|
(16.1)
|
(235.8)
|
Collections of loans |
16.9
|
146.9
|
27.8
|
Nonrefundable escrow deposits |
0.0
|
0.0
|
(3.8)
|
Net proceeds from sale of real estate |
659.1
|
540.1
|
622.6
|
Purchases of and additions to real estate |
(814.3)
|
(949.6)
|
(1,927.6)
|
Investment in marketable securities |
(0.8)
|
(3.2)
|
(5.0)
|
Proceeds from sale of marketable securities |
1.1
|
0.0
|
6.2
|
Investing distributions from unconsolidated investments |
133.4
|
89.6
|
180.0
|
Contributions to unconsolidated investments |
(79.9)
|
(124.9)
|
(184.3)
|
Proceeds from settlement of foreign currency derivative contracts |
(2.8)
|
38.6
|
41.5
|
Purchases of foreign currency derivative contracts |
(0.4)
|
(8.1)
|
(5.2)
|
Additions to development project asset |
(19.4)
|
0.0
|
0.0
|
Proceeds from development project asset |
36.9
|
0.0
|
0.0
|
(Investments in) distributions from consolidated subsidiaries, net |
0.0
|
0.0
|
0.0
|
Net cash used in investing activities |
(70.2)
|
(286.7)
|
(1,483.6)
|
Cash flow from financing activities: |
|
|
|
Borrowings under senior notes payable |
0.0
|
250.0
|
0.0
|
Repayment of senior notes payable |
(55.0)
|
0.0
|
0.0
|
Costs associated with KWE Transaction |
(55.8)
|
0.0
|
0.0
|
Borrowings under lines of credit |
800.0
|
125.0
|
95.0
|
Repayment of lines of credit |
(500.0)
|
(125.0)
|
(220.0)
|
Borrowings under investment debt |
848.3
|
1,189.7
|
2,087.9
|
Repayment of investment debt |
(684.7)
|
(608.1)
|
(681.1)
|
Debt issue costs |
(9.5)
|
(10.8)
|
(21.7)
|
Issuance of common stock |
0.0
|
0.0
|
215.0
|
Repurchase of common stock |
(67.7)
|
(64.8)
|
(11.4)
|
Cash paid to acquire noncontrolling interest in KWE |
(719.8)
|
0.0
|
0.0
|
Dividends paid |
(59.2)
|
(64.8)
|
(51.8)
|
Acquisition of noncontrolling interests |
(3.3)
|
(196.9)
|
(68.4)
|
Contributions from noncontrolling interests |
47.4
|
42.1
|
14.5
|
Distributions to noncontrolling interests |
(106.0)
|
(116.6)
|
(239.2)
|
Net cash (used in) provided by financing activities |
(565.3)
|
419.8
|
1,118.8
|
Effect of currency exchange rate changes on cash and cash equivalents |
28.1
|
(81.9)
|
(19.5)
|
Net change in cash and cash equivalents |
(534.4)
|
154.1
|
(206.1)
|
Cash and cash equivalents, beginning of year |
885.7
|
731.6
|
937.7
|
Cash and cash equivalents, end of year |
351.3
|
885.7
|
731.6
|
Reportable Legal Entities [Member] | Parent [Member] |
|
|
|
Condensed Financial Statements, Captions [Line Items] |
|
|
|
Net cash provided by operating activities |
(15.3)
|
(0.2)
|
5.3
|
Cash flows from investing activities: |
|
|
|
Additions to loans |
|
0.0
|
0.0
|
Collections of loans |
0.0
|
0.0
|
0.0
|
Nonrefundable escrow deposits |
|
|
0.0
|
Net proceeds from sale of real estate |
0.0
|
0.0
|
0.0
|
Purchases of and additions to real estate |
0.0
|
0.0
|
0.0
|
Investment in marketable securities |
0.0
|
0.0
|
0.0
|
Proceeds from sale of marketable securities |
0.0
|
|
0.0
|
Investing distributions from unconsolidated investments |
0.0
|
0.0
|
0.0
|
Contributions to unconsolidated investments |
0.0
|
0.0
|
0.0
|
Proceeds from settlement of foreign currency derivative contracts |
0.0
|
0.0
|
0.0
|
Purchases of foreign currency derivative contracts |
0.0
|
0.0
|
0.0
|
Additions to development project asset |
0.0
|
|
|
Proceeds from development project asset |
0.0
|
|
|
(Investments in) distributions from consolidated subsidiaries, net |
198.0
|
129.8
|
(157.1)
|
Net cash used in investing activities |
198.0
|
129.8
|
(157.1)
|
Cash flow from financing activities: |
|
|
|
Borrowings under senior notes payable |
|
0.0
|
|
Repayment of senior notes payable |
0.0
|
|
|
Costs associated with KWE Transaction |
(55.8)
|
|
|
Borrowings under lines of credit |
0.0
|
0.0
|
0.0
|
Repayment of lines of credit |
0.0
|
0.0
|
0.0
|
Borrowings under investment debt |
0.0
|
0.0
|
0.0
|
Repayment of investment debt |
0.0
|
0.0
|
0.0
|
Debt issue costs |
0.0
|
0.0
|
0.0
|
Issuance of common stock |
|
|
215.0
|
Repurchase of common stock |
(67.7)
|
(64.8)
|
(11.4)
|
Cash paid to acquire noncontrolling interest in KWE |
0.0
|
|
|
Dividends paid |
(59.2)
|
(64.8)
|
(51.8)
|
Acquisition of noncontrolling interests |
0.0
|
0.0
|
0.0
|
Contributions from noncontrolling interests |
0.0
|
0.0
|
0.0
|
Distributions to noncontrolling interests |
0.0
|
0.0
|
0.0
|
Net cash (used in) provided by financing activities |
(182.7)
|
(129.6)
|
151.8
|
Effect of currency exchange rate changes on cash and cash equivalents |
0.0
|
0.0
|
0.0
|
Net change in cash and cash equivalents |
0.0
|
0.0
|
0.0
|
Cash and cash equivalents, beginning of year |
0.0
|
0.0
|
0.0
|
Cash and cash equivalents, end of year |
0.0
|
0.0
|
0.0
|
Reportable Legal Entities [Member] | Kennedy-Wilson, Inc. [Member] |
|
|
|
Condensed Financial Statements, Captions [Line Items] |
|
|
|
Net cash provided by operating activities |
(182.8)
|
(207.9)
|
67.4
|
Cash flows from investing activities: |
|
|
|
Additions to loans |
|
(11.6)
|
(41.0)
|
Collections of loans |
0.0
|
6.6
|
0.0
|
Nonrefundable escrow deposits |
|
|
0.0
|
Net proceeds from sale of real estate |
0.0
|
0.0
|
0.0
|
Purchases of and additions to real estate |
0.0
|
0.0
|
0.0
|
Investment in marketable securities |
0.0
|
0.0
|
0.0
|
Proceeds from sale of marketable securities |
0.0
|
|
0.0
|
Investing distributions from unconsolidated investments |
0.0
|
|
0.0
|
Contributions to unconsolidated investments |
0.0
|
(1.0)
|
(2.9)
|
Proceeds from settlement of foreign currency derivative contracts |
(2.8)
|
38.6
|
23.4
|
Purchases of foreign currency derivative contracts |
(0.4)
|
(8.1)
|
(3.6)
|
Additions to development project asset |
0.0
|
|
|
Proceeds from development project asset |
0.0
|
|
|
(Investments in) distributions from consolidated subsidiaries, net |
(126.2)
|
(36.9)
|
128.4
|
Net cash used in investing activities |
(129.4)
|
(12.4)
|
104.3
|
Cash flow from financing activities: |
|
|
|
Borrowings under senior notes payable |
|
250.0
|
|
Repayment of senior notes payable |
(55.0)
|
|
|
Costs associated with KWE Transaction |
0.0
|
|
|
Borrowings under lines of credit |
800.0
|
125.0
|
95.0
|
Repayment of lines of credit |
(500.0)
|
(125.0)
|
(220.0)
|
Borrowings under investment debt |
0.0
|
0.0
|
0.0
|
Repayment of investment debt |
0.0
|
0.0
|
0.0
|
Debt issue costs |
(5.4)
|
(3.9)
|
(4.7)
|
Issuance of common stock |
|
|
0.0
|
Repurchase of common stock |
0.0
|
0.0
|
0.0
|
Cash paid to acquire noncontrolling interest in KWE |
0.0
|
|
|
Dividends paid |
0.0
|
0.0
|
0.0
|
Acquisition of noncontrolling interests |
0.0
|
0.0
|
0.0
|
Contributions from noncontrolling interests |
0.0
|
0.0
|
0.0
|
Distributions to noncontrolling interests |
0.0
|
0.0
|
0.0
|
Net cash (used in) provided by financing activities |
239.6
|
246.1
|
(129.7)
|
Effect of currency exchange rate changes on cash and cash equivalents |
0.0
|
0.0
|
0.0
|
Net change in cash and cash equivalents |
(72.6)
|
25.8
|
42.0
|
Cash and cash equivalents, beginning of year |
106.0
|
80.2
|
38.2
|
Cash and cash equivalents, end of year |
33.4
|
106.0
|
80.2
|
Reportable Legal Entities [Member] | Guarantor Subsidiaries [Member] |
|
|
|
Condensed Financial Statements, Captions [Line Items] |
|
|
|
Net cash provided by operating activities |
(51.4)
|
102.2
|
105.4
|
Cash flows from investing activities: |
|
|
|
Additions to loans |
|
(4.5)
|
0.0
|
Collections of loans |
6.4
|
4.9
|
8.8
|
Nonrefundable escrow deposits |
|
|
0.0
|
Net proceeds from sale of real estate |
130.8
|
109.2
|
0.0
|
Purchases of and additions to real estate |
(422.5)
|
(404.2)
|
(220.3)
|
Investment in marketable securities |
(0.8)
|
(3.2)
|
(5.0)
|
Proceeds from sale of marketable securities |
1.1
|
|
6.2
|
Investing distributions from unconsolidated investments |
95.2
|
54.5
|
83.1
|
Contributions to unconsolidated investments |
(49.8)
|
(104.4)
|
(81.5)
|
Proceeds from settlement of foreign currency derivative contracts |
0.0
|
0.0
|
0.0
|
Purchases of foreign currency derivative contracts |
0.0
|
0.0
|
0.0
|
Additions to development project asset |
0.0
|
|
|
Proceeds from development project asset |
0.0
|
|
|
(Investments in) distributions from consolidated subsidiaries, net |
166.3
|
(95.4)
|
(40.0)
|
Net cash used in investing activities |
(73.3)
|
(443.1)
|
(248.7)
|
Cash flow from financing activities: |
|
|
|
Borrowings under senior notes payable |
|
0.0
|
|
Repayment of senior notes payable |
0.0
|
|
|
Costs associated with KWE Transaction |
0.0
|
|
|
Borrowings under lines of credit |
0.0
|
0.0
|
0.0
|
Repayment of lines of credit |
0.0
|
0.0
|
0.0
|
Borrowings under investment debt |
239.5
|
530.9
|
168.1
|
Repayment of investment debt |
(103.4)
|
(179.5)
|
(7.4)
|
Debt issue costs |
(1.9)
|
(2.1)
|
(1.4)
|
Issuance of common stock |
|
|
0.0
|
Repurchase of common stock |
0.0
|
0.0
|
0.0
|
Cash paid to acquire noncontrolling interest in KWE |
0.0
|
|
|
Dividends paid |
0.0
|
0.0
|
0.0
|
Acquisition of noncontrolling interests |
0.0
|
0.0
|
0.0
|
Contributions from noncontrolling interests |
0.0
|
0.0
|
0.0
|
Distributions to noncontrolling interests |
0.0
|
0.0
|
0.0
|
Net cash (used in) provided by financing activities |
134.2
|
349.3
|
159.3
|
Effect of currency exchange rate changes on cash and cash equivalents |
0.0
|
0.0
|
0.0
|
Net change in cash and cash equivalents |
9.5
|
8.4
|
16.0
|
Cash and cash equivalents, beginning of year |
45.4
|
37.0
|
21.0
|
Cash and cash equivalents, end of year |
54.9
|
45.4
|
37.0
|
Reportable Legal Entities [Member] | Non-Guarantor Subsidiaries [Member] |
|
|
|
Condensed Financial Statements, Captions [Line Items] |
|
|
|
Net cash provided by operating activities |
322.5
|
208.8
|
0.1
|
Cash flows from investing activities: |
|
|
|
Additions to loans |
|
0.0
|
(194.8)
|
Collections of loans |
10.5
|
135.4
|
19.0
|
Nonrefundable escrow deposits |
|
|
(3.8)
|
Net proceeds from sale of real estate |
528.3
|
430.9
|
622.6
|
Purchases of and additions to real estate |
(391.8)
|
(545.4)
|
(1,707.3)
|
Investment in marketable securities |
0.0
|
0.0
|
0.0
|
Proceeds from sale of marketable securities |
0.0
|
|
0.0
|
Investing distributions from unconsolidated investments |
38.2
|
35.1
|
96.9
|
Contributions to unconsolidated investments |
(30.1)
|
(19.5)
|
(99.9)
|
Proceeds from settlement of foreign currency derivative contracts |
0.0
|
0.0
|
18.1
|
Purchases of foreign currency derivative contracts |
0.0
|
0.0
|
(1.6)
|
Additions to development project asset |
(19.4)
|
|
|
Proceeds from development project asset |
36.9
|
|
|
(Investments in) distributions from consolidated subsidiaries, net |
(238.1)
|
2.5
|
68.7
|
Net cash used in investing activities |
(65.5)
|
39.0
|
(1,182.1)
|
Cash flow from financing activities: |
|
|
|
Borrowings under senior notes payable |
|
0.0
|
|
Repayment of senior notes payable |
0.0
|
|
|
Costs associated with KWE Transaction |
0.0
|
|
|
Borrowings under lines of credit |
0.0
|
0.0
|
0.0
|
Repayment of lines of credit |
0.0
|
0.0
|
0.0
|
Borrowings under investment debt |
608.8
|
658.8
|
1,919.8
|
Repayment of investment debt |
(581.3)
|
(428.6)
|
(673.7)
|
Debt issue costs |
(2.2)
|
(4.8)
|
(15.6)
|
Issuance of common stock |
|
|
0.0
|
Repurchase of common stock |
0.0
|
0.0
|
0.0
|
Cash paid to acquire noncontrolling interest in KWE |
(719.8)
|
|
|
Dividends paid |
0.0
|
0.0
|
0.0
|
Acquisition of noncontrolling interests |
(3.3)
|
(196.9)
|
(68.4)
|
Contributions from noncontrolling interests |
47.4
|
42.1
|
14.5
|
Distributions to noncontrolling interests |
(106.0)
|
(116.6)
|
(239.2)
|
Net cash (used in) provided by financing activities |
(756.4)
|
(46.0)
|
937.4
|
Effect of currency exchange rate changes on cash and cash equivalents |
28.1
|
(81.9)
|
(19.5)
|
Net change in cash and cash equivalents |
(471.3)
|
119.9
|
(264.1)
|
Cash and cash equivalents, beginning of year |
734.3
|
614.4
|
878.5
|
Cash and cash equivalents, end of year |
$ 263.0
|
$ 734.3
|
$ 614.4
|