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Schedule III - Real Estate and Accumulated Depreciation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Gross Amounts of Which Carried at Close of Period
Total	$ 1,625.4	$ 1,619.3	$ 1,447.7	$ 1,325.1
Accumulated Depreciation	(154.4)	$ (127.5)	$ (107.6)	$ (133.5)
Aggregate tax basis	$ 703.2
Minimum | Building and improvements
Gross Amounts of Which Carried at Close of Period
Estimated useful life or lease term	10 years
Minimum | Leasehold improvements
Gross Amounts of Which Carried at Close of Period
Estimated useful life or lease term	5 years
Minimum | Other property improvements
Gross Amounts of Which Carried at Close of Period
Estimated useful life or lease term	3 years
Maximum | Building and improvements
Gross Amounts of Which Carried at Close of Period
Estimated useful life or lease term	40 years
Maximum | Leasehold improvements
Gross Amounts of Which Carried at Close of Period
Estimated useful life or lease term	10 years
Maximum | Other property improvements
Gross Amounts of Which Carried at Close of Period
Estimated useful life or lease term	35 years
Commercial Real Estate
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 214.9
Initial Cost
Land	723.2
Buildings and Improvements	609.9
Costs Capitalized Subsequent to Acquisition
Improvements	167.1
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	756.5
Buildings and Improvements	776.8
Total	1,533.3
Accumulated Depreciation	(151.9)
Commercial Real Estate | Kapolei Enterprise Center (HI) | Hawaii | Industrial
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	7.9
Buildings and Improvements	16.8
Costs Capitalized Subsequent to Acquisition
Improvements	0.8
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	7.9
Buildings and Improvements	17.5
Total	25.4
Accumulated Depreciation	(1.0)
Commercial Real Estate | Harbor Industrial (HI) | Hawaii | Industrial
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	0.0
Buildings and Improvements	0.0
Costs Capitalized Subsequent to Acquisition
Improvements	1.3
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	0.0
Buildings and Improvements	1.3
Total	1.3
Accumulated Depreciation	(1.1)
Commercial Real Estate | Honokohau Industrial (HI) | Hawaii | Industrial
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	5.0
Buildings and Improvements	4.8
Costs Capitalized Subsequent to Acquisition
Improvements	0.1
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	5.0
Buildings and Improvements	4.9
Total	9.9
Accumulated Depreciation	(0.5)
Commercial Real Estate | Kailua Industrial/Other (HI) | Hawaii | Industrial
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	10.5
Buildings and Improvements	2.0
Costs Capitalized Subsequent to Acquisition
Improvements	0.6
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	10.5
Buildings and Improvements	2.6
Total	13.1
Accumulated Depreciation	(0.5)
Commercial Real Estate | Kakaako Commerce Center (HI) | Hawaii | Industrial
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	16.9
Buildings and Improvements	20.6
Costs Capitalized Subsequent to Acquisition
Improvements	1.9
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	16.9
Buildings and Improvements	22.5
Total	39.4
Accumulated Depreciation	(3.4)
Commercial Real Estate | Komohana Industrial Park (HI) | Hawaii | Industrial
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	25.2
Buildings and Improvements	10.8
Costs Capitalized Subsequent to Acquisition
Improvements	1.7
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	25.2
Buildings and Improvements	12.4
Total	37.6
Accumulated Depreciation	(3.3)
Commercial Real Estate | Opule Industrial (HI) | Hawaii | Industrial
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	10.9
Buildings and Improvements	27.1
Costs Capitalized Subsequent to Acquisition
Improvements	0.0
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	10.9
Buildings and Improvements	27.1
Total	38.0
Accumulated Depreciation	(1.4)
Commercial Real Estate | P&L Warehouse (HI) | Hawaii | Industrial
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	0.0
Buildings and Improvements	0.0
Costs Capitalized Subsequent to Acquisition
Improvements	1.3
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	0.0
Buildings and Improvements	1.3
Total	1.3
Accumulated Depreciation	(0.8)
Commercial Real Estate | Port Allen (HI) | Hawaii | Industrial
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	0.0
Buildings and Improvements	0.7
Costs Capitalized Subsequent to Acquisition
Improvements	2.4
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	0.0
Buildings and Improvements	3.1
Total	3.1
Accumulated Depreciation	(2.3)
Commercial Real Estate | Waipio Industrial (HI) | Hawaii | Industrial
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	19.6
Buildings and Improvements	7.7
Costs Capitalized Subsequent to Acquisition
Improvements	0.7
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	19.7
Buildings and Improvements	8.4
Total	28.1
Accumulated Depreciation	(2.5)
Commercial Real Estate | Kahului Office Building (HI) | Hawaii | Office
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	1.0
Buildings and Improvements	0.4
Costs Capitalized Subsequent to Acquisition
Improvements	7.7
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	1.0
Buildings and Improvements	8.1
Total	9.1
Accumulated Depreciation	(8.8)
Commercial Real Estate | Kahului Office Center (HI) | Hawaii | Office
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	0.0
Buildings and Improvements	0.0
Costs Capitalized Subsequent to Acquisition
Improvements	5.3
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	0.0
Buildings and Improvements	5.3
Total	5.3
Accumulated Depreciation	(3.9)
Commercial Real Estate | Lono Center (HI) | Hawaii | Office
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	0.0
Buildings and Improvements	1.4
Costs Capitalized Subsequent to Acquisition
Improvements	1.3
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	0.0
Buildings and Improvements	2.7
Total	2.7
Accumulated Depreciation	(1.7)
Commercial Real Estate | Gateway at Mililani Mauka South (HI) | Hawaii | Office
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	7.0
Buildings and Improvements	3.5
Costs Capitalized Subsequent to Acquisition
Improvements	6.8
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	5.5
Buildings and Improvements	10.3
Total	15.8
Accumulated Depreciation	(1.6)
Commercial Real Estate | Aikahi Park Shopping Center (HI) | Hawaii | Retail
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	23.5
Buildings and Improvements	6.7
Costs Capitalized Subsequent to Acquisition
Improvements	5.9
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	23.5
Buildings and Improvements	12.6
Total	36.1
Accumulated Depreciation	(2.5)
Commercial Real Estate | Gateway at Mililani Mauka (HI) | Hawaii | Retail
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	7.3
Buildings and Improvements	4.7
Costs Capitalized Subsequent to Acquisition
Improvements	6.1
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	7.7
Buildings and Improvements	10.8
Total	18.5
Accumulated Depreciation	(2.1)
Commercial Real Estate | Hokulei Street (HI) | Hawaii | Retail
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	16.9
Buildings and Improvements	36.5
Costs Capitalized Subsequent to Acquisition
Improvements	2.7
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	16.9
Buildings and Improvements	39.2
Total	56.1
Accumulated Depreciation	(3.6)
Commercial Real Estate | Kahului Shopping Center (HI) | Hawaii | Retail
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	0.0
Buildings and Improvements	0.0
Costs Capitalized Subsequent to Acquisition
Improvements	2.8
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	0.6
Buildings and Improvements	2.8
Total	3.4
Accumulated Depreciation	(1.7)
Commercial Real Estate | Kailua Retail Other (HI) | Hawaii | Retail
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	14.3
Initial Cost
Land	85.1
Buildings and Improvements	73.8
Costs Capitalized Subsequent to Acquisition
Improvements	16.1
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	86.1
Buildings and Improvements	89.9
Total	176.0
Accumulated Depreciation	(17.8)
Commercial Real Estate | Kaneohe Bay Shopping Ctr. (HI) | Hawaii | Retail
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	0.0
Buildings and Improvements	13.4
Costs Capitalized Subsequent to Acquisition
Improvements	2.4
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	0.9
Buildings and Improvements	15.8
Total	16.7
Accumulated Depreciation	(7.7)
Commercial Real Estate | Kunia Shopping Center (HI) | Hawaii | Retail
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	2.7
Buildings and Improvements	10.6
Costs Capitalized Subsequent to Acquisition
Improvements	2.0
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	3.0
Buildings and Improvements	12.6
Total	15.6
Accumulated Depreciation	(5.6)
Commercial Real Estate | Lanihau Marketplace (HI) | Hawaii | Retail
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	9.4
Buildings and Improvements	13.2
Costs Capitalized Subsequent to Acquisition
Improvements	2.4
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	9.4
Buildings and Improvements	15.6
Total	25.0
Accumulated Depreciation	(4.8)
Commercial Real Estate | Laulani Village (HI) | Hawaii | Retail
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	61.3
Initial Cost
Land	43.4
Buildings and Improvements	64.3
Costs Capitalized Subsequent to Acquisition
Improvements	3.0
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	43.4
Buildings and Improvements	67.4
Total	110.8
Accumulated Depreciation	(6.0)
Commercial Real Estate | Manoa Marketplace (HI) | Hawaii | Retail
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	57.9
Initial Cost
Land	43.3
Buildings and Improvements	35.9
Costs Capitalized Subsequent to Acquisition
Improvements	3.6
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	45.1
Buildings and Improvements	39.5
Total	84.6
Accumulated Depreciation	(5.7)
Commercial Real Estate | Napili Plaza (HI) | Hawaii | Retail
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	9.4
Buildings and Improvements	8.0
Costs Capitalized Subsequent to Acquisition
Improvements	1.1
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	9.4
Buildings and Improvements	9.1
Total	18.5
Accumulated Depreciation	(2.3)
Commercial Real Estate | Pearl Highlands Center (HI) | Hawaii | Retail
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	81.4
Initial Cost
Land	43.4
Buildings and Improvements	96.2
Costs Capitalized Subsequent to Acquisition
Improvements	13.5
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	43.5
Buildings and Improvements	109.7
Total	153.2
Accumulated Depreciation	(23.9)
Commercial Real Estate | Port Allen Marina Ctr. (HI) | Hawaii | Retail
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	0.0
Buildings and Improvements	3.4
Costs Capitalized Subsequent to Acquisition
Improvements	2.0
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	0.0
Buildings and Improvements	5.3
Total	5.3
Accumulated Depreciation	(3.3)
Commercial Real Estate | The Collection (HI) | Hawaii | Retail
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	0.4
Buildings and Improvements	2.2
Costs Capitalized Subsequent to Acquisition
Improvements	0.8
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	0.4
Buildings and Improvements	3.0
Total	3.4
Accumulated Depreciation	(0.2)
Commercial Real Estate | The Shops at Kukui'ula (HI) | Hawaii | Retail
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	8.9
Buildings and Improvements	30.1
Costs Capitalized Subsequent to Acquisition
Improvements	4.1
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	9.2
Buildings and Improvements	34.2
Total	43.4
Accumulated Depreciation	(7.6)
Commercial Real Estate | Waianae Mall (HI) | Hawaii | Retail
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	17.4
Buildings and Improvements	10.1
Costs Capitalized Subsequent to Acquisition
Improvements	5.2
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	17.7
Buildings and Improvements	15.3
Total	33.0
Accumulated Depreciation	(3.7)
Commercial Real Estate | Waipio Shopping Center (HI) | Hawaii | Retail
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	24.0
Buildings and Improvements	7.6
Costs Capitalized Subsequent to Acquisition
Improvements	1.7
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	24.3
Buildings and Improvements	9.3
Total	33.6
Accumulated Depreciation	(2.6)
Commercial Real Estate | Lau Hala Shops (HI) | Hawaii | Retail
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	0.0
Buildings and Improvements	0.0
Costs Capitalized Subsequent to Acquisition
Improvements	23.2
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	14.7
Buildings and Improvements	23.2
Total	37.9
Accumulated Depreciation	(2.2)
Commercial Real Estate | Ho'okele (HI) | Hawaii | Retail
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	0.0
Buildings and Improvements	0.0
Costs Capitalized Subsequent to Acquisition
Improvements	17.5
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	13.5
Buildings and Improvements	17.5
Total	31.0
Accumulated Depreciation	(1.3)
Commercial Real Estate | Puunene Shopping Center (HI) | Hawaii | Retail
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	24.8
Buildings and Improvements	28.6
Costs Capitalized Subsequent to Acquisition
Improvements	7.1
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	24.8
Buildings and Improvements	35.7
Total	60.5
Accumulated Depreciation	(3.9)
Commercial Real Estate | Queens' Marketplace (HI) | Hawaii | Retail
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	20.4
Buildings and Improvements	58.9
Costs Capitalized Subsequent to Acquisition
Improvements	1.5
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	20.4
Buildings and Improvements	60.4
Total	80.8
Accumulated Depreciation	(3.0)
Commercial Real Estate | Waipouli Town Center (HI) | Hawaii | Retail
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	5.9
Buildings and Improvements	9.7
Costs Capitalized Subsequent to Acquisition
Improvements	0.9
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	5.9
Buildings and Improvements	10.6
Total	16.5
Accumulated Depreciation	(0.6)
Commercial Real Estate | Oahu Ground Leases (HI) | Hawaii | Other
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	230.5
Buildings and Improvements	0.1
Costs Capitalized Subsequent to Acquisition
Improvements	(0.1)
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	230.7
Buildings and Improvements	0.0
Total	230.7
Accumulated Depreciation	0.0
Commercial Real Estate | Other miscellaneous investments | Other
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	2.5
Buildings and Improvements	0.1
Costs Capitalized Subsequent to Acquisition
Improvements	9.7
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	2.8
Buildings and Improvements	9.8
Total	12.6
Accumulated Depreciation	(7.0)
Land Operations | Hawaii
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	37.9
Buildings and Improvements	0.3
Costs Capitalized Subsequent to Acquisition
Improvements	57.1
Carrying Costs	(0.5)
Gross Amounts of Which Carried at Close of Period
Land	35.2
Buildings and Improvements	56.9
Total	92.1
Accumulated Depreciation	(2.5)
Land Operations | Other miscellaneous investments | Hawaii
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	2.0
Buildings and Improvements	0.0
Costs Capitalized Subsequent to Acquisition
Improvements	0.9
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	1.9
Buildings and Improvements	0.9
Total	2.8
Accumulated Depreciation	(0.5)
Land Operations | Agricultural Land | Hawaii
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	11.3
Buildings and Improvements	0.0
Costs Capitalized Subsequent to Acquisition
Improvements	0.9
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	11.3
Buildings and Improvements	0.9
Total	12.2
Accumulated Depreciation	(0.5)
Land Operations | Kahala Portfolio | Hawaii
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	0.0
Buildings and Improvements	0.0
Costs Capitalized Subsequent to Acquisition
Improvements	0.0
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	0.0
Buildings and Improvements	0.0
Total	0.0
Accumulated Depreciation	0.0
Land Operations | Kamalani | Hawaii
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	0.0
Buildings and Improvements	0.0
Costs Capitalized Subsequent to Acquisition
Improvements	5.1
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	0.0
Buildings and Improvements	5.1
Total	5.1
Accumulated Depreciation	0.0
Land Operations | Kauai Landholdings | Hawaii
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	0.0
Buildings and Improvements	0.1
Costs Capitalized Subsequent to Acquisition
Improvements	2.5
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	0.0
Buildings and Improvements	2.6
Total	2.6
Accumulated Depreciation	(0.8)
Land Operations | Maui Business Park II | Hawaii
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	0.0
Buildings and Improvements	0.0
Costs Capitalized Subsequent to Acquisition
Improvements	33.0
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	0.0
Buildings and Improvements	33.0
Total	33.0
Accumulated Depreciation	0.0
Land Operations | Maui Landholdings | Hawaii
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	0.1
Buildings and Improvements	0.2
Costs Capitalized Subsequent to Acquisition
Improvements	6.2
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	0.1
Buildings and Improvements	6.4
Total	6.5
Accumulated Depreciation	(0.7)
Land Operations | Wailea B-1 | Hawaii
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	4.6
Buildings and Improvements	0.0
Costs Capitalized Subsequent to Acquisition
Improvements	0.0
Carrying Costs	0.0
Gross Amounts of Which Carried at Close of Period
Land	4.6
Buildings and Improvements	0.0
Total	4.6
Accumulated Depreciation	0.0
Land Operations | Wailea, other | Hawaii
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0.0
Initial Cost
Land	19.9
Buildings and Improvements	0.0
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