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Acquisitions and Intangible Assets, Net (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($) property	Dec. 31, 2018 USD ($) property	Dec. 31, 2020 USD ($)
Real Estate [Line Items]
Property and improvements	$ 1,412.7		$ 1,395.3
Total assets	2,084.3	$ 2,225.2	2,036.0
Long-term Debt	704.6		687.1
Total liabilities	949.3		$ 933.4
Hawaii | 2019 Acquisitions
Real Estate [Line Items]
Purchase consideration	218.4
Land	106.9
Property and improvements	91.3
In-place leases	23.2
Favorable leases	4.3
Total assets	225.7
Unfavorable leases	7.3
Total liabilities	7.3
Net assets acquired	$ 218.4
Hawaii | 2019 Acquisitions | In-place leases
Real Estate [Line Items]
Weighted average amortization periods	8 years 2 months 12 days
Hawaii | 2019 Acquisitions | Favorable leases
Real Estate [Line Items]
Weighted average amortization periods	4 years 8 months 12 days
Hawaii | 2019 Acquisitions | Favorable leases
Real Estate [Line Items]
Unfavorable lease, weighted average useful life (in years)	18 years 7 months 6 days
Hawaii | 2018 Acquisitions
Real Estate [Line Items]
Debt assumed		62.0
Capitalized acquisition costs		2.7
Land		92.8
Property and improvements		173.9
In-place leases		32.0
Favorable leases		6.7
Total assets		305.4
Unfavorable leases		2.7
Long-term Debt		61.0
Total liabilities		63.7
Net assets acquired		241.7
Fair value adjustment		$ 1.0
Hawaii | 2018 Acquisitions | In-place leases
Real Estate [Line Items]
Weighted average amortization periods		12 years 4 months 24 days
Hawaii | 2018 Acquisitions | Favorable leases
Real Estate [Line Items]
Weighted average amortization periods		11 years 8 months 12 days
Hawaii | 2018 Acquisitions | Favorable leases
Real Estate [Line Items]
Unfavorable lease, weighted average useful life (in years)		11 years 6 months
Hawaii | Commercial property | 2019 Acquisitions
Real Estate [Line Items]
Number of commercial properties acquired | property	5
Hawaii | Commercial property | 2018 Acquisitions
Real Estate [Line Items]
Number of commercial properties acquired | property		5
Purchase consideration		$ 303.7
Number of properties sold used to fund the acquisitions | property		7

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