Business Acquisition Purchase Price Allocation Square Footage.

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Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Real Property

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Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Fair Value Adjustments and Other

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Notes Assumed, Unamortized Premium

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Number of Properties Acquired

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Real estate investment net disposed of during the Period.

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Area of land held.

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Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Real Estate Investments - Acquisitions (Details) $ in Millions								9 Months Ended
	Aug. 24, 2018 USD ($) ft²	Jun. 29, 2018 USD ($) a ft²	Jun. 27, 2018 USD ($)	May 21, 2018 USD ($) ft²	May 18, 2018 USD ($) ft² property	May 03, 2018 USD ($) ft²	Apr. 26, 2018 USD ($)	Sep. 30, 2018 USD ($) ft²
Business Acquisition [Line Items]
Gain on disposition of property			$ 5.4				$ 22.3
Real Estate Acquisition
Business Acquisition [Line Items]
Purchase price								$ 74.5
Mortgage Note Payable Assumed								(8.0)
Cash consideration								66.2
Real Estate								75.3
Other								$ (1.0)
Square footage \| ft²								387,848
Fair value adjustments								$ 0.1
WASHINGTON \| Real Estate Acquisition
Business Acquisition [Line Items]
Date Acquired		Jun. 29, 2018				May 04, 2018
Purchase price		$ 26.2				$ 7.8
Mortgage Note Payable Assumed		0.0				0.0
Cash consideration		26.2				7.8
Real Estate		26.7				7.8
Other		$ (0.5)				$ 0.0
Square footage \| ft²		86,942				13,314
COLORADO \| Real Estate Acquisition
Business Acquisition [Line Items]
Date Acquired	Aug. 24, 2018				May 18, 2018
Purchase price	$ 4.1				$ 25.0
Mortgage Note Payable Assumed	0.0				(8.0)
Cash consideration	4.2				16.6
Real Estate	4.2				25.1
Other	$ 0.0				$ (0.4)
Square footage \| ft²	17,084				187,861
Number of properties acquired \| property					2
OKLAHOMA \| Real Estate Acquisition
Business Acquisition [Line Items]
Date Acquired				May 21, 2018
Purchase price				$ 11.4
Mortgage Note Payable Assumed				0.0
Cash consideration				11.4
Real Estate				11.5
Other				$ (0.1)
Square footage \| ft²				82,647
Land Held for Development \| Real Estate Acquisition
Business Acquisition [Line Items]
Area of land acquired \| a		20.5
Real Estate Dispositions
Business Acquisition [Line Items]
Net Real Estate Investment								34.8
Gain on disposition of property								$ 29.0
Real Estate Dispositions \| Garage
Business Acquisition [Line Items]
Net Real Estate Investment		$ 3.9
Gain on disposition of property		$ 1.9