The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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The charge against earnings in the period to reduce the carrying amount of real property to fair value.

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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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The valuation allowance loss on real estate owned or any impairment losses taken against real estate investments held for use or resale.

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Operating Real Estate - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Real Estate [Line Items]
Depreciation	$ 15.5	$ 15.7	$ 47.5	$ 46.8
Impairment loss			91.4	$ 10.1
Building and Building Improvements
Real Estate [Line Items]
Accumulated impairment	$ 148.7		$ 148.7		$ 58.0