The net gain (loss) resulting from sales and other disposals of real estate owned for investment purposes.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.14(d))
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

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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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- Definition

A tax based on the assessed value of real estate by the local government. The tax is usually based on the value of property (including the land).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 720
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6419918&loc=d3e35301-107843

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The income (loss) related to the termination of a contract between two parties. The termination may be due to many causes including early termination of a lease by a lessee, a breach of contract by one party, or failure to perform.

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The number of properties sold during the period.

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Selected Quarterly Financial Data (Unaudited) - Narratives (Details) $ in Millions	3 Months Ended			12 Months Ended
	Sep. 30, 2016 USD ($) property	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Interim Period, Costs Not Allocable
Lease termination income		$ 32.2
Gain on sale of real estate, net of tax	$ 49.1
Properties sold \| property	4
Real estate tax expense, adjustment				$ 56.0	$ 57.7	$ 59.8
Germany \| Adjustments
Interim Period, Costs Not Allocable
Real estate tax expense, adjustment			$ (25.0)
Continuing Operations
Interim Period, Costs Not Allocable
Lease termination income			$ 15.0