Summary of Significant Accounting Policies (Narrative) (Details) - Accounting Standards Update 2015-03 - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Deferred Costs
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred financing costs, net	$ 17.7	$ 20.1
Mortgage Notes Payable
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred financing costs, net	$ (17.7)	$ (20.1)

For an unclassified balance sheet, the carrying amount (net of accumulated amortization) as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28555-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant