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Basis of Presentation and Principles of Consolidation (Details) (USD $) In Millions, unless otherwise specified | Dec. 31, 2013 entity
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Consolidated VIEs |
Total revenues and total expenses related to consolidated VIEs |
Number of variable interest entities (in investments) | 5
Variable interest entity, consolidated, carrying amount, assets | $ 216.1
Variable interest entity, consolidated, carrying amount, liabilities | 33.9
Variable interest entity unfunded commitment | 38.8
Unconsolidated VIEs |
Total revenues and total expenses related to consolidated VIEs |
Number of variable interest entities (in investments) | 28
Variable interest entity unfunded commitment | 29.6
Carrying value of the investments | $ 179.2

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- Definition Represents the number of variable interest entities of the entity. + References No definition available. + Details
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Balance Type: | na
Period Type: | instant

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- Definition The amount of unfunded commitments that the entity has to the Variable Interest Entity. + References No definition available. + Details
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Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition The carrying amount of the consolidated Variable Interest Entity's assets included in the reporting entity's statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=28200181&loc=d3e5710-111685 + Details
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- Definition The carrying amount of the consolidated Variable Interest Entity's liabilities included in the reporting entity's statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=28200181&loc=d3e5710-111685 + Details
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- Definition Net carrying amount of the assets and liabilities in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), when the reporting entity is not the VIE's primary beneficiary. + References No definition available. + Details
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