XML 66 R56.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Summary of Significant Accounting Policies (Net Lease Sale and Discontinued Operations) (Details) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 28, 2022 USD ($) property lease | Jun. 30, 2021 lease | Dec. 31, 2021 USD ($) item
Discontinued operations |  |  |
Number of joint ventures with properties included in Net Lease Sale | item |  |  | 2
Equity interest in joint ventures |  |  | 51.90%
Number of ground leases entered into | lease |  | 2 |
Net Lease Business Segment | Discontinued Operations - Held for Sale |  |  |
Discontinued operations |  |  |
Mortgage indebtedness on lease assets |  |  | $ 720.0
Subsequent Event |  |  |
Discontinued operations |  |  |
Number of properties sold | property | 2 |  |
Subsequent Event | Third Party Buyer - Net Lease Properties |  |  |
Discontinued operations |  |  |
Number of properties sold | property | 3 |  |
Consideration for sale of properties | $ 122.0 |  |
Number of ground leases entered into | lease | 3 |  |
Subsequent Event | Discontinued Operations - Held for Sale | Third Party Buyer - Net Lease Properties |  |  |
Discontinued operations |  |  |
Amount of net cash consideration expected to be available after settlement of obligations | $ 1,100.0 |  |
Subsequent Event | Net Lease Business Segment | Discontinued Operations - Held for Sale |  |  |
Discontinued operations |  |  |
Gross consideration to be received under definitive sale agreement | $ 3,070.0 |  |
Aggregate square footage of net lease assets | 18.3 |  |

X
- Definition Amount of mortgage indebtedness on lease properties attributable to disposal group held for sale or disposed of. + References No definition available. + Details
Name: | star_DisposalGroupIncludingDiscontinuedOperationMortgageObligations
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of net cash consideration available after settlement of obligations attributable to sale of disposal group held for sale. + References No definition available. + Details
Name: | star_DisposalGroupIncludingDiscontinuedOperationNetCashConsiderationAvailableAfterSettlementOfObligations
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The aggregate square footage of held for sale net lease assets included in Net Lease Sale. + References No definition available. + Details
Name: | star_NetLeaseSaleAggregateSquareFeet
Namespace Prefix: | star_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of ground leases entered into during the period. + References No definition available. + Details
Name: | star_NumberOfGroundLeasesEnteredInto
Namespace Prefix: | star_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of joint ventures with properties included in Net Lease Sale. + References No definition available. + Details
Name: | star_NumberOfJointVenturesWithPropertiesIncludedInNetLeaseSale
Namespace Prefix: | star_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Real Estate Properties Sold + References No definition available. + Details
Name: | star_NumberOfRealEstatePropertiesSold
Namespace Prefix: | star_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation. + References No definition available. + Details
Name: | us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
Name: | us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition 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. + References No definition available. + Details
Name: | us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3179-108585 + Details
Name: | us-gaap_ProceedsFromSaleOfProductiveAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=star_NetLeaseBusinessSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DisposalGroupClassificationAxis=us-gaap_DiscontinuedOperationsHeldforsaleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=star_ThirdPartyBuyerNetLeasePropertiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |