XML 88 R63.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Debt Obligations, net (Schedule of Debt) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2015 | Dec. 31, 2014
Debt Instrument [Line Items] |  |  |  |
Total debt obligations | $ 4,271,867 us-gaap_DebtInstrumentCarryingAmount |  | $ 4,034,349 us-gaap_DebtInstrumentCarryingAmount |
Debt discounts, net | (10,339)us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet |  | (11,665)us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet |
Total debt obligations, net | 4,261,528 us-gaap_LongTermDebt |  | 4,022,684 us-gaap_LongTermDebt |
2012 Tranche A-2 Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt obligations | 348,185 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_SecuredCreditFacilitiesTrancheA2FacilityDueMarch2017Member | [1] | 358,504 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_SecuredCreditFacilitiesTrancheA2FacilityDueMarch2017Member | [1]
Stated Interest Rates | 7.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = star_SecuredCreditFacilitiesTrancheA2FacilityDueMarch2017Member |  |  |
Variable interest rate, spread | 5.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_LongtermDebtTypeAxis = star_SecuredCreditFacilitiesTrancheA2FacilityDueMarch2017Member | [1] |  |
Variable interest rate, basis | LIBOR | [1] |  |
2015 Revolving Credit Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt obligations | 250,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_SecuredCreditFacilityRevolverDueMarch2018Member | [2] | 0 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_SecuredCreditFacilityRevolverDueMarch2018Member | [2]
Term loans collateralized by net lease assets |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt obligations | 246,792 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_SecuredTermLoansCollateralizedByLoansNetLeaseAssetsDueThrough2026Member | [3] | 248,955 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_SecuredTermLoansCollateralizedByLoansNetLeaseAssetsDueThrough2026Member | [3]
Weighted average interest rate | 5.30%us-gaap_DebtWeightedAverageInterestRate / us-gaap_LongtermDebtTypeAxis = star_SecuredTermLoansCollateralizedByLoansNetLeaseAssetsDueThrough2026Member |  |  |
Stated interest rate, minimum | 4.851%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum / us-gaap_LongtermDebtTypeAxis = star_SecuredTermLoansCollateralizedByLoansNetLeaseAssetsDueThrough2026Member | [3] |  |
Stated interest rate, maximum | 7.26%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum / us-gaap_LongtermDebtTypeAxis = star_SecuredTermLoansCollateralizedByLoansNetLeaseAssetsDueThrough2026Member | [3] |  |
Total secured credit facilities and term loans |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt obligations | 844,977 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_SecuredCreditFacilitiesMember |  | 607,459 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_SecuredCreditFacilitiesMember |
6.05% senior notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt obligations | 105,765 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotes6Point05PercentSeniorNotesDueApril2015Member |  | 105,765 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotes6Point05PercentSeniorNotesDueApril2015Member |
Stated Interest Rates | 6.05%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotes6Point05PercentSeniorNotesDueApril2015Member |  |  |
5.875% senior notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt obligations | 261,403 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotes5Point875PercentSeniorNotesDueMarch2016Member |  | 261,403 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotes5Point875PercentSeniorNotesDueMarch2016Member |
Stated Interest Rates | 5.875%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotes5Point875PercentSeniorNotesDueMarch2016Member |  |  |
3.875% senior notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt obligations | 265,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotes3point875PercentSeniorNotesDueJuly2016Member |  | 265,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotes3point875PercentSeniorNotesDueJuly2016Member |
Stated Interest Rates | 3.875%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotes3point875PercentSeniorNotesDueJuly2016Member |  |  |
3.0% senior convertible notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt obligations | 200,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_SeniorConvertibleThreePointZeroPercentNotesDueNovember2016Member | [4] | 200,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_SeniorConvertibleThreePointZeroPercentNotesDueNovember2016Member | [4]
Stated Interest Rates | 3.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = star_SeniorConvertibleThreePointZeroPercentNotesDueNovember2016Member | [4] |  |
Convertible debt conversion ratio | 0.085 us-gaap_DebtInstrumentConvertibleConversionRatio1 / us-gaap_LongtermDebtTypeAxis = star_SeniorConvertibleThreePointZeroPercentNotesDueNovember2016Member |  |  |
Convertible debt conversion price | $ 11.77 us-gaap_DebtInstrumentConvertibleConversionPrice1 / us-gaap_LongtermDebtTypeAxis = star_SeniorConvertibleThreePointZeroPercentNotesDueNovember2016Member |  |  |
1.50% senior convertible notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt obligations | 200,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_SeniorConvertibleOnePoint50PercentNotesDueNovember2016Member | [5] | 200,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_SeniorConvertibleOnePoint50PercentNotesDueNovember2016Member | [5]
Stated Interest Rates | 1.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = star_SeniorConvertibleOnePoint50PercentNotesDueNovember2016Member | [5] |  |
Convertible debt conversion ratio | 0.0578 us-gaap_DebtInstrumentConvertibleConversionRatio1 / us-gaap_LongtermDebtTypeAxis = star_SeniorConvertibleOnePoint50PercentNotesDueNovember2016Member |  |  |
Convertible debt conversion price | $ 17.29 us-gaap_DebtInstrumentConvertibleConversionPrice1 / us-gaap_LongtermDebtTypeAxis = star_SeniorConvertibleOnePoint50PercentNotesDueNovember2016Member |  |  |
5.85% senior notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt obligations | 99,722 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotes5Point85PercentSeniorNotesDueMarch2017Member |  | 99,722 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotes5Point85PercentSeniorNotesDueMarch2017Member |
Stated Interest Rates | 5.85%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotes5Point85PercentSeniorNotesDueMarch2017Member |  |  |
9.0% senior notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt obligations | 275,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotesNinePercentSeniorNotesDueJune2017Member |  | 275,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotesNinePercentSeniorNotesDueJune2017Member |
Stated Interest Rates | 9.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotesNinePercentSeniorNotesDueJune2017Member |  |  |
4.00% senior notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt obligations | 550,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotesFourPercentSeniorNotesDueNovember2017Member |  | 550,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotesFourPercentSeniorNotesDueNovember2017Member |
Stated Interest Rates | 4.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotesFourPercentSeniorNotesDueNovember2017Member |  |  |
7.125% senior notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt obligations | 300,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotesSevenPointOneTwoFivePercentSeniorNotesDueFebruary2018Member |  | 300,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotesSevenPointOneTwoFivePercentSeniorNotesDueFebruary2018Member |
Stated Interest Rates | 7.125%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotesSevenPointOneTwoFivePercentSeniorNotesDueFebruary2018Member |  |  |
4.875% senior notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt obligations | 300,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotes4point875PercentSeniorNotesDueJuly2018Member |  | 300,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotes4point875PercentSeniorNotesDueJuly2018Member |
Stated Interest Rates | 4.875%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotes4point875PercentSeniorNotesDueJuly2018Member |  |  |
5.00% senior notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt obligations | 770,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotesFivePercentSeniorNotesDueJuly2019Member |  | 770,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotesFivePercentSeniorNotesDueJuly2019Member |
Stated Interest Rates | 5.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = star_UnsecuredNotesFivePercentSeniorNotesDueJuly2019Member |  |  |
Unsecured Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt obligations | 3,326,890 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_UnsecuredSeniorNotesMember |  | 3,326,890 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_UnsecuredSeniorNotesMember |
Other debt obligations |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total debt obligations | $ 100,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_OtherDebtSecuritiesDueOctober2035Member |  | $ 100,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = star_OtherDebtSecuritiesDueOctober2035Member |
Variable interest rate, spread | 1.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_LongtermDebtTypeAxis = star_OtherDebtSecuritiesDueOctober2035Member |  |  |
Variable interest rate, basis | LIBOR |  |  |
Minimum | 2012 Tranche A-2 Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Variable interest rate, spread | 1.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_LongtermDebtTypeAxis = star_SecuredCreditFacilitiesTrancheA2FacilityDueMarch2017Member / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |
Property One | London Interbank Offered Rate (LIBOR) | Term loans collateralized by net lease assets |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Variable interest rate, spread | 2.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_LongtermDebtTypeAxis = star_SecuredTermLoansCollateralizedByLoansNetLeaseAssetsDueThrough2026Member / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = star_PropertyOneMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  |  |
Base Rate [Member] | London Interbank Offered Rate (LIBOR) | 2015 Revolving Credit Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Variable interest rate, spread | 1.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / star_InterestRateTypeAxis = us-gaap_BaseRateMember / us-gaap_LongtermDebtTypeAxis = star_SecuredCreditFacilityRevolverDueMarch2018Member / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  |  |
Base Rate [Member] | Federal Funds Effective Swap Rate [Member] | 2015 Revolving Credit Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Variable interest rate, spread | 0.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / star_InterestRateTypeAxis = us-gaap_BaseRateMember / us-gaap_LongtermDebtTypeAxis = star_SecuredCreditFacilityRevolverDueMarch2018Member / us-gaap_VariableRateAxis = us-gaap_FederalFundsEffectiveSwapRateMember |  |  |
Base Rate [Member] | Minimum | 2015 Revolving Credit Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, margin | 1.25%star_DebtInstrumentMargin / star_InterestRateTypeAxis = us-gaap_BaseRateMember / us-gaap_LongtermDebtTypeAxis = star_SecuredCreditFacilityRevolverDueMarch2018Member / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |
Base Rate [Member] | Maximum [Member] | 2015 Revolving Credit Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, margin | 1.75%star_DebtInstrumentMargin / star_InterestRateTypeAxis = us-gaap_BaseRateMember / us-gaap_LongtermDebtTypeAxis = star_SecuredCreditFacilityRevolverDueMarch2018Member / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |
London Interbank Offered Rate (LIBOR) | Minimum | 2015 Revolving Credit Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, margin | 2.25%star_DebtInstrumentMargin / star_InterestRateTypeAxis = us-gaap_LondonInterbankOfferedRateLIBORMember / us-gaap_LongtermDebtTypeAxis = star_SecuredCreditFacilityRevolverDueMarch2018Member / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |
London Interbank Offered Rate (LIBOR) | Maximum [Member] | 2015 Revolving Credit Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, margin | 2.75%star_DebtInstrumentMargin / star_InterestRateTypeAxis = us-gaap_LondonInterbankOfferedRateLIBORMember / us-gaap_LongtermDebtTypeAxis = star_SecuredCreditFacilityRevolverDueMarch2018Member / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |
[1] | The loan has a LIBOR floor of 1.25%. As of March 31, 2015, inclusive of the floor, the 2012 Tranche A-2 Facility loan incurred interest at a rate of 7.00%.
[2] | The loan bears interest at the Company's election of either (i) a base rate, which is the greater of (a) prime, (b) federal funds plus 0.5% or (c) LIBOR plus 1.00% and subject to a margin ranging from 1.25% to 1.75%, or (ii) LIBOR subject to a margin ranging from 2.25% to 2.75%. At maturity, the Company may convert outstanding borrowings to a one year term loan which matures in quarterly installments through March 2019.
[3] | As of March 31, 2015 and December 31, 2014, includes a loan with a floating rate of LIBOR plus 2.00%. As of March 31, 2015, the weighted average interest rate of these loans is 5.3%.
[4] | The Company's 3.0% senior convertible fixed rate notes due November 2016 ("3.0% Convertible Notes") are convertible at the option of the holders, into 85.0 shares per $1,000 principal amount of 3.0% Convertible Notes, at $11.77 per share at any time prior to the close of business on November 14, 2016.
[5] | The Company's 1.50% senior convertible fixed rate notes due November 2016 ("1.50% Convertible Notes") are convertible at the option of the holders, into 57.8 shares per $1,000 principal amount of 1.50% Convertible Notes, at $17.29 per share at any time prior to the close of business on November 14, 2016.

X
- Definition Debt Instrument, Margin + References No definition available. + Details
Name: | star_DebtInstrumentMargin
Namespace Prefix: | star_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
Name: | us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The price per share of the conversion feature embedded in the debt instrument. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870 + Details
Name: | us-gaap_DebtInstrumentConvertibleConversionPrice1
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(5)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Conversion Rate -URI http://asc.fasb.org/extlink&oid=6509012 + Details
Name: | us-gaap_DebtInstrumentConvertibleConversionRatio1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentDescriptionOfVariableRateBasis
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Maximum contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of debt discount (net of debt premium) that was originally recognized at the issuance of the instrument that has yet to be amortized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: 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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28567-108399 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 + Details
Name: | us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Weighted average interest rate of debt outstanding. + References No definition available. + Details
Name: | us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 + Details
Name: | us-gaap_LongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | star_InterestRateTypeAxis=us-gaap_BaseRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | star_InterestRateTypeAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=star_OtherDebtSecuritiesDueOctober2035Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=star_SecuredCreditFacilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=star_SecuredCreditFacilitiesTrancheA2FacilityDueMarch2017Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=star_SecuredCreditFacilityRevolverDueMarch2018Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=star_SecuredTermLoansCollateralizedByLoansNetLeaseAssetsDueThrough2026Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=star_SeniorConvertibleOnePoint50PercentNotesDueNovember2016Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=star_SeniorConvertibleThreePointZeroPercentNotesDueNovember2016Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=star_UnsecuredNotes3point875PercentSeniorNotesDueJuly2016Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=star_UnsecuredNotes4point875PercentSeniorNotesDueJuly2018Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=star_UnsecuredNotes5Point85PercentSeniorNotesDueMarch2017Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=star_UnsecuredNotes5Point875PercentSeniorNotesDueMarch2016Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=star_UnsecuredNotes6Point05PercentSeniorNotesDueApril2015Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=star_UnsecuredNotesFivePercentSeniorNotesDueJuly2019Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=star_UnsecuredNotesFourPercentSeniorNotesDueNovember2017Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=star_UnsecuredNotesNinePercentSeniorNotesDueJune2017Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=star_UnsecuredNotesSevenPointOneTwoFivePercentSeniorNotesDueFebruary2018Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=star_UnsecuredSeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=star_PropertyOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |