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Debt - Long-term Debt (Details) |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Mar. 07, 2013 USD ($) | Sep. 30, 2015 | Mar. 31, 2015 | Nov. 30, 2014 | Sep. 30, 2014 | May. 31, 2014 extension_option | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Sep. 30, 2013 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Asset-backed securitizations |  |  |  |  |  |  | $ 2,530,210,000 | $ 1,519,390,000 |
Secured note payable |  |  |  |  |  |  | 50,752,000 | 51,644,000 |
Credit facility |  |  |  |  |  |  | 0 | 207,000,000 |
Total debt |  |  |  |  |  |  | $ 2,580,962,000 | $ 1,778,034,000 |
2014-SFR 1 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  | 1.97% | 1.79% |
Asset-backed securitizations |  |  |  |  |  |  |  | $ 478,565,000 |
Debt instrument term |  |  |  |  |  | 2 years |  |  |
Number of debt instrument extension options | extension_option |  |  |  |  |  | 3 |  |  |
Period of extension options |  |  |  |  |  | 12 months |  |  |
2014-SFR 1 | LIBOR |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  |  | 0.25% |  |  |
2014-SFR 2 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  | 4.42% | 4.42% |
Asset-backed securitizations |  |  |  |  |  |  |  | $ 512,435,000 |
2014-SFR 3 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  | 4.40% | 4.40% |
Asset-backed securitizations |  |  |  |  |  |  |  | $ 528,390,000 |
2015-SFR 1 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  | 4.14% | 4.14% |
Asset-backed securitizations |  |  |  |  |  |  |  | $ 0 |
2015-SFR 2 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  | 4.36% | 4.36% |
Asset-backed securitizations |  |  |  |  |  |  |  | $ 0 |
Single family homes | 2014-SFR 1 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Asset-backed securitizations |  |  |  |  |  |  | $ 473,755,000 |  |
Number of debt instrument extension options | extension_option |  |  |  |  |  | 3 |  |  |
Period of extension options |  |  |  |  |  |  | 12 months |  |
Single family homes | 2014-SFR 2 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Asset-backed securitizations |  |  |  |  |  |  | $ 507,305,000 |  |
Debt instrument term |  |  |  |  | 10 years |  |  |  |
Single family homes | 2014-SFR 3 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Asset-backed securitizations |  |  |  |  |  |  | $ 523,109,000 |  |
Debt instrument term |  |  |  | 10 years |  |  |  |  |
Senior Notes | Notes Payable |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  | 4.06% | 4.06% |
Secured note payable |  |  |  |  |  |  | $ 50,752,000 | $ 51,644,000 |
Senior Secured Revolving Credit Facility |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  | 3.18% | 3.00% |
Credit facility |  |  |  |  |  |  | $ 0 | $ 207,000,000 |
Credit facility maximum borrowing capacity | $ 500,000,000 |  |  |  |  |  | $ 800,000,000.0 |  | $ 800,000,000
Weighted Average | 2014-SFR 1 | LIBOR |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  |  | 1.54% |  |  |
Until March 2017 | Senior Secured Revolving Credit Facility |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Basis spread on variable rate | 2.75% |  |  |  |  |  | 2.75% |  |
March 2017 and Thereafter | Senior Secured Revolving Credit Facility |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Basis spread on variable rate | 3.125% |  |  |  |  |  | 3.125% |  |
Special Purpose Entity | 2015-SFR 1 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Asset-backed securitizations |  |  |  |  |  |  | $ 549,121,000 |  |
Debt instrument term |  |  | 30 years |  |  |  |  |  |
Special Purpose Entity | 2015-SFR 2 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Asset-backed securitizations |  |  |  |  |  |  | $ 476,920,000 |  |
Debt instrument term |  | 30 years |  |  |  |  |  |  |

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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: 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 2: 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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- 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 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 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
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- Definition Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer. + References Reference 1: 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 2: 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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13, 16 -Article 9 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 + Details
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