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Debt - Schedule of Debt (Details) - USD ($) | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Feb. 28, 2018 | Dec. 31, 2017
Debt Instrument [Line Items] |  |  |  |  |  |
Debt, gross | $ 2,712,688,000 |  | $ 2,712,688,000 |  |  | $ 2,517,216,000
Unamortized discounts on unsecured and exchangeable senior notes | (2,751,000) |  | (2,751,000) |  |  | (895,000)
Equity component of exchangeable senior notes | (358,000) |  | (358,000) |  |  | (2,408,000)
Deferred financing costs, net | (37,876,000) |  | (37,876,000) |  |  | (38,026,000)
Total debt per balance sheet | 2,671,703,000 |  | 2,671,703,000 |  |  | 2,475,887,000
Amortization of financing costs |  |  | 5,838,000 | $ 6,285,000 |  |
Revolving Credit Facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Deferred financing costs, net | (7,400,000) |  | (7,400,000) |  |  | (8,800,000)
Asset-backed Securitizations, Unsecured Senior Notes and Term Loan Facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Amortization of financing costs | 1,500,000 | $ 1,400,000 | 4,400,000 | $ 5,000,000 |  |
Secured Debt |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt, gross | $ 1,997,688,000 |  | $ 1,997,688,000 |  |  | 2,013,357,000
Secured Debt | 2014-SFR 2 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest Rate | 4.42% |  | 4.42% |  |  |
Debt, gross | $ 492,478,000 |  | $ 492,478,000 |  |  | 496,326,000
Secured Debt | 2014-SFR 3 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest Rate | 4.40% |  | 4.40% |  |  |
Debt, gross | $ 508,080,000 |  | $ 508,080,000 |  |  | 512,041,000
Secured Debt | 2015-SFR 1 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest Rate | 4.14% |  | 4.14% |  |  |
Debt, gross | $ 533,578,000 |  | $ 533,578,000 |  |  | 537,723,000
Secured Debt | 2015-SFR 2 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest Rate | 4.36% |  | 4.36% |  |  |
Debt, gross | $ 463,552,000 |  | $ 463,552,000 |  |  | 467,267,000
Secured Debt | Secured Note Payable |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt, gross | $ 0 |  | $ 0 |  |  | 48,859,000
Senior Notes | 4.25% Senior Notes Due 2028 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest Rate | 4.25% |  | 4.25% |  | 4.25% |
Effective interest rate | 4.08% |  | 4.08% |  |  |
Debt, gross | $ 500,000,000 |  | $ 500,000,000 |  |  | 0
Deferred financing costs, net |  |  |  |  | $ (1,900,000) |
Convertible Debt | 3.25% Exchangeable Senior Notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest Rate | 3.25% |  | 3.25% |  |  |
Debt, gross | $ 115,000,000 |  | $ 115,000,000 |  |  | 115,000,000
Line of Credit | Revolving Credit Facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Effective interest rate | 3.46% |  | 3.46% |  |  |
Debt, gross | $ 0 |  | $ 0 |  |  | 140,000,000
Maximum borrowing capacity | $ 800,000,000 |  | $ 800,000,000 |  |  |
Line of Credit | Revolving Credit Facility | LIBOR | Minimum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 0.825% |  |  |
Line of Credit | Revolving Credit Facility | LIBOR | Maximum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 1.55% |  |  |
Line of Credit | Revolving Credit Facility | Base Rate | Minimum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 0.00% |  |  |
Line of Credit | Revolving Credit Facility | Base Rate | Maximum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 0.55% |  |  |
Line of Credit | Term Loan facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Effective interest rate | 3.61% |  | 3.61% |  |  |
Debt, gross | $ 100,000,000 |  | $ 100,000,000 |  |  | 200,000,000
Deferred financing costs, net | $ (800,000) |  | $ (800,000) |  |  | $ (2,000,000)
Line of Credit | Term Loan facility | LIBOR | Minimum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 0.90% |  |  |
Line of Credit | Term Loan facility | LIBOR | Maximum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 1.75% |  |  |
Line of Credit | Term Loan facility | Base Rate | Minimum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 0.00% |  |  |
Line of Credit | Term Loan facility | Base Rate | Maximum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  | 0.75% |  |  |

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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://fasb.org/us-gaap/role/ref/legacyRef -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 4: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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