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Debt - Mortgage Notes Payable (Details) - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Debt Instrument [Line Items] |  |
Non recourse mortgage notes | $ 57 | $ 61
Non-recourse mortgage note due January 1, 2021 |  |
Debt Instrument [Line Items] |  |
Non recourse mortgage notes | $ 57 |
Interest rate stated, percentage | 5.14% |
Net book value of collateralized properties | $ 162 |

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: 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(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Details
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