Long-term Debt - Schedule of Outstanding Non-Recourse Asset-Backed Debt and Bank Loans (Footnotes) (Details) - USD ($) $ in Millions |
Jun. 30, 2018 |
Dec. 31, 2017 |
|---|---|---|
| Collateral Pledged [Member] | ||
| Financial Instruments Owned and Pledged as Collateral [Line Items] | ||
| Restricted cash | $ 68 | $ 59 |
| Asset-Backed Non-recourse Debt [Member] | ||
| Financial Instruments Owned and Pledged as Collateral [Line Items] | ||
| Total collateral pledged against our nonrecourse debt | $ 1,503 | $ 1,545 |
| 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. No definition available.
|
| X | ||||||||||
- Definition Sum of the carrying amounts as of the date of the latest financial statement presented of securities which are owned but transferred to another party to serve as collateral to partially or fully secure a debt obligation, repurchase agreement or other current or potential obligation, and for which the transferee is not permitted to sell or re-pledge them to an unrelated party. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|