Convertible and Long-term Debt Obligations - Secured Revolving Credit Facility - Additional Information (Detail) - SolarCity [Member] - Syndicate of Banks [Member] - Revolving Credit Facility [Member] |
12 Months Ended |
|---|---|
Dec. 31, 2016 | |
| Debt Instrument [Line Items] | |
| Line of credit, additional spread interest rate | 2.25% |
| Line of credit, fee for undrawn commitments | 0.375% |
| Credit facility interest rate terms | Borrowed funds bear interest, at our option, at an annual rate of (a) 3.25% plus LIBOR or (b) 2.25% plus the highest of (i) the federal funds rate plus 0.50%, (ii) Bank of America’s published “prime rate” or (iii) LIBOR plus 1.00%. |
| LIBOR [Member] | |
| Debt Instrument [Line Items] | |
| Line of credit, additional spread interest rate | 1.00% |
| Line of credit, additional interest rate | 3.25% |
| Federal Funds Purchased | |
| Debt Instrument [Line Items] | |
| Line of credit, additional spread interest rate | 0.50% |