| Component: (Network and Table) | |
|---|---|
| Network | 100570 - Disclosure - Long-term Debt, Net - Schedule of Maturities of Long-term Debt (Details) (http://www.cobaltintl.com/20161231/taxonomy/role/DisclosureLongTermDebtNetScheduleOfMaturitiesOfLongTermDebtDetails) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0001471261 (http://www.sec.gov/CIK) |
| Maturities Of Long Term Debt [Abstract] | Period [Axis] |
|---|---|
2016-12-31 | |
Maturities Of Long Term Debt [Abstract] | |
Principal outstanding, 2017 | |
Principal outstanding, 2018 | |
Principal outstanding, 2019 | |
Principal outstanding, 2020 | |
Principal outstanding, 2021 | |
Principal outstanding, Thereafter |