v3.10.0.1

Long-Term Debt - Additional Information - Revolvers and Term Loans (Details) | 1 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2017 USD ($) credit_facility | Sep. 30, 2018 USD ($) loan credit_facility vessel | Dec. 31, 2017 USD ($) | Jan. 31, 2016 USD ($)
Debt Instrument [Line Items] |  |  |  |
Total principal | $ 963,247,000 | $ 814,709,000 | $ 963,247,000 |
Secured Debt Two | Guaranteed By Teekay Corporation |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt term |  | 6 months |  |
Maintain the greater of free cash liquidity |  | $ 100,000,000 |  |
Minimum liquidity as a percentage of debt |  | 7.50% |  |
Term Loans |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total principal | 423,512,000 | $ 348,946,000 | 423,512,000 |
Remaining Secured Debt | Guaranteed By Teekay Corporation |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maintain the greater of free cash liquidity |  | $ 50,000,000 |  |
Minimum liquidity as a percentage of debt |  | 5.00% |  |
Term Loan Due 2021 | Term Loans |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Number of debt instruments | credit_facility |  | 3 |  |
Total principal | $ 423,500,000 | $ 348,900,000 | $ 423,500,000 |
Debt instrument, interest rate, stated percentage | 5.40% | 5.40% | 5.40% |
Maturing in May 2021 | Term Loans |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Number of debt instruments | loan |  | 2 |  |
Revolver 2017 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Number of debt instruments | credit_facility | 2 |  |  |
Debt instrument, face amount | $ 270,000,000.00 |  | $ 270,000,000.00 |
Repayments of debt | $ 215,800,000 |  |  |
Collateral, number of vessels | vessel |  | 8 |  |
Minimum hull coverage ratios |  | 125.00% |  |
Actual hull coverage ratio | 191.00% | 174.00% | 191.00% |
Revolver 2017 | Not Guaranteed By Teekay Corporation |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Minimum liquidity covenant requirement |  | $ 35,000,000 |  |
Minimum liquidity as a percentage of consolidated debt covenant requirement |  | 5.00% |  |
2016 Debt Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, face amount |  |  |  | $ 894,400,000.0
Collateral, number of vessels | vessel |  | 29 |  |
Minimum hull coverage ratios |  | 125.00% |  |
Actual hull coverage ratio | 145.00% | 134.00% | 145.00% |
2016 Debt Facility | Not Guaranteed By Teekay Corporation |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Minimum liquidity covenant requirement |  | $ 35,000,000 |  |
Minimum liquidity as a percentage of consolidated debt covenant requirement |  | 5.00% |  |
Remaining Revolving Credit Facilities Maturing in November 2018 | Revolving Credit Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total principal |  | $ 47,600,000 |  |
Remaining Secured Debt | Term Loans |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Number of debt instruments | credit_facility |  | 2 |  |
Collateral, number of vessels | vessel |  | 6 |  |
Minimum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Percentage of margin |  | 0.30% |  |
Minimum | Revolver 2017 | Not Guaranteed By Teekay Corporation |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt term |  | 6 months |  |
Minimum | 2016 Debt Facility | Not Guaranteed By Teekay Corporation |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt term |  | 6 months |  |
Maximum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Percentage of margin |  | 2.75% |  |
LIBOR | Minimum | Term Loans |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Percentage of margin |  | 0.30% | 0.30% |
LIBOR | Maximum | Term Loans |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Percentage of margin |  | 2.00% | 2.00% |
Revolving Credit Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Total principal | $ 539,735,000 | $ 465,763,000 | $ 539,735,000 |
Revolving Credit Facility | Revolving Credit Facilities Due through 2022 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Number of debt instruments | credit_facility |  | 3 |  |
Revolving credit facilities borrowing capacity | 628,300,000.0 | $ 500,600,000.0 | 628,300,000.0 |
Undrawn amount of revolving credit facility | $ 88,600,000 | 34,800,000 | $ 88,600,000 |
Long-term debt, maturities, revolving credit facility, decrease in amount available remaining fiscal year |  | 51,400,000 |  |
Long-term debt, maturities, revolving credit facility, decrease in amount available, year 2 |  | 19,200,000 |  |
Long-term debt, maturities, revolving credit facility, decrease in amount available, year 3 |  | 19,200,000 |  |
Long-term debt, maturities, revolving credit facility, decrease in amount available, year 4 |  | 311,900,000 |  |
Long-term debt, maturities, revolving credit facility, decrease in amount available, year 5 |  | $ 98,900,000 |  |
Revolving Credit Facility | Remaining Revolving Credit Facilities Maturing in November 2018 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Collateral, number of vessels | vessel |  | 3 |  |
Minimum hull coverage ratios |  | 105.00% |  |
Actual hull coverage ratio | 118.00% | 150.00% | 118.00% |
Revolving Credit Facility | LIBOR | Minimum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Percentage of margin |  | 2.00% | 0.45% |
Revolving Credit Facility | LIBOR | Maximum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Percentage of margin |  | 2.75% | 2.75% |
Remaining Revolving Credit Facilities | Guaranteed By Teekay Corporation |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maintain the greater of free cash liquidity |  | $ 50,000,000 |  |
Minimum liquidity as a percentage of debt |  | 5.00% |  |
Remaining Revolving Credit Facilities | Minimum | Guaranteed By Teekay Corporation |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt term |  | 6 months |  |
Remaining Secured Debt | Minimum | Guaranteed By Teekay Corporation |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt term |  | 6 months |  |

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