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Long-Term Debt - Additional Information - Other (Detail) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 USD ($) SecurityLoan | Dec. 31, 2016 USD ($)
Debt Instrument [Line Items] |  |
Interest at a weighted-average fixed rate | 4.30% | 4.00%
Long term debt principal repayments in 2018 | $ 800,000,000 |
Long term debt principal repayments in 2019 | 200,000,000 |
Long term debt principal repayments in 2020 | 1,100,000,000 |
Long term debt principal repayments in 2021 | 700,000,000 |
Long term debt principal repayments in 2022 | 300,000,000 |
Long term debt principal repayments thereafter | $ 300,000,000 |
Number of loan agreement | SecurityLoan | 5 |
Minimum level of free cash be maintained as per loan agreements | $ 100,000,000 | $ 50,000,000
Minimum |  |
Debt Instrument [Line Items] |  |
Vessel market value to loan ratio | 118.50% |
Vessel market value to loan minimum required ratio | 105.00% |
Revolving credit lines maturity period | 6 months |
Free liquidity and undrawn revolving credit line as percentage of debt | 5.00% |
Maximum |  |
Debt Instrument [Line Items] |  |
Vessel market value to loan ratio | 243.20% |
Vessel market value to loan minimum required ratio | 135.00% |
Free liquidity and undrawn revolving credit line as percentage of debt | 7.50% |
Teekay Parent |  |
Debt Instrument [Line Items] |  |
Amount of free liquidity and undrawn revolving credit line | $ 46,000,000 |
Teekay Tankers |  |
Debt Instrument [Line Items] |  |
Amount of free liquidity and undrawn revolving credit line | 55,100,000 |
Teekay Tankers | Long-term Debt |  |
Debt Instrument [Line Items] |  |
Debt guaranteed | 252,700,000 |
Teekay Tankers | Teekay Parent | Long-term Debt |  |
Debt Instrument [Line Items] |  |
Debt guaranteed | $ 252,700,000 | $ 150,000,000

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- Definition Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04.(a)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 + Details
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