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Long-Term Debt - Additional Information - Term Loans (Detail) $ in Thousands, € in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2018 USD ($) subsidiary contract term_loan vessel | Dec. 31, 2017 USD ($) vessel | Dec. 31, 2016 USD ($) | Dec. 31, 2018 EUR (€) | Dec. 31, 2017 EUR (€)
Debt Instrument [Line Items] |  |  |  |  |
Carrying amount of long-term debt | $ 3,363,127 | $ 3,449,611 |  |  |
Unrealized foreign exchange gain (loss) | $ 6,140 | (26,463) | $ (6,548) |  |
Secured debt |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Number of debt instruments | term_loan | 11 |  |  |  |
Carrying amount of long-term debt | $ 1,500,000 | $ 1,400,000 |  |  |
Number of vessels | vessel | 24 | 22 |  |  |
Euro-denominated Term Loans due through 2024 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Carrying amount of long-term debt | $ 193,781 | $ 232,957 |  |  |
Euro-denominated Term Loans due through 2024 | Minimum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument spread on variable rate |  | 0.60% |  |  |
Euro-denominated Term Loans due through 2024 | Maximum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument spread on variable rate |  | 2.25% |  |  |
Teekay LNG | Euro-denominated Term Loans due through 2024 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Number of debt instruments | term_loan | 2 |  |  |  |
Carrying amount of long-term debt | $ 193,800 | $ 233,000 |  | € 169.0 | € 194.1
Number of long term time charter contracts | contract | 2 |  |  |  |
Teekay LNG | Euro-denominated Term Loans due through 2024 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Number of vessels | vessel | 2 |  |  |  |
Number of subsidiaries | subsidiary | 1 |  |  |  |
Teekay LNG | Euro-denominated Term Loans due through 2024 | Minimum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument spread on variable rate | 0.60% |  |  |  |
Teekay LNG | Euro-denominated Term Loans due through 2024 | Maximum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument spread on variable rate | 1.95% |  |  |  |
Fixed Rate | Remaining Term Loans | Secured debt |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Number of debt instruments | term_loan | 2 |  |  |  |

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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