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Long-Term Debt - Additional Information - Term Loans (Detail) $ in Thousands, € in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2017 USD ($) vessel | Jun. 30, 2016 USD ($) | Jun. 30, 2017 USD ($) subsidiary term_loan vessel | Jun. 30, 2016 USD ($) | Dec. 31, 2016 USD ($) | Jun. 30, 2017 EUR (€) vessel | Dec. 31, 2016 EUR (€)
Debt Instrument [Line Items] |  |  |  |  |  |  |
Long-term debt | $ 6,572,922 |  | $ 6,572,922 |  | $ 6,639,546 |  |
Unrealized foreign exchange loss | 17,342 | $ 15,157 | $ 20,246 | $ 25,671 |  |  |
Teekay LNG | Euro-denominated Term Loans due through 2023 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Number of debt instruments | term_loan |  |  | 2 |  |  |  |
Long-term debt | $ 230,300 |  | $ 230,300 |  | $ 219,700 | € 201.6 | € 208.9
Reference rate on variable rate of the debt instrument |  |  | EURIBOR |  |  |  |
Number of vessels | vessel | 2 |  | 2 |  |  | 2 |
Number of subsidiaries | subsidiary |  |  | 1 |  |  |  |
Teekay LNG | Euro-denominated Term Loans due through 2023 | Maximum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt instrument spread on variable rate |  |  | 2.25% |  | 2.25% |  |
Teekay LNG | Euro-denominated Term Loans due through 2023 | Minimum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt instrument spread on variable rate |  |  | 0.60% |  | 0.60% |  |

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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450222&loc=d3e30840-110895 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64836518&loc=d3e30700-110894 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=64836518&loc=d3e30690-110894 + Details
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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: 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(a)(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: 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 Reference 3: 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 + Details
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