Line items represent reporting concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 12
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Number Of Vessels

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
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Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership.

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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 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Amount of dividends or interest. Give totals for each group. If operations of any controlled companies are different in character from those of the company, group such affiliates (1) within divisions and (2) by type of activities.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(2))
-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611322-123010

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(5))
-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611322-123010

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Investments - Teekay LNG-Yamal LNG Joint Venture - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) vessel	Dec. 31, 2015 USD ($)	Jul. 31, 2014 vessel	Nov. 30, 2013 vessel
Net Investment Income [Line Items]
Equity method investment, ownership interest	100.00%	17.62%
Number of vessels \| vessel				5
Advances to equity accounted joint venture partner	$ 1,299,854	$ 1,083,590
Teekay LNG [Member] \| Yamal LNG Joint Venture [Member]
Net Investment Income [Line Items]
Equity method investment, ownership interest			50.00%
Advances to equity accounted joint venture partner	146,700	96,900
Investments in and advances to affiliates	$ 9,400	$ 4,800
Teekay LNG [Member] \| Yamal LNG Joint Venture [Member] \| Newbuildings [Member]
Net Investment Income [Line Items]
Equity method investment, ownership interest	50.00%
Number of vessels \| vessel	6		6
Teekay LNG [Member] \| Yamal LNG Joint Venture [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Net Investment Income [Line Items]
Debt instrument spread on variable rate	3.00%