Equity-Accounted Investments (Detail) $ in Thousands	Sep. 30, 2018 USD ($)
Newbuildings
Long-term Purchase Commitment [Line Items]
2018	$ 2,300
2019	247,700
Teekay LNG \| BG Joint Venture \| Newbuildings \| Supply Commitment
Long-term Purchase Commitment [Line Items]
Credit facility, maximum borrowing capacity	519,000
Capital Addition Purchase Commitments, Equity Method Investee
Long-term Purchase Commitment [Line Items]
Total	578,811
2018	53,102
2019	$ 525,709

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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+ References

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77896938&loc=d3e25336-109308

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Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the remainder of the 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.

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