Acquisition of Ship-to-Ship Transfer Business - Additional Information (Detail) - Ship to Ship Transfer Business [Member] $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended
Jul. 31, 2015 USD ($) Vessel $ / shares shares	Mar. 31, 2016 USD ($)
Business Acquisition [Line Items]
Purchase price of acquisition	$ 47.3
Goodwill, purchase accounting adjustments		$ 8.1
Finite-lived intangible assets, purchase accounting adjustments		$ (8.4)
Teekay Corporation [Member] \| Class B [Member]
Business Acquisition [Line Items]
Number of common stock issued \| shares	6.5
Shares issued, price per share \| $ / shares	$ 6.99
Working Capital [Member]
Business Acquisition [Line Items]
Purchase price of acquisition	$ 1.8
Ship-to-ship Support Vessel [Member]
Business Acquisition [Line Items]
Number of vessels \| Vessel	6
Aframax Tanker [Member]
Business Acquisition [Line Items]
Number of vessels \| Vessel	1

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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-Name Accounting Standards Codification
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Amount of increase (decrease) to assets, excluding financial assets and goodwill, lacking physical substance with a finite life for purchase accounting adjustments.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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