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Number Of Vessels

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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For contingent consideration arrangements recognized in connection with a business combination, this element represents a description of such arrangements.

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For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

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The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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The minimum amount the entity agreed to spend under the long-term purchase commitment.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Investments - Teekay Offshore Acquisition of ALP Maritime Services B.V. - Additional Information (Detail) (USD $)	12 Months Ended			0 Months Ended		1 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	May 02, 2013	Mar. 14, 2014	Mar. 14, 2014
Net Investment Income [Line Items]
General and administrative	$ 140,917,000us-gaap_GeneralAndAdministrativeExpense	$ 140,958,000us-gaap_GeneralAndAdministrativeExpense	$ 144,296,000us-gaap_GeneralAndAdministrativeExpense
Revenue	1,993,920,000us-gaap_Revenues	1,830,085,000us-gaap_Revenues	1,980,771,000us-gaap_Revenues
Net loss	124,002,000us-gaap_ProfitLoss	35,480,000us-gaap_ProfitLoss	(311,116,000)us-gaap_ProfitLoss
Newbuildings [Member]
Net Investment Income [Line Items]
Expected cost of project	2,800,000,000
ALP Maritime Services B.V [Member]
Net Investment Income [Line Items]
Revenue	500,000
Net loss	(2,300,000)
Teekay Offshore [Member]
Net Investment Income [Line Items]
Purchase price paid in cash				253,000,000
Teekay Offshore [Member] \| Long Distance Towing And Offshore Installation [Member]
Net Investment Income [Line Items]
Number of vessels	6
Teekay Offshore [Member] \| ALP Maritime Services B.V [Member]
Net Investment Income [Line Items]
Percentage of ownership acquired					100.00%	100.00%
Expected cost of project					258,000,000
Purchase price paid in cash					2,616,000	2,616,000
Business Combination, Contingent Consideration Arrangements, Description	Teekay Offshore has the option to pay up to 50% of this compensation through the issuance of common units of Teekay Offshore. Each of the contingent compensation amounts are payable only if the three former shareholders are employed by ALP at the time the performance conditions are met.
General and administrative	500,000
Acquisition and success fee	1,000,000
Teekay Offshore [Member] \| ALP Maritime Services B.V [Member] \| Majority Shareholder [Member]
Net Investment Income [Line Items]
Number of shareholders					3	3
Teekay Offshore [Member] \| ALP Maritime Services B.V [Member] \| Delivered [Member] \| Majority Shareholder [Member]
Net Investment Income [Line Items]
Contingent consideration payable					2,400,000	2,400,000
Teekay Offshore [Member] \| ALP Maritime Services B.V [Member] \| Contingent Consideration On Operating Results [Member] \| Majority Shareholder [Member]
Net Investment Income [Line Items]
Contingent consideration payable					$ 2,600,000	$ 2,600,000
Teekay Offshore [Member] \| ALP Maritime Services B.V [Member] \| Newbuildings [Member] \| Long Distance Towing And Offshore Installation [Member]
Net Investment Income [Line Items]
Number of vessels						4