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Number of Variable Interest Entities

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Percentage of assets, liabilities and results of business acquired

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Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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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.

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Amount of lessee's right to use underlying asset under operating lease.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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Summary of Significant Accounting Policies - Additional Information (Detail) $ in Thousands		12 Months Ended
	Nov. 25, 2019	Dec. 31, 2019 USD ($) shares	Dec. 31, 2018 USD ($) entity shares	Dec. 31, 2017 USD ($)	Jan. 01, 2019 USD ($)	Nov. 27, 2017	May 31, 2017	Aug. 31, 2014
Significant Accounting Policies [Line Items]
Cost of Goods and Services Sold		$ 402,294	$ 381,306	$ 77,368
Accounts receivable, including affiliate balances of $nil (2018 - $2.1 million) (notes 1 and 2)		95,648	17,365
Operating lease right-of-use asset (notes 2 and 12)		$ 19,560	$ 0
Percentage of voting interests acquired				50.00%
Number of VIEs \| entity			14
Ownership percentage		100.00%
Vessels and equipment, useful life		25 years
Depreciation of vessels and equipment excluding amortization of dry-docking expenditure		$ 95,100	$ 95,200	$ 80,100
Conversion ratio	0.125
Minimum [Member]
Significant Accounting Policies [Line Items]
Ownership percentage		11.30%
Maximum
Significant Accounting Policies [Line Items]
Ownership percentage		50.00%
TIL
Significant Accounting Policies [Line Items]
Ownership percentage						11.30%
Entities Under Common Control \| Teekay Tanker Operations Ltd
Significant Accounting Policies [Line Items]
Percentage of voting interests acquired								50.00%
Entities Under Common Control \| Teekay Tanker Operations Ltd
Significant Accounting Policies [Line Items]
Percentage of voting interests acquired							50.00%
Teekay Corporation \| Entities Under Common Control \| Teekay Tanker Operations Ltd
Significant Accounting Policies [Line Items]
Percentage of voting interests acquired								50.00%
Percentage of assets, liabilities and results of business acquired							100.00%
Accounting Standards Update 2014-09 [Member]
Significant Accounting Policies [Line Items]
Cost of Goods and Services Sold			292,600
Accounts receivable, including affiliate balances of $nil (2018 - $2.1 million) (notes 1 and 2)			$ 17,900
ASU 2016-02
Significant Accounting Policies [Line Items]
Operating lease right-of-use asset (notes 2 and 12)					$ 11,000
Dry-Docking Activity \| Minimum [Member]
Significant Accounting Policies [Line Items]
Vessels and equipment, useful life		2 years 6 months
Dry-Docking Activity \| Maximum
Significant Accounting Policies [Line Items]
Vessels and equipment, useful life		5 years
Class A
Significant Accounting Policies [Line Items]
Common Stock, Shares, Outstanding \| shares		29,000,000.0	29,000,000
Class B
Significant Accounting Policies [Line Items]
Common Stock, Shares, Outstanding \| shares		4,600,000.0	4,600,000.0
Pre Stock Split [Member] \| Class A
Significant Accounting Policies [Line Items]
Common Stock, Shares, Outstanding \| shares		232,000,000
Pre Stock Split [Member] \| Class B
Significant Accounting Policies [Line Items]
Common Stock, Shares, Outstanding \| shares		37,000,000
Class B
Significant Accounting Policies [Line Items]
Common Stock, Shares, Outstanding \| shares		4,600,000
Class A
Significant Accounting Policies [Line Items]
Common Stock, Shares, Outstanding \| shares		29,000,000
Reimbursable voyage costs [Member] \| Accounting Standards Update 2014-09 [Member]
Significant Accounting Policies [Line Items]
Cost of Goods and Services Sold			$ 20,700