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Number of Subsidiaries

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No definition available.

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

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Amount of gain (loss) from deconsolidation of subsidiary and derecognition of group of assets constituting transfer of business or nonprofit activity, excluding conveyance of oil and gas mineral rights and transfer of good or service in contract with customer.

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Amount of receivables due from an entity that is affiliated with the reporting entity by means of direct or indirect ownership, due after 1 year (or 1 business cycle).

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For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.

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Carrying amount as of the balance sheet date of obligations due all related parties.

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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 gain (loss) on sale or disposal of an equity method investment.

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Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP).

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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.

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The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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Line items represent financial 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.

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No definition available.

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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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Related Party Transactions Related Party Transactions (Details)			1 Months Ended	3 Months Ended		4 Months Ended	9 Months Ended
	May 08, 2019 USD ($)	May 08, 2019 USD ($)	Sep. 30, 2018	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	May 08, 2019 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)	Mar. 31, 2018 USD ($)	Jan. 01, 2018 Subsidiaries
Related Party Transaction [Line Items]
Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest		49.00%
Proceeds from sale of equity-accounted investments and related assets (note 4)							$ 100,000,000	$ 54,438,000
Loss on deconsolidation of Teekay Offshore (note 4)				$ 0	$ 0		0	(7,070,000)
Teekay Lng Marubeni Joint Venture [Member] \| Time-Charter Hire Expense [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party				5,300,000			14,000,000	1,700,000
Additional Time Period For Fixed Rate Time Charters Contract			2 years
Technical Services [Member] \| Teekay Offshore [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party						$ 9,600,000
Teekay Offshore [Member]
Related Party Transaction [Line Items]
Revenue from Related Parties					5,100,000	7,600,000		16,200,000
Due from Related Parties									$ 83,100,000
Due to Related Parties									$ 59,300,000
Teekay Offshore [Member] \| Technical Services [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party					5,900,000			19,200,000
Teekay Offshore [Member] \| Time-Charter Hire Expense [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party					14,400,000	20,800,000		42,400,000
LNG Carriers [Member] \| Equity Method Investee [Member]
Related Party Transaction [Line Items]
Revenue from Related Parties				$ 17,400,000	$ 14,400,000		$ 50,000,000	$ 40,100,000
Teekay Lng Marubeni Joint Venture [Member]
Related Party Transaction [Line Items]
Equity Method Investment, Ownership Percentage				52.00%			52.00%
Teekay Offshore [Member]
Related Party Transaction [Line Items]
Due from Affiliate, Noncurrent	$ 25,000,000	$ 25,000,000				$ 25,000,000
Proceeds from sale of equity-accounted investments and related assets (note 4)	100,000,000
Equity Method Investment, Other than Temporary Impairment							$ 64,900,000
Equity Method Investment, Realized Gain (Loss) on Disposal	$ 8,900,000
Teekay Offshore [Member] \| Brookfield Business Partners L.P. [Member]
Related Party Transaction [Line Items]
Percentage of ownership acquired											100.00%
Number of Subsidiaries \| Subsidiaries											7
Revolving Credit Facilities
Related Party Transaction [Line Items]
Credit facility, maximum borrowing capacity				$ 869,523,100			$ 869,523,100
Revolving Credit Facilities \| Teekay Offshore [Member]
Related Party Transaction [Line Items]
Credit facility, maximum borrowing capacity										$ 125,000,000
Revolving Credit Facilities \| Teekay Offshore [Member] \| Brookfield Business Partners L.P. [Member]
Related Party Transaction [Line Items]
Credit facility, maximum borrowing capacity										100,000,000
Parent Company [Member] \| Revolving Credit Facilities \| Teekay Offshore [Member]
Related Party Transaction [Line Items]
Credit facility, maximum borrowing capacity										$ 25,000,000