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- Definition

Ownership of stakeholders in outstanding common stock.

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- Definition

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

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-Publisher FASB
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- Definition

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

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- Definition

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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- Definition

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

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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 (Detail)	3 Months Ended		12 Months Ended
Related Party Transactions (Detail)	Dec. 31, 2017 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2017 USD ($) vessel	Mar. 31, 2018 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015
Related Party Transaction [Line Items]
Current portion of loans to equity-accounted investees (note 22)	$ 107,486,000	$ 107,486,000	$ 107,486,000		$ 9,471,000
Teekay Offshore
Related Party Transaction [Line Items]
Advances to Teekay Offshore	102,800,000	102,800,000	102,800,000
Current portion of loans to equity-accounted investees (note 22)	37,200,000	37,200,000	$ 37,200,000
Revenue from related parties		$ 17,800,000
Teekay Offshore \| Shuttle Tankers
Related Party Transaction [Line Items]
Number of vessels \| vessel			2
Teekay Offshore \| FSO
Related Party Transaction [Line Items]
Number of vessels \| vessel			3
Teekay Offshore \| Technical Services
Related Party Transaction [Line Items]
Expenses	$ 800,000
Teekay Offshore \| Time-Charter Hire Expense
Related Party Transaction [Line Items]
Expenses			$ 14,300,000
Resolute Investments, Ltd.
Related Party Transaction [Line Items]
Ownership percentage of Resolute outstanding common stock	31.90%	31.90%	31.90%		37.10%	39.10%
Revolving Credit Facilities
Related Party Transaction [Line Items]
Credit facility, maximum borrowing capacity	$ 1,340,455,288	$ 1,340,455,288	$ 1,340,455,288
Revolving Credit Facilities \| Subsequent Events \| Teekay Offshore
Related Party Transaction [Line Items]
Credit facility, maximum borrowing capacity				$ 125,000,000.0
Revolving Credit Facilities \| Subsequent Events \| Teekay Offshore \| Brookfield
Related Party Transaction [Line Items]
Credit facility, maximum borrowing capacity				100,000,000.0
Teekay Parent
Related Party Transaction [Line Items]
Current portion of loans to equity-accounted investees (note 22)	$ 736,938,000	$ 736,938,000	$ 736,938,000		$ 786,110,000
Teekay Parent \| Revolving Credit Facilities \| Subsequent Events \| Teekay Offshore
Related Party Transaction [Line Items]
Credit facility, maximum borrowing capacity				$ 25,000,000.0