Lessee, Operating Lease, Extension Of Term Of Contract

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Number Of Vessels Chartered In

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Stated value of common units of ownership issued by a limited liability company (LLC).

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Represents a (noncash) issuance of additional equity interests to the parent by a subsidiary during the period, thereby effecting a change in total (consolidated) equity attributable to the parent. The additional equity interest represented by this element increases the parent's controlling interest in the subsidiary.

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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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This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

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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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Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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The number of limited partner units issued.

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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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Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests).

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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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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) shares in Thousands, $ in Thousands		4 Months Ended	12 Months Ended			21 Months Ended
	May 08, 2019 USD ($)	May 08, 2019 USD ($) vessel	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2020 USD ($)	May 11, 2020 USD ($) shares	Sep. 30, 2018
Altera
Related Party Transaction [Line Items]
Due from Affiliate, Noncurrent	$ 25,000	$ 25,000
Proceeds from sale of assets, net of cash sold (notes 13 and 18)	$ 100,000
Equity Method Investment, Other than Temporary Impairment					$ 64,900
Equity Method Investment, Realized Gain (Loss) on Disposal					8,900
Equity-accounted joint ventures \| LNG Carriers \| Income (loss) from Discontinued Operation
Related Party Transaction [Line Items]
Revenue from related parties			$ 82,800	$ 78,300	68,800
Altera
Related Party Transaction [Line Items]
Revenue from related parties					7,600
Altera \| Shuttle Tankers
Related Party Transaction [Line Items]
Number Of Vessels Chartered In \| vessel		2
Altera \| Fso [Member]
Related Party Transaction [Line Items]
Number Of Vessels Chartered In \| vessel		3
Altera \| Technical Services
Related Party Transaction [Line Items]
Related party expenses					(9,600)
Altera \| Time-Charter Hire Expense [Member]
Related Party Transaction [Line Items]
Related party expenses		$ (20,800)
Altera
Related Party Transaction [Line Items]
Equity Method Investment, Other than Temporary Impairment					64,900
Equity Method Investment, Realized Gain (Loss) on Disposal					8,900
Seapeak \| Elimination of Teekay LNG's IDR in exchange for units issued
Related Party Transaction [Line Items]
Limited Partners' Capital Account, Units Issued \| shares							10,750
Common Unit, Issuance Value							$ 122,600
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Additional Interest Issued to Parent			116,600
Seapeak \| Teekay Lng Marubeni Joint Venture [Member] \| Time-Charter Hire Expense [Member]
Related Party Transaction [Line Items]
Related party expenses			(23,500)	(23,600)	$ (20,000)
Revolving Credit Facilities due through December 2024
Related Party Transaction [Line Items]
Credit facility, maximum borrowing capacity			$ 344,900	$ 438,400		$ 438,400
Teekay Lng Marubeni Joint Venture [Member] \| Seapeak
Related Party Transaction [Line Items]
Equity Method Investment, Ownership Percentage			52.00%
Lessee, Operating Lease, Term of Contract								2 years
Lessee, Operating Lease, Extension Of Term Of Contract						21 months
Retained Earnings \| Seapeak \| Elimination of Teekay LNG's IDR in exchange for units issued
Related Party Transaction [Line Items]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Additional Interest Issued to Parent			$ 116,600
Non-controlling Interest \| Seapeak \| Elimination of Teekay LNG's IDR in exchange for units issued
Related Party Transaction [Line Items]
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests			107,600
Accumulated Other Comprehensive Loss \| Seapeak \| Elimination of Teekay LNG's IDR in exchange for units issued
Related Party Transaction [Line Items]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Additional Interest Issued to Parent			$ 9,000