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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+ Details

Related Party Transactions - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Time-Charter Hire Expense [Member] \| Teekay Lng Marubeni Joint Venture [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party	$ 5.7	$ 6.0	$ 17.4	$ 17.3
LNG Carriers [Member] \| Equity Method Investee [Member]
Related Party Transaction [Line Items]
Revenue from Related Parties	$ 21.3	$ 21.1	$ 62.1	$ 58.5
Teekay Lng Marubeni Joint Venture [Member]
Related Party Transaction [Line Items]
Equity Method Investment, Ownership Percentage	52.00%		52.00%