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Related Party Tranactions Related Party Transactions (Details) |  |  | 1 Months Ended | 3 Months Ended | 4 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
May 08, 2019 USD ($) vessel | Jan. 01, 2018 Subsidiaries | May 31, 2019 USD ($) | May 08, 2019 USD ($) | Sep. 30, 2018 | Jun. 30, 2019 USD ($) | Jun. 30, 2018 USD ($) | May 08, 2019 USD ($) | Jun. 30, 2019 USD ($) | Jun. 30, 2018 USD ($) | Dec. 31, 2018 USD ($) | Mar. 31, 2018 USD ($)
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 |  |  |  |  |  | 3,100,000 |  |  | 8,700,000 |  |  |
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 |  |  |  | $ 2,300,000 |  |  | 4,500,000 | 7,600,000 |  | 11,100,000 |  |
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 |  |  |  | 3,300,000 |  |  | 6,800,000 |  |  | 13,300,000 |  |
Teekay Offshore [Member] | Time-Charter Hire Expense [Member] |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction, Expenses from Transactions with Related Party |  |  |  | 6,100,000 |  |  | 14,000,000 | 20,800,000 |  | 28,000,000 |  |
LNG Carriers [Member] | Equity Method Investee [Member] |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue from Related Parties |  |  |  |  |  | $ 16,800,000 | $ 13,100,000 |  | $ 32,600,000 | $ 25,700,000 |  |
Shuttle Tankers | Teekay Offshore [Member] |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number Of Vessels | vessel | 2 |  |  |  |  |  |  |  |  |  |  |
FSO | Teekay Offshore [Member] |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number Of Vessels | vessel | 3 |  |  |  |  |  |  |  |  |  |  |
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 |  | $ 100,000,000 |  |  |  |  |  |  |  |  |
Equity Method Investment, Other than Temporary Impairment |  |  |  |  |  |  |  |  | $ 64,900,000 |  |  |
Gain (Loss) on Sale of Equity Investments | $ 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 |  |  |  |  |  | $ 886,779,169 |  |  | $ 886,779,169 |  |  |
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

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