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Capital Stock - Additional Information, Stock-based compensation of Subsidiaries (Details) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2017 | Mar. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Stock options granted (in shares) |  |  |  |  |  | 0 | 0 | 2,629,000
Stock option per share value (dollars per share) |  |  |  |  |  | $ 0 | $ 0 | $ 3.98
Non-Management Directors | Seapeak |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Number of common shares or units issued related to the exercise of share based compensation during the period |  |  |  |  |  | 26,985 | 29,595 | 35,419
Non-Management Directors | Teekay Tankers and Seapeak |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Shares Granted, Value, Share-based Payment Arrangement, before Forfeiture |  |  |  |  |  | $ 0.7 | $ 0.6 | $ 0.7
Restricted Stock Awards |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Number of shares or units granted equity based compensation awards |  |  |  |  |  | 149,366 | 203,468 | 111,808
Stock Options |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Vesting period (in years) |  |  |  |  |  | 3 years |  |
Stock options granted (in shares) |  |  |  |  |  | 0 | 0 | 2,620,582
Stock option, term (in years) |  |  |  |  |  | 10 years |  |
Stock Options | Teekay Tankers and Seapeak |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Stock options granted (in shares) |  |  |  |  |  | 0 | 0 |
Stock Options | Officer | Teekay Tankers |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Vesting period (in years) |  |  | 3 years |  |  |  |  |
Stock options granted (in shares) |  |  | 218,223 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Exercise Price |  |  | $ 8.00 |  |  |  |  |
Stock option, term (in years) |  |  | 10 years |  |  |  |  |
Stock Options | Non-Management Directors | Teekay Tankers |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Stock options granted (in shares) |  |  |  | 58,843 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Exercise Price |  |  | $ 8.00 |  |  |  |  |
Stock option, term (in years) |  |  |  |  | 10 years |  |  |
Restricted Stock Units |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Number of shares or units granted equity based compensation awards |  |  |  |  |  | 355,944 | 986,314 | 831,118
Shares Granted, Value, Share-based Payment Arrangement, before Forfeiture |  |  |  |  |  | $ 1.4 | $ 3.1 | $ 3.3
Vesting period (in years) |  |  |  |  |  | 3 years |  |
Restricted Stock Units | Seapeak |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Number of shares or units granted equity based compensation awards | 67,102 | 243,940 | 80,100 |  |  |  |  |
Restricted Stock Units | Teekay Tankers and Seapeak |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Shares Granted, Value, Share-based Payment Arrangement, before Forfeiture | $ 2.8 | $ 6.2 | $ 2.0 |  |  |  |  |
Vesting period (in years) |  |  |  |  |  | 3 years |  |
Common Class A | Restricted Stock Units | Teekay Tankers |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Number of shares or units granted equity based compensation awards | 109,953 | 182,120 | 99,064 |  |  |  |  |
2007 LTIP [Member] | Common Class A | Non-Management Directors | Teekay Tankers |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Number of common shares or units issued related to the exercise of share based compensation during the period |  |  |  |  |  | 16,772 | 13,125 | 19,918

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