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Summary of Significant Accounting Policies - Non-controlling Interests (Detail) - USD ($) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2024 | Jan. 13, 2022 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |
Net income (loss) attributable to non-controlling interests |  |  | $ 267,849 | $ 366,782 | $ 110,953
Net income attributable to the shareholders of Teekay Corporation |  |  | 133,770 | 150,641 | 78,407
Net income |  |  | 401,619 | 517,423 | 189,360
Undistributed Earnings |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |
Net income (loss) attributable to non-controlling interests |  |  | 267,849 | 366,782 | 109,153
Non-public partially-owned subsidiaries |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |
Net income (loss) attributable to non-controlling interests |  |  |  |  | 872
Preferred Partner |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |
Net income (loss) attributable to non-controlling interests |  |  |  |  | 928
Entities Under Common Control | Teekay Management Companies | Supplement retirement contribution plan |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |
Business Combination, Consideration Transferred | $ 6,000 |  |  |  |
Teekay Tankers |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |
Net income (loss) attributable to non-controlling interests |  |  | 267,792 | 366,909 | 172,857
Net income attributable to the shareholders of Teekay Corporation |  |  | 124,131 | 146,762 | 56,229
Net income |  |  | 391,923 | 513,671 | 229,086
Increase Decrease in Net Income Loss Attributable to Controlling Interest, Realized Gain Loss on Sale of Vessels Previously Deferred |  |  | (10,100) | 0 | 10,600
Teekay Tankers | Undistributed Earnings |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |
Net income (loss) attributable to non-controlling interests |  |  | 267,792 | 366,909 | 172,857
Net income attributable to the shareholders of Teekay Corporation |  |  | 124,131 | 146,762 | 56,229
Teekay Tankers | Entities Under Common Control |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |
Equity Distribution | $ 61,400 |  |  |  |
Other Entities and Eliminations |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |
Net income (loss) attributable to non-controlling interests |  |  | 57 | (127) | 24
Other Entities and Eliminations | Undistributed Earnings |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |
Net income (loss) attributable to non-controlling interests |  |  | $ 57 | $ (127) | 24
Seapeak |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |
Net income (loss) attributable to non-controlling interests |  |  |  |  | (61,928)
Net income attributable to the shareholders of Teekay Corporation |  |  |  |  | 100,364
Net income |  |  |  |  | 38,436
Disposal Group, Increase Decrease in Net Income Loss Attributable To Noncontrolling Interest, Realized Gain Loss on Sale of Vessels Previously Deferred |  | $ 84,800 |  |  |
Seapeak | Undistributed Earnings |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |
Net income (loss) attributable to non-controlling interests |  |  |  |  | (63,728)
Net income attributable to the shareholders of Teekay Corporation |  |  |  |  | 100,364
Seapeak | Non-public partially-owned subsidiaries |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |
Net income (loss) attributable to non-controlling interests |  |  |  |  | 872
Seapeak | Preferred Partner |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |
Net income (loss) attributable to non-controlling interests |  |  |  |  | $ 928
Preferred Unitholders | Seapeak |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners |  | 100.00% |  |  |

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