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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%