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Commitments and Contingencies - Additional Information - Redeemable Non-Controlling Interest (Detail) - Teekay Offshore - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended
Jul. 31, 2015
Jun. 30, 2016
Jul. 31, 2015
Jun. 30, 2017
Redeemable Noncontrolling Interest [Line Items]        
Weighted average price of common units (dollars per share) $ 35.925      
Incentive distribution   $ 20.6    
Series C Preferred Stock        
Redeemable Noncontrolling Interest [Line Items]        
Units issued (in units)     10,400,000  
Preferred units dividend rate     8.60%  
Contributed capital $ 249.8   $ 249.8  
Conversion period   18 months 18 months  
Shares issued upon conversion (in units) 1   1  
Period for optional conversion to common units     3 years  
Series C-1 Preferred Units        
Redeemable Noncontrolling Interest [Line Items]        
Shares issued upon conversion (in units)       1.474
Conversion of convertible securities (in shares)   8,500,000    
Percent of issuance price   150.00%    
Issuance price (in dollars per share)   $ 16.25    
Number of quarters   32 months    
Percent discount on 10 days   2.00%    
Consecutive trading days   10 days    
Series D Preferred Stock        
Redeemable Noncontrolling Interest [Line Items]        
Units issued (in units)   4,000,000    
Preferred units dividend rate   10.50%    
Percent discount on 10 days   4.00%    
Consecutive trading days   10 days    
Premium to liquidation value in redemption after June 29, 2021   10.00%    
Premium to liquidation value in redemption after June 29, 2022   5.00%    
Redemption price per share (in dollars per share)   $ 4.00    
Percent of common units purchased   90.00%    
Change in ownership percentage of the general partner (or more)   50.00%    
Affiliated Entity | Series D Preferred Stock        
Redeemable Noncontrolling Interest [Line Items]        
Units issued (in units)   1,040,000    
Induced Exchange of Series C Preferred Units | Series C Preferred Stock        
Redeemable Noncontrolling Interest [Line Items]        
Shares converted (in shares)   1,900,000    
Inducement Premium on Series C Preferred Units Conversion        
Redeemable Noncontrolling Interest [Line Items]        
Conversion of convertible securities (in shares)   6,400,000    
Conversion of units   $ 37.7    
Extinguishment of Series C Preferred Units | Series C Preferred Stock        
Redeemable Noncontrolling Interest [Line Items]        
Shares converted (in shares)   8,500,000    
Non-controlling Interests        
Redeemable Noncontrolling Interest [Line Items]        
Incentive distribution   $ 14.6    
Non-controlling Interests | Inducement Premium on Series C Preferred Units Conversion        
Redeemable Noncontrolling Interest [Line Items]        
Conversion of units   26.7    
Retained Earnings        
Redeemable Noncontrolling Interest [Line Items]        
Incentive distribution   6.0    
Retained Earnings | Inducement Premium on Series C Preferred Units Conversion        
Redeemable Noncontrolling Interest [Line Items]        
Conversion of units   $ 11.0    
Limited Partner | Common Stock        
Redeemable Noncontrolling Interest [Line Items]        
Conversion of convertible securities (in shares)   8,300,000