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Capital Stock - Additional Information (Detail)
 1 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2015
USD ($)
$ / shares
shares
Jun. 30, 2014
$ / shares
shares
Mar. 31, 2014
USD ($)
$ / shares
shares
Mar. 31, 2013
USD ($)
shares
Jun. 30, 2015
Dec. 31, 2015
USD ($)
Times
$ / shares
shares
Dec. 31, 2014
USD ($)
$ / shares
shares
Dec. 31, 2013
USD ($)
$ / shares
shares
Dec. 31, 2012
shares
Dec. 31, 2008
USD ($)
Class of Stock [Line Items]                    
Preferred stock, share authorized           25,000,000 25,000,000      
Preferred stock, par value | $ / shares           $ 1 $ 1      
Common stock, share authorized           725,000,000 725,000,000      
Common stock, par value | $ / shares           $ 0.001 $ 0.001      
Number of common shares or units issued related to the exercise of share based compensation during the period           200,000 1,800,000      
Common stock, share issued           72,711,371 73,299,702      
Preferred stock, share issued           0 0      
Common stock, share outstanding           72,711,371 72,500,502      
Minimum percentage of shares acquired in exercisable rights           20.00%        
Minimum percentage of common stock acquired by stockholders for higher thresholds           15.00%        
Weighted-average grant-date fair value of options granted | $ / shares           $ 7.74 $ 11.50 $ 10.54    
Stock option per share value | $ / shares           $ 43.99 $ 56.76 $ 34.07    
Teekay Offshore [Member] | Non-management directors [Member]                    
Class of Stock [Line Items]                    
Number of common shares or units issued related to the exercise of share based compensation during the period           14,603 9,482 8,307    
Teekay LNG [Member] | Non-management directors [Member]                    
Class of Stock [Line Items]                    
Number of common shares or units issued related to the exercise of share based compensation during the period           10,447 9,521 7,362    
Teekay Tankers [Member] | Non-management directors [Member] | Class A [Member]                    
Class of Stock [Line Items]                    
Number of common shares or units issued related to the exercise of share based compensation during the period           51,948 17,073 142,157    
Teekay Tankers, Teekay Offshore and Teekay LNG [Member] | Non-management directors [Member]                    
Class of Stock [Line Items]                    
Common units aggregate value, granted | $           $ 1,000,000 $ 800,000 $ 1,000,000    
Tender Offers [Member]                    
Class of Stock [Line Items]                    
Minimum percentage of shares acquired in exercisable rights           20.00%        
Phantom unit awards [Member] | Teekay Offshore [Member]                    
Class of Stock [Line Items]                    
Number of shares or units granted equity based compensation awards 102,843   67,569 63,309            
Phantom unit awards [Member] | Teekay LNG [Member]                    
Class of Stock [Line Items]                    
Number of shares or units granted equity based compensation awards 32,054   31,961 36,878            
Restricted stock units [Member]                    
Class of Stock [Line Items]                    
Vesting period           3 years        
Value of each restricted stock unit and performance share unit in shares           Each restricted stock unit and performance share unit is equivalent in value to one share of the Company's common stock plus reinvested dividends from the grant date to the vesting date.        
Number of shares or units granted equity based compensation awards           63,912 81,388 158,957    
Fair value of granted stock | $           $ 2,800,000 $ 4,600,000 $ 5,400,000    
Vested restricted stock           101,419 261,911 296,798    
Market value of vested restricted stock | $           $ 4,300,000 $ 8,500,000 $ 8,800,000    
Restricted stock units [Member] | Teekay Tankers [Member] | Class A [Member]                    
Class of Stock [Line Items]                    
Number of shares or units granted equity based compensation awards 192,387   586,014 411,629            
Restricted stock and phantom share units [Member] | Teekay Tankers, Teekay Offshore and Teekay LNG [Member]                    
Class of Stock [Line Items]                    
Vesting period         3 years          
Common units aggregate value, granted | $ $ 4,200,000   $ 5,700,000 $ 4,300,000            
Stock Option [Member]                    
Class of Stock [Line Items]                    
Common stock, shares reserved for issuance upon exercise of options or equity awards granted or to be granted           4,527,282 4,009,878      
Stock option, term           10 years        
Vesting period           3 years        
Stock options granted           265,135 15,243 72,810    
Unrecognized compensation cost related to non-vested stock options granted under the Plans | $           $ 400,000        
Expected recognition of compensation related to non-vested stock options granted under the Plans in 2015 | $           200,000        
Expected recognition of compensation related to non-vested stock options granted under the Plans in 2016 | $           200,000        
Compensation costs | $           1,700,000 $ 1,000,000 $ 1,800,000    
Intrinsic value of options exercised | $           500,000 22,600,000 $ 22,600,000    
Intrinsic value of outstanding in-the-money stock options | $           $ 0 39,000,000      
Intrinsic value of exercisable stock options | $             $ 35,000,000      
Weighted-average remaining life of options vested and expected to vest           3 years 4 months 24 days 3 years 7 months 6 days      
Weighted-average grant-date fair value of options granted | $ / shares           $ 7.74 $ 11.50 $ 10.54    
Expected volatility used in computing fair value of options granted           31.10% 34.70% 53.70%    
Expected life used in computing fair value of options granted, years           5 years 5 years 4 years    
Dividend yield used in computing fair value of options granted           4.40% 4.40% 4.80%    
Risk-free interest rate used in computing fair value of options granted           1.40% 1.60% 0.80%    
Estimated forfeiture rate used in computing fair value of options granted           8.00% 12.00% 12.00%    
Period of historical data used to calculate expected volatility in years           5 years        
Stock Option [Member] | Teekay Tankers [Member] | Non-management directors [Member]                    
Class of Stock [Line Items]                    
Stock options granted     152,346              
Stock option per share value | $ / shares     $ 4.10              
Stock option, term     10 years              
Stock Option [Member] | Teekay Tankers [Member] | Officer [Member]                    
Class of Stock [Line Items]                    
Vesting period 3 years 3 years                
Stock options granted 58,434 110,829                
Stock option per share value | $ / shares $ 5.39 $ 4.25                
Stock option, term 10 years 10 years                
Stock Option [Member] | Nonvested [Member]                    
Class of Stock [Line Items]                    
Weighted average grant date fair value of non-vested options forfeited | $           $ 0 $ 100,000 $ 100,000    
Performance shares [Member]                    
Class of Stock [Line Items]                    
Number of times performance units to vest, Minimum | Times           0        
Number of shares or units granted equity based compensation awards           61,774 50,689 54,773    
Fair value of granted stock | $           $ 3,400,000 $ 3,400,000 $ 2,300,000    
Performance shares [Member] | Minimum [Member]                    
Class of Stock [Line Items]                    
Vesting period           2 years        
Performance shares [Member] | Maximum [Member]                    
Class of Stock [Line Items]                    
Vesting period           3 years        
Restricted Stock Awards [Member]                    
Class of Stock [Line Items]                    
Compensation costs | $           $ 1,000,000 $ 1,000,000 $ 900,000    
Number of shares or units granted equity based compensation awards           22,502 18,230 26,412    
Restricted Stock Units and Performance Share Units [Member]                    
Class of Stock [Line Items]                    
Share based compensation expense | $           $ 4,500,000 $ 7,500,000 $ 9,900,000    
Stock granted           98,381 149,082 175,206    
Common Stock [Member]                    
Class of Stock [Line Items]                    
Repurchase of Common stock, shares           0 0      
Common stock, share outstanding           72,711,000 72,501,000 70,729,000 69,704,000  
Common Stock [Member] | Share Repurchase Program Two Thousand and Eight [Member]                    
Class of Stock [Line Items]                    
Common stock repurchase, amount authorized | $                   $ 200,000,000
Common Stock [Member] | Two Thousand Thirteen Repurchase Authorization [Member]                    
Class of Stock [Line Items]                    
Repurchase of Common stock, shares           5,200,000        
Common stock repurchase, amount authorized | $           $ 162,300,000        
Common stock repurchase, total remaining amount authorized | $           $ 37,700,000