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Capital Stock - Additional Information (Detail) $ / shares in Units, $ in Millions | 1 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2016 USD ($) $ / shares shares | Mar. 31, 2015 USD ($) $ / shares shares | Jun. 30, 2016 USD ($) Times $ / shares shares | Jun. 30, 2015 USD ($) $ / shares shares | Dec. 31, 2015 $ / shares shares
Class of Stock [Line Items] |  |  |  |  |
Preferred stock, share authorized |  |  | 25,000,000 |  | 25,000,000
Preferred stock, par value (usd per share) | $ / shares |  |  | $ 1 |  | $ 1
Common stock, share authorized |  |  | 725,000,000 |  | 725,000,000
Common stock, par value (usd per share) | $ / shares |  |  | $ 0.001 |  | $ 0.001
Preferred stock, share issued |  |  | 0 |  |
Number of common shares or units issued related to the exercise of share based compensation during the period |  |  | 100,000 |  |
Number of common stock issued |  |  | 12,000,000 |  |
Proceeds from issuance of common stock | $ |  |  | $ 96.2 |  |
Stock options granted |  |  | 916,015 | 265,135 |
Stock option per share value (usd per share) | $ / shares |  |  | $ 9.44 | $ 43.99 |
Restricted stock units [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Number of shares or units granted equity based compensation awards |  |  | 243,296 | 63,912 |
Fair value of granted stock | $ |  |  | $ 2.3 | $ 2.9 |
Vesting period |  |  | 3 years |  |
Value of each restricted stock unit and performance share unit in shares |  |  | Each restricted stock unit, restricted stock award and performance share is equal in value to one share of the Company’s common stock plus reinvested dividends from the grant date to the vesting date. |  |
Performance shares [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Number of shares or units granted equity based compensation awards |  |  | 311,691 | 61,774 |
Fair value of granted stock | $ |  |  | $ 3.6 | $ 3.4 |
Vesting period |  |  | 3 years |  |
Number of times performance units to vest, minimum | Times |  |  | 0 |  |
Restricted Stock Awards [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Number of shares or units granted equity based compensation awards |  |  | 67,000 | 22,502 |
Fair value of granted stock | $ |  |  | $ 0.6 | $ 1.0 |
Stock Option [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Stock option, term |  |  | 10 years |  |
Vesting period |  |  | 3 years |  |
Weighted-average grant-date fair value of options granted (usd per share) | $ / shares | $ 3.60 |  |  |  |
Expected volatility used in computing fair value of options granted | 55.10% |  |  |  |
Expected life used in computing fair value of options granted, years | 5 years 6 months |  |  |  |
Dividend yield used in computing fair value of options granted | 3.20% |  |  |  |
Risk-free interest rate used in computing fair value of options granted | 1.30% |  |  |  |
Estimated forfeiture rate used in computing fair value of options granted | 7.10% |  |  |  |
Period of historical data used to calculate expected volatility in years | 5 years |  |  |  |
Teekay Tankers, Teekay Offshore and Teekay LNG [Member] | Non-management directors [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Common units aggregate value, granted | $ |  |  | $ 0.7 | $ 1.0 |
Teekay Tankers, Teekay Offshore and Teekay LNG [Member] | Restricted stock and phantom share units [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Vesting period |  |  | 3 years |  |
Common units aggregate value, granted | $ | $ 4.8 | $ 4.2 |  |  |
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 |  |  | 76,084 | 14,603 |
Teekay Offshore [Member] | Phantom unit awards [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Number of shares or units granted equity based compensation awards | 599,479 | 102,834 |  |  |
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 |  |  | 32,723 | 10,447 |
Teekay LNG [Member] | Phantom unit awards [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Number of shares or units granted equity based compensation awards | 131,062 | 32,054 |  |  |
Teekay Tankers [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Number of common stock issued |  |  |  |  | 7,200,000
Teekay Tankers [Member] | Non-management directors [Member] | Class A common stock [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Number of common shares or units issued related to the exercise of share based compensation during the period |  |  | 9,358 | 51,948 |
Teekay Tankers [Member] | Officer [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Stock options granted | 216,043 | 58,434 |  |  |
Stock option per share value (usd per share) | $ / shares | $ 3.74 | $ 5.39 |  |  |
Teekay Tankers [Member] | Restricted stock units [Member] | Class A common stock [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Number of shares or units granted equity based compensation awards | 275,848 | 192,387 |  |  |
Teekay Tankers [Member] | Equity Option [Member] | Officer [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Stock option, term | 10 years | 10 years |  |  |
Vesting period | 3 years | 3 years |  |  |

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