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Capital Stock - Additional Information (Detail) | 1 Months Ended | 6 Months Ended | 12 Months Ended |  |
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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 |  |  |  |

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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iv) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average expected volatility rate of share-based compensation awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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