Long-Term Debt - Additional Information - Convertible Notes (Details) - Convertible Debt - Convertible Senior Notes (5%) due January 15, 2023	Jan. 31, 2018 USD ($)	Jan. 26, 2018 USD ($) $ / shares
Debt Instrument [Line Items]
Conversion rate		85.4701
Principal amount		$ 1,000
Conversion price (in dollars per share) \| $ / shares		$ 11.70
Premium on concurrent common stock offering price (as a percentage)		20.00%
Sale of stock (in dollars per share) \| $ / shares		$ 9.75
Teekay Parent
Debt Instrument [Line Items]
Debt instrument, principal amount		$ 125,000,000
Debt interest rate		5.00%
Conversion rate		85.4701
Principal amount		$ 1,000
Conversion price (in dollars per share) \| $ / shares		$ 11.70
Premium on concurrent common stock offering price (as a percentage)		20.00%
Sale of stock (in dollars per share) \| $ / shares		$ 9.75
Net proceeds of convertible debt	$ 104,600,000
Debt Instrument, Term	5 years
Remaining amount of net proceeds allocation to conversion feature		$ 16,100,000

The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion.

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The price per share of the conversion feature embedded in the debt instrument.

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Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

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The amount by which the convertible debt's if-converted value exceeds its principle amount at the balance sheet date, regardless of whether the instrument is currently convertible. This element applies to public companies only.

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Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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