Debt Covenant, Required Capital Invested

No definition available.

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Namespace Prefix:	tk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Short-term debt, Maximum borrowing limit

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

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.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(a))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(1))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(13))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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.

+ References

No definition available.

+ Details

Name:	us-gaap_ShortTermDebtLineItems
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Balance Type:	na
Period Type:	duration

- Definition

The portion of the carrying amount of short-term borrowings outstanding as of the balance sheet date, which accrues interest at a rate subject to change from time to time.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Weighted average interest rate of short-term debt outstanding calculated at point in time.

+ References

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

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- Details

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Data Type:	na
Balance Type:
Period Type:

- Details

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Data Type:	na
Balance Type:
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- Details

Name:	us-gaap_LineOfCreditFacilityAxis=tk_RSAMember
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- Details

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Short-Term Debt (Details) - USD ($)	1 Months Ended		9 Months Ended
Short-Term Debt (Details) - USD ($)	Jun. 30, 2019	Nov. 30, 2018	Sep. 30, 2019	Dec. 31, 2018
Short-term Debt [Line Items]
Short-term Debt			$ 50,000,000	$ 0
Teekay Tankers [Member]
Short-term Debt [Line Items]
Short term borrowing limit	$ 55,000,000	$ 40,000,000
Short-term Debt			$ 50,000,000	$ 0
Short-term Debt, Weighted Average Interest Rate, at Point in Time			5.50%	0.00%
Teekay Tankers [Member] \| Short-term Debt [Member]
Short-term Debt [Line Items]
Debt Instrument, Term			6 months
Teekay Tankers [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Short-term Debt [Line Items]
Short Term Debt, Interest Rate, Stated Percentage			3.50%
RSA [Member] \| Teekay Tankers [Member] \| Minimum [Member]
Short-term Debt [Line Items]
Capital			$ 20,000,000