Debt Instrument, Collateral, Number of Vessels

No definition available.

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- Definition

Line Of Credit Reduction Of Available Borrowing Capacity In Year Four

+ References

No definition available.

+ Details

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- Definition

Line Of Credit Reduction Of Available Borrowing Capacity In Year Three

+ References

No definition available.

+ Details

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- Definition

Line Of Credit Reduction Of Available Borrowing Capacity In Year Two

+ References

No definition available.

+ Details

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

- Definition

Line of credit reduction of available borrowing capacity next twelve months.

+ References

No definition available.

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

- Definition

Number Of Credit Facilities

+ References

No definition available.

+ Details

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- Definition

Number of common units issued of limited liability company (LLC).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- 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.

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Name:	us-gaap_DebtInstrumentLineItems
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Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Long-Term Debt - Additional Information - Revolvers (Detail) - Revolving Credit Facilities shares in Millions	12 Months Ended
	Dec. 31, 2018 USD ($) term_loan vessel shares	Dec. 31, 2017	Mar. 31, 2018 USD ($)
Debt Instrument [Line Items]
Number of credit facilities \| term_loan	5
Credit facility, maximum borrowing capacity	$ 900,000,000
Undrawn amount of revolving credit facility	300,000,000
Available capacity reduced under revolving credit facility in 2019	39,200,000
Available capacity reduced under revolving credit facility in 2020	378,400,000
Available capacity reduced under revolving credit facility in 2021	333,900,000
Available capacity reduced under revolving credit facility in 2022	$ 192,000,000
Number of vessels \| vessel	38
Secured debt
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity	$ 150,000,000
Teekay Offshore
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity			$ 100,000,000.0
Teekay Offshore \| Class A
Debt Instrument [Line Items]
Number of other securities collateralized by first-priority mortgages (in shares) \| shares	56.6
Teekay LNG \| Class A
Debt Instrument [Line Items]
Number of other securities collateralized by first-priority mortgages (in shares) \| shares	25.2
Teekay Tankers \| Class A
Debt Instrument [Line Items]
Number of other securities collateralized by first-priority mortgages (in shares) \| shares	40.3
Minimum
Debt Instrument [Line Items]
Debt instrument spread on variable rate	1.40%	0.45%
Maximum
Debt Instrument [Line Items]
Debt instrument spread on variable rate	3.95%	4.00%