The actual hull coverage ratio of the Company as at period end.

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The minimum liquidity required by covenants of certain debt currently held by the company. Liquidity is defined as cash, cash equivalents and undrawn committed revolving credit lines with at least six months to maturity.

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The minimum free liquidity and undrawn revolving credit line required by covenants of certain debt currently held by the Company, as a percentage of total debt.

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The minimum hull coverage ratio as required by certain covenants for debts held by the Company.

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Debt Covenant Minimum Hull Coverage Ratio, Thereafter

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Debt Covenant Minimum Hull Coverage Ratio, Year 1

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Debt Covenant Minimum Hull Coverage Ratio, Year 2

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Debt Covenant Minimum Hull Coverage Ratio, Years 1, 2 and 3

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Debt Covenant Minimum Hull Coverage Ratio, Years 3 and 4

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Lease Contract Hull Ratio Coverage Requirement Period

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Sale Leaseback Transaction, Term Of Contract

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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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The number of units (items of property) under capital lease arrangements.

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Amount of minimum lease payments for capital leases.

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Amount necessary to reduce net minimum lease payments to present value for capital leases.

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Present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes.

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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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Term of lessee's finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

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Amount of cash inflow before closing and debt issuance costs received by a seller-lessee in a sale-leaseback recognized in financing activities.

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Obligations Related to Capital Leases - Additional Information (Detail)	1 Months Ended			3 Months Ended	12 Months Ended
	Nov. 30, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jul. 31, 2017 USD ($)	Dec. 31, 2018 USD ($) vessel lease	Dec. 31, 2018 USD ($) vessel lease	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Nov. 01, 2018 vessel	Jul. 01, 2017 vessel
Capital Leased Assets [Line Items]
Proceeds from financing related to sale-leaseback of vessels \| $					$ 611,388,000	$ 809,935,000	$ 355,306,000
Teekay Tankers \| Aframax Tanker
Capital Leased Assets [Line Items]
Actual hull coverage ratio				91.00%	91.00%	0.00%
Minimum hull coverage ratio, year 1					75.00%
Minimum hull coverage ratio, year 2					78.00%
Minimum hull coverage ratio, years 3 and 4					80.00%
Minimum hull coverage ratio, thereafter					90.00%
LNG Carriers
Capital Leased Assets [Line Items]
Term of contract (in years)					10 years
Approximate capital leases future minimum payments due \| $				$ 1,700,000,000	$ 1,700,000,000
Imputed interest \| $				$ 435,300,000	$ 435,300,000
LNG Carriers \| Teekay LNG
Capital Leased Assets [Line Items]
Capital Leased Assets, Number of Units \| lease				8.000000	8.000000
Suezmax \| Teekay LNG
Capital Leased Assets [Line Items]
Capital Leased Assets, Number of Units \| lease				1	1
Capital Lease Obligations \| LR2 Tanker
Capital Leased Assets [Line Items]
Capital Leased Assets, Number of Units				1	1
Capital Lease Obligations \| Aframax Tanker
Capital Leased Assets [Line Items]
Capital Leased Assets, Number of Units				8	8
Capital Lease Obligations \| Suezmax
Capital Leased Assets [Line Items]
Capital Leased Assets, Number of Units				5	5
Imputed interest \| $				$ 182,000,000	$ 182,000,000
Future minimum payments due \| $				$ 581,300,000	$ 581,300,000
Capital Lease Obligations \| Teekay Tankers
Capital Leased Assets [Line Items]
Capital Leased Assets, Number of Units				4	4				14
Proceeds from financing related to sale-leaseback of vessels \| $			$ 153,000,000
Actual hull coverage ratio				122.00%	122.00%	0.00%
Minimum hull coverage ratio				100.00%
Restricted cash \| $				$ 4,300,000	$ 4,300,000	$ 2,700,000
Capital Lease Obligations \| Teekay Tankers \| Minimum
Capital Leased Assets [Line Items]
Lease term (in years)			9 years
Capital Lease Obligations \| Teekay Tankers \| Maximum
Capital Leased Assets [Line Items]
Lease term (in years)			12 years
Capital Lease Obligations \| Teekay Tankers \| Aframax Tanker
Capital Leased Assets [Line Items]
Capital Leased Assets, Number of Units				6	6
Proceeds from financing related to sale-leaseback of vessels \| $		$ 156,600,000
Capital Lease Obligations \| Teekay Tankers \| Suezmax
Capital Leased Assets [Line Items]
Capital Leased Assets, Number of Units				4	4				4
Minimum free liquidity and undrawn revolving credit line \| $				$ 35,000,000	$ 35,000,000
Percentage of debt				5.00%	5.00%
Actual hull coverage ratio				101.00%	101.00%	105.00%
Minimum hull coverage ratio, thereafter					100.00%
Hull coverage ratio for first three years					90.00%
Hull ratio coverage requirement period (in years)					3 years
Capital Lease Obligations \| Teekay Tankers \| Suezmax \| Minimum
Capital Leased Assets [Line Items]
Debt term (in years)					6 months
November 2018 Sale-leaseback Transaction \| Capital Lease Obligations \| Teekay Tankers
Capital Leased Assets [Line Items]
Capital Leased Assets, Number of Units								4
Proceeds from financing related to sale-leaseback of vessels \| $	$ 84,700,000
November 2018 Sale-leaseback Transaction \| Capital Lease Obligations \| Teekay Tankers \| 2 Aframax Tankers
Capital Leased Assets [Line Items]
Capital Leased Assets, Number of Units								2
November 2018 Sale-leaseback Transaction \| Capital Lease Obligations \| Teekay Tankers \| One Suezmax Tanker
Capital Leased Assets [Line Items]
Capital Leased Assets, Number of Units								1
November 2018 Sale-leaseback Transaction \| Capital Lease Obligations \| Teekay Tankers \| LR2 Tanker
Capital Leased Assets [Line Items]
Capital Leased Assets, Number of Units								1
LNG Carriers \| Teekay LNG
Capital Leased Assets [Line Items]
Capital Leased Assets, Number of Units				8	8