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Lessor Leasing Arrangements, Capital Leases, Term of Contract

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Number Of Vessels

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The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

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The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership.

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Commitments and Contingencies - Additional Information - Legal Proceedings and Claims - Teekay Nakilat Capital Lease (Details) - Teekay LNG £ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017 USD ($) vessel agreement	Dec. 31, 2017 GBP (£) agreement	Dec. 31, 2016 USD ($)	Dec. 31, 2016 GBP (£)
Teekay Nakilat Corporation
Loss Contingencies [Line Items]
Share of potential exposure	70.00%
Number of vessels \| vessel	3
RasGas II LNG Carriers \| Foreign Tax Authority
Loss Contingencies [Line Items]
Estimated shares of lease rental increase claim	$ 50.0
Teekay Nakilat Corporation
Loss Contingencies [Line Items]
Number of lease agreements \| agreement	3	3
Lease term	30 years
Tax indemnification	$ 62.7	£ 46.4	$ 13.3	£ 10.8
Security Deposit \| Teekay Nakilat Corporation
Loss Contingencies [Line Items]
Restricted cash	$ 7.0		$ 6.8