Schedule I Condensed Non-Consolidated Financial Information of Registrant - Guarantees (Details) - Long-term Debt - Teekay Tankers - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Debt guaranteed	$ 166.4
Teekay Parent
Debt Instrument [Line Items]
Debt guaranteed	$ 166.4	$ 252.7

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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