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Derivative Instruments and Hedging Activities - Additional Information (Detail) - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Derivative [Line Items] |  |
Derivative Asset, Fair Value, Gross Asset | $ 9.5 | $ 9.8
Derivative Liability, Fair Value, Gross Liability | 55.8 | 86.1
Restricted cash | $ 6.8 | 22.3
Teekay Offshore | Series D Warrant |  |
Derivative [Line Items] |  |
Number of shares available through exercise of stock purchase warrant | 1,755,000 |
Stock purchase warrants | $ 0.2 |
Teekay Offshore | Series D Warrant |  |
Derivative [Line Items] |  |
Stock purchase warrants |  | 1.3
Brookfield Transaction | Teekay Offshore | Stock Purchase Warrants |  |
Derivative [Line Items] |  |
Number of shares available through exercise of stock purchase warrant | 15,500,000 |
Stock purchase warrants | $ 11.8 | $ 29.4

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- Definition Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=82849420&loc=SL20226000-175313 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4D -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=82924980&loc=SL51823488-111719 + Details
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