Unaudited Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net loss	$ (124,743)	$ (86,304)	$ (113,768)	$ (125,504)
Other comprehensive income (loss) before reclassifications
Unrealized gain (loss) on marketable securities	16	(25)	700	10
Unrealized loss on qualifying cash flow hedging instruments	(2,795)	(12,547)	(3,585)	(38,193)
Pension adjustments, net of taxes	(57)	209	(112)	431
Foreign exchange gain (loss) on currency translation	19	(44)	411	87
Amounts reclassified from accumulated other comprehensive loss relating to:
Realized loss on qualifying cash flow hedging instruments to interest expense	706	0	762	0
Realized loss on qualifying cash flow hedging instruments to equity income	139	892	983	1,821
Other comprehensive loss	(1,972)	(11,515)	(841)	(35,844)
Comprehensive loss	(126,715)	(97,819)	(114,609)	(161,348)
Less: Comprehensive loss (income) attributable to non-controlling interests	46,069	16,947	(10,243)	23,914
Comprehensive loss attributable to shareholders of Teekay Corporation	$ (80,646)	$ (80,872)	$ (124,852)	$ (137,434)

Other Comprehensive Income (Loss) Before Reclassifications [Abstract]

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Other comprehensive income reclassifications to equity income [Abstract]

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Amount, after tax, before reclassification adjustment, of (increase) decrease in accumulated other comprehensive income of defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Amount after tax of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).

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Amount after tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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