Seapeak (SEAL-PA) 6-K 26 Aug 20 2020 Q2 Current report (foreign) Financial data

Document and Entity Information

Document and Entity Information	6 Months Ended
	Jun. 30, 2020
Document And Entity Information [Abstract]
Document Type	6-K
Amendment Flag	false
Document Period End Date	Jun. 30, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Entity Registrant Name	Teekay LNG Partners L.P.
Entity Central Index Key	0001308106
Current Fiscal Year End Date	--12-31

Unaudited Consolidated Statemen

Unaudited Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Statement [Abstract]
Voyage revenues (notes 6 and 10a)	$ 148,205	$ 153,060	$ 288,092	$ 302,804
Voyage expenses	(5,329)	(6,023)	(7,646)	(11,798)
Vessel operating expenses	(28,407)	(27,457)	(54,511)	(53,558)
Time-charter hire expenses	(5,368)	(3,080)	(11,290)	(8,671)
Depreciation and amortization	(31,629)	(35,338)	(64,268)	(69,464)
General and administrative expenses	(7,883)	(5,667)	(14,050)	(12,299)
Write-down of vessels (note 15)	0	0	(45,000)	0
Restructuring charges (note 14)	0	(818)	0	(2,976)
Income (loss) from vessel operations	69,589	74,677	91,327	144,038
Equity income (notes 7 and 10a)	32,155	1,738	32,528	7,316
Interest expense	(35,143)	(41,018)	(71,847)	(83,235)
Interest income (note 7)	1,697	960	4,067	2,038
Realized and unrealized loss on non-designated derivative instruments (note 11)	(8,516)	(7,826)	(28,987)	(14,443)
Foreign currency exchange loss (notes 8 and 11)	(11,624)	(7,243)	(6,885)	(7,974)
Other expense (note 3b)	(679)	(487)	(1,040)	(236)
Net income before income tax expense	47,479	20,801	19,163	47,504
Income tax recovery (expense) (note 9)	1,804	(1,749)	(708)	(4,327)
Net income	49,283	19,052	18,455	43,177
Non-controlling interest in net income	4,349	2,617	6,515	5,125
Preferred unitholders' interest in net income	6,425	6,425	12,850	12,850
General partner's interest in net income (loss)	713	200	(76)	504
Limited partners’ interest in net income (loss)	$ 37,796	$ 9,810	$ (834)	$ 24,698
Limited partners’ interest in net income (loss) per common unit (note 13):
Basic (usd per unit)	$ 0.46	$ 0.12	$ (0.01)	$ 0.31
Diluted (usd per unit)	$ 0.46	$ 0.12	$ (0.01)	$ 0.31
Weighted-average number of common units outstanding (note 13):
Basic (units)	82,197,665	78,603,636	79,629,623	78,600,342
Diluted (units)	82,262,235	78,685,537	79,629,623	78,682,263

Unaudited Consolidated Statem_2

Unaudited Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net income	$ 49,283	$ 19,052	$ 18,455	$ 43,177
Other comprehensive loss before reclassifications
Unrealized loss on qualifying cash flow hedging instruments, net of tax	(11,081)	(30,749)	(68,634)	(52,238)
Amounts reclassified from accumulated other comprehensive loss, net of tax
Other comprehensive loss	(8,172)	(31,103)	(62,069)	(53,343)
Comprehensive income (loss)	41,111	(12,051)	(43,614)	(10,166)
Non-controlling interest in comprehensive income (loss)	4,033	1,242	3,447	2,900
Preferred unitholders' interest in comprehensive income (loss)	6,425	6,425	12,850	12,850
General and Limited partners' interest in comprehensive income (loss)	30,653	(19,718)	(59,911)	(25,916)
Equity income
Amounts reclassified from accumulated other comprehensive loss, net of tax
Realized loss (gain) on qualifying cash flow hedging instruments		(197)		(697)
Realized loss (gain) on qualifying cash flow hedging instruments	2,427		5,931
Interest expense
Other comprehensive loss before reclassifications
Unrealized loss on qualifying cash flow hedging instruments, net of tax	(1,055)		(10,226)
Amounts reclassified from accumulated other comprehensive loss, net of tax
Realized loss (gain) on qualifying cash flow hedging instruments (note 11)		$ (157)		$ (408)
Realized loss (gain) on qualifying cash flow hedging instruments	$ 482		$ 634

Unaudited Consolidated Balance

Unaudited Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	May 11, 2020	Dec. 31, 2019
Current
Cash and cash equivalents	$ 226,328		$ 160,221
Restricted cash – current (note 16a)	11,544		53,689
Accounts receivable, including non-trade of $6,844 (2019 – $10,688)	9,694		13,460
Prepaid expenses	10,891		6,796
Current portion of derivative assets (note 11)	0		355
Current portion of net investments in direct financing and sales-type leases, net (notes 3b and 6)	14,014		273,986
Advances to affiliates (note 10b)	3,025		5,143
Other current assets	237		238
Total current assets	275,733		513,888
Restricted cash – long-term (note 16a)	54,603		39,381
Vessels and equipment
At cost, less accumulated depreciation of $711,352 (2019 – $711,758)	1,256,434		1,335,397
Vessels related to finance leases, at cost, less accumulated depreciation of $133,557 (2019 – $109,853) (note 5a)	1,675,168		1,691,945
Operating lease right-of-use asset (note 5b)	27,568		34,157
Total vessels and equipment	2,959,170		3,061,499
Investments in and advances, net to equity-accounted joint ventures (notes 3b and 7)	1,082,346		1,155,316
Net investments in direct financing and sales-type leases, net (notes 3b and 6)	525,812		544,823
Other assets	17,633		14,738
Derivative assets (note 11)	0		1,834
Intangible assets – net	38,938		43,366
Goodwill	34,841		34,841
Total assets	4,989,076		5,409,686
Current
Accounts payable	4,270		5,094
Accrued liabilities (notes 11 and 14)	79,832		76,752
Unearned revenue (note 6)	30,185		28,759
Current portion of long-term debt (note 8)	295,282		393,065
Current obligations related to finance leases (note 5a)	70,955		69,982
Current portion of operating lease liabilities (note 5b)	13,681		13,407
Current portion of derivative liabilities (note 11)	34,997		38,458
Advances from affiliates (note 10b)	18,271		7,003
Total current liabilities	547,473		632,520
Long-term debt (note 8)	1,263,202		1,438,331
Long-term obligations related to finance leases (note 5a)	1,305,056		1,340,922
Long-term operating lease liabilities (note 5b)	13,887		20,750
Derivative liabilities (note 11)	88,336		51,006
Other long-term liabilities (note 12b)	52,635		49,182
Total liabilities	3,270,589		3,532,711
Commitments and contingencies (notes 5, 8, 11 and 12)
Equity
Limited partners - common units (Unlimited units authorized; 86.9 million units and 77.5 million units issued and outstanding at June 30, 2020 and December 31, 2019, respectively)	1,447,690	$ 2,300	1,543,598
Limited partners - preferred units (11.9 million units authorized; 11.8 million units issued and outstanding at June 30, 2020 and December 31, 2019)	285,159		285,159
General partner	45,868	$ (2,300)	50,241
Accumulated other comprehensive loss	(116,313)		(57,312)
Partners' equity	1,662,404		1,821,686
Non-controlling interest	56,083		55,289
Total equity	1,718,487		1,876,975
Total liabilities and total equity	$ 4,989,076		$ 5,409,686

Unaudited Consolidated Balanc_2

Unaudited Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands, shares in Millions	Jun. 30, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Accounts receivable, non-trade	$ 6,844	$ 10,688
Accumulated depreciation on vessel and equipment	711,352	711,758
Accumulated Depreciation on Finance Leases	$ 133,557	$ 109,853
Limited Partners - common units issued (in shares)	86.9	77.5
Limited Partners - common units outstanding (in shares)	86.9	77.5
Preferred Units, Authorized	11.9	11.9
Limited Partners - preferred units issued (in shares)	11.8	11.8
Limited Partners - preferred units outstanding (in shares)	11.8	11.8

Unaudited Consolidated Statem_3

Unaudited Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
OPERATING ACTIVITIES
Net income	$ 18,455	$ 43,177
Non-cash and non-operating items:
Unrealized loss on non-designated derivative instruments (note 11)	22,173	9,666
Depreciation and amortization	64,268	69,464
Write-down of vessels (note 15)	45,000	0
Unrealized foreign currency exchange loss including the effect of the settlement of cross currency swaps (note 11)	3,660	4,727
Equity income, net of dividends received $14,852 (2019 – $17,274)	(17,676)	9,958
Amortization of deferred financing issuance costs included in interest expense	3,001	5,170
Other Non-cash items	1,823	3,828
Receipts from direct financing and sales-type leases	267,463	6,050
Expenditures for dry docking	(1,927)	(6,335)
Other non-cash operating assets and liabilities	17,621	(28,827)
Net operating cash flow	423,861	116,878
FINANCING ACTIVITIES
Proceeds from issuance of long-term debt	446,650	126,263
Scheduled repayments of long-term debt and settlement of related swaps (note 11)	(194,831)	(66,310)
Prepayments of long-term debt	(525,021)	(168,787)
Financing issuance costs	(2,601)	(989)
Proceeds from financing related to sales and leaseback of vessels	0	158,680
Scheduled repayments of obligations related to finance leases	(34,893)	(33,855)
Repurchase of common units (note 13)	(15,635)	(12,056)
Cash distributions paid	(47,295)	(39,315)
Acquisition of non-controlling interest in certain of the Partnership's subsidiaries (note 10d)	(2,219)	0
Dividends paid to non-controlling interest	0	(55)
Net financing cash flow	(375,845)	(36,424)
INVESTING ACTIVITIES
Expenditures for vessels and equipment	(8,832)	(82,575)
Capital contributions and advances to equity-accounted joint ventures	0	(15,555)
Net investing cash flow	(8,832)	(98,130)
Increase (decrease) in cash, cash equivalents and restricted cash	39,184	(17,676)
Cash, cash equivalents and restricted cash, beginning of the period	253,291	222,864
Cash, cash equivalents and restricted cash, end of the period	$ 292,475	$ 205,188

Unaudited Consolidated Statem_4

Unaudited Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Statement of Cash Flows [Abstract]
Equity income, net of dividends received $14,852 (2019 - $17,274)	$ 14,852	$ 17,274

Unaudited Consolidated Statem_5

Unaudited Consolidated Statement of Changes in Total Equity - USD ($) shares in Thousands, $ in Thousands	Total	General Partner	Common UnitsLimited Partners	Preferred UnitsLimited Partners	Accumulated Other Comprehensive Income (Loss)	Non- controlling Interest	Preferred units Series A ($0.5625 per unit)	Preferred units Series A ($0.5625 per unit)Preferred UnitsLimited Partners	Preferred units Series B ($0.5313 per unit)	Preferred units Series B ($0.5313 per unit)Preferred UnitsLimited Partners
Beginning balance, units at Dec. 31, 2018			79,361	11,800
Beginning balance at Dec. 31, 2018	$ 1,882,597	$ 49,271	$ 1,496,107	$ 285,159	$ 2,717	$ 49,343
Increase (Decrease) in Partners' Capital [Roll Forward]
Net (loss) income	24,125	304	14,888	$ 6,425		2,508
Other comprehensive loss	(22,240)				(21,390)	(850)
Common units	(11,221)	(224)	$ (10,997)
Preferred units							$ (2,812)	$ (2,812)	$ (3,613)	$ (3,613)
Dividends paid to non-controlling interest	(20)					(20)
Equity-based compensation, units			81
Equity-based compensation	827	17	$ 810
Repurchase of common units (note 13), units			(815)
Repurchase of common units (note 13)	(9,497)	(190)	$ (9,307)
Ending balance, units at Mar. 31, 2019			78,627	11,800
Ending balance at Mar. 31, 2019	1,855,129	49,215	$ 1,493,278	$ 285,159	(23,504)	50,981
Beginning balance, units at Dec. 31, 2018			79,361	11,800
Beginning balance at Dec. 31, 2018	1,882,597	49,271	$ 1,496,107	$ 285,159	2,717	49,343
Increase (Decrease) in Partners' Capital [Roll Forward]
Net (loss) income	43,177
Other comprehensive loss	(53,343)
Preferred units				$ (12,900)
Ending balance, units at Jun. 30, 2019			78,441	11,800
Ending balance at Jun. 30, 2019	1,818,687	49,056	$ 1,485,516	$ 285,159	(53,232)	52,188
Beginning balance, units at Mar. 31, 2019			78,627	11,800
Beginning balance at Mar. 31, 2019	1,855,129	49,215	$ 1,493,278	$ 285,159	(23,504)	50,981
Increase (Decrease) in Partners' Capital [Roll Forward]
Net (loss) income	19,052	200	9,810	6,425		2,617
Other comprehensive loss	(31,103)				(29,728)	(1,375)
Common units	(15,244)	(305)	$ (14,939)
Preferred units				$ (6,400)			(2,812)	(2,812)	(3,613)	(3,613)
Dividends paid to non-controlling interest	(35)					35
Equity-based compensation, units			1
Equity-based compensation	(128)	(3)	$ (125)
Repurchase of common units (note 13), units			(187)
Repurchase of common units (note 13)	(2,559)	(51)	$ (2,508)
Ending balance, units at Jun. 30, 2019			78,441	11,800
Ending balance at Jun. 30, 2019	1,818,687	49,056	$ 1,485,516	$ 285,159	(53,232)	52,188
Beginning balance, units at Dec. 31, 2019			77,510	11,800
Beginning balance at Dec. 31, 2019	1,876,975	50,241	$ 1,543,598	$ 285,159	(57,312)	55,289
Increase (Decrease) in Partners' Capital [Roll Forward]
Net (loss) income	(30,828)	(789)	(38,630)	$ 6,425		2,166
Other comprehensive loss	(53,897)				(51,145)	(2,752)
Common units	(15,013)	(300)	$ (14,713)
Preferred units							(2,812)	(2,812)	(3,613)	(3,613)
Equity-based compensation, units			35
Equity-based compensation	212	4	$ 208
Other (note 10d)	(462)	(12)	$ (629)			(179)
Repurchase of common units (note 13), units			(1,373)
Repurchase of common units (note 13)	(15,635)	(313)	$ (15,322)
Ending balance, units at Mar. 31, 2020			76,172	11,800
Ending balance at Mar. 31, 2020	1,702,551	47,839	$ 1,425,960	$ 285,159	(108,457)	52,050
Beginning balance, units at Dec. 31, 2019			77,510	11,800
Beginning balance at Dec. 31, 2019	1,876,975	50,241	$ 1,543,598	$ 285,159	(57,312)	55,289
Increase (Decrease) in Partners' Capital [Roll Forward]
Net (loss) income	18,455
Other comprehensive loss	(62,069)
Preferred units				$ (12,900)
Ending balance, units at Jun. 30, 2020			86,928	11,800
Ending balance at Jun. 30, 2020	1,718,487	45,868	$ 1,447,690	$ 285,159	(116,313)	56,083
Beginning balance, units at Mar. 31, 2020			76,172	11,800
Beginning balance at Mar. 31, 2020	1,702,551	47,839	$ 1,425,960	$ 285,159	(108,457)	52,050
Increase (Decrease) in Partners' Capital [Roll Forward]
Net (loss) income	49,283	713	37,796	6,425		4,349
Other comprehensive loss	(8,172)				(7,856)	(316)
Common units	(19,432)	(389)	$ (19,043)
Preferred units				$ (6,400)			$ (2,812)	$ (2,812)	$ (3,613)	$ (3,613)
Equity-based compensation, units			6
Equity-based compensation	$ 682	13	$ 669
Issuance of common units (notes 10e and 13), units	10,750
Issuance of common units (notes 10e and 13)		(2,308)	$ 2,308
Ending balance, units at Jun. 30, 2020			86,928	11,800
Ending balance at Jun. 30, 2020	$ 1,718,487	$ 45,868	$ 1,447,690	$ 285,159	$ (116,313)	$ 56,083

Unaudited Consolidated Statem_6

Unaudited Consolidated Statement of Changes in Total Equity (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019
Equity based compensation, net of withholding tax	$ 0.4		$ 0.5
Common Stock, Dividends, Per Share, Declared	$ 250,000	$ 190,000	$ 190,000	$ 140,000
Preferred units Series A ($0.5625 per unit)
Preferred Stock, Dividends Per Share, Declared	562,500	562,500	562,500	562,500
Preferred units Series B ($0.5313 per unit)
Preferred Stock, Dividends Per Share, Declared	$ 531,300	$ 531,300	$ 531,300	$ 531,300

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2020
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The unaudited interim consolidated financial statements have been prepared in accordance with United States generally accepted accounting principles (or GAAP ). These unaudited consolidated financial statements include the accounts of Teekay LNG Partners L.P. (or the Partnership ), which is a limited partnership formed under the laws of the Republic of the Marshall Islands, its wholly-owned and controlled subsidiaries and any variable interest entities (or VIEs ) of which it is the primary beneficiary. Certain information and footnote disclosures required by GAAP for complete annual financial statements have been omitted and, therefore, these unaudited interim consolidated financial statements should be read in conjunction with the Partnership’s audited consolidated financial statements for the year ended December 31, 2019 , which are included in the Partnership’s Annual Report on Form 20-F for the year ended December 31, 2019 filed with the U.S. Securities and Exchange Commission (or SEC ) on April 9, 2020. In the opinion of management of Teekay GP L.L.C., the general partner of the Partnership (or the General Partner ), these unaudited interim consolidated financial statements reflect all adjustments consisting solely of a normal recurring nature, necessary to present fairly, in all material respects, the Partnership’s consolidated financial position, results of operations, changes in total equity and cash flows for the interim periods presented. The results of operations for the interim periods presented are not necessarily indicative of those for a full fiscal year. Significant intercompany balances and transactions have been eliminated upon consolidation. Certain comparative figures have been reclassified to conform to the presentation adopted in the current period relating to certain expenses reclassified from income tax recovery (expense) to other expense which resulted in an increase in other expense of $0.7 million , and an offsetting decrease in income tax recovery (expense) for the three and six months ended June 30, 2019, respectively. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. It is possible that the amounts recorded as derivative liabilities could vary by material amounts prior to their settlement. In March 2020, the World Health Organization declared the outbreak of a novel coronavirus (or COVID-19 ) as a pandemic. Given the dynamic nature of these circumstances, the full extent to which the COVID-19 pandemic may have direct or indirect impact on the Partnership's business and the related financial reporting implications cannot be reasonably estimated at this time, though could materially affect the Partnership's business, results of operations and financial condition in the future. At this time, the Partnership has not yet experienced any material negative impacts to its business, results of operations, or financial position as a result of COVID-19, other than it being a contributing factor to the write-down of six of the Partnership's multi-gas vessels during the six months ended June 30, 2020 as described in Note 15.

Accounting Pronouncements

Accounting Pronouncements	6 Months Ended
	Jun. 30, 2020
Accounting Changes and Error Corrections [Abstract]
Accounting Pronouncements	Accounting Pronouncements In June 2016, the Financial Accounting Standards Board (or FASB ) issued Accounting Standards Update (or ASU ) 2016-13, Financial Instruments - Credit Losses: Measurement of Credit Losses on Financial Instruments (or ASU 2016-13 ). ASU 2016-13 introduced a new credit loss methodology, which requires earlier recognition of potential credit losses, while also providing additional transparency about credit risk. This new credit loss methodology utilizes a lifetime “expected credit loss” measurement objective for the recognition of credit losses for loans, held-to-maturity debt securities and other receivables at the time the financial asset is originated or acquired. The expected credit losses are subsequently adjusted each period for changes in expected lifetime credit losses. This methodology replaced multiple existing impairment methods under previous GAAP for these types of assets, which generally required that a loss be incurred before it was recognized. The Partnership adopted this update on January 1, 2020 with a modified-retrospective approach, whereby a cumulative-effect adjustment was made to reduce partner's equity on January 1, 2020 without any retroactive application to prior periods. The Partnership's net investments in direct financing and sales-type leases, advances to equity-accounted joint ventures, guarantees of indebtedness of equity-accounted joint ventures and receivables related to non-operating lease revenue arrangements are subject to ASU 2016-13. On adoption, the Partnership decreased the carrying value of partners' equity by $50.8 million , investments in and advances to equity-accounted joint ventures by $40.0 million , net investments in direct financing and sales-type leases by $11.2 million and non-controlling interest by $2.5 million , and increased its other long-term liabilities by $2.1 million . The cumulative adjustment recorded on initial adoption of this update does not reflect an increase in credit risk exposure to the Partnership compared to previous periods presented. In December 2019, the FASB issued ASU 2019-12 - Income Taxes (Topic 740) Simplifying the Accounting for Income Taxes (or ASU 2019-12 ), as part of its initiative to reduce complexity in the accounting standards. The amendments in ASU 2019-12 eliminate certain exceptions related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences, among other changes. The guidance becomes effective for annual reporting periods beginning after December 15, 2020 and interim periods within those fiscal years with early adoption permitted, including adoption in any interim period. The Partnership is currently evaluating the effect of adopting this new guidance. In March 2020, the FASB issued ASU 2020-04 - Reference Rate Reform (Topic 848) Facilitation of the Effects of Reference Rate Reform on Financial Reporting (or ASU 2020-04 ). This ASU provides optional guidance for a limited period of time to ease potential accounting impacts associated with transitioning away from reference rates that are expected to be discontinued, such as the London Interbank Offered Rate (or "LIBOR" ). This ASU applies only to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued. This ASU is effective through December 31, 2022. The Partnership is currently evaluating the effect of adopting this new guidance.
New Accounting Pronouncements, Policy [Policy Text Block]	Accounting Pronouncements In June 2016, the Financial Accounting Standards Board (or FASB ) issued Accounting Standards Update (or ASU ) 2016-13, Financial Instruments - Credit Losses: Measurement of Credit Losses on Financial Instruments (or ASU 2016-13 ). ASU 2016-13 introduced a new credit loss methodology, which requires earlier recognition of potential credit losses, while also providing additional transparency about credit risk. This new credit loss methodology utilizes a lifetime “expected credit loss” measurement objective for the recognition of credit losses for loans, held-to-maturity debt securities and other receivables at the time the financial asset is originated or acquired. The expected credit losses are subsequently adjusted each period for changes in expected lifetime credit losses. This methodology replaced multiple existing impairment methods under previous GAAP for these types of assets, which generally required that a loss be incurred before it was recognized. The Partnership adopted this update on January 1, 2020 with a modified-retrospective approach, whereby a cumulative-effect adjustment was made to reduce partner's equity on January 1, 2020 without any retroactive application to prior periods. The Partnership's net investments in direct financing and sales-type leases, advances to equity-accounted joint ventures, guarantees of indebtedness of equity-accounted joint ventures and receivables related to non-operating lease revenue arrangements are subject to ASU 2016-13. On adoption, the Partnership decreased the carrying value of partners' equity by $50.8 million , investments in and advances to equity-accounted joint ventures by $40.0 million , net investments in direct financing and sales-type leases by $11.2 million and non-controlling interest by $2.5 million , and increased its other long-term liabilities by $2.1 million . The cumulative adjustment recorded on initial adoption of this update does not reflect an increase in credit risk exposure to the Partnership compared to previous periods presented. In December 2019, the FASB issued ASU 2019-12 - Income Taxes (Topic 740) Simplifying the Accounting for Income Taxes (or ASU 2019-12 ), as part of its initiative to reduce complexity in the accounting standards. The amendments in ASU 2019-12 eliminate certain exceptions related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences, among other changes. The guidance becomes effective for annual reporting periods beginning after December 15, 2020 and interim periods within those fiscal years with early adoption permitted, including adoption in any interim period. The Partnership is currently evaluating the effect of adopting this new guidance. In March 2020, the FASB issued ASU 2020-04 - Reference Rate Reform (Topic 848) Facilitation of the Effects of Reference Rate Reform on Financial Reporting (or ASU 2020-04 ). This ASU provides optional guidance for a limited period of time to ease potential accounting impacts associated with transitioning away from reference rates that are expected to be discontinued, such as the London Interbank Offered Rate (or "LIBOR" ). This ASU applies only to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued. This ASU is effective through December 31, 2022. The Partnership is currently evaluating the effect of adopting this new guidance.

Financial Instruments

Financial Instruments	6 Months Ended
	Jun. 30, 2020
Fair Value Disclosures [Abstract]
Financial Instruments	Financial Instruments a) Fair Value Measurements For a description of how the Partnership estimates fair value and for a description of the fair value hierarchy levels, see Item 18 – Financial Statements: Note 3 to the Partnership’s audited consolidated financial statements filed with its Annual Report on Form 20-F for the year ended December 31, 2019 . The following table includes the estimated fair value and carrying value of those assets and liabilities that are measured at fair value on a recurring and non-recurring basis, as well as the estimated fair value of the Partnership’s financial instruments that are not accounted for at fair value on a recurring basis. June 30, 2020 December 31, 2019 Fair Value Hierarchy Level Carrying Amount Asset (Liability) $ Fair Value Asset (Liability) $ Carrying Amount Asset (Liability) $ Fair Value Asset (Liability) $ Recurring: Cash and cash equivalents and restricted cash (note 16a) Level 1 292,475 292,475 253,291 253,291 Derivative instruments (note 11) Interest rate swap agreements – assets Level 2 — — 2,210 2,210 Interest rate swap agreements – liabilities Level 2 (81,488 ) (81,488 ) (50,447 ) (50,447 ) Foreign currency contracts Level 2 — — (202 ) (202 ) Cross currency swap agreements – liabilities Level 2 (46,179 ) (46,179 ) (42,104 ) (42,104 ) Other: Loans to equity-accounted joint ventures (note 7) (i) 125,641 (i) 126,546 (i) Long-term debt – public (note 8) Level 1 (212,088 ) (212,749 ) (345,824 ) (358,005 ) Long-term debt – non-public (note 8) Level 2 (1,346,396 ) (1,348,032 ) (1,485,572 ) (1,474,208 ) Obligations related to finance leases (note 5a) Level 2 (1,376,011 ) (1,475,031 ) (1,410,904 ) (1,434,910 ) (i) The advances to equity-accounted joint ventures together with the Partnership’s equity investments in the joint ventures form the net aggregate carrying value of the Partnership’s interests in the joint ventures in these unaudited consolidated financial statements. The fair values of the individual components of such aggregate interests are not determinable. b) Credit Losses The Partnership's exposure to potential credit losses primarily includes its three direct financing leases, its two loans to equity-accounted joint ventures and its guarantees of its proportionate share of secured loan facilities and finance leases of five of its equity-accounted joint ventures. In addition, the Partnership's exposure to potential credit losses includes direct financing and sales-types leases for 18 LNG carriers, one floating storage unit (or FSU ) and an LNG regasification terminal within five of its equity-accounted joint ventures, consisting of the Yamal LNG Joint Venture, the Bahrain LNG Joint Venture, the Pan Union Joint Venture, the RasGas III Joint Venture and the Angola Joint Venture. See Item 18 – Financial Statements: Note 7a to the Partnership’s audited consolidated financial statements filed with its Annual Report on Form 20-F for the year ended December 31, 2019 for a description of these equity-accounted joint ventures. The following table includes the amortized cost basis of the Partnership’s direct interests in financing receivables and net investment in direct financing leases by class of financing receivables and by period of origination and their associated credit quality. Amortized Cost Basis by Origination Year Credit Quality Grade (1) 2018 2016 Prior to 2016 Total As at June 30, 2020 $ $ $ $ Direct financing leases Tangguh Hiri and Tangguh Sago Performing — — 338,305 338,305 Bahrain Spirit Performing 213,041 — — 213,041 213,041 — 338,305 551,346 Loans to equity-accounted joint ventures Exmar LPG Joint Venture Performing — — 52,266 52,266 Bahrain LNG Joint Venture Performing — 73,375 — 73,375 — 73,375 52,266 125,641 213,041 73,375 390,571 676,987 (1) The Partnership's credit quality grades are based on internal risk credit ratings whereby a credit quality grade of performing is consistent with a low likelihood of loss. The Partnership assesses the credit quality of its direct financing leases and loan to the Exmar LPG Joint Venture on whether there are no past due payments (30 days late), no concessions granted to the counterparties and whether the Partnership is aware of any other information that would indicate that there is a material increase of likelihood of loss. The same policy is applied by the equity-accounted joint ventures. As at June 30, 2020, all direct financing and sales-type leases held by the Partnership’s equity-accounted joint ventures had a credit quality grade of performing. The Partnership assesses the credit quality of its loan to the Bahrain LNG Joint Venture based on whether there are any past due payments from the Bahrain LNG Joint Venture’s primary customer, whether the Bahrain LNG Joint Venture has granted any concessions to its primary customer and whether the Partnership is aware of any other information that would indicate that there is a material increase of likelihood of loss. Changes in the Partnership's allowance for credit losses for the three and six months ended June 30, 2020 are as follows: Direct financing leases (1) $ Direct financing and sales-type leases and other within equity-accounted joint ventures (1) $ Loans to equity-accounted joint ventures (2) $ Guarantees of debt (3) $ Total $ As at January 1, 2020 11,155 36,292 3,714 2,139 53,300 Provision for expected credit losses (100 ) 8,980 — — 8,880 As at March 31, 2020 11,055 45,272 3,714 2,139 62,180 Provision for expected credit losses 465 (423 ) 83 (288 ) (163 ) As at June 30, 2020 11,520 44,849 3,797 1,851 62,017 (1) The credit loss provision related to the lease receivable component of the net investment in direct financing and sales-type leases is based on an internal historical loss rate, as adjusted when asset specific risk characteristics of the existing lease receivables at the reporting date are not consistent with those used to measure the internal historical loss rate and as further adjusted when management expects current conditions and reasonable and supportable forecasts to differ from the conditions that existed to measure the internal historical loss rate. During the six months ended June 30, 2020 , two LNG project counterparties maintained investment grade credit ratings. As such, the internal historical loss rate used to determine the credit loss provision at both January 1, 2020 and June 30, 2020 was adjusted downwards to reflect a lower risk profile for these two LNG projects at such dates compared to the average LNG project used to determine the internal historical loss rate. In addition, the internal historical loss rate was adjusted upwards for one LNG project to reflect a lower credit rating for the counterparty, including consideration of the critical infrastructure nature of assets, and a second LNG project to reflect a larger risk of loss given default as the vessels servicing this project have fewer opportunities for redeployment compared to the Partnership’s other LNG carriers. The credit loss provision for the residual value component is based on a reversion methodology whereby the current estimated fair value of the vessel as depreciated to the end of the charter contract as compared to the expected carrying value, with such potential gain or loss on maturity being included in the credit loss provision in increasing magnitude on a straight-line basis the closer the contract is to its maturity. Risks related to the net investments in direct financing and sales-type leases consist of risks related to the underlying LNG projects and demand for LNG carriers at the end of the contracts. The provision for expected credit loss as at January 1, 2020 and June 30, 2020 has been developed in part based on the Partnership's understanding that LNG production is critical infrastructure. In addition, the provision for expected credit loss as at June 30, 2020, within the Partnership's equity-accounted joint ventures reflects the commencement of the sales-type lease for the Bahrain regasification terminal and associated FSU in January 2020. The change in credit loss provision of $(0.4) million and $8.6 million for the three and six months ended June 30, 2020, respectively, relating to the direct financing and sales-type leases and other within the Partnership's equity-accounted joint ventures are included in equity income. The change in credit loss provision recorded for the Partnership's direct financing and sales-type leases, loans to equity-accounted joint ventures and guarantees of debt of $0.3 million and $0.2 million for the three and six months ended June 30, 2020, respectively, are included in other expense. (2) The determination of the credit loss provision for such loans is based an internal historical loss rate of the Partnership and its affiliates, as adjusted when asset specific risk characteristics of the existing loans at the reporting date are not consistent with those used to measure the internal historical loss rate and as further adjusted when management expects current conditions and reasonable and supportable forecasts to differ from the conditions that existed to measure the internal historical loss rate. These two loans rank behind secured debt in each equity-accounted joint venture. As such, they are similar to equity in terms of risk. The Exmar LPG Joint Venture owns and charters-in LPG carriers with a primary focus on mid-size gas carriers. Their vessels are trading on the spot market or short-term charters. Adverse changes in the spot market for mid-size LPG carriers, as well as operating costs for such vessels, may impact the ability of the Exmar LPG Joint Venture to repay its loan to the Partnership. The Bahrain LNG Joint Venture owns an LNG receiving and regasification terminal in Bahrain. The ability of Bahrain LNG Joint Venture to repay its loan to the Partnership is primarily dependent upon the Bahrain LNG Joint Venture’s customer, a company owned by the Kingdom of Bahrain, fulfilling its obligations under the 20 -year agreement, as well as Bahrain LNG Joint Venture’s ability to operate the terminal in accordance with the agreed upon operating criteria. (3) The determination of the credit loss provision for such guarantees was based on a probability of default and loss given default methodology. In determining the overall estimated loss from default as a percentage of the outstanding guaranteed share of secured loan facilities and finance leases, the Partnership considers current and future operational performance of the vessels securing the loan facilities and finance leases and current and future expectations of the proceeds that could be received from sale of the vessels securing the loan facilities and finance leases in comparison to the outstanding principal amount if the Partnership was called on its guarantees. See Note 7c relating to the guarantees the Partnership provides for its equity-accounted joint ventures.

Segment Reporting

Segment Reporting	6 Months Ended
	Jun. 30, 2020
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting The Partnership has the following reportable segments, the LNG segment, LPG segment and the conventional tanker segment. The Partnership sold its two remaining conventional tankers, the Toledo Spirit and the Alexander Spirit , in January and October 2019, respectively. The following tables include results for the Partnership’s segments for the periods presented in these unaudited consolidated financial statements. Three Months Ended June 30, 2020 Liquefied Natural Gas Segment $ Liquefied Petroleum Gas Segment $ Conventional Tanker Segment $ Total $ Voyage revenues 137,822 10,383 — 148,205 Voyage expenses (806 ) (4,523 ) — (5,329 ) Vessel operating expenses (24,599 ) (3,808 ) — (28,407 ) Time-charter hire expenses (5,368 ) — — (5,368 ) Depreciation and amortization (30,566 ) (1,063 ) — (31,629 ) General and administrative expenses (i) (7,251 ) (632 ) — (7,883 ) Income from vessel operations 69,232 357 — 69,589 Equity income 27,795 4,360 — 32,155 Three Months Ended June 30, 2019 Liquefied Natural Gas Segment $ Liquefied Petroleum Gas Segment $ Conventional Tanker Segment $ Total $ Voyage revenues 141,833 8,858 2,369 153,060 Voyage (expenses) recoveries (3,484 ) (2,542 ) 3 (6,023 ) Vessel operating expenses (23,146 ) (3,630 ) (681 ) (27,457 ) Time-charter hire expenses (3,080 ) — — (3,080 ) Depreciation and amortization (33,139 ) (2,030 ) (169 ) (35,338 ) General and administrative expenses (i) (5,051 ) (345 ) (271 ) (5,667 ) Restructuring charges — — (818 ) (818 ) Income from vessel operations 73,933 311 433 74,677 Equity income (loss) 3,377 (1,639 ) — 1,738 Six Months Ended June 30, 2020 Liquefied Natural Gas Segment $ Liquefied Petroleum Gas Segment $ Conventional Tanker Segment $ Total $ Voyage revenues 270,392 17,700 — 288,092 Voyage expenses (1,835 ) (5,811 ) — (7,646 ) Vessel operating expenses (46,691 ) (7,820 ) — (54,511 ) Time-charter hire expenses (11,290 ) — — (11,290 ) Depreciation and amortization (61,158 ) (3,110 ) — (64,268 ) General and administrative expenses (i) (13,004 ) (1,046 ) — (14,050 ) Write-down of vessels — (45,000 ) — (45,000 ) Income (loss) from vessel operations 136,414 (45,087 ) — 91,327 Equity income 27,977 4,551 — 32,528 Six Months Ended June 30, 2019 Liquefied Natural Gas Segment $ Liquefied Petroleum Gas Segment $ Conventional Tanker Segment $ Total $ Voyage revenues 279,655 18,018 5,131 302,804 Voyage (expenses) recoveries (4,722 ) (7,212 ) 136 (11,798 ) Vessel operating expenses (43,701 ) (7,982 ) (1,875 ) (53,558 ) Time-charter hire expenses (8,671 ) — — (8,671 ) Depreciation and amortization (64,825 ) (3,951 ) (688 ) (69,464 ) General and administrative expenses (i) (11,014 ) (908 ) (377 ) (12,299 ) Restructuring charges — — (2,976 ) (2,976 ) Income (loss) from vessel operations 146,722 (2,035 ) (649 ) 144,038 Equity income (loss) 10,870 (3,554 ) — 7,316 (i) Includes direct general and administrative expenses and indirect general and administrative expenses (allocated to each segment based on estimated use of corporate resources). A reconciliation of total segment assets to total assets presented in the consolidated balance sheets is as follows: June 30, 2020 December 31, 2019 $ $ Total assets of the liquefied natural gas segment 4,482,374 4,924,627 Total assets of the liquefied petroleum gas segment 277,349 319,695 Unallocated: Cash and cash equivalents 226,328 160,221 Advances to affiliates 3,025 5,143 Consolidated total assets 4,989,076 5,409,686

Chartered-in Vessels

Chartered-in Vessels	6 Months Ended
	Jun. 30, 2020
Leases [Abstract]
Lessee, Operating Leases [Text Block]	b) Operating Leases The Partnership has chartered a vessel from its 52% -owned joint venture with Marubeni Corporation (or the MALT Joint Venture ) on a time-charter-in contract, whereby the MALT Joint Venture provides use of the vessel to the Partnership and operates the vessel for the Partnership. As at June 30, 2020 , minimum commitments to be incurred by the Partnership relating to its time-charter-in contract with the MALT Joint Venture were approximately $12.0 million (remainder of 2020), $23.7 million (2021) and $11.1 million (2022). As noted in Note 12b, these amounts do not include commitments relating to two vessels owned by Teekay BLT Corporation (or the Tangguh Joint Venture ).
Lessee, Finance Leases [Text Block]	a) Obligations related to Finance Leases June 30, December 31, Total obligations related to finance leases 1,376,011 1,410,904 Less current portion (70,955 ) (69,982 ) Long-term obligations related to finance leases 1,305,056 1,340,922 As at June 30, 2020 and December 31, 2019, the Partnership was a party to finance leases on nine LNG carriers. These nine LNG carriers were sold by the Partnership to third parties (or Lessors ) and leased back under 7.5 to 15 -year bareboat charter contracts ending in 2026 through to 2034. At inception of these leases, the weighted-average interest rate implicit in these leases was 5.1% . The bareboat charter contracts are presented as obligations related to finance leases on the Partnership's consolidated balance sheets and have purchase obligations at the end of the lease terms. The obligations of the Partnership under the bareboat charter contracts for the nine LNG carriers are guaranteed by the Partnership. The guarantee agreements require the Partnership to maintain minimum levels of tangible net worth and aggregate liquidity, and not to exceed a maximum amount of leverage. These covenants are the same as the Partnership's other corporate debt covenants (see Note 8). As at June 30, 2020 , the Partnership was in compliance with all covenants in respect of the obligations related to its finance leases. As at June 30, 2020 , the remaining commitments related to the financial liabilities of these nine LNG carriers including the amounts to be paid for the related purchase obligations, approximated $1.8 billion , including imputed interest of $435.3 million , repayable through 2034, as indicated below: Commitments as at Year June 30, 2020 Remainder of 2020 $ 69,886 2021 $ 138,601 2022 $ 136,959 2023 $ 135,459 2024 $ 132,011 Thereafter $ 1,198,366

Revenues

Revenues	6 Months Ended
	Jun. 30, 2020
Revenue from Contract with Customer [Abstract]
Revenue	Revenue The Partnership’s primary source of revenue is chartering its vessels to customers. The Partnership utilizes three primary forms of contracts consisting of time-charter contracts, voyage charter contracts and bareboat charter contracts. For a description of these contracts, see Item 18 – Financial Statements: Note 6 in the Partnership’s audited consolidated financial statements filed with its Annual Report on Form 20-F for the year ended December 31, 2019. Revenue Table The following tables contain the Partnership’s total revenue for the three and six months ended June 30, 2020 and 2019 , by contract type and by segment. Three Months Ended June 30, 2020 Liquefied Natural Gas Segment $ Liquefied Petroleum Gas Segment $ Conventional Tanker Segment $ Total $ Time charters 135,761 — — 135,761 Voyage charters — 10,383 — 10,383 Management fees and other income 2,061 — — 2,061 137,822 10,383 — 148,205 Three Months Ended June 30, 2019 Liquefied Natural Gas Segment $ Liquefied Petroleum Gas Segment $ Conventional Tanker Segment $ Total $ Time charters 133,684 — 2,369 136,053 Voyage charters — 8,858 — 8,858 Bareboat charters 6,129 — — 6,129 Management fees and other income 2,020 — — 2,020 141,833 8,858 2,369 153,060 Six Months Ended June 30, 2020 Liquefied Natural Gas Segment $ Liquefied Petroleum Gas Segment $ Conventional Tanker Segment $ Total $ Time charters 266,306 — — 266,306 Voyage charters — 17,700 — 17,700 Management fees and other income 4,086 — — 4,086 270,392 17,700 — 288,092 Six Months Ended June 30, 2019 Liquefied Natural Gas Segment $ Liquefied Petroleum Gas Segment $ Conventional Tanker Segment $ Total $ Time charters 264,459 — 5,131 269,590 Voyage charters — 18,018 — 18,018 Bareboat charters 12,191 — — 12,191 Management fees and other income 3,005 — — 3,005 279,655 18,018 5,131 302,804 The following table contains the Partnership’s total revenue for the three and six months ended June 30, 2020 and 2019, by contracts or components of contracts accounted for as leases and those not accounted for as leases: Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 $ $ $ $ Lease revenue Lease revenue from lease payments of operating leases 127,289 131,062 246,888 260,822 Interest income on lease receivables 12,595 12,969 25,261 25,763 Variable lease payments - cost reimbursements (1) 1,263 1,295 2,320 1,975 141,147 145,326 274,469 288,560 Non-lease revenue Non-lease revenue - related to sales-type or direct financing leases 4,997 5,714 9,537 11,239 Management fees and other income 2,061 2,020 4,086 3,005 7,058 7,734 13,623 14,244 Total 148,205 153,060 288,092 302,804 (1) Reimbursements for vessel operating expenditures and dry-docking expenditures received from the Partnership's customers relating to such costs incurred by the Partnership to operate the vessel for the customer pursuant to charters accounted for as operating leases. Net Investments in Direct Financing Leases and Sales-Type Leases As at June 30, 2020 , the Partnership had three LNG carriers, excluding the vessels in its equity-accounted joint ventures, that are accounted for as direct financing leases. For a description of the Partnership's LNG carriers accounted for as direct financing leases, see Item 18 – Financial Statements: Note 6 to the Partnership's audited consolidated financial statements included in its Annual Report on Form 20-F for the year ended December 31, 2019. As at December 31, 2019, the Partnership had two additional LNG carriers, the WilForce and the WilPride, that were chartered to Awilco LNG ASA (or Awilco ) which were accounted for as sales-type leases. In January 2020, Awilco purchased both LNG carriers from the Partnership and paid the Partnership the associated purchase obligation, deferred hire amounts and interest on deferred hire amounts thereon, totaling over $260 million relating to these two vessels. As at June 30, 2020 , estimated lease payments to be received by the Partnership related to its direct financing leases in each of the next five years were approximately $ 32.3 million (remainder of 2020), $ 64.2 million (2021), $ 64.2 million (2022), $ 64.0 million (2023), $ 64.3 million (2024) and an aggregate of $ 510.6 million thereafter. The leases are scheduled to end between 2029 and 2039. Operating Leases As at June 30, 2020 , the minimum scheduled future rentals to be received by the Partnership in each of the next five years for the lease and non-lease elements related to charters that were accounted for as operating leases are approximately $267.7 million (remainder of 2020), $475.8 million (2021), $371.7 million (2022), $307.0 million (2023), and $250.8 million (2024). Minimum scheduled future rentals on operating lease contracts do not include rentals from vessels in the Partnership’s equity-accounted joint ventures, rentals from unexercised option periods of contracts that existed on June 30, 2020 , variable or contingent rentals, or rentals from contracts which were entered into or commenced after June 30, 2020 . Therefore, the minimum scheduled future rentals on operating leases should not be construed to reflect total charter hire revenues for any of these five years. Contract Liabilities As at June 30, 2020 , the Partnership had $26.4 million of advanced payments recognized as contract liabilities included in unearned revenue (December 31, 2019 – $24.9 million , June 30, 2019 – $20.8 million and January 1, 2019 – $26.4 million ). The Partnership recognized $22.0 million and $20.3 million of revenue for the three months ended June 30, 2020 and 2019, respectively, that was recognized as a contract liability at the beginning of such three-month periods. The Partnership recognized $24.9 million and $26.4 million of revenue for the six months ended June 30, 2020 and 2019, respectively, that was recognized as a contract liability at the beginning of such six-month periods.

Equity-Accounted Joint Ventures

Equity-Accounted Joint Ventures	6 Months Ended
	Jun. 30, 2020
Equity Method Investments and Joint Ventures [Abstract]
Equity-Accounted Investments	Equity-Accounted Joint Ventures For a description of the Partnership's equity-accounted joint ventures, see Item 18 - Financial Statements: Note 7a in the Partnership's audited consolidated financial statements filed with its Annual Report on Form 20-F for the year ended December 31, 2019. The Partnership's potential credit losses associated with its equity-accounted joint ventures are described in Note 3b and are excluded from the amounts in this note. a) As of June 30, 2020 and December 31, 2019, the Partnership had loans outstanding to the Exmar LPG Joint Venture, in which the Partnership has a 50% ownership interest, of $52.3 million . These advances bear interest at LIBOR plus 0.50% and have no fixed repayment terms. For the three and six months ended June 30, 2020 , interest earned on these loans amounted to $0.3 million and $0.6 million , respectively, (three and six months ended June 30, 2019 – $0.4 million and $0.8 million , respectively) and is included in interest income in the Partnership's consolidated statements of income. As of June 30, 2020 and December 31, 2019 , the interest accrued on these advances was $ nil and $0.3 million , respectively. Both the advances and the accrued interest on these advances are included in investments in and advances, net to equity-accounted joint ventures in the Partnership’s consolidated balance sheets. b) As of June 30, 2020 and December 31, 2019, the Partnership had loans outstanding to the Bahrain LNG Joint Venture, in which the Partnership has a 30% ownership interest, of $73.4 million . These advances bear interest at 6.0% . For the three and six months ended June 30, 2020 , interest earned on these loans amounted to $1.1 million and $2.2 million , respectively ( three and six months ended June 30, 2019 – $0.9 million and $1.8 million , respectively). For the three and six months ended June 30, 2020 , the interest earned was included in interest income in the Partnership’s consolidated statements of income and for the three and six months ended June 30, 2019, the interest earned was capitalized as part of investments in and advances to equity-accounted joint ventures in the Partnership's consolidated balance sheets. As of June 30, 2020 and December 31, 2019 , the interest accrued on these advances was $2.8 million and $0.5 million , respectively. Both the advances and the accrued interest on these advances are included in investments in and advances, net to equity-accounted joint ventures in the Partnership’s consolidated balance sheets. c) The Partnership guarantees its proportionate share of certain loan facilities and obligations on interest rate swaps for its equity-accounted joint ventures for which the aggregate principal amount of the loan facilities and fair value of the interest rate swaps as at June 30, 2020 was $1.4 billion . As of the date these unaudited consolidated financial statements were issued, the Partnership's equity-accounted joint ventures were in compliance with all covenants relating to these loan facilities that the Partnership guarantees.

Long-Term Debt

Long-Term Debt	6 Months Ended
	Jun. 30, 2020
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt June 30, 2020 December 31, 2019 $ $ U.S. Dollar-denominated Revolving Credit Facilities due in 2022 286,594 212,000 U.S. Dollar-denominated Term Loans and Bonds due from 2020 to 2030 916,079 1,114,707 Norwegian Krone-denominated Bonds due from 2021 to 2023 212,985 347,163 Euro-denominated Term Loans due from 2023 to 2024 153,200 165,376 Other U.S. Dollar-denominated Loans 446 3,300 Total principal 1,569,304 1,842,546 Unamortized discount and debt issuance costs (10,820 ) (11,150 ) Total debt 1,558,484 1,831,396 Less current portion (295,282 ) (393,065 ) Long-term debt 1,263,202 1,438,331 As at June 30, 2020 , the Partnership had two revolving credit facilities available, which, as at such date, provided for borrowings of up to $366.6 million ( December 31, 2019 – $378.2 million ), of which $80.0 million ( December 31, 2019 – $166.2 million ) was undrawn. Interest payments are based on LIBOR plus a margin, where margins ranged from 1.40% to 2.25% . The amount available under the two revolving credit facilities will be reduced by $11.8 million during the remainder of 2020, $24.4 million in 2021 and $330.4 million in 2022, when both revolving credit facilities mature. The revolving credit facilities may be used by the Partnership to fund general partnership purposes. One of the revolving credit facilities is unsecured, while the other revolving credit facility is collateralized by first-priority mortgages granted on two of the Partnership’s vessels, together with other related security, and includes a guarantee from two of its subsidiaries of all outstanding amounts. As at June 30, 2020 , the Partnership had five U.S. Dollar-denominated term loans and bonds outstanding which totaled $916.1 million in aggregate principal amount ( December 31, 2019 – $1.1 billion ). Interest payments on the term loans are based on LIBOR plus a margin, where margins ranged from 0.30% to 3.25% and fixed interest payments on the bonds ranging from 4.11% to 4.41% . The five combined term loans and bonds require quarterly interest and principal payments and four have balloon or bullet repayments due at maturity. The term loans and bonds are collateralized by first-priority mortgages on the 16 Partnership vessels to which the loans relate, together with certain other related security. In addition, as at June 30, 2020 , all of the outstanding term loans were guaranteed by either the Partnership or the ship-owning entities within the RasGas II Joint Venture, in which the Partnership has a 70% ownership interest. The Partnership has Norwegian Krone (or NOK ) 2.1 billion of senior unsecured bonds in the Norwegian bond market that mature through 2023 ( December 31, 2019 – NOK 3.1 billion ). As at June 30, 2020 , the total amount of the bonds, which are listed on the Oslo Stock Exchange, was $213.0 million ( December 31, 2019 – $347.2 million ). The interest payments on the bonds are based on Norwegian Interbank Offered Rate (or NIBOR ) plus a margin, where margins ranged from 4.60% to 6.00% . The Partnership has entered into cross currency rate swaps, to swap all interest and principal payments of the bonds into U.S. Dollars, with the interest payments fixed at rates ranging from 7.72% to 7.89% and the transfer of principal fixed at $248.5 million upon maturity in exchange for NOK 2.1 billion (see Note 11). The Partnership has two Euro-denominated term loans outstanding, which as at June 30, 2020 , totaled 136.4 million Euros ( $153.2 million ) ( December 31, 2019 – 147.5 million Euros ( $165.4 million )). Interest payments are based on the Euro Interbank Offered Rate (or EURIBOR ) plus margins, where margins ranged from 0.60% to 1.95% as at June 30, 2020 , and the loans require monthly and semi-annual interest and principal payments. The term loans have varying maturities through 2024. The term loans are collateralized by first-priority mortgages on two of the Partnership vessels to which the loans relate, together with certain other related security and are guaranteed by the Partnership and one of its subsidiaries. As at June 30, 2020 , the RasGas II Joint Venture had a $0.4 million loan payable to its 30% non-controlling interest owner (December 31, 2019 – $3.3 million ). The interest on the loan is based on LIBOR plus 1.0% and is payable on demand. The weighted-average interest rates for the Partnership’s long-term debt outstanding as at June 30, 2020 and December 31, 2019 were 2.88% and 4.12% , respectively. These rates do not reflect the effect of related interest rate swaps that the Partnership has used to economically hedge certain of its floating-rate debt (see Note 11). All Euro-denominated term loans and NOK-denominated bonds are revalued at the end of each period using the then-prevailing U.S. Dollar exchange rate. Due primarily to the revaluation of the Partnership’s NOK-denominated bonds, the Partnership’s Euro-denominated term loans and restricted cash, and the change in the valuation of the Partnership’s cross currency swaps, the Partnership incurred foreign exchange losses of $11.6 million and $7.2 million for the three months ended June 30, 2020 and 2019, respectively, and $6.9 million and $8.0 million for the six months ended June 30, 2020 and 2019, respectively. The aggregate annual long-term debt principal repayments required subsequent to June 30, 2020 are $61.0 million (remainder of 2020 ), $405.2 million ( 2021 ), $373.1 million ( 2022 ), $202.0 million ( 2023 ), $102.1 million ( 2024 ) and $425.9 million ( thereafter ). Certain loan agreements require that (a) the Partnership maintains minimum levels of tangible net worth and aggregate liquidity, (b) the Partnership maintain certain ratios of vessel values related to the relevant outstanding loan principal balance, (c) the Partnership not exceed a maximum amount of leverage, and (d) certain of the Partnership’s subsidiaries maintain restricted cash deposits. As at June 30, 2020 , the Partnership has three credit facilities with an aggregate outstanding loan balance of $380.0 million that require it to maintain minimum vessel-value-to-outstanding-loan-principal-balance ratios of 115% , 120% and 135% , which as at June 30, 2020 , were 218% , 138% and 192% , respectively. The vessel values used in calculating these ratios are the appraised values provided by third parties, where available, or prepared by the Partnership based on second-hand sale and purchase market data. Since vessel values can be volatile, the Partnership’s estimates of market value may not be indicative of either the current or future prices that could be obtained if the Partnership sold any of the vessels. The Partnership’s ship-owning subsidiaries may not, among other things, pay dividends or distributions if the Partnership's subsidiaries are in default under their term loans or revolving credit facilities and, in addition, one

Income Tax

Income Tax	6 Months Ended
	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Income Tax	Income Tax The components of the provision for income taxes were as follows: Three Months Ended June 30, Six months ended June 30, 2020 2019 2020 2019 $ $ $ $ Current 1,131 (1,603 ) (1,381 ) (4,035 ) Deferred 673 (146 ) 673 (292 ) Income tax recovery (expense) 1,804 (1,749 ) (708 ) (4,327 ) Included in the Partnership's current income tax recovery (expense) are provisions for uncertain tax positions relating to freight taxes. The Partnership does not presently anticipate that its provisions for these uncertain tax positions will significantly increase in the next 12 months; however, this is dependent on the jurisdictions in which vessel trading activity occurs. The Partnership reviews its freight tax obligations on a regular basis and may update its assessment of its tax positions based on available information at that time. Such information may include additional legal advice as to the applicability of freight taxes in relevant jurisdictions. Freight tax regulations are subject to change and interpretation; therefore, the amounts recorded by the Partnership may change accordingly.

Related Party Transactions

Related Party Transactions	6 Months Ended
	Jun. 30, 2020
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions a) The following table and related footnotes provide information about certain of the Partnership's related party transactions for the periods indicated: Three Months Ended June 30, Six months ended June 30, 2020 2019 2020 2019 $ $ $ $ Voyage revenues (i)(iii) 9,200 12,233 18,177 20,794 Vessel operating expenses (i)(ii) (1,337 ) (2,452 ) (2,733 ) (5,267 ) Time-charter hire expenses (iii) (5,368 ) (3,080 ) (11,290 ) (8,671 ) General and administrative expenses (iv) (3,787 ) (4,170 ) (7,585 ) (8,324 ) Equity income (v) 603 238 1,206 442 (i) In September 2018, the Partnership’s FSU, the Bahrain Spirit , commenced its 21 -year charter contract with the Bahrain LNG Joint Venture. Voyage revenues from the charter of Bahrain Spirit to the Bahrain LNG Joint Venture for the three and six months ended June 30, 2020 amounted to $7.2 million and $14.1 million , respectively ( $7.7 million and $15.3 million for the three and six months ended June 30, 2019, respectively). In addition, the Partnership has an operation and maintenance contract with the Bahrain LNG Joint Venture and had an operating and maintenance subcontract with Teekay Marine Solutions (Bermuda) Ltd. (or TMS ), an entity wholly-owned by Teekay Tankers Ltd., which is controlled by Teekay Corporation, relating to the LNG regasification terminal in Bahrain. The contract with TMS was terminated in August 2019 and such services are currently managed by the Partnership. The subcontractor fees from TMS for the three and six months ended June 30, 2019 of $1.0 million and $2.0 million , respectively, are included in vessel operating expenses in the Partnership's consolidated statements of income. Fees received in relation to the operation and maintenance contract from the Bahrain LNG Joint Venture for the three and six months ended June 30, 2020 were $2.0 million and $4.1 million , respectively ( $2.0 million and $3.0 million for the three and six months ended June 30, 2019, respectively) and are included in voyage revenues in the Partnership's consolidated statements of income. (ii) The Partnership and certain of its operating subsidiaries have entered into service agreements with certain subsidiaries of Teekay Corporation pursuant to which the Teekay Corporation subsidiaries provide to the Partnership and its subsidiaries crew training and technical management services. In addition, as part of the Partnership's acquisition of its ownership interest in the Pan Union Joint Venture in 2014, the Partnership entered into an agreement with a subsidiary of Teekay Corporation whereby Teekay Corporation's subsidiary provided, on behalf of the Partnership, shipbuilding supervision and crew training services for four LNG carrier newbuildings in the Pan Union Joint Venture, up to their delivery dates from 2017 to 2019. All costs incurred by these Teekay Corporation subsidiaries related to these services are charged to the Partnership and recorded as part of vessel operating expenses. (iii) Commencing in September 2018, the Partnership entered into an agreement with the MALT Joint Venture to charter in one of the MALT Joint Venture's LNG carriers, the Magellan Spirit (see Note 5b). The time-charter hire expenses charged for the three and six months ended June 30, 2020 were $5.4 million and $11.3 million , respectively ( $3.1 million and $8.7 million for the three and six months ended June 30, 2019, respectively). In addition, in May 2019, the Partnership entered into an agreement with a subsidiary of Teekay Corporation to charter the Magellan Spirit until October 31, 2019. The Partnership recognized revenue of $2.5 million for the three and six months ended June 30, 2019 from this charter to Teekay Corporation. (iv) Includes administrative, advisory, business development, commercial and strategic consulting services charged by Teekay Corporation and reimbursements to Teekay Corporation and the Partnership's General Partner for costs incurred on the Partnership's behalf for the conduct of the Partnership's business. (v) During the three and six months ended June 30, 2020, the Partnership charged fees of $0.6 million and $1.2 million , respectively ( $0.2 million and $0.4 million for the three and six months ended June 30, 2019, respectively) to the Yamal LNG Joint Venture relating to the successful bid process for the construction and chartering of six ARC7 LNG carriers. The fees are reflected in equity income in the Partnership’s consolidated statements of income. b) As at June 30, 2020 and December 31, 2019 , non-interest-bearing advances to affiliates totaled $3.0 million and $5.1 million , respectively, and non-interest-bearing advances from affiliates totaled $18.3 million and $7.0 million , respectively. These advances are unsecured and have no fixed repayment terms. Affiliates are entities that are under common control with the Partnership. c) The Partnership entered into services agreements with certain subsidiaries of Teekay Corporation pursuant to which the Teekay Corporation subsidiaries provided the Partnership with shipbuilding and site supervision services related to certain LNG carrier newbuildings the Partnership had ordered, which services ended when the Partnership's last wholly-owned LNG newbuilding carrier delivered in January 2019. These costs were capitalized and included as part of vessels and equipment in the Partnership’s consolidated balance sheets. For the six months ended June 30, 2019 , the Partnership incurred shipbuilding and site supervision costs of $1.8 million . d) In December 2019, as part of dissolving certain of the Partnership's controlled subsidiaries as a result of a simplification transaction, the Partnership acquired the General Partner's 1% non-controlling interest in certain of the Partnership's subsidiaries for an amount initially estimated at $2.7 million . In April 2020, the purchase price was finalized at $2.2 million . e) On May 11, 2020, Teekay Corporation and the Partnership eliminated all of the Partnership's incentive distribution rights, which were held by the General Partner, in exchange for 10.75 million

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	6 Months Ended
	Jun. 30, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities The Partnership uses derivative instruments in accordance with its overall risk management policy. Foreign Exchange Risk From time to time, the Partnership economically hedges portions of its forecasted expenditures denominated in foreign currencies with foreign currency forward contracts. As at June 30, 2020 , the Partnership was not committed to any foreign currency forward contracts. The Partnership entered into cross currency swaps concurrently with the issuance of its NOK-denominated senior unsecured bonds (see Note 8), and pursuant to these swaps, the Partnership receives the principal amount in NOK on maturity dates of the swaps in exchange for payments of a fixed U.S. Dollar amount. In addition, the cross currency swaps exchange a receipt of floating interest in NOK based on NIBOR plus a margin for a payment of U.S. Dollar fixed interest. The purpose of the cross currency swaps is to economically hedge the foreign currency exposure on the payment of interest and principal of the Partnership’s NOK-denominated bonds due in 2021 and 2023, and to economically hedge the interest rate exposure. The following table reflects information relating to the cross currency swaps as at June 30, 2020 . Floating Rate Receivable Principal Amount NOK (in thousands) Principal Amount $ Reference Rate Margin Fixed Rate Payable Fair Value / Carrying Amount of Asset (Liability) $ Weighted- Average Remaining Term (Years) 1,200,000 146,500 NIBOR 6.00 % 7.72 % (24,681 ) 1.3 850,000 102,000 NIBOR 4.60 % 7.89 % (21,498 ) 3.2 (46,179 ) Interest Rate Risk The Partnership enters into interest rate swaps which exchange a receipt of floating interest for a payment of fixed interest to reduce the Partnership’s exposure to interest rate variability on certain of its outstanding floating-rate debt. As at June 30, 2020 , the Partnership was committed to the following interest rate swap agreements: Interest Rate Index Principal Amount $ Fair Value / Carrying Amount of Asset (Liability) $ Weighted- Average Remaining Term (years) Fixed Swap Rate (i) LIBOR-Based Debt: U.S. Dollar-denominated interest rate swaps (ii) LIBOR 112,500 (22,910 ) 8.5 5.2% U.S. Dollar-denominated interest rate swaps (ii) LIBOR 16,067 (278 ) 1.1 2.8% U.S. Dollar-denominated interest rate swaps (iii) (iv) LIBOR 150,256 (6,562 ) 4.2 1.4% U.S. Dollar-denominated interest rate swaps (iii) (iv) LIBOR 307,632 (30,170 ) 2.0 3.5% U.S. Dollar-denominated interest rate swaps (iv) LIBOR 166,376 (14,601 ) 6.5 2.3% EURIBOR-Based Debt: Euro-denominated interest rate swaps EURIBOR 70,220 (6,967 ) 3.2 3.9% (81,488 ) (i) Excludes the margins the Partnership pays on its floating-rate term loans, which, at June 30, 2020 , ranged from 0.30% to 3.25% . (ii) Principal amount reduces semi-annually. (iii) These interest rate swaps are subject to mandatory early termination in 2021 and 2024 whereby the swaps will be settled based on their fair value at that time. (iv) Principal amount reduces quarterly. As at June 30, 2020 , the Partnership had multiple interest rate swaps and cross currency swaps with the same counterparty that are subject to the same master agreement. Each of these master agreements provides for the net settlement of all swaps subject to that master agreement through a single payment in the event of default or termination of any one swap. The fair value of these derivative instruments is presented on a gross basis in the Partnership’s consolidated balance sheets. As at June 30, 2020 , these interest rate swaps and cross currency swaps had an aggregate fair value asset of $ nil ( December 31, 2019 – $2.2 million ) and an aggregate fair value liability of $104.8 million ( December 31, 2019 – $74.6 million ). As at June 30, 2020 , the Partnership had $23.3 million ( December 31, 2019 – $14.3 million ) on deposit as security for swap liabilities under certain master agreements. The deposit is presented in restricted cash – current and long-term on the Partnership's consolidated balance sheets. Credit Risk The Partnership is exposed to credit loss in the event of non-performance by the counterparties to the interest rate swap agreements. In order to minimize counterparty risk, the Partnership only enters into derivative transactions with counterparties that are rated A- or better by Standard & Poor’s or A3 or better by Moody’s at the time of the transactions. In addition, to the extent practical, interest rate swaps are entered into with different counterparties to reduce concentration risk. The following table presents the classification and fair value amounts of derivative instruments, segregated by type of contract, on the Partnership’s consolidated balance sheets. Accounts receivable $ Current portion of derivative assets $ Derivative assets $ Accrued liabilities $ Current portion of derivative liabilities $ Derivative liabilities $ As at June 30, 2020 Derivatives designated as a cash flow hedge: Interest rate swap agreements — — — (63 ) (3,085 ) (11,453 ) Derivatives not designated as a cash flow hedge: Interest rate swap agreements — — — (3,399 ) (25,917 ) (37,571 ) Cross currency swap agreements — — — (872 ) (5,995 ) (39,312 ) — — — (4,334 ) (34,997 ) (88,336 ) As at December 31, 2019 Derivatives designated as a cash flow hedge: Interest rate swap agreements — — — (12 ) (837 ) (3,475 ) Derivatives not designated as a cash flow hedge: Interest rate swap agreements 21 355 1,834 (2,821 ) (14,758 ) (28,544 ) Foreign currency forward contracts — — — — (202 ) — Cross currency swap agreements — — — (456 ) (22,661 ) (18,987 ) 21 355 1,834 (3,289 ) (38,458 ) (51,006 ) Realized and unrealized losses relating to non-designated interest rate swap agreements, foreign currency forward contracts and the Toledo Spirit time-charter derivative are recognized in earnings and reported in realized and unrealized loss on non-designated derivative instruments in the Partnership’s consolidated statements of income. The effect of the (loss) gain on these derivatives on the Partnership’s consolidated statements of income is as follows: Three Months Ended June 30, 2020 2019 Realized gains (losses) Unrealized gains (losses) Total Realized gains (losses) Unrealized gains (losses) Total $ $ $ $ $ $ Interest rate swap agreements (3,662 ) (4,854 ) (8,516 ) (2,392 ) (5,333 ) (7,725 ) Foreign currency forward contracts — — — — (101 ) (101 ) (3,662 ) (4,854 ) (8,516 ) (2,392 ) (5,434 ) (7,826 ) Six Months Ended June 30, 2020 2019 Realized gains (losses) Unrealized gains (losses) Total Realized gains (losses) Unrealized gains (losses) Total $ $ $ $ $ $ Interest rate swap agreements (6,573 ) (22,375 ) (28,948 ) (4,777 ) (9,525 ) (14,302 ) Foreign currency forward contracts (241 ) 202 (39 ) — (101 ) (101 ) Toledo Spirit time-charter derivative — — — — (40 ) (40 ) (6,814 ) (22,173 ) (28,987 ) (4,777 ) (9,666 ) (14,443 ) Realized and unrealized gains (losses) relating to cross currency swap agreements are recognized in earnings and reported in foreign currency exchange loss in the Partnership’s consolidated statements of income. The effect of the gain (loss) on these derivatives on the Partnership's consolidated statements of income is as follows: Three Months Ended June 30, 2020 2019 Realized gains (losses) Unrealized gains (losses) Total Realized gains (losses) Unrealized gains (losses) Total $ $ $ $ $ $ Cross currency swap agreements (1,430 ) 45,881 44,451 (1,087 ) (139 ) (1,226 ) Cross currency swap agreements maturity (33,844 ) — (33,844 ) — — — (35,274 ) 45,881 10,607 (1,087 ) (139 ) (1,226 ) Six Months Ended June 30, 2020 2019 Realized gains (losses) Unrealized gains (losses) Total Realized gains (losses) Unrealized gains (losses) Total $ $ $ $ $ $ Cross currency swap agreements (3,247 ) (3,659 ) (6,906 ) (2,521 ) (2,059 ) (4,580 ) Cross currency swap agreements maturity (33,844 ) — — (33,844 ) — — — (37,091 ) (3,659 ) (40,750 ) (2,521 ) (2,059 ) (4,580 ) For the periods indicated, the following table presents the gains or losses on interest rate swap agreements designated and qualifying as cash flow hedges and their impact on other comprehensive loss (or OCI ). The following table excludes any interest rate swap agreements designated and qualifying as cash flow hedges in the Partnership’s equity-accounted joint ventures. Three Months Ended June 30, 2020 Three Months Ended June 30, 2019 Amount of Loss Recognized in OCI $ Amount of Loss Reclassified from Accumulated OCI to Interest Expense $ Amount of Loss Recognized in OCI $ Amount of Gain Reclassified from Accumulated OCI to Interest Expense $ (1,055 ) (482 ) (4,570 ) 157 Six Months Ended June 30, 2020 Six Months Ended June 30, 2019 Amount of Loss Recognized in OCI $ Amount of Loss Reclassified from Accumulated OCI to Interest Expense $ Amount of Loss Recognized in OCI $ Amount of Gain Reclassified from Accumulated OCI to Interest Expense $ (10,226 ) (634 ) (7,402 ) 408

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies a) The Partnership’s share of commitments to fund equipment installation and other construction contract costs as at June 30, 2020 are as follows: Total Remainder of 2021 2022 Certain consolidated LNG carriers (i) 41,626 4,058 22,917 14,651 Bahrain LNG Joint Venture (ii) 11,351 11,351 — — 52,977 15,409 22,917 14,651 (i) In June 2019, the Partnership entered into an agreement with a contractor to supply equipment on certain of the Partnership's LNG carriers in 2021 and 2022, for an estimated installed cost of $58.1 million . As at June 30, 2020 , the estimated remaining cost of this installation was $41.6 million . (ii) The Partnership has a 30% ownership interest in the Bahrain LNG Joint Venture which has an LNG receiving and regasification terminal in Bahrain. As at June 30, 2020 , the Partnership's proportionate share of the estimated remaining cost of $11.4 million relates to the final construction installment on the LNG terminal. The Bahrain LNG Joint Venture has remaining debt financing of $24 million , which is undrawn, of which $7 million relates to the Partnership's proportionate share of the construction commitments included in the table above. b) The Partnership owns 70% of the Tangguh Joint Venture, which is a party to operating leases whereby the Tangguh Joint Venture is leasing the Tangguh Hiri and Tangguh Sago LNG carriers (or the Tangguh LNG Carriers ) to a third party, which is in turn leasing the vessels back to the joint venture. The amounts referenced in Note 5b do not include the Partnership’s minimum charter hire payments to be paid and received under these leases, which are described in more detail in Item 18 – Financial Statements: Note 14 to the Partnership’s audited consolidated financial statements filed with its Annual Report on Form 20-F for the year ended December 31, 2019. Under the terms of the leasing arrangement for the Tangguh LNG Carriers, whereby the Tangguh Joint Venture is the lessee, the lessor claims tax depreciation on its lease of these vessels. As is typical in these types of leasing arrangements, tax and change of law risks are assumed by the lessee. Lease payments under the lease arrangements are based on certain tax and financial assumptions at the commencement of the leases. If an assumption proves to be incorrect, the lessor is entitled to increase the lease payments to maintain its agreed after-tax margin. As at June 30, 2020 , the carrying amount of this estimated tax indemnification obligation relating to the leasing arrangement through the Tangguh Joint Venture was $5.9 million (December 31, 2019 – $6.1 million ) and is included as part of other long-term liabilities in the consolidated balance sheets of the Partnership. c) Management is required to assess whether the Partnership will have sufficient liquidity to continue as a going concern for the one-year period following the issuance of its consolidated financial statements. The Partnership had a working capital deficit of $271.7 million as at June 30, 2020 . This working capital deficit includes $295.3 million related to scheduled maturities and repayments of long-term debt in the 12 months following June 30, 2020 . Based on the Partnership’s liquidity at the date these unaudited consolidated financial statements were issued, the liquidity it expects to generate from operations over the following year, the dividends it expects to receive from its equity-accounted joint ventures and debt refinancings, the Partnership estimates that it will have sufficient liquidity to continue as a going concern for at least the one-year period following the issuance of these unaudited consolidated financial statements.

Total Capital and Net Income Pe

Total Capital and Net Income Per Unit	6 Months Ended
	Jun. 30, 2020
Equity [Abstract]
Total Capital and Net (Loss) Income Per Unit	and Net Income Per Common Unit As at June 30, 2020 , approximately 58.6% of the Partnership’s common units outstanding were held by the public. The remaining common units, as well as the 1.8% general partner interest, were held by subsidiaries of Teekay Corporation. All of the Partnership's outstanding Series A Cumulative Redeemable Perpetual Preferred Units (or the Series A Preferred Units ) and Series B Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Units (or the Series B Preferred Units ) are held by the public. On May 11, 2020, Teekay Corporation and the Partnership agreed to eliminate all of the Partnership's incentive distribution rights, which were held by the General Partner, in exchange for 10.75 million newly-issued common units of the Partnership. The common units were valued at $122.6 million , based on the prevailing unit price at the time of issuance. This transaction has decreased the General Partner’s equity by $2.3 million representing its 1.8% proportionate share of the cost to eliminate the incentive distribution rights. This transaction has increased the limited partners’ equity by $2.3 million representing the excess value of the common units issued over its 98.2% share of the cost to eliminate the incentive distribution rights. Subsequent to the elimination of the Partnership’s incentive distribution rights, the amount of net income (loss) attributable to the limited partners and General Partner is based on the limited partners' and General Partner’s respective ownership percentages. For information on how the General Partner’s and common unitholders’ interests in net income were calculated prior to May 11, 2020, please refer to Item 18 – Financial Statements: Note 16 to the Partnership’s audited consolidated financial statements filed with its Annual Report on Form 20-F for the year ended December 31, 2019. Net Income (Loss) Per Common Unit Limited partners' interest in net income (loss) per common unit is determined by dividing net income (loss), after deducting the amount of net income attributable to the non-controlling interests, the General Partner’s interest and the distributions on the Series A and Series B Preferred Units by the weighted-average number of common units outstanding during the period. The computation of limited partners’ interest in net income per common unit - diluted assumes the exercise of all dilutive restricted units using the treasury stock method. The computation of limited partners’ interest in net loss per common unit - diluted does not assume such exercises as the effect would be anti-dilutive. The distributions payable on the Series A and Series B Preferred Units for the three and six months ended June 30, 2020 and 2019 were $6.4 million and $12.9 million , respectively. Three Months Ended June 30, 2020 2019 $ $ Limited partners' interest in net income for basic net income per common unit 37,796 9,810 Weighted average number of common units 82,197,665 78,603,636 Dilutive effect of unit-based compensation 64,570 81,901 Weighted average number of common units and common unit equivalents 82,262,235 78,685,537 Limited partner's interest in net income per common unit: Basic 0.46 0.12 Diluted 0.46 0.12 Six Months Ended June 30, 2020 2019 $ $ Limited partners' interest in net (loss) income for basic net (loss) income per common unit (834 ) 24,698 Weighted average number of common units 79,629,623 78,600,342 Dilutive effect of unit-based compensation — 81,921 Weighted average number of common units and common unit equivalents 79,629,623 78,682,263 Limited partner's interest in net (loss) income per common unit: Basic (0.01 ) 0.31 Diluted (0.01 ) 0.31 Common Unit Repurchases In December 2018, the Partnership announced that the General Partner's Board of Directors had authorized a common unit repurchase program for the repurchase of up to $100 million of the Partnership's common units. During the three and six months ended June 30, 2020, the Partnership repurchased nil common units and 1.4 million common units, respectively, for $ nil and $15.3 million , respectively, and associated general partnership interest of $ nil and $0.3 million , respectively. For the three and six months ended June 30, 2019, the Partnership repurchased 0.2 million common units and 1.0 million common units, respectively, for $2.5 million and $11.8 million , respectively, and associated general partnership interest of $0.1 million and $ 0.2 million , respectively. Since the announcement of the common unit repurchase program, the Partnership has repurchased a total of 3.6 million common units for a total cost of $44.2 million . As at June 30, 2020 , the remaining dollar value of units that may be purchased under the program is approximately $55.8 million

Restructuring Charges Restructu

Restructuring Charges Restructuring Charges	6 Months Ended
	Jun. 30, 2020
Restructuring and Related Activities [Abstract]
Restructuring and Related Activities Disclosure [Text Block]	Restructuring Charges In January 2019, the charterer, who was also the owner of the Toledo Spirit conventional tanker, sold the vessel to a third party. As a result of this sale, the Partnership returned the vessel to the owner and incurred seafarer severance payments of $0.8 million and $3.0 million for the three and six months ended June 30, 2019 which were presented as restructuring charges in the Partnership's consolidated statements of income. As at June 30, 2020 and December 31, 2019 , the remaining balance of unpaid restructuring charges of $0.6 million is included in accrued liabilities in the Partnership's consolidated balance sheets.

Write-down of Vessels

Write-down of Vessels	6 Months Ended
	Jun. 30, 2020
Property, Plant and Equipment [Abstract]
Write-down and Sale of Vessels	Write-down of Vessels In March 2020, the carrying values for six of the Partnership's seven wholly-owned multi-gas carriers (the Unikum Spirit , Vision Spirit , Pan Spirit, Cathinka Spirit , Camilla Spirit and Sonoma Spirit ), were written down to their estimated fair values, using appraised values, primarily due to the lower near-term outlook for these types of vessels as a result of the economic environment at that time, as well as the Partnership receiving notification that the Partnership's commercial management agreement with a third-party commercial manager will dissolve in September 2020. The total impairment charge of $45.0 million is included in write-down of vessels for the six months ended June 30, 2020 in the Partnership's consolidated statements of income.

Supplemental Cash Flow Informat

Supplemental Cash Flow Information	6 Months Ended
	Jun. 30, 2020
Supplemental Cash Flow Elements [Abstract]
Supplemental Cash Flow Information	Supplemental Cash Flow Information a) The following is a tabular reconciliation of the Partnership's cash, cash equivalents and restricted cash balances for the periods presented in the Partnership's consolidated statements of cash flows. June 30, 2020 December 31, 2019 June 30, 2019 December 31, 2018 $ $ $ $ Cash and cash equivalents 226,328 160,221 124,880 149,014 Restricted cash – current 11,544 53,689 48,869 38,329 Restricted cash – long-term 54,603 39,381 31,439 35,521 292,475 253,291 205,188 222,864 The Partnership maintains restricted cash deposits relating to certain term loans, collateral for cross currency swaps (see Note 11), performance bond collateral and amounts received from charterers to be used only for dry-docking expenditures and emergency repairs. b) The sale of the Toledo Spirit by its owner in January 2019 resulted in the vessel being returned to its owner with the obligation related to finance lease being concurrently extinguished. As a result, the sale of the vessel and the concurrent extinguishment of the corresponding obligation related to the finance lease of $23.6 million

Subsequent Events

Subsequent Events	6 Months Ended
	Jun. 30, 2020
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On August 20, 2020, the Partnership priced, in the Norwegian bond market, NOK 1.0 billion in new senior unsecured bonds that mature in September 2025. The new bond issuance has an aggregate principal amount equivalent to approximately $112 million and all payments were swapped into a U.S. Dollar fixed-rate coupon of approximately 5.74% . The bond offering is expected to close in early-September 2020 and the Partnership intends to use the net proceeds of the new bond issuance for general partnership purposes. The Partnership will apply for listing of the new bonds on the Oslo Stock Exchange.

Accounting Pronouncements (Poli

Accounting Pronouncements (Policies)	6 Months Ended
	Jun. 30, 2020
Accounting Changes and Error Corrections [Abstract]
New accounting pronouncements	Accounting Pronouncements In June 2016, the Financial Accounting Standards Board (or FASB ) issued Accounting Standards Update (or ASU ) 2016-13, Financial Instruments - Credit Losses: Measurement of Credit Losses on Financial Instruments (or ASU 2016-13 ). ASU 2016-13 introduced a new credit loss methodology, which requires earlier recognition of potential credit losses, while also providing additional transparency about credit risk. This new credit loss methodology utilizes a lifetime “expected credit loss” measurement objective for the recognition of credit losses for loans, held-to-maturity debt securities and other receivables at the time the financial asset is originated or acquired. The expected credit losses are subsequently adjusted each period for changes in expected lifetime credit losses. This methodology replaced multiple existing impairment methods under previous GAAP for these types of assets, which generally required that a loss be incurred before it was recognized. The Partnership adopted this update on January 1, 2020 with a modified-retrospective approach, whereby a cumulative-effect adjustment was made to reduce partner's equity on January 1, 2020 without any retroactive application to prior periods. The Partnership's net investments in direct financing and sales-type leases, advances to equity-accounted joint ventures, guarantees of indebtedness of equity-accounted joint ventures and receivables related to non-operating lease revenue arrangements are subject to ASU 2016-13. On adoption, the Partnership decreased the carrying value of partners' equity by $50.8 million , investments in and advances to equity-accounted joint ventures by $40.0 million , net investments in direct financing and sales-type leases by $11.2 million and non-controlling interest by $2.5 million , and increased its other long-term liabilities by $2.1 million . The cumulative adjustment recorded on initial adoption of this update does not reflect an increase in credit risk exposure to the Partnership compared to previous periods presented. In December 2019, the FASB issued ASU 2019-12 - Income Taxes (Topic 740) Simplifying the Accounting for Income Taxes (or ASU 2019-12 ), as part of its initiative to reduce complexity in the accounting standards. The amendments in ASU 2019-12 eliminate certain exceptions related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences, among other changes. The guidance becomes effective for annual reporting periods beginning after December 15, 2020 and interim periods within those fiscal years with early adoption permitted, including adoption in any interim period. The Partnership is currently evaluating the effect of adopting this new guidance. In March 2020, the FASB issued ASU 2020-04 - Reference Rate Reform (Topic 848) Facilitation of the Effects of Reference Rate Reform on Financial Reporting (or ASU 2020-04 ). This ASU provides optional guidance for a limited period of time to ease potential accounting impacts associated with transitioning away from reference rates that are expected to be discontinued, such as the London Interbank Offered Rate (or "LIBOR" ). This ASU applies only to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued. This ASU is effective through December 31, 2022. The Partnership is currently evaluating the effect of adopting this new guidance.

Financial Instruments (Tables)

Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2020
Fair Value Disclosures [Abstract]
Schedule of Estimated Fair Value and Carrying Value of Partnership's Financial Instruments on Recurring and Non-Recurring Basis	The following table includes the estimated fair value and carrying value of those assets and liabilities that are measured at fair value on a recurring and non-recurring basis, as well as the estimated fair value of the Partnership’s financial instruments that are not accounted for at fair value on a recurring basis. June 30, 2020 December 31, 2019 Fair Value Hierarchy Level Carrying Amount Asset (Liability) $ Fair Value Asset (Liability) $ Carrying Amount Asset (Liability) $ Fair Value Asset (Liability) $ Recurring: Cash and cash equivalents and restricted cash (note 16a) Level 1 292,475 292,475 253,291 253,291 Derivative instruments (note 11) Interest rate swap agreements – assets Level 2 — — 2,210 2,210 Interest rate swap agreements – liabilities Level 2 (81,488 ) (81,488 ) (50,447 ) (50,447 ) Foreign currency contracts Level 2 — — (202 ) (202 ) Cross currency swap agreements – liabilities Level 2 (46,179 ) (46,179 ) (42,104 ) (42,104 ) Other: Loans to equity-accounted joint ventures (note 7) (i) 125,641 (i) 126,546 (i) Long-term debt – public (note 8) Level 1 (212,088 ) (212,749 ) (345,824 ) (358,005 ) Long-term debt – non-public (note 8) Level 2 (1,346,396 ) (1,348,032 ) (1,485,572 ) (1,474,208 ) Obligations related to finance leases (note 5a) Level 2 (1,376,011 ) (1,475,031 ) (1,410,904 ) (1,434,910 ) (i) The advances to equity-accounted joint ventures together with the Partnership’s equity investments in the joint ventures form the net aggregate carrying value of the Partnership’s interests in the joint ventures in these unaudited consolidated financial statements. The fair values of the individual components of such aggregate interests are not determinable.
Summary of Partnership's Financing receivables and Direct financing leases	The following table includes the amortized cost basis of the Partnership’s direct interests in financing receivables and net investment in direct financing leases by class of financing receivables and by period of origination and their associated credit quality. Amortized Cost Basis by Origination Year Credit Quality Grade (1) 2018 2016 Prior to 2016 Total As at June 30, 2020 $ $ $ $ Direct financing leases Tangguh Hiri and Tangguh Sago Performing — — 338,305 338,305 Bahrain Spirit Performing 213,041 — — 213,041 213,041 — 338,305 551,346 Loans to equity-accounted joint ventures Exmar LPG Joint Venture Performing — — 52,266 52,266 Bahrain LNG Joint Venture Performing — 73,375 — 73,375 — 73,375 52,266 125,641 213,041 73,375 390,571 676,987
Financing Receivable, Allowance for Credit Loss	Changes in the Partnership's allowance for credit losses for the three and six months ended June 30, 2020 are as follows: Direct financing leases (1) $ Direct financing and sales-type leases and other within equity-accounted joint ventures (1) $ Loans to equity-accounted joint ventures (2) $ Guarantees of debt (3) $ Total $ As at January 1, 2020 11,155 36,292 3,714 2,139 53,300 Provision for expected credit losses (100 ) 8,980 — — 8,880 As at March 31, 2020 11,055 45,272 3,714 2,139 62,180 Provision for expected credit losses 465 (423 ) 83 (288 ) (163 ) As at June 30, 2020 11,520 44,849 3,797 1,851 62,017

Segment Reporting (Tables)

Segment Reporting (Tables)	6 Months Ended
	Jun. 30, 2020
Segment Reporting [Abstract]
Segment Reporting Information	The following tables include results for the Partnership’s segments for the periods presented in these unaudited consolidated financial statements. Three Months Ended June 30, 2020 Liquefied Natural Gas Segment $ Liquefied Petroleum Gas Segment $ Conventional Tanker Segment $ Total $ Voyage revenues 137,822 10,383 — 148,205 Voyage expenses (806 ) (4,523 ) — (5,329 ) Vessel operating expenses (24,599 ) (3,808 ) — (28,407 ) Time-charter hire expenses (5,368 ) — — (5,368 ) Depreciation and amortization (30,566 ) (1,063 ) — (31,629 ) General and administrative expenses (i) (7,251 ) (632 ) — (7,883 ) Income from vessel operations 69,232 357 — 69,589 Equity income 27,795 4,360 — 32,155 Three Months Ended June 30, 2019 Liquefied Natural Gas Segment $ Liquefied Petroleum Gas Segment $ Conventional Tanker Segment $ Total $ Voyage revenues 141,833 8,858 2,369 153,060 Voyage (expenses) recoveries (3,484 ) (2,542 ) 3 (6,023 ) Vessel operating expenses (23,146 ) (3,630 ) (681 ) (27,457 ) Time-charter hire expenses (3,080 ) — — (3,080 ) Depreciation and amortization (33,139 ) (2,030 ) (169 ) (35,338 ) General and administrative expenses (i) (5,051 ) (345 ) (271 ) (5,667 ) Restructuring charges — — (818 ) (818 ) Income from vessel operations 73,933 311 433 74,677 Equity income (loss) 3,377 (1,639 ) — 1,738 Six Months Ended June 30, 2020 Liquefied Natural Gas Segment $ Liquefied Petroleum Gas Segment $ Conventional Tanker Segment $ Total $ Voyage revenues 270,392 17,700 — 288,092 Voyage expenses (1,835 ) (5,811 ) — (7,646 ) Vessel operating expenses (46,691 ) (7,820 ) — (54,511 ) Time-charter hire expenses (11,290 ) — — (11,290 ) Depreciation and amortization (61,158 ) (3,110 ) — (64,268 ) General and administrative expenses (i) (13,004 ) (1,046 ) — (14,050 ) Write-down of vessels — (45,000 ) — (45,000 ) Income (loss) from vessel operations 136,414 (45,087 ) — 91,327 Equity income 27,977 4,551 — 32,528 Six Months Ended June 30, 2019 Liquefied Natural Gas Segment $ Liquefied Petroleum Gas Segment $ Conventional Tanker Segment $ Total $ Voyage revenues 279,655 18,018 5,131 302,804 Voyage (expenses) recoveries (4,722 ) (7,212 ) 136 (11,798 ) Vessel operating expenses (43,701 ) (7,982 ) (1,875 ) (53,558 ) Time-charter hire expenses (8,671 ) — — (8,671 ) Depreciation and amortization (64,825 ) (3,951 ) (688 ) (69,464 ) General and administrative expenses (i) (11,014 ) (908 ) (377 ) (12,299 ) Restructuring charges — — (2,976 ) (2,976 ) Income (loss) from vessel operations 146,722 (2,035 ) (649 ) 144,038 Equity income (loss) 10,870 (3,554 ) — 7,316 (i) Includes direct general and administrative expenses and indirect general and administrative expenses (allocated to each segment based on estimated use of corporate resources).
Reconciliation of Total Segment Assets	A reconciliation of total segment assets to total assets presented in the consolidated balance sheets is as follows: June 30, 2020 December 31, 2019 $ $ Total assets of the liquefied natural gas segment 4,482,374 4,924,627 Total assets of the liquefied petroleum gas segment 277,349 319,695 Unallocated: Cash and cash equivalents 226,328 160,221 Advances to affiliates 3,025 5,143 Consolidated total assets 4,989,076 5,409,686

Chartered-in Vessels (Tables)

Chartered-in Vessels (Tables)	6 Months Ended
	Jun. 30, 2020
Leases [Abstract]
Obligations related to Finance Leases	a) Obligations related to Finance Leases June 30, December 31, Total obligations related to finance leases 1,376,011 1,410,904 Less current portion (70,955 ) (69,982 ) Long-term obligations related to finance leases 1,305,056 1,340,922
Commitments related to Finance Leases	As at June 30, 2020 , the remaining commitments related to the financial liabilities of these nine LNG carriers including the amounts to be paid for the related purchase obligations, approximated $1.8 billion , including imputed interest of $435.3 million , repayable through 2034, as indicated below: Commitments as at Year June 30, 2020 Remainder of 2020 $ 69,886 2021 $ 138,601 2022 $ 136,959 2023 $ 135,459 2024 $ 132,011 Thereafter $ 1,198,366

Revenue (Tables)

Revenue (Tables)	6 Months Ended
	Jun. 30, 2020
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following tables contain the Partnership’s total revenue for the three and six months ended June 30, 2020 and 2019 , by contract type and by segment. Three Months Ended June 30, 2020 Liquefied Natural Gas Segment $ Liquefied Petroleum Gas Segment $ Conventional Tanker Segment $ Total $ Time charters 135,761 — — 135,761 Voyage charters — 10,383 — 10,383 Management fees and other income 2,061 — — 2,061 137,822 10,383 — 148,205 Three Months Ended June 30, 2019 Liquefied Natural Gas Segment $ Liquefied Petroleum Gas Segment $ Conventional Tanker Segment $ Total $ Time charters 133,684 — 2,369 136,053 Voyage charters — 8,858 — 8,858 Bareboat charters 6,129 — — 6,129 Management fees and other income 2,020 — — 2,020 141,833 8,858 2,369 153,060 Six Months Ended June 30, 2020 Liquefied Natural Gas Segment $ Liquefied Petroleum Gas Segment $ Conventional Tanker Segment $ Total $ Time charters 266,306 — — 266,306 Voyage charters — 17,700 — 17,700 Management fees and other income 4,086 — — 4,086 270,392 17,700 — 288,092 Six Months Ended June 30, 2019 Liquefied Natural Gas Segment $ Liquefied Petroleum Gas Segment $ Conventional Tanker Segment $ Total $ Time charters 264,459 — 5,131 269,590 Voyage charters — 18,018 — 18,018 Bareboat charters 12,191 — — 12,191 Management fees and other income 3,005 — — 3,005 279,655 18,018 5,131 302,804 The following table contains the Partnership’s total revenue for the three and six months ended June 30, 2020 and 2019, by contracts or components of contracts accounted for as leases and those not accounted for as leases: Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 $ $ $ $ Lease revenue Lease revenue from lease payments of operating leases 127,289 131,062 246,888 260,822 Interest income on lease receivables 12,595 12,969 25,261 25,763 Variable lease payments - cost reimbursements (1) 1,263 1,295 2,320 1,975 141,147 145,326 274,469 288,560 Non-lease revenue Non-lease revenue - related to sales-type or direct financing leases 4,997 5,714 9,537 11,239 Management fees and other income 2,061 2,020 4,086 3,005 7,058 7,734 13,623 14,244 Total 148,205 153,060 288,092 302,804 (1) Reimbursements for vessel operating expenditures and dry-docking expenditures received from the Partnership's customers relating to such costs incurred by the Partnership to operate the vessel for the customer pursuant to charters accounted for as operating leases.

Long-Term Debt (Tables)

Long-Term Debt (Tables)	6 Months Ended
	Jun. 30, 2020
Debt Disclosure [Abstract]
Components of Long-Term Debt	June 30, 2020 December 31, 2019 $ $ U.S. Dollar-denominated Revolving Credit Facilities due in 2022 286,594 212,000 U.S. Dollar-denominated Term Loans and Bonds due from 2020 to 2030 916,079 1,114,707 Norwegian Krone-denominated Bonds due from 2021 to 2023 212,985 347,163 Euro-denominated Term Loans due from 2023 to 2024 153,200 165,376 Other U.S. Dollar-denominated Loans 446 3,300 Total principal 1,569,304 1,842,546 Unamortized discount and debt issuance costs (10,820 ) (11,150 ) Total debt 1,558,484 1,831,396 Less current portion (295,282 ) (393,065 ) Long-term debt 1,263,202 1,438,331

Income Tax (Tables)

Income Tax (Tables)	6 Months Ended
	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Components of Provision for Income Taxes	The components of the provision for income taxes were as follows: Three Months Ended June 30, Six months ended June 30, 2020 2019 2020 2019 $ $ $ $ Current 1,131 (1,603 ) (1,381 ) (4,035 ) Deferred 673 (146 ) 673 (292 ) Income tax recovery (expense) 1,804 (1,749 ) (708 ) (4,327 )

Related Party Transactions (Tab

Related Party Transactions (Tables)	6 Months Ended
	Jun. 30, 2020
Related Party Transactions [Abstract]
Schedule of Related Party Transactions	a) The following table and related footnotes provide information about certain of the Partnership's related party transactions for the periods indicated: Three Months Ended June 30, Six months ended June 30, 2020 2019 2020 2019 $ $ $ $ Voyage revenues (i)(iii) 9,200 12,233 18,177 20,794 Vessel operating expenses (i)(ii) (1,337 ) (2,452 ) (2,733 ) (5,267 ) Time-charter hire expenses (iii) (5,368 ) (3,080 ) (11,290 ) (8,671 ) General and administrative expenses (iv) (3,787 ) (4,170 ) (7,585 ) (8,324 ) Equity income (v) 603 238 1,206 442 (i) In September 2018, the Partnership’s FSU, the Bahrain Spirit , commenced its 21 -year charter contract with the Bahrain LNG Joint Venture. Voyage revenues from the charter of Bahrain Spirit to the Bahrain LNG Joint Venture for the three and six months ended June 30, 2020 amounted to $7.2 million and $14.1 million , respectively ( $7.7 million and $15.3 million for the three and six months ended June 30, 2019, respectively). In addition, the Partnership has an operation and maintenance contract with the Bahrain LNG Joint Venture and had an operating and maintenance subcontract with Teekay Marine Solutions (Bermuda) Ltd. (or TMS ), an entity wholly-owned by Teekay Tankers Ltd., which is controlled by Teekay Corporation, relating to the LNG regasification terminal in Bahrain. The contract with TMS was terminated in August 2019 and such services are currently managed by the Partnership. The subcontractor fees from TMS for the three and six months ended June 30, 2019 of $1.0 million and $2.0 million , respectively, are included in vessel operating expenses in the Partnership's consolidated statements of income. Fees received in relation to the operation and maintenance contract from the Bahrain LNG Joint Venture for the three and six months ended June 30, 2020 were $2.0 million and $4.1 million , respectively ( $2.0 million and $3.0 million for the three and six months ended June 30, 2019, respectively) and are included in voyage revenues in the Partnership's consolidated statements of income. (ii) The Partnership and certain of its operating subsidiaries have entered into service agreements with certain subsidiaries of Teekay Corporation pursuant to which the Teekay Corporation subsidiaries provide to the Partnership and its subsidiaries crew training and technical management services. In addition, as part of the Partnership's acquisition of its ownership interest in the Pan Union Joint Venture in 2014, the Partnership entered into an agreement with a subsidiary of Teekay Corporation whereby Teekay Corporation's subsidiary provided, on behalf of the Partnership, shipbuilding supervision and crew training services for four LNG carrier newbuildings in the Pan Union Joint Venture, up to their delivery dates from 2017 to 2019. All costs incurred by these Teekay Corporation subsidiaries related to these services are charged to the Partnership and recorded as part of vessel operating expenses. (iii) Commencing in September 2018, the Partnership entered into an agreement with the MALT Joint Venture to charter in one of the MALT Joint Venture's LNG carriers, the Magellan Spirit (see Note 5b). The time-charter hire expenses charged for the three and six months ended June 30, 2020 were $5.4 million and $11.3 million , respectively ( $3.1 million and $8.7 million for the three and six months ended June 30, 2019, respectively). In addition, in May 2019, the Partnership entered into an agreement with a subsidiary of Teekay Corporation to charter the Magellan Spirit until October 31, 2019. The Partnership recognized revenue of $2.5 million for the three and six months ended June 30, 2019 from this charter to Teekay Corporation. (iv) Includes administrative, advisory, business development, commercial and strategic consulting services charged by Teekay Corporation and reimbursements to Teekay Corporation and the Partnership's General Partner for costs incurred on the Partnership's behalf for the conduct of the Partnership's business. (v) During the three and six months ended June 30, 2020, the Partnership charged fees of $0.6 million and $1.2 million , respectively ( $0.2 million and $0.4 million for the three and six months ended June 30, 2019, respectively) to the Yamal LNG Joint Venture relating to the successful bid process for the construction and chartering of six ARC7 LNG carriers. The fees are reflected in equity income in the Partnership’s consolidated statements of income.

Derivative Instruments and He_2

Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities (Tables)	6 Months Ended
	Jun. 30, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Cross Currency Swap Agreements	Foreign Exchange Risk From time to time, the Partnership economically hedges portions of its forecasted expenditures denominated in foreign currencies with foreign currency forward contracts. As at June 30, 2020 , the Partnership was not committed to any foreign currency forward contracts. The Partnership entered into cross currency swaps concurrently with the issuance of its NOK-denominated senior unsecured bonds (see Note 8), and pursuant to these swaps, the Partnership receives the principal amount in NOK on maturity dates of the swaps in exchange for payments of a fixed U.S. Dollar amount. In addition, the cross currency swaps exchange a receipt of floating interest in NOK based on NIBOR plus a margin for a payment of U.S. Dollar fixed interest. The purpose of the cross currency swaps is to economically hedge the foreign currency exposure on the payment of interest and principal of the Partnership’s NOK-denominated bonds due in 2021 and 2023, and to economically hedge the interest rate exposure. The following table reflects information relating to the cross currency swaps as at June 30, 2020 . Floating Rate Receivable Principal Amount NOK (in thousands) Principal Amount $ Reference Rate Margin Fixed Rate Payable Fair Value / Carrying Amount of Asset (Liability) $ Weighted- Average Remaining Term (Years) 1,200,000 146,500 NIBOR 6.00 % 7.72 % (24,681 ) 1.3 850,000 102,000 NIBOR 4.60 % 7.89 % (21,498 ) 3.2 (46,179 )
Interest Rate Swap Agreements	As at June 30, 2020 , the Partnership was committed to the following interest rate swap agreements: Interest Rate Index Principal Amount $ Fair Value / Carrying Amount of Asset (Liability) $ Weighted- Average Remaining Term (years) Fixed Swap Rate (i) LIBOR-Based Debt: U.S. Dollar-denominated interest rate swaps (ii) LIBOR 112,500 (22,910 ) 8.5 5.2% U.S. Dollar-denominated interest rate swaps (ii) LIBOR 16,067 (278 ) 1.1 2.8% U.S. Dollar-denominated interest rate swaps (iii) (iv) LIBOR 150,256 (6,562 ) 4.2 1.4% U.S. Dollar-denominated interest rate swaps (iii) (iv) LIBOR 307,632 (30,170 ) 2.0 3.5% U.S. Dollar-denominated interest rate swaps (iv) LIBOR 166,376 (14,601 ) 6.5 2.3% EURIBOR-Based Debt: Euro-denominated interest rate swaps EURIBOR 70,220 (6,967 ) 3.2 3.9% (81,488 ) (i) Excludes the margins the Partnership pays on its floating-rate term loans, which, at June 30, 2020 , ranged from 0.30% to 3.25% . (ii) Principal amount reduces semi-annually. (iii) These interest rate swaps are subject to mandatory early termination in 2021 and 2024 whereby the swaps will be settled based on their fair value at that time. (iv) Principal amount reduces quarterly.
Classification and Fair Value Amounts of Derivative Instruments	The following table presents the classification and fair value amounts of derivative instruments, segregated by type of contract, on the Partnership’s consolidated balance sheets. Accounts receivable $ Current portion of derivative assets $ Derivative assets $ Accrued liabilities $ Current portion of derivative liabilities $ Derivative liabilities $ As at June 30, 2020 Derivatives designated as a cash flow hedge: Interest rate swap agreements — — — (63 ) (3,085 ) (11,453 ) Derivatives not designated as a cash flow hedge: Interest rate swap agreements — — — (3,399 ) (25,917 ) (37,571 ) Cross currency swap agreements — — — (872 ) (5,995 ) (39,312 ) — — — (4,334 ) (34,997 ) (88,336 ) As at December 31, 2019 Derivatives designated as a cash flow hedge: Interest rate swap agreements — — — (12 ) (837 ) (3,475 ) Derivatives not designated as a cash flow hedge: Interest rate swap agreements 21 355 1,834 (2,821 ) (14,758 ) (28,544 ) Foreign currency forward contracts — — — — (202 ) — Cross currency swap agreements — — — (456 ) (22,661 ) (18,987 ) 21 355 1,834 (3,289 ) (38,458 ) (51,006 )
Gain (Loss) for Derivative Instruments Not Designated or Qualifying as Hedging Instruments	The effect of the gain (loss) on these derivatives on the Partnership's consolidated statements of income is as follows: Three Months Ended June 30, 2020 2019 Realized gains (losses) Unrealized gains (losses) Total Realized gains (losses) Unrealized gains (losses) Total $ $ $ $ $ $ Cross currency swap agreements (1,430 ) 45,881 44,451 (1,087 ) (139 ) (1,226 ) Cross currency swap agreements maturity (33,844 ) — (33,844 ) — — — (35,274 ) 45,881 10,607 (1,087 ) (139 ) (1,226 ) Six Months Ended June 30, 2020 2019 Realized gains (losses) Unrealized gains (losses) Total Realized gains (losses) Unrealized gains (losses) Total $ $ $ $ $ $ Cross currency swap agreements (3,247 ) (3,659 ) (6,906 ) (2,521 ) (2,059 ) (4,580 ) Cross currency swap agreements maturity (33,844 ) — — (33,844 ) — — — (37,091 ) (3,659 ) (40,750 ) (2,521 ) (2,059 ) (4,580 ) Three Months Ended June 30, 2020 2019 Realized gains (losses) Unrealized gains (losses) Total Realized gains (losses) Unrealized gains (losses) Total $ $ $ $ $ $ Interest rate swap agreements (3,662 ) (4,854 ) (8,516 ) (2,392 ) (5,333 ) (7,725 ) Foreign currency forward contracts — — — — (101 ) (101 ) (3,662 ) (4,854 ) (8,516 ) (2,392 ) (5,434 ) (7,826 ) Six Months Ended June 30, 2020 2019 Realized gains (losses) Unrealized gains (losses) Total Realized gains (losses) Unrealized gains (losses) Total $ $ $ $ $ $ Interest rate swap agreements (6,573 ) (22,375 ) (28,948 ) (4,777 ) (9,525 ) (14,302 ) Foreign currency forward contracts (241 ) 202 (39 ) — (101 ) (101 ) Toledo Spirit time-charter derivative — — — — (40 ) (40 ) (6,814 ) (22,173 ) (28,987 ) (4,777 ) (9,666 ) (14,443 )
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss)	The following table excludes any interest rate swap agreements designated and qualifying as cash flow hedges in the Partnership’s equity-accounted joint ventures. Three Months Ended June 30, 2020 Three Months Ended June 30, 2019 Amount of Loss Recognized in OCI $ Amount of Loss Reclassified from Accumulated OCI to Interest Expense $ Amount of Loss Recognized in OCI $ Amount of Gain Reclassified from Accumulated OCI to Interest Expense $ (1,055 ) (482 ) (4,570 ) 157 Six Months Ended June 30, 2020 Six Months Ended June 30, 2019 Amount of Loss Recognized in OCI $ Amount of Loss Reclassified from Accumulated OCI to Interest Expense $ Amount of Loss Recognized in OCI $ Amount of Gain Reclassified from Accumulated OCI to Interest Expense $ (10,226 ) (634 ) (7,402 ) 408

Commitments and Contingencies C

Commitments and Contingencies Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2020
Commitments and Contingencies Disclosure [Abstract]
Unrecorded Unconditional Purchase Obligations Disclosure	The Partnership’s share of commitments to fund equipment installation and other construction contract costs as at June 30, 2020 are as follows: Total Remainder of 2021 2022 Certain consolidated LNG carriers (i) 41,626 4,058 22,917 14,651 Bahrain LNG Joint Venture (ii) 11,351 11,351 — — 52,977 15,409 22,917 14,651 (i) In June 2019, the Partnership entered into an agreement with a contractor to supply equipment on certain of the Partnership's LNG carriers in 2021 and 2022, for an estimated installed cost of $58.1 million . As at June 30, 2020 , the estimated remaining cost of this installation was $41.6 million . (ii) The Partnership has a 30% ownership interest in the Bahrain LNG Joint Venture which has an LNG receiving and regasification terminal in Bahrain. As at June 30, 2020 , the Partnership's proportionate share of the estimated remaining cost of $11.4 million relates to the final construction installment on the LNG terminal. The Bahrain LNG Joint Venture has remaining debt financing of $24 million , which is undrawn, of which $7 million relates to the Partnership's proportionate share of the construction commitments included in the table above.

Total Capital and Net Income _2

Total Capital and Net Income Per Unit Total Capital and Net Income Per Unit (Tables)	6 Months Ended
	Jun. 30, 2020
Equity [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	Three Months Ended June 30, 2020 2019 $ $ Limited partners' interest in net income for basic net income per common unit 37,796 9,810 Weighted average number of common units 82,197,665 78,603,636 Dilutive effect of unit-based compensation 64,570 81,901 Weighted average number of common units and common unit equivalents 82,262,235 78,685,537 Limited partner's interest in net income per common unit: Basic 0.46 0.12 Diluted 0.46 0.12 Six Months Ended June 30, 2020 2019 $ $ Limited partners' interest in net (loss) income for basic net (loss) income per common unit (834 ) 24,698 Weighted average number of common units 79,629,623 78,600,342 Dilutive effect of unit-based compensation — 81,921 Weighted average number of common units and common unit equivalents 79,629,623 78,682,263 Limited partner's interest in net (loss) income per common unit: Basic (0.01 ) 0.31 Diluted (0.01 ) 0.31

Supplemental Cash Flow Inform_2

Supplemental Cash Flow Information Schedule (Tables)	6 Months Ended
	Jun. 30, 2020
Supplemental Cash Flow Elements [Abstract]
Schedule of Cash Flow, Supplemental Disclosures	The following is a tabular reconciliation of the Partnership's cash, cash equivalents and restricted cash balances for the periods presented in the Partnership's consolidated statements of cash flows. June 30, 2020 December 31, 2019 June 30, 2019 December 31, 2018 $ $ $ $ Cash and cash equivalents 226,328 160,221 124,880 149,014 Restricted cash – current 11,544 53,689 48,869 38,329 Restricted cash – long-term 54,603 39,381 31,439 35,521 292,475 253,291 205,188 222,864 The Partnership maintains restricted cash deposits relating to certain term loans, collateral for cross currency swaps (see Note 11), performance bond collateral and amounts received from charterers to be used only for dry-docking expenditures and emergency repairs. b)

Basis of Presentation Narrative

Basis of Presentation Narrative (Details) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2019USD ($)	Jun. 30, 2019USD ($)	Mar. 31, 2020vessel
LPG Carriers [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Number Of Vessels | vessel			6
Other Expense [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Prior Period Adjustment	$ 0.7	$ 0.7
Nonoperating Income (Expense) [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Prior Period Adjustment	$ (0.7)	$ (0.7)

Accounting Pronouncements Narra

Accounting Pronouncements Narrative (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jan. 01, 2020	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Partners' equity	$ (1,662,404)		$ (1,821,686)
Investments in and advances to equity-accounted joint ventures	(1,082,346)		(1,155,316)
Non-controlling interest	56,083		55,289
Other long-term liabilities	$ 52,635		$ 49,182
Accounting Standards Update 2016-13 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Partners' equity		$ 50,800
Investments in and advances to equity-accounted joint ventures		40,000
Net Investment in Direct Financing and Sales Type Leases		11,200
Non-controlling interest		(2,500)
Other long-term liabilities		$ 2,100

Financial Instruments - Schedul

Financial Instruments - Schedule of Estimated Fair Value and Carrying Value of Partnership's Financial Instruments on Recurring and Non-Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents and restricted cash (note 16a)	$ 292,475	$ 253,291	$ 205,188	$ 222,864	$ 205,188
Long-term debt	(1,558,484)	(1,831,396)
Obligations related to finance leases (note 5a)	1,376,011	1,410,904
Carrying Amount Asset (Liability)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans to equity-accounted joint ventures (note 7)	125,641	126,546
Carrying Amount Asset (Liability) | Level 1 | Public
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	(212,088)	(345,824)
Carrying Amount Asset (Liability) | Level 1 | Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents and restricted cash (note 16a)	292,475	253,291
Carrying Amount Asset (Liability) | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Obligations related to finance leases (note 5a)	1,376,011	1,410,904
Carrying Amount Asset (Liability) | Level 2 | Non-public
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	(1,346,396)	(1,485,572)
Carrying Amount Asset (Liability) | Level 2 | Recurring | Interest rate swap agreements
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap agreements – assets	0	2,210
Interest rate swap agreements – liabilities	(81,488)	(50,447)
Carrying Amount Asset (Liability) | Level 2 | Recurring | Cross-currency swap agreements
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cross currency swap agreements – liabilities	(46,179)	(42,104)
Carrying Amount Asset (Liability) | Level 2 | Recurring | Foreign Exchange Contract [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign Currency Contracts	0	(202)
Fair Value Asset (Liability) | Level 1 | Public
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	(212,749)	(358,005)
Fair Value Asset (Liability) | Level 1 | Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents and restricted cash (note 16a)	292,475	253,291
Fair Value Asset (Liability) | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Obligations related to finance leases (note 5a)	1,475,031	1,434,910
Fair Value Asset (Liability) | Level 2 | Non-public
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	(1,348,032)	(1,474,208)
Fair Value Asset (Liability) | Level 2 | Recurring | Interest rate swap agreements
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap agreements – assets	0	2,210
Interest rate swap agreements – liabilities	(81,488)	(50,447)
Fair Value Asset (Liability) | Level 2 | Recurring | Cross-currency swap agreements
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cross currency swap agreements – liabilities	(46,179)	(42,104)
Fair Value Asset (Liability) | Level 2 | Recurring | Foreign Exchange Contract [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign Currency Contracts	$ 0	$ (202)

Financial Instruments - Credit

Financial Instruments - Credit Losses Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020USD ($)	Mar. 31, 2020USD ($)	Jun. 30, 2020USD ($)projects	Jun. 30, 2020loan	Jun. 30, 2020equityaccountedjointventures	Jun. 30, 2020vessel	Jun. 30, 2020	Jun. 30, 2020projects	Jun. 30, 2020lease	Jan. 01, 2020projects
Financing Receivable, Allowance for Credit Loss [Line Items]
Number of loans to equity-accounted joint ventures | loan				2
Number of direct financing and sales-type leases | lease									3
Number of equity-accounted joint ventures					5		5
Number of LNG project counterparties | projects			2
Number of LNG projects | projects								2		2
Net Investment in Lease, Allowance for Credit Loss | $	$ 465	$ (100)
LNG Carriers [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Number Of Vessels | lease									9
LNG Carriers [Member] | Sales-Type or Direct Financing [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Number Of Vessels | vessel						18
Bahrain Spirit [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Number Of Vessels							1
Lessor, Direct financing lease, Term of contract	21 years		21 years
Bahrain LNG Joint Venture [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Number of LNG projects | projects								1		1
Lessor, Direct financing lease, Term of contract	20 years		20 years
Equity Method Investments [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Net Investment in Lease, Allowance for Credit Loss | $	$ (423)	$ 8,980	$ 8,600
Loans and Finance Receivables [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Provision for Loan, Lease, and Other Losses | $	$ 300		$ 200

Financial Instruments - Summary

Financial Instruments - Summary of Partnership's Financing receivables and Direct financing leases (Details) $ in Thousands	Jun. 30, 2020USD ($)
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated Two Years before Latest Fiscal Year	$ 213,041
Financing Receivable, Originated Four Years before Latest Fiscal Year	73,375
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	390,571
Financing Receivable, before Allowance for Credit Loss	676,987
Loans Receivable [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	73,375
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	52,266
Financing Receivable, before Allowance for Credit Loss	125,641
Loans Receivable [Member] | Exmar Lpg Bvba [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	52,266
Financing Receivable, before Allowance for Credit Loss	52,266
Loans Receivable [Member] | Bahrain LNG Joint Venture [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	73,375
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, before Allowance for Credit Loss	73,375
Sales-Type or Direct Financing [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Originated Two Years before Latest Fiscal Year	213,041
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	338,305
Financing Receivable, before Allowance for Credit Loss	551,346
Sales-Type or Direct Financing [Member] | Teekay Tangguh Joint Venture [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Net Investment in Lease, Originated Two Years before Latest Fiscal Year	0
Net Investment in Lease, Originated Four Years before Latest Fiscal Year	0
Net Investment in Lease, Originated Five or More Years before Latest Fiscal Year	338,305
Financing Receivable, before Allowance for Credit Loss	338,305
Sales-Type or Direct Financing [Member] | Bahrain LNG Joint Venture [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Net Investment in Lease, Originated Two Years before Latest Fiscal Year	213,041
Net Investment in Lease, Originated Four Years before Latest Fiscal Year	0
Net Investment in Lease, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, before Allowance for Credit Loss	$ 213,041

Financial Instruments Financial

Financial Instruments Financial Instruments - Financing Receivables, allowance for credit losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2020	Jan. 01, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Net Investment in Lease, Allowance for Credit Loss	$ 11,520	$ 11,055	$ 11,520	$ 11,155
Net Investment in Lease, Credit Loss Expense (Reversal)	465	(100)
Financing Receivable, Credit Loss, Expense (Reversal)	163	8,880
Financing Receivable, Allowance for Credit Loss	62,017	62,180	62,017	53,300
Financial Guarantee [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Off-Balance Sheet, Credit Loss, Liability	1,851	2,139	1,851	2,139
Off-Balance Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal)	(288)	0
Loans Receivable [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans to equity-accounted joint ventures	3,797	3,714	3,797	3,714
Financing Receivable, Credit Loss, Expense (Reversal)	83	0
Equity Method Investments [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Net Investment in Lease, Allowance for Credit Loss	44,849	45,272	44,849	$ 36,292
Net Investment in Lease, Credit Loss Expense (Reversal)	$ (423)	$ 8,980	$ 8,600

Segment Reporting - Segment Rep

Segment Reporting - Segment Reporting Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2020USD ($)	Jun. 30, 2019USD ($)	Dec. 31, 2019
Segment Reporting Information [Line Items]
Voyage revenues	$ 148,205	$ 153,060	$ 288,092	$ 302,804
Voyage expenses	(5,329)	(6,023)	(7,646)	(11,798)
Vessel operating expenses	(28,407)	(27,457)	(54,511)	(53,558)
Time-charter hire expenses	(5,368)	(3,080)	(11,290)	(8,671)
Depreciation and amortization	(31,629)	(35,338)	(64,268)	(69,464)
General and administrative expenses	(7,883)	(5,667)	(14,050)	(12,299)
Write-down of vessels	0	0	(45,000)	0
Restructuring charges	0	(818)	0	(2,976)
Income (loss) from vessel operations	69,589	74,677	91,327	144,038
Equity income (loss)	32,155	1,738	32,528	7,316
Conventional Tanker Segment
Segment Reporting Information [Line Items]
Number Of Vessels.					2
Operating Segments
Segment Reporting Information [Line Items]
Voyage revenues	148,205	153,060	288,092	302,804
Voyage expenses	(5,329)	(6,023)	(7,646)	(11,798)
Vessel operating expenses	(28,407)	(27,457)	(54,511)	(53,558)
Time-charter hire expenses	(5,368)	(3,080)	(11,290)	(8,671)
Depreciation and amortization	(31,629)	(35,338)	(64,268)	(69,464)
General and administrative expenses	(7,883)	(5,667)	(14,050)	(12,299)
Write-down of vessels			(45,000)
Restructuring charges		(818)		(2,976)
Income (loss) from vessel operations	69,589	74,677	91,327	144,038
Equity income (loss)	32,155	1,738	32,528	7,316
Operating Segments | LNG Segment [Member]
Segment Reporting Information [Line Items]
Voyage revenues	137,822	141,833	270,392	279,655
Voyage expenses	(806)	(3,484)	(1,835)	(4,722)
Vessel operating expenses	(24,599)	(23,146)	(46,691)	(43,701)
Time-charter hire expenses	(5,368)	(3,080)	(11,290)	(8,671)
Depreciation and amortization	(30,566)	(33,139)	(61,158)	(64,825)
General and administrative expenses	(7,251)	(5,051)	(13,004)	(11,014)
Write-down of vessels			0
Restructuring charges		0		0
Income (loss) from vessel operations	69,232	73,933	136,414	146,722
Equity income (loss)	27,795	3,377	27,977	10,870
Operating Segments | LPG Segment [Member]
Segment Reporting Information [Line Items]
Voyage revenues	10,383	8,858	17,700	18,018
Voyage expenses	(4,523)	(2,542)	(5,811)	(7,212)
Vessel operating expenses	(3,808)	(3,630)	(7,820)	(7,982)
Time-charter hire expenses	0	0	0	0
Depreciation and amortization	(1,063)	(2,030)	(3,110)	(3,951)
General and administrative expenses	(632)	(345)	(1,046)	(908)
Write-down of vessels			(45,000)
Restructuring charges		0		0
Income (loss) from vessel operations	357	311	(45,087)	(2,035)
Equity income (loss)	4,360	(1,639)	4,551	(3,554)
Operating Segments | Conventional Tanker Segment
Segment Reporting Information [Line Items]
Voyage revenues	0	2,369	0	5,131
Voyage expenses	0	3	0	136
Vessel operating expenses	0	(681)	0	(1,875)
Time-charter hire expenses	0	0	0	0
Depreciation and amortization	0	(169)	0	(688)
General and administrative expenses	0	(271)	0	(377)
Write-down of vessels			0
Restructuring charges		(818)		(2,976)
Income (loss) from vessel operations	0	433	0	(649)
Equity income (loss)	$ 0	$ 0	$ 0	$ 0

Segment Reporting - Reconciliat

Segment Reporting - Reconciliation of Total Segment Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Total assets	$ 4,989,076	$ 5,409,686
Unallocated:
Cash and cash equivalents	226,328	160,221	$ 124,880	$ 149,014
Advances to affiliates	3,025	5,143
Operating Segments | LNG Segment [Member]
Segment Reporting Information [Line Items]
Total assets	4,482,374	4,924,627
Operating Segments | LPG Segment [Member]
Segment Reporting Information [Line Items]
Total assets	277,349	319,695
Cash and Cash Equivalents [Member] | Unallocated
Unallocated:
Cash and cash equivalents	226,328	160,221
Affiliated Entity [Member] | Unallocated
Unallocated:
Advances to affiliates	$ 3,025	$ 5,143

Chartered-in Vessels - Obligati

Chartered-in Vessels - Obligations related to Finance Leases (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Leases [Abstract]
Total Obligations related to finance leases	$ 1,376,011	$ 1,410,904
Current obligations related to finance leases (note 5a)	70,955	69,982
Long-term obligations related to finance leases	$ 1,305,056	$ 1,340,922

Chartered-in Vessels Chartered-

Chartered-in Vessels Chartered-in Vessels - Commitments Related to Finance Leases (Details) - LNG Carriers [Member] $ in Thousands	Jun. 30, 2020USD ($)lease
Obligations relating to Finance Leases [Line Items]
Number Of Vessels | lease	9
Finance Lease, Liability, Payment, Due	$ 1,800,000
Finance Lease, Interest Payment on Liability	435,300
Finance Lease, Liability, Payments, Remainder of Fiscal Year	69,886
Finance Lease, Liability, Payments, Due Year Two	138,601
Finance Lease, Liability, Payments, Due Year Three	136,959
Finance Lease, Liability, Payments, Due Year Four	135,459
Finance Lease, Liability, Payments, Due Year Five	132,011
Finance Lease, Liability, Payments, Due after Year Five	$ 1,198,366

Chartered-in Vessels - Operatin

Chartered-in Vessels - Operating Leases (Details) $ in Millions	Jun. 30, 2020USD ($)vessel
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year	$ 12
Lessee, Operating Lease, Liability, Payments, Due Year Three	11.1
Lessee, Operating Lease, Liability, Payments, Due Year Two	$ 23.7
Teekay Tangguh Joint Venture [Member]
Lessee, Lease, Description [Line Items]
Number Of Vessels | vessel	2
Teekay Lng Marubeni Joint Venture [Member]
Lessee, Lease, Description [Line Items]
Equity Method Investment, Ownership Percentage	52.00%

Chartered-in Vessels Obligation

Chartered-in Vessels Obligations related to Finance Leases - Additional Information (Details) - LNG Carriers [Member] - lease	6 Months Ended	36 Months Ended
	Jun. 30, 2020	Jan. 31, 2019
Obligations relating to Finance Leases [Line Items]
Number Of Vessels	9
Sale Leaseback Transaction, Imputed Interest Rate	5.10%
Minimum [Member]
Obligations relating to Finance Leases [Line Items]
Sale Leaseback Transaction, Lease Terms		P7Y6M
Maximum [Member]
Obligations relating to Finance Leases [Line Items]
Sale Leaseback Transaction, Lease Terms		P15Y

Revenue - Disaggregation (Detai

Revenue - Disaggregation (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Jan. 31, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Voyage revenues		$ 148,205	$ 153,060	$ 288,092	$ 302,804
Operating Segments
Segment Reporting Information [Line Items]
Voyage revenues		148,205	153,060	288,092	302,804
LNG Segment [Member] | Operating Segments
Segment Reporting Information [Line Items]
Voyage revenues		137,822	141,833	270,392	279,655
LPG Segment [Member] | Operating Segments
Segment Reporting Information [Line Items]
Voyage revenues		10,383	8,858	17,700	18,018
Conventional Tanker Segment | Operating Segments
Segment Reporting Information [Line Items]
Voyage revenues		0	2,369	0	5,131
Time charters
Segment Reporting Information [Line Items]
Voyage revenues		135,761	136,053	266,306	269,590
Time charters | LNG Segment [Member] | Operating Segments
Segment Reporting Information [Line Items]
Voyage revenues		135,761	133,684	266,306	264,459
Time charters | LPG Segment [Member] | Operating Segments
Segment Reporting Information [Line Items]
Voyage revenues		0	0	0	0
Time charters | Conventional Tanker Segment | Operating Segments
Segment Reporting Information [Line Items]
Voyage revenues		0	2,369	0	5,131
Voyage charters
Segment Reporting Information [Line Items]
Voyage revenues		10,383	8,858	17,700	18,018
Voyage charters | LNG Segment [Member] | Operating Segments
Segment Reporting Information [Line Items]
Voyage revenues		0	0	0	0
Voyage charters | LPG Segment [Member] | Operating Segments
Segment Reporting Information [Line Items]
Voyage revenues		10,383	8,858	17,700	18,018
Voyage charters | Conventional Tanker Segment | Operating Segments
Segment Reporting Information [Line Items]
Voyage revenues		0	0	0	0
Bareboat charters
Segment Reporting Information [Line Items]
Voyage revenues			6,129		12,191
Bareboat charters | LNG Segment [Member] | Operating Segments
Segment Reporting Information [Line Items]
Voyage revenues			6,129		12,191
Bareboat charters | LPG Segment [Member] | Operating Segments
Segment Reporting Information [Line Items]
Voyage revenues			0		0
Bareboat charters | Conventional Tanker Segment | Operating Segments
Segment Reporting Information [Line Items]
Voyage revenues			0		0
Management fees and other
Segment Reporting Information [Line Items]
Voyage revenues		2,061	2,020	4,086	3,005
Management fees and other | LNG Segment [Member] | Operating Segments
Segment Reporting Information [Line Items]
Voyage revenues		2,061	2,020	4,086	3,005
Management fees and other | LPG Segment [Member] | Operating Segments
Segment Reporting Information [Line Items]
Voyage revenues		0	0	0	0
Management fees and other | Conventional Tanker Segment | Operating Segments
Segment Reporting Information [Line Items]
Voyage revenues		0	0	0	0
Non Lease Component [Member]
Segment Reporting Information [Line Items]
Voyage revenues		7,058	7,734	13,623	14,244
Non Lease Component [Member] | Non-lease revenue
Segment Reporting Information [Line Items]
Voyage revenues		4,997	5,714	9,537	11,239
Non Lease Component [Member] | Management fees and other
Segment Reporting Information [Line Items]
Voyage revenues		2,061	2,020	4,086	3,005
Lease Component [Member]
Segment Reporting Information [Line Items]
Operating Lease, Lease Income	$ 127,289		131,062	246,888	260,822
Sales-type Lease, Interest Income, Lease Receivable		12,595	12,969	25,261	25,763
Operating Lease, Variable Lease Income		1,263	1,295	2,320	1,975
Voyage revenues		$ 141,147	$ 145,326	$ 274,469	$ 288,560

Revenue - Net Investments in Di

Revenue - Net Investments in Direct Financing Leases (Details) $ in Millions	Jun. 30, 2020USD ($)lease	Jan. 07, 2020USD ($)lease	Dec. 31, 2019lease
Lessor, Lease, Description [Line Items]
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Remainder of Fiscal Year	$ 32.3
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Two Years	64.2
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Three Years	64.2
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Four Years	64
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Five Years	64.3
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Thereafter	$ 510.6
Purchase Obligation And Deferred Hire Amounts		$ 260
LNG Carriers [Member]
Lessor, Lease, Description [Line Items]
Number Of Vessels | lease	9
LNG Carriers [Member] | Direct Financing Lease [Member]
Lessor, Lease, Description [Line Items]
Number Of Vessels | lease	3
Awilco Lng Carrier
Lessor, Lease, Description [Line Items]
Number Of Vessels | lease		2	2

Revenue - Narrative (Details)

Revenue - Narrative (Details)	6 Months Ended
	Jun. 30, 2020contract
Leases [Abstract]
Number of Forms of Contracts	3

Revenue - Operating leases (Det

Revenue - Operating leases (Details) $ in Millions	Jun. 30, 2020USD ($)
Leases [Abstract]
Lessor, Operating Lease, Payments to be Received, Remainder of Fiscal Year	$ 267.7
Lessor, Operating Lease, Payments to be Received, Two Years	475.8
Lessor, Operating Lease, Payments to be Received, Three Years	371.7
Lessor, Operating Lease, Payments to be Received, Four Years	307
Lessor, Operating Lease, Payments to be Received, Five Years	$ 250.8

Revenue - Contract costs (Detai

Revenue - Contract costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Jan. 01, 2019
Contract with Customer, Asset and Liability [Abstract]
Contract with Customer, Liability	$ 26,400	$ 20,800	$ 26,400	$ 20,800	$ 24,900	$ 26,400
Contract with Customer, Liability	30,185		30,185		$ 28,759
Contract with Customer, Liability, Revenue Recognized	$ 22,000	$ 20,300	$ 24,900	$ 26,400

Equity-Accounted Joint Ventur_2

Equity-Accounted Joint Ventures Equity-Accounted Joint Ventures (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 1,400,000		$ 1,400,000
Bahrain LNG Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Advances to equity-accounted joint ventures, current and long-term (note 7)	$ 73,400		$ 73,400
Ownership percentage	30.00%		30.00%
Debt Instrument, Interest Rate During Period			6.00%
Interest receivable on advances to equity accounted joint ventures	$ 2,800		$ 2,800		$ 500
Interest Income, Related Party	$ 1,100	$ 900	$ 2,200	$ 1,800
Exmar LPG Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	50.00%		50.00%
Interest Income, Related Party	$ 300	$ 400	$ 600	$ 800
Exmar Lpg Bvba [Member]
Schedule of Equity Method Investments [Line Items]
Advances to equity-accounted joint ventures, current and long-term (note 7)	52,300		52,300
Interest receivable on advances to equity accounted joint ventures	$ 0		$ 0		$ 300
Exmar Lpg Bvba [Member] | LIBOR
Schedule of Equity Method Investments [Line Items]
Variable interest rate on debt			0.50%

Long-Term Debt - Components of

Long-Term Debt - Components of Long-Term Debt (Details) $ in Thousands, € in Millions	Jun. 30, 2020USD ($)	Jun. 30, 2020EUR (€)	Dec. 31, 2019USD ($)	Dec. 31, 2019EUR (€)
Debt Instrument [Line Items]
Total principal	$ 1,569,304		$ 1,842,546
Unamortized discount and debt issuance costs	(10,820)		(11,150)
Total debt	1,558,484		1,831,396
Less current portion	(295,282)		(393,065)
Long-term debt	1,263,202		1,438,331
U.S. Dollar-denominated Revolving Credit Facilities due in 2022
Debt Instrument [Line Items]
Total principal	286,594		212,000
U.S. Dollar-denominated Term Loans and Bonds due from 2020 to 2030
Debt Instrument [Line Items]
Total principal	916,079		1,114,707
Norwegian Krone-denominated Bonds due from 2021 to 2023
Debt Instrument [Line Items]
Total principal	212,985		347,163
Euro-denominated Term Loans due from 2023 to 2024
Debt Instrument [Line Items]
Total principal	153,200	€ 136.4	165,376	€ 147.5
Other U.S. Dollar-denominated Loans
Debt Instrument [Line Items]
Total principal	$ 446		$ 3,300

Long-Term Debt - Revolvers - Ad

Long-Term Debt - Revolvers - Additional Information (Details) $ in Millions	6 Months Ended
	Jun. 30, 2020USD ($)vesselsubsidiarycredit_facility	Dec. 31, 2019USD ($)
Debt Instrument [Line Items]
Line of credit facility, borrowing capacity, reduction for remainder of year	$ 61
Line of credit facility, borrowing capacity, reduction in year two	405.2
Line of credit facility, borrowing capacity, reduction in year three	$ 373.1
Minimum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt	0.30%
Maximum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt	3.25%
Unsecured Debt
Debt Instrument [Line Items]
Number of credit facilities | credit_facility	1
First-priority Mortgages
Debt Instrument [Line Items]
Number Of Vessels | vessel	2
Number of subsidiaries | subsidiary	2
Revolving Credit Facilities
Debt Instrument [Line Items]
Line of credit facility, borrowing capacity, reduction for remainder of year	$ 11.8
Line of credit facility, borrowing capacity, reduction in year two	24.4
Line of credit facility, borrowing capacity, reduction in year three	$ 330.4
Revolving Credit Facilities | Line of Credit
Debt Instrument [Line Items]
Number of credit facilities | credit_facility	2
Revolving Credit Facilities | Line of Credit
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 366.6	$ 378.2
Undrawn amount of revolving credit facilities	$ 80	$ 166.2
Revolving Credit Facilities | Line of Credit | LIBOR | Minimum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt	1.40%
Revolving Credit Facilities | Line of Credit | LIBOR | Maximum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt	2.25%

Long-Term Debt - USD Term Loans

Long-Term Debt - USD Term Loans - Additional Information (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2020USD ($)vesselterm_loan	Dec. 31, 2019USD ($)
Debt Instrument [Line Items]
Number of Term Loans | term_loan	5
Aggregate principal amount	$ 1,569,304	$ 1,842,546
Minimum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt	0.30%
Maximum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt	3.25%
Long-term Debt
Debt Instrument [Line Items]
Aggregate principal amount	$ 916,079	$ 1,114,707
Number Of Vessels | vessel	16
Long-term Debt | Minimum [Member]
Debt Instrument [Line Items]
Fixed interest rate on debt	4.11%
Long-term Debt | Maximum [Member]
Debt Instrument [Line Items]
Fixed interest rate on debt	4.41%
Long-term Debt | LIBOR | Minimum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt	0.30%
Long-term Debt | LIBOR | Maximum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt	3.25%
Teekay Nakilat Joint Venture | Teekay Lng [Member]
Debt Instrument [Line Items]
Percentage of ownership interest	70.00%

Long-Term Debt - NOK Bonds - Ad

Long-Term Debt - NOK Bonds - Additional Information (Details) $ in Thousands, kr in Billions	3 Months Ended		6 Months Ended
	Jun. 30, 2020USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2020USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2020NOK (kr)	Dec. 31, 2019USD ($)	Dec. 31, 2019NOK (kr)
Debt Instrument [Line Items]
Carrying amount of debt	$ 1,569,304		$ 1,569,304			$ 1,842,546
Foreign exchange gains (losses)	(11,624)	$ (7,243)	$ (6,885)	$ (7,974)
Minimum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt			0.30%
Maximum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt			3.25%
Unsecured Debt
Debt Instrument [Line Items]
Senior unsecured bonds issued | kr					kr 2.1		kr 3.1
Carrying amount of debt	212,985		$ 212,985			$ 347,163
Unsecured Debt | Foreign Exchange Contract [Member]
Debt Instrument [Line Items]
Derivative, Notional Amount	$ 248,500		$ 248,500
Unsecured Debt | Minimum [Member] | Foreign Exchange Contract [Member]
Debt Instrument [Line Items]
Fixed Rate Payable	7.72%		7.72%		7.72%
Unsecured Debt | Maximum [Member] | Foreign Exchange Contract [Member]
Debt Instrument [Line Items]
Fixed Rate Payable	7.89%		7.89%		7.89%
Unsecured Debt | NIBOR | Minimum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt			4.60%
Unsecured Debt | NIBOR | Maximum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt			6.00%

Long-Term Debt - Euro-denominat

Long-Term Debt - Euro-denominated Term Loans- Additional Information (Details) $ in Thousands, € in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2020USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2020vessel	Jun. 30, 2020subsidiary	Jun. 30, 2020credit_facility	Jun. 30, 2020term_loan	Jun. 30, 2020EUR (€)	Dec. 31, 2019USD ($)	Dec. 31, 2019EUR (€)
Debt Instrument [Line Items]
Number of Term Loans | term_loan								5
Carrying amount of debt | $	$ 1,569,304		$ 1,569,304							$ 1,842,546
Foreign currency exchange loss (notes 8 and 11) | $	(11,624)	$ (7,243)	$ (6,885)	$ (7,974)
Minimum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt			0.30%
Maximum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt			3.25%
Euro-denominated Term Loans
Debt Instrument [Line Items]
Number of Term Loans | term_loan								2
Carrying amount of debt	$ 153,200		$ 153,200						€ 136.4	$ 165,376	€ 147.5
Number Of Vessels | vessel					2
Euro-denominated Term Loans | EURIBOR | Minimum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt			0.60%
Euro-denominated Term Loans | EURIBOR | Maximum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt			1.95%
Require Minimum Vessel Value To Outstanding Loan Principal Balance Ratios [Member]
Debt Instrument [Line Items]
Number of Term Loans							3	1
Number of subsidiaries that guaranteed the term loans | subsidiary						1

Long-Term Debt - Other - Additi

Long-Term Debt - Other - Additional Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2020USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2020	Jun. 30, 2020credit_facility	Jun. 30, 2020term_loan	Dec. 31, 2019USD ($)
Debt Instrument [Line Items]
Carrying amount of debt	$ 1,569,304		$ 1,569,304					$ 1,842,546
Weighted-average interest rate for the Partnership's long-term debt outstanding					2.88%			4.12%
Foreign exchange gains (losses)	(11,624)	$ (7,243)	(6,885)	$ (7,974)
Aggregate annual long-term debt principal repayments, for remainder of year	61,000		61,000
Aggregate annual long-term debt principal repayments, year two	405,200		405,200
Aggregate annual long-term debt principal repayments, year three	373,100		373,100
Aggregate annual long-term debt principal repayments, year four	202,000		202,000
Aggregate annual long-term debt principal repayments, year five	102,100		102,100
Aggregate annual long-term debt principal repayments, thereafter	425,900		425,900
Number of loan facilities | term_loan							5
Long-term debt	1,558,484		$ 1,558,484					$ 1,831,396
Minimum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt			0.30%
Maximum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt			3.25%
Other U.S. Dollar-denominated Loans
Debt Instrument [Line Items]
Carrying amount of debt	446		$ 446					$ 3,300
Other U.S. Dollar-denominated Loans | LIBOR
Debt Instrument [Line Items]
Variable interest rate on debt			1.00%
Require Minimum Vessel Value To Outstanding Loan Principal Balance Ratios [Member]
Debt Instrument [Line Items]
Number of loan facilities						3	1
Long-term debt	$ 380,000		$ 380,000
Long Term Debt1 [Member] | Vessel
Debt Instrument [Line Items]
Percentage of vessel value to outstanding loan Principal balance					218.00%
Long Term Debt1 [Member] | Require Minimum Vessel Value To Outstanding Loan Principal Balance Ratios [Member]
Debt Instrument [Line Items]
Percentage of vessel value to outstanding loan Principal balance					115.00%
Long Term Debt2 [Member] | Vessel
Debt Instrument [Line Items]
Percentage of vessel value to outstanding loan Principal balance					138.00%
Long Term Debt2 [Member] | Require Minimum Vessel Value To Outstanding Loan Principal Balance Ratios [Member]
Debt Instrument [Line Items]
Percentage of vessel value to outstanding loan Principal balance					120.00%
Long Term Debt3 [Member] | Vessel
Debt Instrument [Line Items]
Percentage of vessel value to outstanding loan Principal balance					192.00%
Long Term Debt3 [Member] | Require Minimum Vessel Value To Outstanding Loan Principal Balance Ratios [Member]
Debt Instrument [Line Items]
Percentage of vessel value to outstanding loan Principal balance					135.00%
Teekay Nakilat Joint Venture | Qatar Gas Transport Company Ltd [Member]
Debt Instrument [Line Items]
Joint venture co-owned noncontrolling interest percentage					30.00%

Income Tax Income Tax (Details)

Income Tax Income Tax (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Current	$ 1,131	$ (1,603)	$ (1,381)	$ (4,035)
Deferred	673	(146)	673	(292)
Income tax recovery (expense)	$ 1,804	$ (1,749)	$ (708)	$ (4,327)

Related Party Transactions - Sc

Related Party Transactions - Schedule of Related Party Transactions (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020USD ($)vessellease	Jun. 30, 2019USD ($)	Jun. 30, 2020USD ($)vessellease	Jun. 30, 2019USD ($)	Dec. 31, 2019vessel
Related Party Transaction [Line Items]
Voyage revenues	$ (148,205)	$ (153,060)	$ (288,092)	$ (302,804)
Vessel operating expenses	(28,407)	(27,457)	(54,511)	(53,558)
Time-charter hire expenses	(5,368)	(3,080)	(11,290)	(8,671)
General and administrative expenses	(7,883)	(5,667)	(14,050)	(12,299)
Equity income (loss)	32,155	1,738	32,528	7,316
Revenue from Related Parties		2,500		2,500
Affiliated Entity [Member]
Related Party Transaction [Line Items]
Voyage revenues	(9,200)	12,233	(18,177)	(20,794)
Vessel operating expenses	(1,337)	(2,452)	(2,733)	(5,267)
Time-charter hire expenses	(5,368)	(3,080)	(11,290)	(8,671)
General and administrative expenses	(3,787)	(4,170)	(7,585)	(8,324)
Equity income (loss)	(603)	(238)	(1,206)	(442)
Affiliated Entity [Member] | Yamal Lng Joint Venture [Member]
Related Party Transaction [Line Items]
Equity income (loss)	$ 600	200	$ 1,200	400
Asset under Construction [Member] | Affiliated Entity [Member] | Pan Union Joint Venture [Member]
Related Party Transaction [Line Items]
Number Of Vessels | vessel					4
LNG Carriers [Member]
Related Party Transaction [Line Items]
Number Of Vessels | lease	9		9
LNG Carriers [Member] | Affiliated Entity [Member] | Yamal Lng Joint Venture [Member]
Related Party Transaction [Line Items]
Number Of Vessels | vessel	6		6
Teekay Marine Solutions (Bermuda) Ltd. [Member] | Affiliated Entity [Member]
Related Party Transaction [Line Items]
Vessel operating expenses		(1,000)		(2,000)
Bahrain LNG Joint Venture [Member] | Affiliated Entity [Member]
Related Party Transaction [Line Items]
Voyage revenues	$ (7,200)	(7,700)	$ (14,100)	(15,300)
Proceeds from Fees Received	$ 2,000	$ 2,000	$ 4,100	$ 3,000
Bahrain Spirit [Member]
Related Party Transaction [Line Items]
Lessor, Direct financing lease, Term of contract	21 years		21 years
Number Of Vessels	1		1

Related Party Transactions - No

Related Party Transactions - Non-interest Bearing Advances - Additional Information (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Related Party Transaction [Line Items]
Advances to affiliates	$ 3,025	$ 5,143
Advances from affiliates	18,271	7,003
Affiliated Entity [Member]
Related Party Transaction [Line Items]
Advances to affiliates	3,000	5,100
Advances from affiliates	$ 18,300	$ 7,000

Related Party Transactions - Sh

Related Party Transactions - Shipbuilding and Site Supervision Services - Additional Information (Details) $ in Millions	6 Months Ended
	Jun. 30, 2019USD ($)
Asset under Construction [Member] | Affiliated Entity [Member]
Related Party Transaction [Line Items]
Property, Plant and Equipment, Additions	$ 1.8

Related Party Transactions Rela

Related Party Transactions Related Party Transactions - Additional Information (Details) - USD ($) shares in Thousands, $ in Thousands	1 Months Ended		3 Months Ended
	Apr. 30, 2020	Dec. 31, 2019	Mar. 31, 2020	Jun. 30, 2020	May 11, 2020
Related Party Transaction [Line Items]
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	$ (2,200)	$ (2,700)	$ 462
Limited Partners' Capital Account, Units Issued		77,500		86,900
Subsidiaries of Teekay LNG [Member]
Related Party Transaction [Line Items]
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest		1.00%
Teekay Lng [Member]
Related Party Transaction [Line Items]
Limited Partners' Capital Account, Units Issued					10,750

Derivative Instruments and He_3

Derivative Instruments and Hedging Activities - Summary of Cross Currency Swap Agreements (Details) - Cross-currency swap agreements kr in Thousands, $ in Thousands	6 Months Ended
	Jun. 30, 2020USD ($)	Jun. 30, 2020NOK (kr)
Derivative [Line Items]
Fair Value / Carrying Amount of Asset (Liability) $	$ (46,179)
NIBOR | 6.00%
Derivative [Line Items]
Derivative, Notional Amount	$ 146,500	kr 1,200,000
Derivative, Basis Spread on Variable Rate	6.00%	6.00%
Fixed Rate Payable	7.72%	7.72%
Fair Value / Carrying Amount of Asset (Liability) $	$ (24,681)
Weighted- Average Remaining Term (Years)	1 year 3 months 18 days
NIBOR | 4.60%
Derivative [Line Items]
Derivative, Notional Amount	$ 102,000	kr 850,000
Derivative, Basis Spread on Variable Rate	4.60%	4.60%
Fixed Rate Payable	7.89%	7.89%
Fair Value / Carrying Amount of Asset (Liability) $	$ (21,498)
Weighted- Average Remaining Term (Years)	3 years 2 months 12 days

Derivative Instruments and He_4

Derivative Instruments and Hedging Activities - Interest Rate Swap Agreements (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2020USD ($)
Minimum [Member]
Derivative [Line Items]
Variable interest rate on debt	0.30%
Maximum [Member]
Derivative [Line Items]
Variable interest rate on debt	3.25%
Interest rate swap agreements
Derivative [Line Items]
Interest Rate Derivative Liabilities, at Fair Value	$ (81,488)
U.S. Dollar-denominated interest rate swaps 1 | LIBOR
Derivative [Line Items]
Derivative, Notional Amount	112,500
Fair Value / Carrying Amount of (Liability)	$ (22,910)
Weighted- Average Remaining Term (Years)	8 years 6 months
Fixed Rate Payable	5.20%
U.S. Dollar-denominated interest rate swaps 2 | LIBOR
Derivative [Line Items]
Derivative, Notional Amount	$ 16,067
Fair Value / Carrying Amount of (Liability)	$ (278)
Weighted- Average Remaining Term (Years)	1 year 1 month 6 days
Fixed Rate Payable	2.80%
U.S. Dollar-denominated interest rate swaps 3 | LIBOR
Derivative [Line Items]
Derivative, Notional Amount	$ 150,256
Fair Value / Carrying Amount of (Liability)	$ (6,562)
Fixed Rate Payable	1.40%
U.S. Dollar-denominated interest rate swaps 4 | LIBOR
Derivative [Line Items]
Derivative, Notional Amount	$ 307,632
Fair Value / Carrying Amount of (Liability)	$ (30,170)
Weighted- Average Remaining Term (Years)	2 years
Fixed Rate Payable	3.50%
U.S. Dollar-denominated interest rate swaps 5 | LIBOR
Derivative [Line Items]
Derivative, Notional Amount	$ 166,376
Interest Rate Fair Value Hedge Derivative at Fair Value, Net	$ (14,601)
Weighted- Average Remaining Term (Years)	6 years 6 months
Fixed Rate Payable	2.30%
Euro-denominated interest rate swaps | EURIBOR
Derivative [Line Items]
Derivative, Notional Amount	$ 70,220
Fair Value / Carrying Amount of (Liability)	$ (6,967)
Weighted- Average Remaining Term (Years)	3 years 2 months 12 days
Fixed Rate Payable	3.90%

Derivative Instruments and He_5

Derivative Instruments and Hedging Activities - Narrative (Details) - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Interest rate swaps and cross currency swaps agreement
Derivative [Line Items]
Fair value of derivative asset	$ 0	$ 2,200,000
Derivative Liability, Fair Value, Gross Liability	104,800,000	74,600,000
Derivative
Derivative [Line Items]
Deposit as security for swap liabilities	$ 23,300,000	$ 14,300,000

Derivative Instruments and He_6

Derivative Instruments and Hedging Activities -Classification and Fair Value Amounts of Derivative Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Current portion of derivative assets	$ 0	$ 355
Derivative assets	0	1,834
Accrued liabilities	(79,832)	(76,752)
Current portion of derivative liabilities	(34,997)	(38,458)
Foreign Exchange Forward [Member]
Derivatives, Fair Value [Line Items]
Accounts Receivable		0
Current portion of derivative assets		0
Derivative assets		0
Accrued liabilities		0
Current portion of derivative liabilities		(202)
Derivative liabilities		0
Cross currency swap agreements
Derivatives, Fair Value [Line Items]
Accounts Receivable	0	0
Current portion of derivative assets	0	0
Derivative assets	0	0
Accrued liabilities	(872)	(456)
Current portion of derivative liabilities	(5,995)	(22,661)
Derivative liabilities	(39,312)	(18,987)
Derivative
Derivatives, Fair Value [Line Items]
Accounts Receivable	0	21
Current portion of derivative assets	0	355
Derivative assets	0	1,834
Accrued liabilities	(4,334)	(3,289)
Current portion of derivative liabilities	(34,997)	(38,458)
Derivative liabilities	(88,336)	(51,006)
Not Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Accounts Receivable	0	21
Current portion of derivative assets	0	355
Derivative assets	0	1,834
Accrued liabilities	(3,399)	(2,821)
Current portion of derivative liabilities	(25,917)	(14,758)
Derivative liabilities	(37,571)	(28,544)
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Accounts Receivable	0	0
Current portion of derivative assets	0	0
Derivative assets	0	0
Accrued liabilities	(63)	(12)
Current portion of derivative liabilities	(3,085)	(837)
Derivative liabilities	$ (11,453)	$ (3,475)

Derivative Instruments and He_7

Derivative Instruments and Hedging Activities - Gain (Loss) for Derivative Instruments Not Designated or Qualifying as Hedging Instruments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Realized gains (losses)	$ (3,662)	$ (2,392)	$ (6,814)	$ (4,777)
Unrealized gains (losses)	(4,854)	(5,434)	(22,173)	(9,666)
Unrealized gains (losses)			(3,660)	(4,727)
Total	(8,516)	(7,826)	(28,987)	(14,443)
Interest rate swap agreements
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Realized gains (losses)	(3,662)	(2,392)	(6,573)	(4,777)
Unrealized gains (losses)	(4,854)	(5,333)	(22,375)	(9,525)
Total	(8,516)	(7,725)	(28,948)	(14,302)
Foreign Exchange Forward [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Realized gains (losses)	0	0	(241)	0
Unrealized gains (losses)	0	(101)	202	(101)
Total	0	(101)	(39)	(101)
Toledo Spirit time-charter derivative
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Realized gains (losses)			0	0
Unrealized gains (losses)			0	(40)
Total			0	(40)
Cross currency swap agreements | Foreign Currency Gain (Loss) [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Realized gains (losses)	(1,430)	(1,087)	(3,247)	(2,521)
Unrealized gains (losses)	45,881	(139)	(3,659)	(2,059)
Total	44,451	(1,226)	(6,906)	(4,580)
Cross-currency swap agreements termination | Foreign Currency Gain (Loss) [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Realized gains (losses)	(33,844)		(33,844)
Unrealized gains (losses)	0		0
Total	(33,844)		(33,844)
Cross-currency swap agreements | Foreign Currency Gain (Loss) [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Realized gains (losses)	(35,274)	(1,087)	(37,091)	(2,521)
Unrealized gains (losses)	45,881	(139)	(3,659)	(2,059)
Total	$ 10,607	$ (1,226)	$ (40,750)	$ (4,580)

Derivative Instruments and He_8

Derivative Instruments and Hedging Activities - Effective Portion of Gains (Losses) on Interest Rate Swap Agreements (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Derivative [Line Items]
Amount of Loss Recognized in OCI	$ (11,081)	$ (30,749)	$ (68,634)	$ (52,238)
Interest expense
Derivative [Line Items]
Amount of Loss Recognized in OCI	(1,055)		(10,226)
Amount of Loss Reclassified from Accumulated OCI to Interest Expense	$ 482		$ 634
Amount of Loss Recognized in OCI		(4,570)		(7,402)
Amount of Gain Reclassified from Accumulated OCI to Interest Expense		$ 157		$ 408

Commitments and Contingencies -

Commitments and Contingencies - Commitments to Fund Newbuilding and Other Construction Contract Costs (Details) - USD ($) $ in Thousands	1 Months Ended
	Jun. 30, 2019	Jun. 30, 2020
Unrecorded Unconditional Purchase Obligation [Line Items]
Total estimated remaining costs		$ 52,977
Estimated Costs Remainder of 2020		15,409
Estimated Costs 2021		22,917
Estimated Costs 2022		14,651
Equity Method Investments [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Total estimated remaining costs		11,351
Estimated Costs Remainder of 2020		11,351
Estimated Costs 2021		0
Estimated Costs 2022		0
Consolidated Entities [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Total estimated remaining costs		41,626
Estimated Costs Remainder of 2020		4,058
Estimated Costs 2021		22,917
Estimated Costs 2022		$ 14,651
Long-term Purchase Commitment, Amount	$ 58,100
Bahrain LNG Joint Venture [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Equity Method Investment, Ownership Percentage		30.00%
Bahrain LNG Joint Venture [Member] | Lng Receiving and Regasification Terminal [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Line of credit facility, maximum borrowing capacity		$ 24,000
Line of Credit Facility, Remaining Borrowing Capacity		7,000
Bahrain LNG Joint Venture [Member] | Construction [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Total estimated remaining costs		$ 11,400

Commitments and Contingencies_2

Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Loss Contingencies [Line Items]
Working Capital Surplus (Deficit)	$ (271,700)
Long-term Debt, Current Maturities	295,282	$ 393,065
Teekay Tangguh Joint Venture [Member]
Loss Contingencies [Line Items]
Estimated Tax Indemnification	$ 5,900	$ 6,100
Teekay Lng [Member] | Teekay Tangguh Joint Venture [Member]
Loss Contingencies [Line Items]
Percentage of ownership interest	70.00%

Total Capital and Net Income _3

Total Capital and Net Income Per Unit Partnership Units and Net Income Per Common Unit (Details) - USD ($) shares in Thousands, $ in Thousands	6 Months Ended
	Jun. 30, 2020	May 11, 2020	Dec. 31, 2019
Capital Unit [Line Items]
Limited Partners' Capital Account, Units Issued	86,900		77,500
Common Unit, Issuance Value		$ 122,600
General partner	$ (45,868)	$ 2,300	$ (50,241)
Public | Teekay Lng [Member]
Capital Unit [Line Items]
Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest	58.60%
Limited Partners | Teekay Lng [Member]
Capital Unit [Line Items]
Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest	98.20%
Parent Company [Member] | Teekay Lng [Member]
Capital Unit [Line Items]
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest	1.80%
Teekay Lng [Member]
Capital Unit [Line Items]
Limited Partners' Capital Account, Units Issued		10,750

Total Capital and Net Income _4

Total Capital and Net Income Per Unit Net Income (Loss) Per Common Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Class of Stock [Line Items]
Limited partners’ interest in net income (loss)	$ 37,796	$ 9,810	$ (834)	$ 24,698
Weighted average number of common units	82,197,665	78,603,636	79,629,623	78,600,342
Dilutive effect of unit-based compensation	64,570	81,901	0	81,921
Weighted average number of common units and common unit equivalents (in units)	82,262,235	78,685,537	79,629,623	78,682,263
Basic (usd per unit)	$ 0.46	$ 0.12	$ (0.01)	$ 0.31
Diluted (usd per unit)	$ 0.46	$ 0.12	$ (0.01)	$ 0.31
Limited Partners | Preferred Units
Class of Stock [Line Items]
Dividends, Preferred Stock, Cash	$ 6,400	$ 6,400	$ 12,900	$ 12,900

Total Capital and Net Income _5

Total Capital and Net Income Per Unit Common Unit Repurchases (Details) - USD ($)	3 Months Ended				6 Months Ended		30 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Dec. 31, 2019
Accelerated Share Repurchases [Line Items]
Partners' Capital Account, Treasury Units, Purchased		$ 15,635,000	$ 2,559,000	$ 9,497,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 55,800,000				$ 55,800,000		$ 55,800,000
Repurchase Agreements [Member] | Common Units
Accelerated Share Repurchases [Line Items]
Stock Repurchase Program, Authorized Amount								$ 100,000,000
Partners' Capital Account, Units, Treasury Units Purchased	0		200,000		1,400,000	1,000,000
General Partner
Accelerated Share Repurchases [Line Items]
Partners' Capital Account, Treasury Units, Purchased		$ 313,000	$ 51,000	$ 190,000
General Partner | Repurchase Agreements [Member] | Common Units
Accelerated Share Repurchases [Line Items]
Partners' Capital Account, Treasury Units, Purchased	$ 0		$ 100,000		$ 300,000	$ 200,000
Limited Partners | Common Units
Accelerated Share Repurchases [Line Items]
Partners' Capital Account, Units, Treasury Units Purchased		(1,373,000)	(187,000)	(815,000)
Partners' Capital Account, Treasury Units, Purchased		$ 15,322,000	$ 2,508,000	$ 9,307,000
Limited Partners | Repurchase Agreements [Member] | Common Units
Accelerated Share Repurchases [Line Items]
Partners' Capital Account, Units, Treasury Units Purchased							3,600,000
Partners' Capital Account, Treasury Units, Purchased	$ 0		$ 2,500,000		$ 15,300,000	$ 11,800,000	$ 44,200,000

Restructuring Charges Restruc_2

Restructuring Charges Restructuring Charges (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0	$ 818	$ 0	$ 2,976
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 800		$ 3,000
Restructuring Reserve	$ 600		$ 600

Write-down of Vessels Write-Dow

Write-down of Vessels Write-Down of Vessels (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2020USD ($)	Jun. 30, 2019USD ($)	Mar. 31, 2020vessel
Property, Plant and Equipment [Line Items]
Write-down of vessels | $	$ 0	$ 0	$ 45,000	$ 0
LPG Carriers [Member]
Property, Plant and Equipment [Line Items]
Number Of Vessels | vessel					7
LPG Carriers [Member]
Property, Plant and Equipment [Line Items]
Write-down of vessels | $			$ 45,000
Number Of Vessels | vessel					6

Supplemental Cash Flow Inform_3

Supplemental Cash Flow Information Schedule of Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
Supplemental Cash Flow Elements [Abstract]
Cash and cash equivalents	$ 226,328	$ 160,221	$ 124,880	$ 149,014
Restricted cash – current	11,544	53,689	48,869	38,329
Restricted cash – long-term	54,603	39,381	31,439	35,521
Total	$ 292,475	$ 253,291	$ 205,188	$ 222,864	$ 205,188

Supplemental Cash Flow Inform_4

Supplemental Cash Flow Information Additional Information (Details) $ in Millions	6 Months Ended
	Jun. 30, 2019USD ($)
Schedule Of Supplemental Cash Flow [Line Items]
Property, Plant and Equipment, Disposals	$ 23.6
Teekay Lng [Member] | Toledo Spirit [Member] | Obligations [Member]
Schedule Of Supplemental Cash Flow [Line Items]
Extinguishment of Debt, Amount	$ 23.6

Subsequent Events (Details)

Subsequent Events (Details) - Norwegian Krone-denominated Bonds due from 2021 to 2023 $ in Millions, kr in Billions	Aug. 20, 2020USD ($)	Aug. 20, 2020NOK (kr)	Jun. 30, 2020NOK (kr)	Dec. 31, 2019NOK (kr)
Subsequent Event [Line Items]
Unsecured Debt			kr 2.1	kr 3.1
Subsequent Event [Member]
Subsequent Event [Line Items]
Unsecured Debt		kr 1
Fixed Rate Payable	5.74%	5.74%
United States of America, Dollars | Subsequent Event [Member]
Subsequent Event [Line Items]
Unsecured Debt | $	$ 112

Uncategorized Items - tgp6-kq2x

Label	Element	Value
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (3,017,000)
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(53,300,000)
General Partner [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	37,000
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(1,016,000)
Noncontrolling Interest [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(2,474,000)
Common Stock [Member] | Limited Partner [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	1,777,000
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(49,810,000)
AOCI Attributable to Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (4,831,000)