6-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

  _____________________________________________________________

FORM 6-K

  _____________________________________________________________

Report of Foreign Private Issuer

Pursuant to Rule 13a-16 or 15d-16 under

the Securities Exchange Act of 1934

For the quarterly period ended September 30, 2021

Commission file number 1-32479

  _____________________________________________________________ 

TEEKAY LNG PARTNERS L.P.

(Exact name of Registrant as specified in its charter)

   _____________________________________________________________

4th Floor, Belvedere Building

69 Pitts Bay Road

Hamilton, HM 08 Bermuda

(Address of principal executive office)

   _____________________________________________________________

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F  ý             Form 40-F  ¨

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1).

Yes  ¨            No   ý

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7).

Yes  ¨            No   ý

TEEKAY LNG PARTNERS L.P. AND SUBSIDIARIES

REPORT ON FORM 6-K FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2021

INDEX

PART I: FINANCIAL INFORMATION	PAGE
Item 1. Financial Statements (Unaudited)
Unaudited Consolidated Statements of Income for the three and nine months ended September 30, 2021 and 2020	3
Unaudited Consolidated Statements of Comprehensive Income for the three and nine months ended September 30, 2021 and 2020	4
Unaudited Consolidated Balance Sheets as at September 30, 2021 and December 31, 2020	5
Unaudited Consolidated Statements of Cash Flows for the nine months ended September 30, 2021 and 2020	6
Unaudited Consolidated Statements of Changes in Total Equity for the three and nine months ended September 30, 2021 and 2020	7
Notes to the Unaudited Consolidated Financial Statements	9
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	25
PART II: OTHER INFORMATION	40
SIGNATURES	42

2

ITEM 1 – FINANCIAL STATEMENTS

TEEKAY LNG PARTNERS L.P. AND SUBSIDIARIES

UNAUDITED CONSOLIDATED STATEMENTS OF INCOME

(in thousands of U.S. Dollars, except unit and per unit data)

	Three Months Ended September 30,		Nine Months Ended September 30,
	2021	2020	2021	2020
	$	$	$	$
Voyage revenues (notes 6 and 10a)	146,577	148,935	448,148	437,027
Voyage expenses	(7,221)	(3,950)	(20,764)	(11,596)
Vessel operating expenses (note 10a)	(30,426)	(30,642)	(93,051)	(85,153)
Time-charter hire expenses (notes 5b and 10a)	(5,665)	(5,980)	(17,382)	(17,270)
Depreciation and amortization	(33,002)	(32,601)	(97,253)	(96,869)
General and administrative expenses (note 10a)	(12,619)	(6,165)	(26,707)	(20,215)
Write-down of vessels (note 14)	—	—	—	(45,000)
Income from vessel operations	57,644	69,597	192,991	160,924
Equity income (notes 7 and 10a)	39,238	24,346	105,694	56,874
Interest expense	(29,513)	(30,528)	(89,249)	(102,375)
Interest income (note 7)	1,315	1,406	4,623	5,473
Realized and unrealized gain (loss) on non-designated derivative instruments (note 11)	101	(1,327)	3,849	(30,314)
Foreign currency exchange gain (loss) (notes 8 and 11)	2,767	(7,853)	6,884	(14,738)
Other income (expense) (note 3b)	1,000	(14,149)	(3,857)	(15,189)
Net income before income tax expense	72,552	41,492	220,935	60,655
Income tax expense (note 9)	(2,226)	(1,420)	(3,264)	(2,128)
Net income	70,326	40,072	217,671	58,527
Non-controlling interest in net income (loss)	3,352	(203)	9,818	6,312
Preferred unitholders' interest in net income	6,425	6,425	19,275	19,275
General partner's interest in net income	1,062	595	3,311	519
Limited partners’ interest in net income	59,487	33,255	185,267	32,421
Limited partners’ interest in net income per common unit (note 13):
• Basic	0.68	0.38	2.13	0.40
• Diluted	0.68	0.38	2.12	0.39
Weighted-average number of common units outstanding (note 13):
• Basic	87,120,897	86,951,234	87,081,753	82,010,753
• Diluted	87,232,991	87,041,046	87,218,410	82,109,826

Related party transactions (note 10)

Subsequent events (note 16)

The accompanying notes are an integral part of the unaudited consolidated financial statements.

3

TEEKAY LNG PARTNERS L.P. AND SUBSIDIARIES

UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(in thousands of U.S. Dollars)

	Three Months Ended September 30,		Nine Months Ended September 30,
	2021	2020	2021	2020
	$	$	$	$
Net income	70,326	40,072	217,671	58,527
Other comprehensive income (loss):
Other comprehensive income (loss) before   reclassifications
Unrealized gain (loss) on qualifying cash flow hedging   instruments, net of tax	2,942	(959)	24,001	(69,593)
Amounts reclassified from accumulated other    comprehensive loss, net of tax
To equity income:
Realized loss on qualifying cash flow hedging   instruments	5,096	4,655	15,174	10,586
To interest expense:
Realized loss on qualifying cash flow hedging   instruments (note 11)	840	835	2,480	1,469
Other comprehensive income (loss)	8,878	4,531	41,655	(57,538)
Comprehensive income	79,204	44,603	259,326	989
Non-controlling interest in comprehensive income (loss)	3,664	(18)	11,343	3,429
Preferred unitholders' interest in comprehensive income	6,425	6,425	19,275	19,275
General and limited partners' interest in comprehensive   income (loss)	69,115	38,196	228,708	(21,715)

The accompanying notes are an integral part of the unaudited consolidated financial statements.

4

TEEKAY LNG PARTNERS L.P. AND SUBSIDIARIES

UNAUDITED CONSOLIDATED BALANCE SHEETS

(in thousands of U.S. Dollars, except unit data)

	As at September 30, 2021	As at December 31, 2020
	$	$
ASSETS
Current
Cash and cash equivalents	109,596	206,762
Restricted cash – current (note 15)	8,840	8,358
Accounts receivable, including non-trade of $10,519 (2020 – $5,411)	16,135	7,631
Prepaid expenses	13,056	9,259
Current portion of derivative assets (note 11)	465	—
Current portion of net investments in direct financing leases, net (notes 3b and 6)	14,632	13,969
Current portion of advances to equity-accounted joint ventures, net (notes 3b and 7)	8,162	10,991
Advances to affiliates (note 10b)	14,664	4,924
Other current assets	5,972	237
Total current assets	191,522	262,131
Restricted cash – long-term (note 15)	37,191	42,823
Vessels and equipment
At cost, less accumulated depreciation of $798,438 (2020 – $744,258)	1,194,238	1,220,355
Vessels related to finance leases, at cost, less accumulated depreciation of $193,624 (2020 – $157,386) (note 5a)	1,642,436	1,654,814
Operating lease right-of-use assets (note 5b)	10,338	20,750
Total vessels and equipment	2,847,012	2,895,919
Investments in and advances to equity-accounted joint ventures, net (notes 3b and 7)	1,154,202	1,056,792
Net investments in direct financing leases, net (notes 3b and 6)	484,507	500,101
Other assets	31,564	22,382
Derivative assets (note 11)	5,253	4,505
Intangible assets, net	27,868	34,510
Goodwill	34,841	34,841
Total assets	4,813,960	4,854,004
LIABILITIES AND EQUITY
Current
Accounts payable	9,170	4,883
Accrued liabilities (note 11)	66,414	81,706
Unearned revenue (note 6)	19,488	30,254
Current portion of long-term debt (note 8)	350,372	250,508
Current obligations related to finance leases (note 5a)	73,437	71,932
Current portion of operating lease liabilities (note 5b)	10,338	14,003
Current portion of derivative liabilities (note 11)	27,023	56,925
Advances from affiliates (note 10b)	13,802	11,047
Total current liabilities	570,044	521,258
Long-term debt (note 8)	1,035,320	1,221,705
Long-term obligations related to finance leases (note 5a)	1,213,607	1,268,990
Long-term operating lease liabilities (note 5b)	—	6,747
Other long-term liabilities (notes 3b and 12b)	57,585	56,063
Derivative liabilities (note 11)	25,910	32,971
Total liabilities	2,902,466	3,107,734
Commitments and contingencies (notes 5, 7, 8, 11 and 12)
Equity
Limited partners - common units (Unlimited units authorized; 87.0 million units issued and outstanding at September 30, 2021 and December 31, 2020)	1,580,034	1,465,408
Limited partners - preferred units (11.9 million units authorized; 11.8 million units issued and outstanding at September 30, 2021 and December 31, 2020)	285,159	285,159
General partner	48,230	46,182
Accumulated other comprehensive loss	(63,706)	(103,836)
Partners' equity	1,849,717	1,692,913
Non-controlling interest	61,777	53,357
Total equity	1,911,494	1,746,270
Total liabilities and total equity	4,813,960	4,854,004

The accompanying notes are an integral part of the unaudited consolidated financial statements.

5

TEEKAY LNG PARTNERS L.P. AND SUBSIDIARIES

UNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands of U.S. Dollars)

	Nine Months Ended September 30,
	2021	2020
	$	$
Cash, cash equivalents and restricted cash provided by (used for)
OPERATING ACTIVITIES
Net income	217,671	58,527
Non-cash and non-operating items:
Unrealized (gain) loss on non-designated derivative instruments (note 11)	(34,178)	18,553
Depreciation and amortization	97,253	96,869
Write-down of vessels (note 14)	—	45,000
Unrealized foreign currency exchange (gain) loss including the effect of the settlement of cross   currency swaps (note 11)	(13,125)	10,697
Equity income, net of distributions received $39,089 (2020 – $32,297)	(66,605)	(24,577)
Amortization of deferred financing issuance costs included in interest expense	4,134	4,401
Change in unrealized credit loss provisions included in other expense (note 3b)	3,117	14,557
Other non-cash items	3,823	3,595
Change in operating assets and liabilities:
Receipts from direct financing and sales-type leases	11,108	270,973
Expenditures for dry docking	(10,818)	(1,984)
Other operating assets and liabilities	(74,683)	15,960
Net operating cash flow	137,697	512,571
FINANCING ACTIVITIES
Proceeds from issuance of long-term debt	237,691	561,127
Scheduled repayments of long-term debt and settlement of related swaps (note 11)	(174,415)	(220,875)
Prepayments of long-term debt	(136,543)	(687,061)
Financing issuance costs	(2,631)	(5,111)
Scheduled repayments of obligations related to finance leases	(53,878)	(52,419)
Repurchase of common units (note 13)	—	(15,635)
Cash distributions paid	(92,306)	(75,845)
Dividends paid to non-controlling interests	(2,923)	(3,390)
Acquisition of non-controlling interest in certain of the Partnership's subsidiaries (note 10d)	—	(2,219)
Net financing cash flow	(225,005)	(501,428)
INVESTING ACTIVITIES
Expenditures for vessels and equipment	(25,338)	(9,597)
Proceeds from repayments of advances to equity-accounted joint ventures	10,330	—
Net investing cash flow	(15,008)	(9,597)
(Decrease) increase in cash, cash equivalents and restricted cash	(102,316)	1,546
Cash, cash equivalents and restricted cash, beginning of the period	257,943	253,291
Cash, cash equivalents and restricted cash, end of the period	155,627	254,837

Supplemental cash flow information (notes 10c and 15)

The accompanying notes are an integral part of the unaudited consolidated financial statements.

6

TEEKAY LNG PARTNERS L.P. AND SUBSIDIARIES

UNAUDITED CONSOLIDATED STATEMENTS OF CHANGES IN TOTAL EQUITY

(in thousands of U.S. Dollars and units)

	TOTAL EQUITY
	Partners’ Equity
	Limited Partners
	Common Units	Common Units	Preferred Units	Preferred Units	General Partner	Accumulated Other Comprehensive Loss	Non- controlling Interest	Total
	#	$	#	$	$	$	$	$
Balance as at December 31, 2020	86,951	1,465,408	11,800	285,159	46,182	(103,836)	53,357	1,746,270
Net income	—	79,740	—	6,425	1,426	—	3,476	91,067
Other comprehensive income	—	—	—	—	—	42,461	1,343	43,804
Distributions declared:
Common units ($0.25 per unit)	—	(21,738)	—	—	(389)	—	—	(22,127)
Preferred units Series A ($0.5625 per unit)	—	—	—	(2,812)	—	—	—	(2,812)
Preferred units Series B ($0.5313 per unit)	—	—	—	(3,613)	—	—	—	(3,613)
Equity-based compensation	13	336	—	—	6	—	—	342
Balance as at March 31, 2021	86,964	1,523,746	11,800	285,159	47,225	(61,375)	58,176	1,852,931
Net income	—	46,040	—	6,425	823	—	2,990	56,278
Other comprehensive loss	—	—	—	—	—	(10,897)	(130)	(11,027)
Distributions declared:
Common units ($0.2875 per unit)	—	(25,002)	—	—	(447)	—	—	(25,449)
Preferred units Series A ($0.5625 per unit)	—	—	—	(2,812)	—	—	—	(2,812)
Preferred units Series B ($0.5313 per unit)	—	—	—	(3,613)	—	—	—	(3,613)
Dividends paid to non-controlling    interest	—	—	—	—	—	—	(2,670)	(2,670)
Equity-based compensation, net of    withholding tax of $0.2 million	20	664	—	—	12	—	—	676
Balance as at June 30, 2021	86,984	1,545,448	11,800	285,159	47,613	(72,272)	58,366	1,864,314
Net income	—	59,487	—	6,425	1,062	—	3,352	70,326
Other comprehensive income	—	—	—	—	—	8,566	312	8,878
Distributions declared:
Common units ($0.2875 per unit)	—	(25,008)	—	—	(447)	—	—	(25,455)
Preferred units Series A ($0.5625 per unit)	—	—	—	(2,812)	—	—	—	(2,812)
Preferred units Series B ($0.5313 per unit)	—	—	—	(3,613)	—	—	—	(3,613)
Dividends paid to non-controlling    interest	—	—	—	—	—	—	(253)	(253)
Equity-based compensation, net of    withholding tax of $0.3 million	26	107	—	—	2	—	—	109
Balance as at September 30, 2021	87,010	1,580,034	11,800	285,159	48,230	(63,706)	61,777	1,911,494

7

	TOTAL EQUITY
	Partners’ Equity
	Limited Partners
	Common Units	Common Units	Preferred Units	Preferred Units	General Partner	Accumulated Other Comprehensive Loss	Non- controlling Interest	Total
	#	$	#	$	$	$	$	$
Balance as at December 31, 2019	77,510	1,543,598	11,800	285,159	50,241	(57,312)	55,289	1,876,975
Net (loss) income	—	(38,630)	—	6,425	(789)	—	2,166	(30,828)
Other comprehensive loss	—	—	—	—	—	(51,145)	(2,752)	(53,897)
Distributions declared:
Common units ($0.19 per unit)	—	(14,713)	—	—	(300)	—	—	(15,013)
Preferred units Series A ($0.5625     per unit)	—	—	—	(2,812)	—	—	—	(2,812)
Preferred units Series B ($0.5313     per unit)	—	—	—	(3,613)	—	—	—	(3,613)
Change in accounting policy	—	(49,810)	—	—	(1,016)	—	(2,474)	(53,300)
Equity-based compensation	35	208	—	—	4	—	—	212
Other (note 10d)	—	629	—	—	12	—	(179)	462
Repurchase of common units (note 13)	(1,373)	(15,322)	—	—	(313)	—	—	(15,635)
Balance as at March 31, 2020	76,172	1,425,960	11,800	285,159	47,839	(108,457)	52,050	1,702,551
Net income	—	37,796	—	6,425	713	—	4,349	49,283
Other comprehensive loss	—	—	—	—	—	(7,856)	(316)	(8,172)
Distributions declared:
Common units ($0.25 per unit)	—	(19,043)	—	—	(389)	—	—	(19,432)
Preferred units Series A ($0.5625     per unit)	—	—	—	(2,812)	—	—	—	(2,812)
Preferred units Series B ($0.5313     per unit)	—	—	—	(3,613)	—	—	—	(3,613)
Equity-based compensation, net of    withholding tax of $0.4 million	6	669	—	—	13	—	—	682
Issuance of common units (notes 10c and 13)	10,750	2,308	—	—	(2,308)	—	—	—
Balance as at June 30, 2020	86,928	1,447,690	11,800	285,159	45,868	(116,313)	56,083	1,718,487
Net income (loss)	—	33,255	—	6,425	595	—	(203)	40,072
Other comprehensive income	—	—	—	—	—	4,346	185	4,531
Distributions declared:
Common units ($0.25 per unit)	—	(21,736)	—	—	(389)	—	—	(22,125)
Preferred units Series A ($0.5625     per unit)	—	—	—	(2,812)	—	—	—	(2,812)
Preferred units Series B ($0.5313     per unit)	—	—	—	(3,613)	—	—	—	(3,613)
Dividends paid to non-controlling    interest	—	—	—	—	—	—	(3,390)	(3,390)
Equity-based compensation	23	390	—	—	7	—	—	397
Balance as at September 30, 2020	86,951	1,459,599	11,800	285,159	46,081	(111,967)	52,675	1,731,547

The accompanying notes are an integral part of the unaudited consolidated financial statements.

8

TEEKAY LNG PARTNERS L.P. AND SUBSIDIARIES

NOTES TO THE UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

(all tabular amounts stated in thousands of U.S. Dollars, except unit and per unit data and foreign currency exchange rates or unless otherwise indicated)

1.Basis of Presentation

The unaudited interim consolidated financial statements (or unaudited 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 consolidated financial statements should be read in conjunction with the Partnership’s audited consolidated financial statements for the year ended December 31, 2020, which were included in the Partnership’s Annual Report on Form 20-F for the year ended December 31, 2020 filed with the U.S. Securities and Exchange Commission (or SEC) on April 1, 2021. In the opinion of management of Teekay GP L.L.C., the general partner of the Partnership (or the General Partner), these unaudited 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.

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 and derivative assets 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. While the Partnership has experienced some logistical challenges across its fleet due to COVID-19, the Partnership has not yet experienced any material negative financial impacts to its results of operations or financial position for the periods covered by these consolidated financial statements as a result of COVID-19, other than the COVID-19 global pandemic being a contributing factor to the write-down of six of the Partnership's multi-gas vessels during the nine months ended September 30, 2020 as described in Note 14. Given the dynamic nature of the COVID-19 global pandemic, the full extent to which the COVID-19 global pandemic may have material direct or indirect impact on the Partnership's business and the related financial reporting implications cannot be reasonably estimated at this time, although it could materially affect the business, results of operations and financial condition in the future.

2.Accounting Pronouncements

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 Partnership adopted this update on January 1, 2021. The adoption did not have an impact on the Partnership's consolidated financial statements and related disclosures.

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. 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.

In July 2021, the FASB issued ASU 2021-05 - Leases (Topic 842) Lessors — Certain Leases with Variable Lease Payments (or ASU 2021-05). Pursuant to ASU 2021-05, lessors should classify and account for a lease with variable lease payments that do not depend on a reference index or a rate as an operating lease if, without reference to ASU 2012-05, the lease would have been classified as a sales-type lease or a direct financing lease and a day-one loss would have been recognized. The Partnership expects to adopt ASU 2021-05 on January 1, 2022, although earlier application is permitted. This ASU can be adopted either (1) retrospectively to leases that commenced or were modified on or after January 1, 2019 or (2) prospectively to leases that commence or are modified on or after the date that an entity first applies the amendments. The Partnership is currently evaluating the effect of adopting this new guidance.

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TEEKAY LNG PARTNERS L.P. AND SUBSIDIARIES

NOTES TO THE UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

(all tabular amounts stated in thousands of U.S. Dollars, except unit and per unit data and foreign currency exchange rates or unless otherwise indicated)

3.    Fair Value Measurements and 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, 2020. 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.

		September 30, 2021		December 31, 2020
	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 15)	Level 1	155,627	155,627	257,943	257,943
Derivative instruments (note 11)
Interest rate swap agreements – assets	Level 2	1,823	1,823	—	—
Interest rate swap agreements – liabilities	Level 2	(35,401)	(35,401)	(75,468)	(75,468)
Cross currency swap agreements – assets	Level 2	3,895	3,895	4,505	4,505
Cross currency swap agreements – liabilities	Level 2	(20,537)	(20,537)	(20,022)	(20,022)
Non-recurring:
Vessels and equipment	Level 2	—	—	40,717	40,717
Other:
Loans to equity-accounted joint ventures (note 7)	(i)	106,301	(i)	116,632	(i)
Long-term debt – public (note 8)	Level 1	(346,246)	(354,519)	(352,260)	(359,581)
Long-term debt – non-public (note 8)	Level 2	(1,039,446)	(1,061,418)	(1,119,953)	(1,137,050)
Obligations related to finance leases (note 5a)	Level 2	(1,287,044)	(1,363,615)	(1,340,922)	(1,456,927)

(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

For a description of the Partnership's exposure to potential credit losses under ASC 326, see Item 18 – Financial Statements: Note 3b to the Partnership’s audited consolidated financial statements filed with its Annual Report on Form 20-F for the year ended December 31, 2020.

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TEEKAY LNG PARTNERS L.P. AND SUBSIDIARIES

NOTES TO THE UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

(all tabular amounts stated in thousands of U.S. Dollars, except unit and per unit data and foreign currency exchange rates or unless otherwise indicated)

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 as at September 30, 2021 and December 31, 2020.

	Amortized Cost Basis by Origination Year
	Credit Quality Grade (1)	2020	2018	2016 and prior	Total
As at September 30, 2021		$	$	$	$
Direct financing leases
Tangguh Hiri and Tangguh Sago	Performing	—	—	322,949	322,949
Bahrain Spirit	Performing	—	210,190	—	210,190
		—	210,190	322,949	533,139
Loans to equity-accounted joint ventures
Exmar LPG Joint Venture	Performing	—	—	32,266	32,266
Bahrain LNG Joint Venture	Performing	—	—	73,375	73,375
Other	Performing	660	—	—	660
		660	—	105,641	106,301
		660	210,190	428,590	639,440
As at December 31, 2020
Direct financing leases
Tangguh Hiri and Tangguh Sago	Performing	—	—	332,308	332,308
Bahrain Spirit	Performing	—	211,939	—	211,939
		—	211,939	332,308	544,247
Loans to equity-accounted joint ventures
Exmar LPG Joint Venture	Performing	—	—	42,266	42,266
Bahrain LNG Joint Venture	Performing	—	—	73,375	73,375
Other	Performing	991	—	—	991
		991	—	115,641	116,632
		991	211,939	447,949	660,879

(1)For a description of how the Partnership's credit quality grades are determined see Item 18 – Financial Statements: Note 3b to the Partnership’s audited consolidated financial statements filed with its Annual Report on Form 20-F for the year ended December 31, 2020. As at September 30, 2021 and December 31, 2020, all direct financing and sales-type leases held by the Partnership and the Partnership’s equity-accounted joint ventures had a credit quality grade of performing.

11

TEEKAY LNG PARTNERS L.P. AND SUBSIDIARIES

NOTES TO THE UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

(all tabular amounts stated in thousands of U.S. Dollars, except unit and per unit data and foreign currency exchange rates or unless otherwise indicated)

Changes in the Partnership's allowance for credit losses for the three and nine months ended September 30, 2021 and 2020 are as follows:

	Direct Financing Leases (1) (2) $	Direct Financing and Sales-Type Leases and Other within Equity-Accounted Joint Ventures (1) (2) $	Loans to Equity-Accounted Joint Ventures (1) $	Guarantees of Debt (1) $	Total $
Three and Nine Months Ended September 30, 2021
As at December 31, 2020	30,177	54,937	4,726	2,080	91,920
Provision for (reversal of) potential credit losses	4,436	6,677	(981)	218	10,350
As at March 31, 2021	34,613	61,614	3,745	2,298	102,270
Provision for (reversal of) potential credit losses	787	722	255	(298)	1,466
As at June 30, 2021	35,400	62,336	4,000	2,000	103,736
(Reversal of) provision for potential credit losses	(1,400)	(1,736)	300	(200)	(3,036)
As at September 30, 2021	34,000	60,600	4,300	1,800	100,700
Three and Nine Months Ended September 30, 2020
As at January 1, 2020	11,155	36,292	3,714	2,139	53,300
(Reversal of) provision for potential credit losses	(100)	8,980	—	—	8,880
As at March 31, 2020	11,055	45,272	3,714	2,139	62,180
Provision for (reversal of) potential credit losses	465	(423)	83	(288)	(163)
As at June 30, 2020	11,520	44,849	3,797	1,851	62,017
Provision for (reversal of) potential credit losses	13,805	7,099	877	(285)	21,496
As at September 30, 2020	25,325	51,948	4,674	1,566	83,513

(1)For a description of how the credit loss provision for direct financing leases, direct financing and sales-type leases and other within equity-accounted joint ventures, loans to equity-accounted joint ventures and guarantees of debt was determined for the three and nine months ended September 30, 2021 and 2020, see Item 18 – Financial Statements: Note 3b to the Partnership’s audited consolidated financial statements filed with its Annual Report on Form 20-F for the year ended December 31, 2020.

(2)The change in credit loss provision of $(1.4) million and $3.8 million for the Partnership's consolidated vessels for the three and nine months ended September 30, 2021, respectively ($13.8 million and $14.2 million for the three and nine months ended September 30, 2020, respectively), was included in other expense in the Partnership's consolidated statements of income. The change in the credit loss provision for the nine months ended September 30, 2021 primarily reflects a decline in the estimated charter-free valuations for certain types of its liquefied natural gas (or LNG) carriers at the end of their time-charter contract which are accounted for as direct financing leases. These estimated future charter-free values are subject to change based on the underlying LNG shipping market fundamentals and it is possible that these estimates could vary by material amounts in future periods.

The change in credit loss provision of $(1.7) million and $5.7 million for the three and nine months ended September 30, 2021, respectively ($7.1 million and $15.7 million for the three and nine months ended September 30, 2020, respectively), relating to the direct financing and sales-type leases and other within the Partnership's equity-accounted joint ventures was included in equity income in the Partnership's consolidated statements of income. The change in credit loss provision for the nine months ended September 30, 2021 primarily reflects a decline in the estimated charter-free valuations for certain types of LNG carriers at the end of their time-charter contract, which are accounted for as direct financing and sales-type leases.

The changes in the credit loss provision for the Partnership's consolidated vessels and the vessels within the Partnership's equity-accounted joint ventures for the nine months ended September 30, 2021 do not reflect any material change in expectations of the charterers' ability to make their time-charter hire payments as they come due compared to the beginning of the year.

12

TEEKAY LNG PARTNERS L.P. AND SUBSIDIARIES

NOTES TO THE UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

(all tabular amounts stated in thousands of U.S. Dollars, except unit and per unit data and foreign currency exchange rates or unless otherwise indicated)

4.    Segment Reporting

The following tables include results for the Partnership’s segments for the periods presented in these unaudited consolidated financial statements.

	Three Months Ended September 30,
	2021			2020
	LNG Segment $	LPG Segment $	Total $	LNG Segment $	LPG Segment $	Total $
Voyage revenues	133,754	12,823	146,577	138,953	9,982	148,935
Voyage expenses	(1,778)	(5,443)	(7,221)	(427)	(3,523)	(3,950)
Vessel operating expenses	(25,326)	(5,100)	(30,426)	(25,871)	(4,771)	(30,642)
Time-charter hire expenses	(5,665)	—	(5,665)	(5,980)	—	(5,980)
Depreciation and amortization	(31,294)	(1,708)	(33,002)	(30,658)	(1,943)	(32,601)
General and administrative expenses(i)	(11,691)	(928)	(12,619)	(5,704)	(461)	(6,165)
Income (loss) from vessel operations	58,000	(356)	57,644	70,313	(716)	69,597
Equity income	35,241	3,997	39,238	22,674	1,672	24,346

	Nine Months Ended September 30,
	2021			2020
	LNG Segment $	LPG Segment $	Total $	LNG Segment $	LPG Segment $	Total $
Voyage revenues	411,934	36,214	448,148	409,345	27,682	437,027
Voyage expenses	(4,748)	(16,016)	(20,764)	(2,262)	(9,334)	(11,596)
Vessel operating expenses	(78,169)	(14,882)	(93,051)	(72,562)	(12,591)	(85,153)
Time-charter hire expenses	(17,382)	—	(17,382)	(17,270)	—	(17,270)
Depreciation and amortization	(92,186)	(5,067)	(97,253)	(91,816)	(5,053)	(96,869)
General and administrative expenses(i)	(24,562)	(2,145)	(26,707)	(18,708)	(1,507)	(20,215)
Write-down of vessels	—	—	—	—	(45,000)	(45,000)
Income (loss) from vessel operations	194,887	(1,896)	192,991	206,727	(45,803)	160,924
Equity income	94,180	11,514	105,694	50,651	6,223	56,874

(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 consolidated total assets presented in the Partnership's consolidated balance sheets is as follows:    

	September 30, 2021	December 31, 2020
	$	$
Total assets of the LNG segment	4,441,653	4,395,336
Total assets of the LPG segment	248,047	246,982
Unallocated:
Cash and cash equivalents	109,596	206,762
Advances to affiliates	14,664	4,924
Consolidated total assets	4,813,960	4,854,004

13

TEEKAY LNG PARTNERS L.P. AND SUBSIDIARIES

NOTES TO THE UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

(all tabular amounts stated in thousands of U.S. Dollars, except unit and per unit data and foreign currency exchange rates or unless otherwise indicated)

5.    Chartered-in Vessels

a) Obligations related to Finance Leases

	September 30, 2021	December 31, 2020
	$	$
Total obligations related to finance leases	1,287,044	1,340,922
Less current portion	(73,437)	(71,932)
Long-term obligations related to finance leases	1,213,607	1,268,990

As at September 30, 2021 and December 31, 2020, 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 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. As at September 30, 2021, the Partnership was in compliance with all covenants in respect of the obligations related to its finance leases.

As at September 30, 2021, 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 $1.6 billion, including imputed interest of $350.2 million, repayable for the remainder of 2021 through 2034, as indicated below:

	Commitments as at September 30, 2021
Year	$
Remainder of 2021	34,420
2022	136,959
2023	135,459
2024	132,011
2025	129,725
Thereafter	1,068,641

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 (see Note 10a).

As at September 30, 2021, minimum commitments to be incurred by the Partnership relating to its time-charter-in contract with the MALT Joint Venture were approximately $6.0 million (remainder of 2021) and $11.1 million (2022). These amounts do not include commitments relating to two vessels owned by Teekay BLT Corporation (or the Tangguh Joint Venture) which are described in Note 12b.

6.    Revenue

The Partnership’s primary source of revenue is from chartering its vessels to its customers. The Partnership primarily utilizes two forms of contracts consisting of time-charter contracts and voyage 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, 2020.

14

TEEKAY LNG PARTNERS L.P. AND SUBSIDIARIES

NOTES TO THE UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

(all tabular amounts stated in thousands of U.S. Dollars, except unit and per unit data and foreign currency exchange rates or unless otherwise indicated)

Revenue Table

The following tables contain the Partnership’s revenue for the three and nine months ended September 30, 2021 and 2020, by contract type and by segment.

	Three Months Ended September 30,
	2021			2020
	LNG Segment $	LPG Segment $	Total $	LNG Segment $	LPG Segment $	Total $
Time charters	131,366	3,084	134,450	136,203	—	136,203
Voyage charters	—	9,739	9,739	—	9,982	9,982
Management fees and other income	2,388	—	2,388	2,750	—	2,750
	133,754	12,823	146,577	138,953	9,982	148,935

	Nine Months Ended September 30,
	2021			2020
	LNG Segment $	LPG Segment $	Total $	LNG Segment $	LPG Segment $	Total $
Time charters	404,792	6,890	411,682	402,509	—	402,509
Voyage charters	—	29,324	29,324	—	27,682	27,682
Management fees and other income	7,142	—	7,142	6,836	—	6,836
	411,934	36,214	448,148	409,345	27,682	437,027

The following table contains the Partnership’s revenue for the three and nine months ended September 30, 2021 and 2020, by contracts or components of contracts accounted for as leases and those not accounted for as leases:

	Three Months Ended September 30,		Nine Months Ended September 30,
	2021	2020	2021	2020
	$	$	$	$
Lease revenue
Lease revenue from lease payments of operating leases	124,312	126,678	382,615	373,566
Interest income on lease receivables	12,348	12,659	36,877	37,920
Variable lease payments - cost reimbursements(1)	1,541	1,475	4,686	3,795
	138,201	140,812	424,178	415,281
Non-lease revenue
Non-lease revenue - related to direct financing leases	5,988	5,373	16,828	14,910
Management fees and other income	2,388	2,750	7,142	6,836
	8,376	8,123	23,970	21,746
Total	146,577	148,935	448,148	437,027

(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 charter contracts accounted for as operating leases.

Net Investments in Direct Financing Leases

As at September 30, 2021 and December 31, 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, 2020.

In January 2020, Awilco purchased two LNG carriers classified as sales-type leases, the WilForce and the WilPride, from the Partnership and paid the Partnership the associated purchase obligation amounts, deferred hire amounts and interest on deferred hire amounts, totaling $260.4 million relating to these two vessels.

As at September 30, 2021, estimated lease payments to be received by the Partnership related to its direct financing leases in each of the next five years were approximately $16.1 million (remainder of 2021), $64.2 million (2022), $64.0 million (2023), $64.3 million (2024), $64.2

15

TEEKAY LNG PARTNERS L.P. AND SUBSIDIARIES

NOTES TO THE UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

(all tabular amounts stated in thousands of U.S. Dollars, except unit and per unit data and foreign currency exchange rates or unless otherwise indicated)

million (2025) and an aggregate of $446.5 million thereafter. Two leases are expected to end in 2028 and the remaining lease is scheduled to end in 2039.

Operating Leases

As at September 30, 2021, 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 $124.9 million (remainder of 2021), $389.0 million (2022), $309.9 million (2023), $252.9 million (2024), and $197.4 million (2025). 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 September 30, 2021, variable or contingent rentals, or rentals from contracts which were entered into or commenced after September 30, 2021. 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 September 30, 2021, the Partnership had $15.7 million of advanced payments recognized as contract liabilities included in unearned revenue (December 31, 2020 – $26.5 million, September 30, 2020 – $28.9 million and December 31, 2019 – $24.9 million). The Partnership recognized $14.0 million and $26.4 million of revenue for the three months ended September 30, 2021 and 2020, respectively, that was recognized as a contract liability at the beginning of such three-month periods. The Partnership recognized $26.5 million and $24.9 million of revenue for the nine months ended September 30, 2021 and 2020, respectively, that was recognized as a contract liability at the beginning of such nine-month periods.

7. 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, 2020. 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 September 30, 2021, the Partnership had advanced $32.3 million to the Exmar LPG Joint Venture (December 31, 2020 – $42.3 million), in which the Partnership has a 50% ownership interest. These advances bear interest at LIBOR plus 0.50% and have no fixed repayment terms. For the three and nine months ended September 30, 2021, interest earned on these loans amounted to $0.1 million and $0.3 million, respectively (three and nine months ended September 30, 2020 – $0.1 million and $0.7 million, respectively), and is included in interest income in the Partnership's consolidated statements of income. As of September 30, 2021 and December 31, 2020, the interest receivable on these advances was $nil. These advances were included in current portion of advances to equity-accounted joint ventures, net and in investments in and advances to equity-accounted joint ventures, net in the Partnership’s consolidated balance sheets.

b) As of September 30, 2021 and December 31, 2020, the Partnership had advanced $73.4 million to the Bahrain LNG Joint Venture, in which the Partnership has a 30% ownership interest. These advances bear interest at 6.0%. For the three and nine months ended September 30, 2021, interest earned on these advances amounted to $1.2 million and $3.6 million, respectively (three and nine months ended September 30, 2020 – $1.1 million and $3.4 million, respectively), and is included in interest income in the Partnership's consolidated statements of income. As of September 30, 2021 and December 31, 2020, the interest receivable on these advances was $8.7 million and $5.1 million, respectively. Both the advances and the accrued interest on these advances were included in investments in and advances to equity-accounted joint ventures, net in the Partnership’s consolidated balance sheets.

c) As of September 30, 2021, the Partnership had advanced $0.7 million to the Angola Joint Venture (December 31, 2020 – $1.0 million), in which the Partnership has a 33% ownership interest. These advances bear interest at LIBOR plus 1.0%. The advances were included in current portion of advances to equity-accounted joint ventures, net in the Partnership’s consolidated balance sheets.

d) The Partnership guarantees its proportionate share of certain loan facilities and obligations on interest rate swaps for certain of 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 September 30, 2021 was $1.3 billion. As at September 30, 2021, with the exception of debt service coverage ratio breaches for three of the vessels in the Angola Joint Venture, all of the Partnership's equity-accounted joint ventures were in compliance with all covenants relating to these loan facilities that the Partnership guarantees. In October 2021, the Angola Joint Venture obtained a waiver from its lenders for the covenant requirement that was not met, with such waiver being valid until the next covenant test at December 31, 2021.

16

TEEKAY LNG PARTNERS L.P. AND SUBSIDIARIES

NOTES TO THE UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

(all tabular amounts stated in thousands of U.S. Dollars, except unit and per unit data and foreign currency exchange rates or unless otherwise indicated)

8. Long-Term Debt

	September 30, 2021	December 31, 2020
	$	$
U.S. Dollar-denominated Revolving Credit Facilities due in 2022	105,000	100,000
U.S. Dollar-denominated Term Loans and Bonds due from 2021 to 2030	812,304	873,712
Norwegian Krone-denominated Bonds due from 2021 to 2025	348,630	355,514
Euro-denominated Term Loans due in 2023 and 2024	128,439	152,710
Total principal	1,394,373	1,481,936
Unamortized discount and debt issuance costs	(8,681)	(9,723)
Total debt	1,385,692	1,472,213
Less current portion	(350,372)	(250,508)
Long-term debt	1,035,320	1,221,705

As at September 30, 2021, the Partnership had two revolving credit facilities available, which, as at such date, provided for borrowings of up to $330.4 million (December 31, 2020 – $354.8 million), of which $225.4 million (December 31, 2020 – $254.8 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 $330.4 million in 2022, which is when both revolving credit facilities mature. The revolving credit facilities may be used by the Partnership for 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 the Partnership's subsidiaries of all outstanding amounts.

As at September 30, 2021, the Partnership had six U.S. Dollar-denominated term loans and bonds outstanding which totaled $812.3 million in aggregate principal amount (December 31, 2020 – $873.7 million). Interest payments on the term loans are based on LIBOR plus a margin, where margins ranged from 1.85% to 3.25% and fixed interest payments on the bonds ranging from 4.11% to 4.41%. The six combined term loans and bonds require quarterly interest and principal payments and five 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 September 30, 2021, 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.

As at September 30, 2021, and December 31, 2020, the Partnership had Norwegian Krone (or NOK) 3.1 billion of senior unsecured bonds in the Norwegian bond market that mature through 2025. As at September 30, 2021, the total amount of the bonds, which are listed on the Oslo Stock Exchange, was $348.6 million (December 31, 2020 – $355.5 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 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 5.74% to 7.89% and the transfer of principal fixed at $360.5 million upon maturity in exchange for NOK 3.1 billion (see Note 11). On October 28, 2021, the Partnership repaid NOK 1.2 billion of senior unsecured bonds that trade in the Norwegian bond market upon maturity, as well as certain related cross currency swaps (see Note 11).

The Partnership had two Euro-denominated term loans outstanding, which as at September 30, 2021, totaled 110.9 million Euros ($128.4 million) (December 31, 2020 – 125.0 million Euros ($152.7 million)). Interest payments for one of the term loans are based on the Euro Interbank Offered Rate (or EURIBOR) plus a margin. Interest payments on the remaining term loan are based on EURIBOR where EURIBOR is limited to zero or above zero values, plus a margin. Margins on the term loans ranged from 0.60% to 1.95%. The term 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.

The weighted-average interest rates for the Partnership’s long-term debt outstanding as at September 30, 2021 and December 31, 2020 were 3.25% and 3.04%, 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 gains (losses) of $2.8 million and $(7.9) million for the three months ended September 30, 2021 and 2020, respectively, and $6.9 million and $(14.7) million for the nine months ended September 30, 2021 and 2020, respectively.

The aggregate annual long-term debt principal repayments required under the Partnership's revolving credit facilities, loans and bonds subsequent to September 30, 2021 are $169.1 million (remainder of 2021), $212.3 million (2022), $233.3 million (2023), $124.4 million (2024), $185.5 million (2025) and $469.8 million (thereafter).

17

TEEKAY LNG PARTNERS L.P. AND SUBSIDIARIES

NOTES TO THE UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

(all tabular amounts stated in thousands of U.S. Dollars, except unit and per unit data and foreign currency exchange rates or unless otherwise indicated)

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 September 30, 2021, the Partnership had five credit facilities with an aggregate outstanding loan balance of $510.8 million that require it to maintain minimum vessel-value-to-outstanding-loan-principal-balance ratios of 110%, 115%, 120%, 120% and 135%, which as at September 30, 2021, were 142%, 686%, 149%, 163% and 227%, 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 and, in addition, one of the term loans in the RasGas II Joint Venture requires it to satisfy a minimum vessel value to outstanding loan principal balance ratio to pay dividends. As at September 30, 2021, the Partnership was in compliance with all covenants relating to the Partnership’s credit facilities and other long-term debt.

9. Income Tax Expense

The components of the provision for income tax expense are as follows:

	Three Months Ended September 30,		Nine Months Ended September 30,
	2021	2020	2021	2020
	$	$	$	$
Current	(1,285)	(1,927)	(3,935)	(3,308)
Deferred	(941)	507	671	1,180
Income tax expense	(2,226)	(1,420)	(3,264)	(2,128)

Included in the Partnership's current income tax 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.

10. 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 September 30,		Nine Months Ended September 30,
	2021	2020	2021	2020
	$	$	$	$
Voyage revenues (i)	9,869	9,704	29,285	27,881
Vessel operating expenses (ii)	(451)	(1,877)	(5,609)	(4,610)
Time-charter hire expenses (iii)	(5,665)	(5,980)	(17,382)	(17,270)
General and administrative expenses (iv)	(9,382)	(3,998)	(18,374)	(11,583)
Equity income (v)	609	609	1,808	1,815

(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 the Bahrain Spirit to the Bahrain LNG Joint Venture for the three and nine months ended September 30, 2021 amounted to $7.5 million and $22.1 million, respectively ($7.3 million and $21.4 million for the three and nine months ended September 30, 2020, respectively). In addition, the Partnership has an operation and maintenance contract with the Bahrain LNG Joint Venture relating to the LNG regasification terminal in Bahrain. Fees received in relation to the operation and maintenance contract from the Bahrain LNG Joint Venture for the three and nine months ended September 30, 2021 were $2.4 million and $7.2 million, respectively ($2.4 million and $6.5 million for the three and nine months ended September 30, 2020, 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. 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 nine months ended September 30, 2021 were $5.7 million and $17.4 million, respectively ($6.0 million and $17.3 million for the three and nine months ended September 30, 2020, respectively).

18

TEEKAY LNG PARTNERS L.P. AND SUBSIDIARIES

NOTES TO THE UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

(all tabular amounts stated in thousands of U.S. Dollars, except unit and per unit data and foreign currency exchange rates or unless otherwise indicated)

(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 nine months ended September 30, 2021, the Partnership charged fees of $0.6 million and $1.8 million, respectively ($0.6 million and $1.8 million for the three and nine months ended September 30, 2020, 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 September 30, 2021 and December 31, 2020, non-interest-bearing advances to affiliates totaled $14.7 million and $4.9 million, respectively, and non-interest-bearing advances from affiliates totaled $13.8 million and $11.0 million, respectively. These advances are unsecured and have no fixed repayment terms. Affiliates are entities that are under common control with the Partnership.

c)    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 newly-issued common units of the Partnership. This was treated as a non-cash transaction in the Partnership's consolidated statements of cash flows.

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)    For other transactions with the Partnership's equity-accounted joint ventures not disclosed above, please refer to Note 7.

11. 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 September 30, 2021, 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, 2023 and 2025, and to economically hedge the interest rate exposure. The following table reflects information relating to the cross currency swaps as at September 30, 2021.

		Floating Rate Receivable
Principal Amount NOK	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%	(9,932)	0.1
850,000	102,000	NIBOR	4.60%	7.89%	(10,601)	1.9
1,000,000	112,000	NIBOR	5.15%	5.74%	3,891	3.9
					(16,642)

19

TEEKAY LNG PARTNERS L.P. AND SUBSIDIARIES

NOTES TO THE UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

(all tabular amounts stated in thousands of U.S. Dollars, except unit and per unit data and foreign currency exchange rates or unless otherwise indicated)

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 September 30, 2021, 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 Interest Rate (i)
LIBOR-Based Debt:
U.S. Dollar-denominated interest rate swaps (ii)	LIBOR	181,906	816	4.4	0.7%
U.S. Dollar-denominated interest rate swaps (ii)(iii)	LIBOR	139,169	(1,963)	3.0	1.4%
U.S. Dollar-denominated interest rate swaps (ii)	LIBOR	283,729	(20,757)	2.3	3.6%
U.S. Dollar-denominated interest rate swaps (ii)	LIBOR	150,761	(7,773)	5.2	2.3%
EURIBOR-Based Debt:
Euro-denominated interest rate swaps (iv)	EURIBOR	58,613	(3,901)	1.9	3.9%
			(33,578)

(i)Excludes the margins the Partnership pays on its floating-rate term loans, which, at September 30, 2021, ranged from 0.60% to 3.25%.

(ii)Principal amount reduces quarterly.

(iii)These interest rate swaps are subject to mandatory early termination in 2024 whereby the swaps will be settled based on their fair value at that time.

(iv)Principal amount reduces monthly.

As at September 30, 2021, 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 September 30, 2021, these interest rate swaps and cross currency swaps had an aggregate fair value asset of $4.7 million (December 31, 2020 – $4.5 million) and an aggregate fair value liability of $54.9 million (December 31, 2020 – $73.7 million). As at September 30, 2021, the Partnership had $nil (December 31, 2020 – $3.8 million) on deposit as security for swap liabilities under certain master agreements. The deposit is presented in restricted cash – current and restricted cash – 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.

20

TEEKAY LNG PARTNERS L.P. AND SUBSIDIARIES

NOTES TO THE UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

(all tabular amounts stated in thousands of U.S. Dollars, except unit and per unit data and foreign currency exchange rates or unless otherwise indicated)

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.

	Current portion of derivative assets $	Derivative assets $	Accrued liabilities $	Current portion of derivative liabilities $	Derivative liabilities $
As at September 30, 2021
Derivatives designated as a cash flow hedge:
Interest rate swap agreements	—	—	(62)	(3,036)	(4,673)
Derivatives not designated as a cash flow hedge:
Interest rate swap agreements	—	1,823	(2,203)	(12,079)	(13,348)
Cross currency swap agreements	465	3,430	(740)	(11,908)	(7,889)
	465	5,253	(3,005)	(27,023)	(25,910)
As at December 31, 2020
Derivatives designated as a cash flow hedge:
Interest rate swap agreements	—	—	(70)	(3,162)	(9,631)
Derivatives not designated as a cash flow hedge:
Interest rate swap agreements	—	—	(4,823)	(42,329)	(15,453)
Cross currency swap agreements	—	4,505	(701)	(11,434)	(7,887)
	—	4,505	(5,594)	(56,925)	(32,971)

Realized and unrealized gains (losses) relating to non-designated interest rate swap agreements and foreign currency forward contracts are recognized in earnings and reported in realized and unrealized gain (loss) on non-designated derivative instruments 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 September 30,
	2021			2020
	Realized gains (losses)	Unrealized gains (losses)	Total	Realized gains (losses)	Unrealized gains (losses)	Total
	$	$	$	$	$	$
Interest rate swap agreements	(3,919)	4,020	101	(4,947)	3,620	(1,327)

	Nine Months Ended September 30,
	2021			2020
	Realized gains (losses)	Unrealized gains (losses)	Total	Realized gains (losses)	Unrealized gains (losses)	Total
	$	$	$	$	$	$
Interest rate swap agreements	(12,317)	34,178	21,861	(11,520)	(18,755)	(30,275)
Interest rate swap agreement   termination	(18,012)	—	(18,012)	—	—	—
Foreign currency forward contracts	—	—	—	(241)	202	(39)
	(30,329)	34,178	3,849	(11,761)	(18,553)	(30,314)

21

TEEKAY LNG PARTNERS L.P. AND SUBSIDIARIES

NOTES TO THE UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

(all tabular amounts stated in thousands of U.S. Dollars, except unit and per unit data and foreign currency exchange rates or unless otherwise indicated)

Realized and unrealized gains (losses) relating to cross currency swap agreements are recognized in earnings and reported in foreign currency exchange gain (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 September 30,
	2021			2020
	Realized gains (losses)	Unrealized gains (losses)	Total	Realized gains (losses)	Unrealized gains (losses)	Total
	$	$	$	$	$	$
Cross currency swap agreements	(1,595)	(3,952)	(5,547)	(1,669)	1,490	(179)

	Nine Months Ended September 30,
	2021			2020
	Realized gains (losses)	Unrealized gains (losses)	Total	Realized gains (losses)	Unrealized gains (losses)	Total
	$	$	$	$	$	$
Cross currency swap agreements	(4,233)	(1,085)	(5,318)	(4,916)	(2,169)	(7,085)
Cross currency swap agreements   maturity	—	—	—	(33,844)	—	(33,844)
	(4,233)	(1,085)	(5,318)	(38,760)	(2,169)	(40,929)

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 income (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 September 30, 2021		Three Months Ended September 30, 2020
Amount of Gain Recognized in OCI $	Amount of Loss Reclassified from Accumulated OCI to Interest Expense $	Amount of Gain Recognized in OCI $	Amount of Loss Reclassified from Accumulated OCI to Interest Expense $
1,040	(840)	616	(835)

Nine Months Ended September 30, 2021		Nine Months Ended September 30, 2020
Amount of Gain Recognized in OCI $	Amount of Loss Reclassified from Accumulated OCI to Interest Expense $	Amount of Loss Recognized in OCI $	Amount of Loss Reclassified from Accumulated OCI to Interest Expense $
5,080	(2,480)	(9,610)	(1,469)

12. Commitments and Contingencies

a) The Partnership’s share of commitments to fund equipment installation and other construction contract costs as at September 30, 2021 is as follows:

	Total $	Remainder of 2021 $	2022 $
Certain consolidated LNG carriers (i)	20,557	5,843	14,714
Bahrain LNG Joint Venture (ii)	11,339	—	11,339
	31,896	5,843	26,053

(i)In June 2019, the Partnership entered into an agreement with a contractor to supply reliquefaction equipment on certain of the Partnership's LNG carriers in 2021 and 2022, for an estimated installed cost of $53.5 million. As at September 30, 2021, the estimated remaining cost of these installations was $20.6 million.

22

TEEKAY LNG PARTNERS L.P. AND SUBSIDIARIES

NOTES TO THE UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

(all tabular amounts stated in thousands of U.S. Dollars, except unit and per unit data and foreign currency exchange rates or unless otherwise indicated)

(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 September 30, 2021, the Partnership's proportionate share of the estimated remaining cost of $11.3 million relates to the final construction installment on the LNG terminal. The Bahrain LNG Joint Venture has remaining undrawn debt financing of $23.5 million, of which $7.1 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 14d to the Partnership’s audited consolidated financial statements filed with its Annual Report on Form 20-F for the year ended December 31, 2020. 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 September 30, 2021, the carrying amount of this estimated tax indemnification obligation relating to the leasing arrangement through the Tangguh Joint Venture was $5.3 million (December 31, 2020 – $5.7 million) and was 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 $378.5 million as at September 30, 2021. This working capital deficit includes $350.4 million related to scheduled maturities and repayments of long-term debt in the 12 months following September 30, 2021. 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 cash distributions it expects to receive from its equity-accounted joint ventures, and two expected debt refinancings which the Partnership considers probable based on its history of refinancing similar debt, 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.

13. Partnership Units and Net Income Per Common Unit

As at September 30, 2021, approximately 58.7% 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 the issuance to a Teekay Corporation subsidiary of 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 attributable to the limited partners and General Partner is based on the limited partners' and General Partner’s respective ownership percentages.

Net Income Per Common Unit

Limited partners' interest in net income per common unit is determined by dividing net income, 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 distributions payable on the Series A and Series B Preferred Units for the three and nine months ended September 30, 2021 and 2020 were $6.4 million and $19.3 million, respectively.

	Three Months Ended September 30,		Nine Months Ended September 30,
	2021	2020	2021	2020
	$	$	$	$
Limited partners' interest in net income for basic and diluted net income per common unit	59,487	33,255	185,267	32,421
Weighted average number of common units (i)	87,120,897	86,951,234	87,081,753	82,010,753
Dilutive effect of unit-based compensation	112,094	89,812	136,657	99,073
Weighted average number of common units and common unit equivalents	87,232,991	87,041,046	87,218,410	82,109,826
Limited partners' interest in net income per common unit:
Basic	0.68	0.38	2.13	0.40
Diluted	0.68	0.38	2.12	0.39

(i) Includes common units related to non-forfeitable unit-based compensation.

23

TEEKAY LNG PARTNERS L.P. AND SUBSIDIARIES

NOTES TO THE UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

(all tabular amounts stated in thousands of U.S. Dollars, except unit and per unit data and foreign currency exchange rates or unless otherwise indicated)

Common Unit Repurchases

In December 2018, the Partnership announced that the General Partner's Board of Directors authorized a common unit repurchase program for the repurchase of up to $100 million of the Partnership's common units. During the nine months ended September 30, 2020, the Partnership repurchased 1.4 million common units for $15.3 million, and associated general partnership interest of $0.3 million. 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 September 30, 2021, the remaining dollar value of units that may be purchased under the program is approximately $55.8 million.

14. 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 at that time, using appraised values, primarily due to the lower near-term outlook for these types of vessels partly as a result of the economic environment at that time (including the economic impact of the COVID-19 global pandemic), as well as the Partnership receiving notification that the Partnership's then-existing commercial management agreement with a third-party commercial manager would be terminated and replaced by a new commercial management agreement in September 2020. The total impairment charge of $45.0 million was included in write-down of vessels for the nine months ended September 30, 2020 in the Partnership's consolidated statements of income.

15. Supplemental Cash Flow Information

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.

	September 30, 2021	December 31, 2020	September 30, 2020	December 31, 2019
	$	$	$	$
Cash and cash equivalents	109,596	206,762	201,036	160,221
Restricted cash – current	8,840	8,358	11,224	53,689
Restricted cash – long-term	37,191	42,823	42,577	39,381
	155,627	257,943	254,837	253,291

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.

16. Subsequent Events

On October 4, 2021, the Partnership, Teekay GP L.L.C. (or Teekay GP), an investment vehicle (or Acquiror) managed by Stonepeak Partners L.P., and a wholly-owned subsidiary of Acquiror (or Merger Sub) entered into an agreement and plan of merger (or the Merger Agreement). At the effective time of the merger (or the Merger) under the Merger Agreement, (a) each issued and outstanding common unit of the Partnership, including approximately 36.0 million common units owned by Teekay Corporation (or Teekay) (but excluding any common units owned by the Partnership, the Partnership's wholly-owned subsidiaries, Acquiror or their respective wholly-owned subsidiaries), will be converted into the right to receive cash in an amount of $17.00 per common unit and (b) Merger Sub will be merged with and into the Partnership, whereupon the Partnership will continue as the surviving entity. In addition, Teekay concurrently entered into an agreement with Acquiror whereby Teekay agreed to sell its limited liability company interest in Teekay GP for $26.4 million, which consists of $17.00 for each of the approximately 1.6 million common unit equivalents represented by the economic interest of Teekay GP's general partner interest in the Partnership. The Partnership, Teekay, and Acquiror also concurrently entered into an agreement whereby the Partnership will acquire certain restructured subsidiaries of Teekay that provide, through existing services agreements, comprehensive managerial, operational and administrative services to the Partnership and the Partnership’s subsidiaries and joint ventures for a purchase price of $3.34 million, subject to certain adjustments at closing. The Merger and related transactions have been unanimously approved by the respective Boards of Directors of Teekay GP and Teekay, as applicable, including the unanimous approval of the Conflicts Committee of Teekay GP. The Merger is expected to close on or soon after December 31, 2021, with the Merger Agreement providing that the Merger will not close prior to December 31, 2021. The Merger remains subject to approval by the holders of a majority of the Partnership's outstanding common units and the satisfaction or waiver of certain other customary closing conditions. There is no assurance that the conditions to closing will be satisfied or waived, or that the Merger and related transactions will be completed. Teekay, which currently owns approximately 41% of the Partnership's outstanding common units, has entered into a voting and support agreement by which it has agreed, among other things and subject to certain conditions, to vote in favor of the Merger. Following the Merger, the common units of the Partnership will be delisted from the New York Stock Exchange. The Series A and B preferred units of the Partnership will remain outstanding and continue to trade on the New York Stock Exchange following the Merger.

24

TEEKAY LNG PARTNERS L.P. AND SUBSIDIARIES

SEPTEMBER 30, 2021

PART I – FINANCIAL INFORMATION

ITEM 2 – MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following Management’s Discussion and Analysis of Financial Condition and Results of Operations should be read in conjunction with the unaudited consolidated financial statements and accompanying notes contained in "Item 1 – Financial Statements" of this Report on Form 6-K and with our audited consolidated financial statements contained in "Item 18 – Financial Statements" and with "Management’s Discussion and Analysis of Financial Condition and Results of Operations" in "Item 5 – Operating and Financial Review and Prospects" of our Annual Report on Form 20-F for the year ended December 31, 2020. Included in our Annual Report on Form 20-F is important information about items that you should consider when evaluating our results, information about the types of contracts we enter into and certain non-GAAP measures we utilize to measure our performance. Unless otherwise indicated, references in this Report to “we,” “us” and “our” and similar terms refer to Teekay LNG Partners L.P. and its subsidiaries.

OVERVIEW

Teekay LNG Partners L.P. is an international provider of marine transportation services for liquefied natural gas (or LNG) and liquefied petroleum gas (or LPG). As of September 30, 2021, we had a fleet of 47 LNG carriers and 28 LPG/multi-gas carriers. Our ownership interests in these vessels range from 20% to 100%. In addition to our fleet, we have a 30% ownership interest in an LNG receiving and regasification terminal in Bahrain.

SIGNIFICANT DEVELOPMENTS IN 2021

Stonepeak Transaction

On October 4, 2021, we entered into an agreement and plan of merger (or the Merger Agreement) with our general partner Teekay GP L.L.C. (or Teekay GP), an investment vehicle (or Acquiror) managed by Stonepeak Partners L.P. (or Stonepeak), and a wholly-owned subsidiary of Acquiror (or Merger Sub). At the effective time of the merger (or the Merger) under the Merger Agreement, (a) each issued and outstanding common unit of ours, including approximately 36.0 million common units owned by Teekay Corporation (or Teekay) (but excluding any common units owned by us, Acquiror or our or their respective wholly-owned subsidiaries), will be converted into the right to receive cash in an amount of $17.00 per common unit and (b) Merger Sub will be merged with and into us, whereupon we will continue as the surviving entity. In addition, Teekay concurrently entered into an agreement with Acquiror whereby Teekay agreed to sell its limited liability company interest in Teekay GP for $26.4 million, which consists of $17.00 for each of our approximately 1.6 million common unit equivalents represented by the economic interest of Teekay GP’s general partner interest in Teekay LNG. We, Teekay and Acquiror also concurrently entered into an agreement whereby we will acquire certain restructured subsidiaries of Teekay that provide, through existing services agreements, comprehensive managerial, operational and administrative services to us and our subsidiaries and joint ventures for a purchase price of $3.34 million, subject to certain adjustments at closing. The Merger and related transactions have been unanimously approved by the respective Boards of Directors of Teekay GP and Teekay, as applicable, including the unanimous approval of the Conflicts Committee of Teekay GP. The Merger is expected to close on or soon after December 31, 2021, with the Merger Agreement providing that the Merger will not close prior to December 31, 2021. The Merger remains subject to approval by the holders of a majority of our outstanding common units and the satisfaction or waiver of certain other customary closing conditions. There is no assurance that the conditions to closing will be satisfied or waived, or that the Merger and related transactions will be completed. Teekay, which currently owns approximately 41% of our outstanding common units, has entered into a voting and support agreement by which it has agreed, among other things and subject to certain conditions, to vote in favor of the Merger. Following the Merger, our common units will be delisted from the New York Stock Exchange. Our Series A and B preferred units will remain outstanding and continue to trade on the New York Stock Exchange following the Merger.

LNG Carriers Charter Contracts

In April 2021, we secured a one-year, fixed-rate charter contract for the Oak Spirit LNG carrier, which commenced in August 2021.

In March 2021, we secured a one-year, spot market-linked charter contract with a one-year extension option at a fixed rate for the Creole Spirit LNG carrier, which commenced in March 2021.

MALT LNG Carriers Charter Contracts

In March 2021, the charterer of the Arwa Spirit exercised its one-year option to extend the charter contract to May 2022 at a fixed-rate and the Methane Spirit's two-year, fixed-rate charter contract, with a one-year extension option, commenced in April 2021. We have a 52% ownership in both of these vessels.

25

Quarterly Distributions

As part of our balanced capital allocation strategy, we increased our quarterly cash distributions on our common units by 15% from $0.25 per common unit to $0.2875 per common unit commencing with the quarterly distribution paid in May 2021.

Novel Coronavirus (COVID-19) Pandemic

Although global demand for LNG and LPG has remained relatively stable, the COVID-19 global pandemic may result in reduced demand for LNG and LPG in the future. As our business primarily is the transportation of LNG and LPG on behalf of our customers, any significant decrease in demand for the cargo we transport could adversely affect demand for our vessels and services. However, as our business model is to employ our vessels primarily on long-term, fee-based charter contracts, we have not experienced, nor do we expect to experience any significant near-term impact on our results of operations or financial condition absent, among other things, customer defaults or crew health issues.

To date we have not experienced any material business interruptions or material negative impact on our cash flows as a result of the COVID-19 global pandemic. Other than being a contributing factor to the non-cash write-down of six of our multi-gas vessels during the nine months ended September 30, 2020, as described in "Item 1 – Financial Statements: Note 14 – Write-down of Vessels", and certain logistical challenges relating to crew changes across our fleet, our business remains materially unaffected by the COVID-19 global pandemic. We continue to monitor the potential impact of the COVID-19 global pandemic on us and our industry, including counterparty risk associated with our vessels under contract and the impact on vessel impairments. We have also introduced a number of measures to protect the health and safety of the crews on our vessels and our onshore staff.

Effects of the COVID-19 global pandemic may include, among others: deterioration of worldwide, regional or national economic conditions and activity and of demand for LNG and LPG; operational disruptions to us or our customers due to worker health risks and the effects of regulations, directives or practices implemented in response to the pandemic (such as travel restrictions for individuals and vessels and quarantining and physical distancing); potential delays in (a) the loading and discharging of cargo on or from our vessels, (b) vessel inspections and related certifications by class societies, customers or government agencies, (c) maintenance, modifications or repairs to, or drydocking of, our existing vessels due to worker health or other business disruptions, and (d) the timing of crew changes; reduced cash flow and financial condition, including potential liquidity constraints; potential reduced access to capital as a result of any credit tightening generally or due to declines in global financial markets; potential reduced ability to opportunistically sell any of our vessels on the second-hand market, either as a result of a lack of buyers or a general decline in the value of second-hand vessels; potential decreases in the market values of our vessels and any related impairment charges or breaches relating to vessel-to-loan financial covenants; potential disruptions, delays or cancellations in the construction of new LNG projects (including production, liquefaction, regasification, storage and distribution facilities), which could reduce our future growth opportunities; and potential deterioration in the financial condition and prospects of our customers or business partners.

Given the dynamic nature of the pandemic, including the development of variants of the virus and the levels of effectiveness and delivery of vaccines and other actions to contain or treat its impact of the virus, the duration of any potential business disruption and the related financial impact, and the effects on us and our suppliers, customers and industry, cannot be reasonably estimated at this time, and could materially affect our business, results of operations and financial condition. Please read "Item 3 - Risk Factors" of our Annual Report on Form 20-F for the year ended December 31, 2020 for more details on potential effects of the coronavirus on our business.

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RESULTS OF OPERATIONS

Summary of Consolidated Income from Vessel Operations

Our consolidated income from vessel operations increased to $193.0 million for the nine months ended September 30, 2021, compared to $160.9 million in the same period of the prior year. The primary reasons for this increase are reflected in the table below and described following the table:

•an increase of $45.0 million due to a write-down of six multi-gas carriers during the first quarter of 2020 partly as a result of the economic environment at that time (including the economic impact of the COVID-19 global pandemic);

•an increase of $13.1 million due to lower operational claims on certain of our LNG and LPG carriers; and

•an increase of $1.8 million primarily due to higher charter rates earned on our LPG carriers, partially offset by unscheduled off-hire days for certain of our multi-gas carriers due to repairs;

partially offset by:

•a decrease of $11.0 million due to 151 additional off-hire days and fuel costs related to scheduled drydockings of six LNG carriers and upgrades on certain of these vessels in 2021 compared to one LNG carrier in 2020;

•a decrease of $6.6 million primarily due to an increase in repairs and maintenance expenditures incurred;

•a decrease of $6.5 million due to higher general and administrative expenses primarily incurred in connection with the Stonepeak transaction (See "Significant Developments in 2021” above); and

•a decrease of $6.3 million due to the redeliveries of the Creole Spirit and the Oak Spirit LNG carriers and these vessels earning a lower rate upon redeployment in March 2021 and August 2021, respectively.

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Summary of Equity Income

Our equity income from equity-accounted joint ventures increased to $105.7 million for the nine months ended September 30, 2021, compared to $56.9 million in the same period of the prior year. The primary reasons for this increase are reflected in the table below and described following the table:

•an increase of $40.3 million for the nine months ended September 30, 2021 due to unrealized gains on non-designated interest rate swaps due to an increase in long-term forward LIBOR benchmark interest rates, compared to unrealized losses in the same period of the prior year due to a decrease in long-term forward LIBOR benchmark interest rates;

•an increase of $10.0 million for the nine months ended September 30, 2021 related to lower unrealized credit loss provisions primarily due to the initial unrealized credit loss provision recognized upon commencement of the sales-type lease for the Bahrain regasification terminal and associated floating storage unit (or FSU) in January 2020 in our 30%-owned joint venture in Bahrain (or the Bahrain LNG Joint Venture) and lower unrealized credit loss provisions recorded in certain of our equity-accounted joint ventures primarily due to declines in estimated charter-free vessel fair values for vessels which are servicing time-charter contracts accounted for as direct financing leases during 2020;

•an increase of $7.2 million for the nine months ended September 30, 2021 due to a decrease in interest expense resulting from lower debt balances and lower LIBOR during 2021; and

•an increase of $3.3 million primarily due to higher charter rates earned on certain LPG carriers in our 50%-owned joint venture with Exmar NV (or the Exmar LPG Joint Venture);

partially offset by:

•a decrease of $6.5 million primarily due to lower charter rates earned upon redeployment of the Marib Spirit, Arwa Spirit and Methane Spirit between May 2020 and April 2021 in our 52%-owned joint venture with Marubeni Corporation (or the MALT Joint Venture); and

•a decrease of $4.8 million primarily due to unscheduled off-hire for repairs on certain of our equity-accounted LNG carriers in our 50%-owned joint venture with China LNG Shipping (Holdings) Limited (or the Yamal LNG Joint Venture) and off-hire for scheduled drydockings for certain of our equity-accounted LNG carriers in our 33%-owned joint venture with Angola (or the Angola LNG Carriers) during the nine months ended September 30, 2021.

Liquefied Natural Gas Segment

As at September 30, 2021, our liquefied natural gas segment fleet included 47 LNG carriers and one LNG regasification terminal in Bahrain, in which our interests ranged from 20% to 100%.

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The following table compares our liquefied natural gas segment’s operating results, revenue days, calendar-ship-days and utilization for the three and nine months ended September 30, 2021 and 2020, and compares its net voyage revenues (which is a non-GAAP financial measure) for the three and nine months ended September 30, 2021 and 2020 to income from vessel operations, the most directly comparable GAAP financial measure. With the exception of equity income, all data in this table only includes the 22 LNG carriers that are accounted for under the consolidation method of accounting and the Magellan Spirit chartered-in from our 52%-owned MALT Joint Venture. A comparison of the results from vessels and assets accounted for under the equity method is described later in this section under "Equity Income".

(in thousands of U.S. Dollars, except revenue days, calendar-ship-days and percentages)	Three Months Ended September 30		% Change
	2021	2020
Voyage revenues	133,754	138,953	(3.7)
Voyage expenses	(1,778)	(427)	316.4
Net voyage revenues	131,976	138,526	(4.7)
Vessel operating expenses	(25,326)	(25,871)	(2.1)
Time-charter hire expense	(5,665)	(5,980)	(5.3)
Depreciation and amortization	(31,294)	(30,658)	2.1
General and administrative expenses(1)	(11,691)	(5,704)	105.0
Income from vessel operations	58,000	70,313	(17.5)
Equity income	35,241	22,674	55.4
Operating Data:
Revenue Days (A)	1,997	2,070	(3.5)
Calendar-Ship-Days (B)	2,116	2,116	—
Utilization (A)/(B)	94.4%	97.8%

(in thousands of U.S. Dollars, except revenue days, calendar-ship-days and percentages)	Nine Months Ended September 30		% Change
	2021	2020
Voyage revenues	411,934	409,345	0.6
Voyage expenses	(4,748)	(2,262)	109.9
Net voyage revenues	407,186	407,083	—
Vessel operating expenses	(78,169)	(72,562)	7.7
Time-charter hire expense	(17,382)	(17,270)	0.6
Depreciation and amortization	(92,186)	(91,816)	0.4
General and administrative expenses(1)	(24,562)	(18,708)	31.3
Income from vessel operations	194,887	206,727	(5.7)
Equity income	94,180	50,651	85.9
Operating Data:
Revenue Days (A)	6,072	6,253	(2.9)
Calendar-Ship-Days (B)	6,279	6,312	(0.5)
Utilization (A)/(B)	96.7%	99.1%

(1)Includes direct general and administrative expenses and indirect general and administrative expenses (allocated to each segment based on estimated use of resources). See the discussion under “Other Operating Results” below.

For the nine months ended September 30, 2021, our liquefied natural gas segment’s total calendar-ship-days decreased by 0.5% to 6,279 days, from 6,312 days for the same period of the prior year due to one less calendar day per vessel and due to the sales of the WilForce and WilPride LNG carriers in January 2020. During the nine months ended September 30, 2021, vessels in this segment were off-hire for 183 days for scheduled dry docking, 23 days for unscheduled repairs and one idle day, compared to vessels in this segment being off-hire for 32 days for scheduled dry docking and 27 days for unscheduled repairs in the same period of the prior year. As a result, our utilization decreased to 96.7% for the nine months ended September 30, 2021, compared to 99.1% for the same period of the prior year.

Net Voyage Revenues. Net voyage revenues decreased by $6.6 million for the three months ended September 30, 2021 and increased by $0.1 million for the nine months ended September 30, 2021 compared to the same periods of the prior year, primarily as a result of:

•decreases of $5.8 million and $11.0 million for the three and nine months ended September 30, 2021 due to 67 and 151 additional off-hire days, respectively, and fuel costs related to the scheduled drydockings and upgrade of certain LNG carriers; and

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•decreases of $2.6 million and $6.3 million for the three and nine months ended September 30, 2021 due to the redeliveries of the Creole Spirit and the Oak Spirit LNG carriers and these vessels earning a lower charter rate upon redeployment in March 2021 and August 2021, respectively;

partially offset by:

•increases of $1.6 million and $13.6 million for the three and nine months ended September 30, 2021 primarily due to lower operational claims on certain of our LNG carriers primarily due to favorable settlement agreements reached for certain of our LNG carriers; and

•increases of $0.5 million and $3.0 million for the three and nine months ended September 30, 2021 primarily due to foreign currency exchange gains relating to certain debt facilities as a result of appreciation of the U.S. Dollar against the Euro.

Vessel Operating Expenses. Vessel operating expenses increased by $5.6 million for the nine months ended September 30, 2021 compared to the same period of the prior year, primarily as a result of an increase in repairs and maintenance expenditures incurred on certain of our LNG carriers.

Equity Income. Equity income was $35.2 million and $94.2 million for the three and nine months ended September 30, 2021 compared to $22.7 million and $50.7 million for the same periods of the prior year as set forth in the table below:

	Equity Income (Loss) from Equity-Accounted LNG Joint Ventures
(in thousands of U.S. Dollars except percentages)	Angola LNG Carriers	Bahrain LNG Joint Venture	Exmar LNG Carriers	MALT LNG Carriers	Pan Union LNG Carriers	RasGas III LNG Carriers	Yamal LNG Carriers	Total Equity Income
Ownership Percentage	33%	30%	50%	52%	20-30%	40%	50%
Equity income for three months   ended September 30, 2021	3,952	2,736	1,211	2,918	2,171	3,480	18,773	35,241
Included in equity income:
Unrealized gains on non-      designated derivative instruments	1,868	1,951	—	—	—	—	20	3,839
Credit loss reversal (provision)	500	400	—	—	136	(100)	800	1,736
Equity income (loss) for three months   ended September 30, 2020	449	927	1,237	2,279	2,136	(1,245)	16,891	22,674
Included in equity income (loss):
Unrealized gains on non-      designated derivative instruments	1,722	546	—	—	—	—	68	2,336
Credit loss (provision) reversal	(2,993)	156	—	(49)	141	(4,682)	328	(7,099)
Difference in Equity Income (Loss)	3,503	1,809	(26)	639	35	4,725	1,882	12,567

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	Equity Income (Loss) from Equity-Accounted LNG Joint Ventures
(in thousands of U.S. Dollars except percentages)	Angola LNG Carriers	Bahrain LNG Joint Venture	Exmar LNG Carriers	MALT LNG Carriers	Pan Union LNG Carriers	RasGas III LNG Carriers	Yamal LNG Carriers	Total Equity Income
Ownership Percentage	33%	30%	50%	52%	20-30%	40%	50%
Equity income for nine months   ended September 30, 2021	9,079	9,018	3,264	7,378	6,169	6,840	52,432	94,180
Included in equity income:
Unrealized gains on non-      designated derivative instruments	5,945	9,518	—	205	—	—	534	16,202
Credit loss (provision) reversal	(1,339)	(1,388)	—	(50)	(299)	(3,550)	963	(5,663)
Equity income (loss) for nine months   ended September 30, 2020	960	(28,813)	3,436	11,952	8,509	4,471	50,136	50,651
Included in equity income (loss):
Unrealized losses on non-      designated derivative instruments	(2,094)	(20,533)	—	—	—	—	(490)	(23,117)
Credit loss (provision) reversal	(2,975)	(8,057)	—	(49)	(324)	(5,251)	1,000	(15,656)
Difference in Equity Income (Loss)	8,119	37,831	(172)	(4,574)	(2,340)	2,369	2,296	43,529

The following table summarizes our equity-accounted fleet as of September 30, 2021 and 2020. In addition, we have a 30% interest in an LNG regasification terminal in Bahrain.

	Equity-Accounted Joint Ventures - LNG Fleet Count
	Angola LNG Carriers	Exmar LNG Carriers	MALT LNG Carriers	Pan Union LNG Carriers	RasGas III LNG Carriers	Yamal LNG Carriers	Total Number of Vessels
Number of vessels as at September 30, 2021 and 2020	4	1	6	4	4	6	25

Angola LNG Carriers. The increases in equity income of $3.5 million and $8.1 million for the three and nine months ended September 30, 2021 compared to the same periods of the prior year, were primarily due to lower unrealized credit loss provisions primarily related to a provision in the third quarter of 2020 as a result of declines in estimated charter-free vessel valuations of the Angola LNG Carriers, which are servicing time-charter contracts accounted for as direct financing leases. The increase in equity income for the nine months ended September 30, 2021 was also due to unrealized gains on non-designated derivative instruments during 2021 compared to unrealized losses during 2020; partially offset by 60 off-hire days for the scheduled dry docking of three Angola LNG Carriers.

Bahrain LNG Joint Venture. The increases in equity income of $1.8 million and $37.8 million for the three and nine months ended September 30, 2021 compared to the same periods of the prior year, were primarily due to higher unrealized gains on non-designated derivative instruments. The increase in equity income for the nine months ended September 30, 2021 was also due to lower unrealized credit loss provisions in 2021 compared to the initial unrealized credit loss provision recognized during the first quarter of 2020 upon commencement of the terminal.

MALT LNG Carriers. The decrease in equity income of $4.6 million for the nine months ended September 30, 2021 compared to the same period of the prior year, was primarily due to lower charter rates upon redeployment of the Marib Spirit, Arwa Spirit and Methane Spirit between May 2020 and April 2021. The decrease was partially offset by a decrease in interest expense due to lower debt balances and lower operational claims.

Pan Union LNG Carriers. The decrease in equity income of $2.3 million for the nine months ended September 30, 2021 compared to the same period of the prior year, was primarily due to 25 unplanned off-hire days for repairs to the Pan Asia and the timing of operating expenditures.

RasGas III LNG Carriers. The increases in equity income of $4.7 million and $2.4 million for the three and nine months ended September 30, 2021 compared to the same periods of the prior year, were primarily due to lower unrealized credit loss provisions primarily related to a provision in the third quarter of 2020 as a result of declines in estimated charter-free vessel valuations of the RasGas III LNG carriers, which are servicing time-charter contracts accounted for as direct financing leases.

Yamal LNG Carriers. The increases in equity income of $1.9 million and $2.3 million for the three and nine months ended September 30, 2021 compared to the same periods of the prior year, were primarily due to a decrease in interest expense due to lower debt balances and lower operational claims. The increase in equity income for the nine months ended September 30, 2021 was also due to higher unrealized gains on non-designated derivative instruments.

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Liquefied Petroleum Gas Segment

As at September 30, 2021, our liquefied petroleum gas segment fleet included 21 LPG carriers, in which we own a 50% interest, and seven multi-gas carriers which are wholly-owned.

The following table compares our liquefied petroleum gas segment’s operating results, revenue days, calendar-ship-days and utilization for the three and nine months ended September 30, 2021 and 2020, and compares its net voyage revenues (which is a non-GAAP financial measure) for the three and nine months ended September 30, 2021 and 2020 to loss from vessel operations, the most directly comparable GAAP financial measure. With the exception of equity income, all data in this table only includes the seven multi-gas carriers that are accounted for under the consolidation method of accounting. A comparison of the results from vessels and assets accounted for under the equity method are described below under "Equity Income".

(in thousands of U.S. Dollars, except revenue days, calendar-ship-days and percentages)	Three Months Ended September 30,		% Change
	2021	2020
Voyage revenues	12,823	9,982	28.5
Voyage expenses	(5,443)	(3,523)	54.5
Net voyage revenues	7,380	6,459	14.3
Vessel operating expenses	(5,100)	(4,771)	6.9
Depreciation and amortization	(1,708)	(1,943)	(12.1)
General and administrative expenses(1)	(928)	(461)	101.3
Loss from vessel operations	(356)	(716)	(50.3)
Equity income	3,997	1,672	139.1
Operating Data:
Revenue Days (A)	644	626	2.9
Calendar-Ship-Days (B)	644	644	—
Utilization (A)/(B)	100.0%	97.2%

(in thousands of U.S. Dollars, except revenue days, calendar-ship-days and percentages)	Nine Months Ended September 30,		% Change
	2021	2020
Voyage revenues	36,214	27,682	30.8
Voyage expenses	(16,016)	(9,334)	71.6
Net voyage revenues	20,198	18,348	10.1
Vessel operating expenses	(14,882)	(12,591)	18.2
Depreciation and amortization	(5,067)	(5,053)	0.3
General and administrative expenses(1)	(2,145)	(1,507)	42.3
Write-down of vessels	—	(45,000)	(100.0)
Loss from vessel operations	(1,896)	(45,803)	(95.9)
Equity income	11,514	6,223	85.0
Operating Data:
Revenue Days (A)	1,827	1,874	(2.5)
Calendar-Ship-Days (B)	1,911	1,918	(0.4)
Utilization (A)/(B)	95.6%	97.7%

(1)Includes direct general and administrative expenses and indirect general and administrative expenses (allocated to each segment based on estimated use of resources). See the discussion under “Other Operating Results” below.

Our liquefied petroleum gas segment’s total calendar-ship-days decreased to 1,911 days for the nine months ended September 30, 2021, compared to 1,918 days for the same period of the prior year due to one less calendar day per vessel. During the nine months ended September 30, 2021 vessels in this segment were off-hire for 51 days for unscheduled repairs and for 33 days for a scheduled dry dock compared to vessels in this segment being off-hire for 44 days for scheduled dry docking and repairs in the same period of the prior year. As a result, our utilization decreased to 95.6% for the nine months ended September 30, 2021, compared to 97.7% for the same period of the prior year.

Net Voyage Revenues. Net voyage revenues increased by $0.9 million and $1.8 million for the three and nine months ended September 30, 2021 compared to the same periods of the prior year, primarily due to higher charter rates earned. The increase in net voyage revenues for the nine months ended September 30, 2021 was partially offset by unscheduled off-hire days for certain of our multi-gas carriers due to repairs.

Vessel Operating Expenses. Vessel operating expenses increased by $2.3 million for the nine months ended September 30, 2021 compared to the same period of the prior year, primarily as a result of an increase in repairs and maintenance expenditures incurred on certain of our multi-gas carriers.

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Write-down of Vessels. During the nine months ended September 30, 2020, six of our 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, partly as a result of the economic environment at that time (including the economic impact of the COVID-19 global pandemic), for a total write-down of $45.0 million.

Equity Income. Equity income from the Exmar LPG Joint Venture increased by $2.3 million and $5.3 million for three and nine months ended September 30, 2021 compared to the same periods of the prior year, primarily due to higher rates earned, fewer off-hire days for scheduled drydockings and gains on the sale of Touraine and Temse during the third quarter of 2021. Equity income also increased for the nine months ended September 30, 2021 due to higher unrealized gains on non-designated derivative instruments and a decrease in interest expense due to lower debt balances.

Other Operating Results

The following table compares our other operating results for the three and nine months ended September 30, 2021 and 2020:

	Three Months Ended		Nine Months Ended
(in thousands of U.S. Dollars)	September 30, 2021	September 30, 2020	September 30, 2021	September 30, 2020
General and administrative expenses	(12,619)	(6,165)	(26,707)	(20,215)
Interest expense	(29,513)	(30,528)	(89,249)	(102,375)
Realized and unrealized gain (loss) on non-designated derivative instruments	101	(1,327)	3,849	(30,314)
Foreign currency exchange gain (loss)	2,767	(7,853)	6,884	(14,738)
Other income (expense)	1,000	(14,149)	(3,857)	(15,189)
Income tax expense	(2,226)	(1,420)	(3,264)	(2,128)
Other comprehensive income (loss)	8,878	4,531	41,655	(57,538)

General and Administrative Expenses. General and administrative expenses increased to $12.6 million and $26.7 million for the three and nine months ended September 30, 2021 from $6.2 million and $20.2 million for the same periods of the prior year primarily due to costs incurred in connection with the planned Stonepeak transaction.

Interest Expense. Interest expense decreased to $29.5 million and $89.2 million for the three and nine months ended September 30, 2021 from $30.5 million and $102.4 million for the same periods of the prior year. Interest expense primarily reflects interest incurred on our long-term debt and obligations related to finance leases. The decrease was primarily due to a lower debt balance as a result of debt repayments and a decrease in LIBOR for the three and nine months ended September 30, 2021 compared to the same periods of the prior year.

Realized and Unrealized Gain (Loss) on Non-designated Derivative Instruments. Net realized and unrealized gains (losses) on non-designated derivative instruments were $0.1 million and $3.8 million for the three and nine months ended September 30, 2021 as compared to $(1.3) million and $(30.3) million for the same periods of the prior year. Please see “Item 1 – Financial Statements: Note 11 – Derivative Instruments and Hedging Activities" for a further breakdown of such amounts by type of derivative contract and whether such gains (losses) were realized or unrealized.

We enter into interest rate swaps which exchange a receipt of floating interest for a payment of fixed interest to reduce exposure to interest rate variability on certain of our outstanding U.S. Dollar-denominated and Euro-denominated floating rate debt. As at September 30, 2021 and 2020, we had interest rate swap agreements, excluding swap agreements held by our equity-accounted joint ventures, with aggregate average net outstanding notional amounts of approximately $803 million and $820 million, respectively, and with average fixed rates of 2.7% and 3.1%, respectively, for the respective nine-month periods then ended.

The increase in realized losses relating to our interest rate swap agreements of $18.6 million for the nine months ended September 30, 2021 compared to the same period of the prior year was primarily due to the termination of the interest rate swap agreement associated with the debt refinancing in our 70%-owned consolidated joint venture, TK BLT Corporation (or the Tangguh Joint Venture) during the first quarter of 2021.

Three and nine months ended September 30, 2021

During the three months ended September 30, 2021, we recognized unrealized gains on our interest rate swap agreements associated with our U.S. Dollar-denominated long-term debt. This resulted primarily from a reclassification of $3.2 million of previously recognized unrealized losses to realized losses related to cash settlements of our interest rate swaps.

During the three months ended September 30, 2021, we recognized unrealized gains on our interest rate swap agreements associated with our Euro-denominated long-term debt. This resulted primarily from a reclassification of $0.7 million of previously recognized unrealized losses to realized losses related to actual cash settlements of our interest rate swaps.

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During the nine months ended September 30, 2021, we recognized unrealized gains on our interest rate swap agreements associated with our U.S. Dollar-denominated long-term debt. This resulted from a reclassification of $28.2 million of previously recognized unrealized losses to realized losses related to cash settlements of our interest rate swap agreements, of which $18.0 million related to termination of interest rate swaps in the Tangguh Joint Venture, and $3.8 million of unrealized gains primarily relating to an increase in long-term forward LIBOR benchmark interest rates relative to the beginning of 2021.

During the nine months ended September 30, 2021, we recognized unrealized gains on our interest rate swap agreements associated with our Euro-denominated long-term debt. This resulted primarily from a reclassification of $2.2 million of previously recognized unrealized losses to realized losses related to actual cash settlements of our interest rate swaps.

Three and nine months ended September 30, 2020

During the three months ended September 30, 2020, we recognized unrealized gains on our interest rate swap agreements associated with our U.S. Dollar-denominated long-term debt. This resulted from a $4.2 million reclassification of previously recognized unrealized losses to realized losses related to cash settlements of our interest rate swaps partially offset by $1.2 million of unrealized losses relating to decreases in long-term forward LIBOR benchmark interest rates relative to June 30, 2020.

During the three months ended September 30, 2020, we recognized unrealized gains on our interest rate swap agreements associated with our Euro-denominated long-term debt. This resulted from a reclassification of $0.8 million of previously recognized unrealized losses to realized losses related to actual cash settlements of our interest rate swaps partially offset by $0.2 million of unrealized losses due to decreases in long-term forward EURIBOR benchmark interest rates relative to June 30, 2020.

During the nine months ended September 30, 2020, we recognized unrealized losses on our interest rate swap agreements associated with our U.S. Dollar-denominated long-term debt. This resulted from $29.7 million of unrealized losses relating to decreases in long-term forward LIBOR benchmark interest rates relative to the beginning of 2020, partially offset by a reclassification of $9.2 million of previously recognized unrealized losses to realized losses related to cash settlements of our interest rate swaps.

During the nine months ended September 30, 2020, we recognized unrealized gains on our interest rate swap agreements associated with our Euro-denominated long-term debt. This resulted from a reclassification of $2.3 million of previously recognized unrealized losses to realized losses related to actual cash settlements of our interest rate swaps partially offset by $0.6 million of unrealized losses due to decreases in long-term forward EURIBOR benchmark interest rates relative to the beginning of 2020.

Foreign Currency Exchange Gain (Loss). Foreign currency exchange gains (losses) were $2.8 million and $6.9 million for the three and nine months ended September 30, 2021 as compared to $(7.9) million and $(14.7) million for the same periods of the prior year. These foreign currency exchange gains (losses) were primarily due to the relevant period-end revaluation of our NOK-denominated debt and our Euro-denominated term loans for financial reporting purposes into U.S. Dollars, net of the realized and unrealized gains and losses on our cross currency swaps. Gains on NOK-denominated and Euro-denominated monetary liabilities reflect a stronger U.S. Dollar against the NOK and Euro on the date of revaluation or settlement compared to the rate in effect at the beginning of the period. Losses on NOK-denominated and Euro-denominated monetary liabilities reflect a weaker U.S. Dollar against the NOK and Euro on the date of revaluation or settlement compared to the rate in effect at the beginning of the period.

For the three months ended September 30, 2021, foreign currency exchange gains included unrealized gains on the revaluation of our NOK-denominated debt of $5.9 million and the revaluation of our Euro-denominated and non-U.S. Dollar-denominated cash, restricted cash, working capital and debt of $2.5 million. These gains were partially offset by unrealized losses on our cross currency swaps of $4.0 million and realized losses on our cross currency swaps of $1.6 million.

For the nine months ended September 30, 2021, foreign currency exchange gains included unrealized gains on the revaluation of our NOK-denominated debt of $6.9 million and the revaluation of our Euro-denominated and non-U.S. Dollar-denominated cash, restricted cash, working capital and debt of $5.3 million. These gains were partially offset by realized losses on our cross currency swaps of $4.2 million and unrealized losses on our cross currency swaps of $1.1 million.

For the three months ended September 30, 2020, foreign currency exchange losses included unrealized losses on the revaluation of our Euro-denominated and non U.S. Dollar-denominated cash, restricted cash, working capital and debt of $5.9 million, unrealized losses on the revaluation of our NOK-denominated debt of $1.8 million, and realized losses on our cross currency swaps of $1.7 million. These losses were partially offset by unrealized gains on our cross currency swaps of $1.5 million.

For the nine months ended September 30, 2020, foreign currency exchange losses included unrealized losses on our cross currency swaps of $35.9 million,unrealized losses on the revaluation of our Euro-denominated and non-U.S. Dollar-denominated cash, restricted cash, working capital and debt of $6.1 million, and realized losses on our cross currency swaps of $4.9 million. These losses were partially offset by unrealized gains on the revaluation of our NOK-denominated debt of $32.2 million.

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Other Income (Expense). Other income (expense) was $1.0 million and $(3.9) million for the three and nine months ended September 30, 2021 compared to $(14.1) million and $(15.2) million for the same periods of the prior year. The changes in other expense for the three and nine months ended September 30, 2021 were primarily due to an unrealized credit loss provision recognized in the third quarter of 2020 as a result of declines of estimated charter-free valuations of certain of our LNG vessels, which are servicing time-charter contracts accounted for as direct financing leases, and the impact of such declines on our expectation of the value of such vessels upon completion of their existing charter contracts. The decrease in other expense for the nine months ended September 30, 2021 is partially offset by a similar unrealized credit loss provision recognized in the first quarter of 2021.

(in thousands of U.S. Dollars)	Three Months Ended September 30,		Nine Months Ended September 30,
	2021	2020	2021	2020
Other income (expense)	1,000	(14,149)	(3,857)	(15,189)
Included in other expense:
Credit loss reversal (provision)	1,300	(14,397)	(3,117)	(14,557)

Income Tax Expense. Income tax expense increased to $2.2 million and $3.3 million for the three and nine months ended September 30, 2021 from $1.4 million and $2.1 million for the same periods of the prior year primarily due to changes in deferred tax balances related to the timing of deductions in the Tangguh Joint Venture, in which we have a 70% ownership interest.

Other Comprehensive Income (Loss). Other comprehensive income (loss) was $8.9 million and $41.7 million for the three and nine months ended September 30, 2021 as compared to $4.5 million and $(57.5) million for the same periods of the prior year due to changes in the valuation of interest rate swaps accounted for using hedge accounting within Teekay Nakilat Corporation (or the RasGas II Joint Venture), in which we own a 70% interest, and in certain of our equity-accounted joint ventures.

Liquidity and Capital Resources

Sources and Uses of Capital

We generate cash flows from the charters that our vessels service. Our business strategy is to employ a substantial majority of our vessels on fixed-rate contracts primarily with large energy companies and their transportation subsidiaries. However, our LPG vessels primarily operate on short-term time-charters or in the spot market which can contribute to volatility of our net operating cash flow. Variability in our net operating cash flows also reflects, among other factors, changes in interest rates, fluctuations in working capital balances, the timing and the amount of dry-docking expenditures, repairs and maintenance activities, the number of vessels in service and vessel acquisitions or vessel dispositions, and the timing of dividends received or return of capital from equity-accounted investments. The number of vessel dry dockings tends to vary each period depending on the vessel's maintenance schedule and required maintenance.

Our equity-accounted joint ventures are generally required to distribute all available cash to their owners. However, we do not have full control over the operations of, nor do we have any legal claim to the revenue and expenses of our investments in our equity-accounted joint ventures. Consequently, the cash flow generated by our investments in equity-accounted joint ventures may not be available for use by us in the period that such cash flows are generated. The timing and amount of dividends distributed by our equity-accounted joint ventures are affected by the timing and amounts of debt repayments in the joint ventures, capital requirements of the joint ventures, as well as any cash reserves maintained in the joint ventures for operations, capital expenditures, dry-docking expenditures and/or as required under financing agreements.

Our other sources of funds include borrowings from debt facilities, borrowings from obligations related to finance leases, net proceeds from the issuances of debt or equity securities and, to a lesser extent, the proceeds from the sales of our vessels.

Our primary uses of cash include the payment of operating expenses, dry-docking expenditures, costs associated with modifications to our vessels, committed capital expenditures, debt service costs, interest rate swap and cross currency swap settlements, scheduled repayments of long-term debt, scheduled repayments of our obligations related to finance leases, our quarterly distributions, including payments of distributions on our Series A and Series B Preferred Units and common units, and funding any common and preferred unit repurchases we may undertake, as well as funding our other working capital requirements. In addition, we use cash to acquire or build vessels to grow the size of our fleet or make investments in our equity-accounted joint ventures for them to acquire or build vessels. The timing of any newbuilding vessel or vessel acquisition activity may vary significantly from year to year.

Our revolving credit facilities, term loans and obligations related to finance leases are described in "Item 1 – Financial Statements: Note 5a – Chartered-in Vessels – Obligations related to Finance Leases" and "Item 1 – Financial Statements: Note 8 – Long-Term Debt". Our term loans, revolving credit facilities and obligations related to finance leases contain covenants and other restrictions typical of debt financing secured by vessels, which restrict the vessel-owning or lessee subsidiaries from:

•incurring or guaranteeing indebtedness;

•changing ownership or structure, including mergers, consolidations, liquidations and dissolutions;

•paying dividends or distributions if they are in default;

•making capital expenditures in excess of specified levels;

•making certain negative pledges and granting certain liens;

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•selling, transferring, assigning or conveying assets;

•making certain loans and investments; and

•entering into a new line of business.

Certain of our credit facilities require us to maintain financial covenants. If we do not meet these financial covenants, the lender or lessor may limit our ability to borrow additional funds under our credit facilities and accelerate the repayment of our revolving credit facilities, term loans and obligations related to finance leases, which would have a significant impact on our short-term liquidity requirements. As at September 30, 2021, we had five facilities with an aggregate outstanding loan balance of $510.8 million that require us to maintain minimum vessel-value-to-outstanding-loan-principal-balance ratios of 110%, 115%, 120%, 120% and 135%, which as at September 30, 2021, were 142%, 686%, 149%, 163% and 227%, respectively. The vessel values used in calculating these ratios are the appraised values provided by third parties where available, or prepared by us based on second-hand sale and purchase market data. Since vessel values can be volatile, our estimate of market value may not be indicative of either the current or future prices that could be obtained if the related vessel was actually sold. As at September 30, 2021, we were in compliance with all covenants relating to our credit facilities, term loans and finance leases. Our debt facilities and obligations related to finance leases will typically require us to make interest payments based on LIBOR, NIBOR or EURIBOR. Significant increases in interest rates could adversely affect results of operations and our ability to service our debt; however, as part of our strategy to minimize financial risk, we use interest rate swaps and cross currency swaps to reduce our exposure to market risk from changes in interest rates. Our current positions are described in further detail in "Item 1 - Financial Statements: Note 11 – Derivative Instruments and Hedging Activities and the extent of our exposure to changes in interest rates is described in further detail in Item 1 – Financial Statements: Note 5a – Chartered-in Vessels – Obligations related to Finance Leases" and "Item 1 – Financial Statements: Note 8 – Long-Term Debt".

Cash Flows. The following table summarizes our cash flows for the periods presented:

(in thousands of U.S. Dollars)	Nine Months Ended September 30,
	2021	2020
Net cash flow from operating activities	137,697	512,571
Net cash flow used for financing activities	(225,005)	(501,428)
Net cash flow used for investing activities	(15,008)	(9,597)

Operating Cash Flows. Net cash flow from operating activities decreased to $137.7 million for the nine months ended September 30, 2021, from $512.6 million for the same period of the prior year, primarily due to: $260.4 million in cash flows generated by receipts from the sale of the WilForce and WilPride sales-type leases in January 2020; $90.6 million due to the timing of settlements of non-cash working capital; $33.8 million due to the termination of an interest rate swap agreement during the nine months ended September 30, 2021; and $11.0 million due to additional off-hire related to scheduled drydockings and vessel upgrades on certain of our LNG carriers during the nine months ended September 30, 2021. These decreases were partially offset by $13.1 million due to lower operational claims on certain of our LNG and LPG carriers during the nine months ended September 30, 2021.

Financing Cash Flows. Net cash flow used for financing activities decreased to $225.0 million for the nine months ended September 30, 2021, from $501.4 million for the same period of the prior year, primarily due to: a $597.0 million decrease in debt prepayments and repayments due to the repayment of bonds and settlement of associated cross currency swaps which matured in May 2020; the prepayment of debt collateralized by the WilForce and WilPride LNG carriers upon their sales in January 2020 and the refinancing of one of our revolving credit facilities in March 2020; $15.6 million of cash used to repurchase common units during the nine months ended September 30, 2020; and $2.2 million of cash used to acquire the non-controlling interest in certain of our subsidiaries during the nine months ended September 30, 2020. These decreases in cash used for financing activities during the nine months ended September 30, 2021, were partially offset by: a $321.0 million decrease in net proceeds from the issuance of long-term debt and a $16.5 million increase in cash distributions paid during the nine months ended September 30, 2021 as a result of increases in cash distributions on common units in May 2020 and May 2021.

Investing Cash Flows. Net cash flow used for investing activities increased to $15.0 million for the nine months ended September 30, 2021, compared to $9.6 million for the same period of the prior year, primarily due to a $15.7 million increase in cash expenditures for vessels and equipment primarily related to upgrades on certain of our LNG carriers, partially offset by $10.0 million and $0.3 million repayments of advances that the Exmar LPG Joint Venture and Angola Joint Venture repaid to us in 2021, respectively.

Liquidity

Our primary sources of liquidity are cash and cash equivalents, net operating cash flow provided by our operations, cash distributions we receive from our equity-accounted joint ventures, our undrawn credit facilities, and capital raised through financing transactions. Our cash management policies have a primary objective of minimizing both the probability of loss and return volatility as well as ensuring securities purchased can be sold readily and efficiently. A secondary objective is ensuring an appropriate return. The nature and extent of amounts that can be borrowed under our revolving credit facilities is described in "Item 1 - Financial Statements: Note 8 - Long-term Debt" of this report on Form 6-K.

Our total liquidity, which consists of cash, cash equivalents and undrawn credit facilities, was $335.0 million as at September 30, 2021, compared to $461.6 million as at December 31, 2020. This decrease was primarily a result of $132.1 million of repayments and prepayments of non-revolving long-term debt and obligations related to finance leases, net of proceeds from the issuance of long-term debt, $92.3 million of cash distributions paid, a $24.4 million scheduled decrease in the borrowing capacity of our revolving credit facilities and a $15.7 million increase in cash expenditures for vessels and equipment primarily related to upgrades on certain of our LNG carriers, partially offset by $137.7 million of net operating cash flow.

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As at September 30, 2021, we had a working capital deficit of $378.5 million. This working capital deficit primarily arose from $350.4 million of long-term debt being classified as current at September 30, 2021 relating to scheduled debt maturities and repayments in the 12 months following September 30, 2021. Scheduled debt maturities include $137.2 million of NOK bonds, which matured in October 2021 and were paid with available cash and undrawn revolving credit facilities, and $105.0 million drawn under a revolving credit facility due in March 2022 which we expect to refinance to meet our minimum liquidity requirements under our financial covenants.

The following table summarizes our contractual obligations as at September 30, 2021, excluding those of our equity-accounted joint ventures, that relate to the 12-month period following such date and those in subsequent periods. Due to the capital-intensive industry in which we operate and our significant reliance on long-term borrowing, the timing of capital expenditure commitments and the timing of the repayment of debt obligations is important in understanding an assessment of our ability to generate and obtain adequate amounts of cash to meet our requirements. Our primary liquidity needs for the remainder of 2021 through the third quarter of 2022 include the payment of operating expenses, dry-docking expenditures, the funding of general working capital requirements, scheduled repayments and maturities of long-term debt and obligations related to finance leases, debt service costs, committed capital expenditures, our quarterly distributions, including payments of distributions on our Series A and Series B Preferred Units and common units and funding any common and preferred unit repurchases we may undertake. For at least the one-year period following September 30, 2021, we expect that our existing liquidity, combined with the cash flow we expect to generate from our operations, dividends we expect to receive from our equity-accounted joint ventures, and proceeds from the expected debt refinancing of our two revolving credit facilities, which we consider probable based on our history of refinancing similar debt, will be sufficient to finance our liquidity needs for this period. Our revolving credit facilities are described in further detail in "Item 1 – Financial Statements: Note 8 – Long-Term Debt". Subsequent to September 30, 2022, we have a NOK bond maturing in 2023 as noted in the table below. Our ability to have sufficient liquidity beyond September 30, 2022 will depend upon our ability to refinance this obligation which will be impacted by our financial condition and the condition of credit markets in the months leading up to the maturity date. In addition, as at September 30, 2021, we did not have any significant capital commitments related to the acquisition of new or second-hand vessels. However, we expect to bid on selected LNG projects in the future and if we are awarded any of such contracts, it is expected that we would concurrently enter into construction contracts related to new vessels. Our ability to continue to expand the size of our fleet over the long-term is dependent upon our ability to generate operating cash flow, obtain long-term bank borrowings, sale-leaseback financings and other debt, as well as our ability to raise debt or equity financing through public or private offerings.

	Total	12 Months Following September 30, 2021	Remainder of 2022	2023	2024	2025	Beyond 2025
	(in millions of U.S. Dollars)
U.S. Dollar-Denominated Obligations:
Long-term debt:(1)
Scheduled repayments	438.6	81.3	18.6	75.9	73.4	71.1	118.3
Repayments at maturity	478.7	105.0	—	—	22.1	—	351.6
Commitments related to finance leases(1) (2)	1,637.2	137.4	34.0	135.5	132.0	129.7	1,068.6
Commitments related to operating leases(3)	196.6	40.9	6.0	24.0	23.9	23.9	77.9
Equipment and other construction contract costs(4)	31.9	31.9	—	—	—	—	—
Total U.S. Dollar-denominated obligations	2,783.0	396.5	58.6	235.4	251.4	224.7	1,616.4
Euro-Denominated Obligations(5)
Long-term debt(1)	128.4	27.9	11.4	60.3	28.8	—	—
Total Euro-denominated obligations	128.4	27.9	11.4	60.3	28.8	—	—
Norwegian Krone-Denominated Obligations(5)
Long-term debt(1)	348.6	137.2	—	97.1	—	114.3	—
Total Norwegian Krone-denominated obligations	348.6	137.2	—	97.1	—	114.3	—
Totals	3,260.0	561.6	70.0	392.8	280.2	339.0	1,616.4

(1)Our interest-bearing obligations include bonds, commercial bank debt and obligations related to finance leases. Please read “Item 1 - Financial Statements: Note 5a – Chartered-in Vessels – Obligations related to Finance Leases" and “Item 1 – Financial Statements: Note 8 – Long-Term Debt” for the terms upon which future interest payments are determined as well as “Item 1 - Financial Statements: Note 11 - Derivative Instruments and Hedging Activities" for a summary of the terms of our derivative instruments which hedge certain of our floating rate interest-bearing obligations.

(2)Includes, in addition to lease payments, amounts we are required to pay to purchase the leased assets at the end of their respective lease terms.

(3)We have corresponding leases whereby we are the lessor and expect to receive approximately $180.2 million under these leases from the remainder of 2021 to 2028.

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(4)The Bahrain LNG Joint Venture, in which we have a 30% ownership interest, has an LNG receiving and regasification terminal in Bahrain. The Bahrain LNG Joint Venture completed the mechanical construction and commissioning of the Bahrain terminal in late-2019 and began receiving terminal use payments in early-2020 under its 20-year agreement with NOGA. As at September 30, 2021, our 30% share of the estimated remaining costs included in the table above is $11.3 million, of which the Bahrain LNG Joint Venture has secured undrawn debt financing of $7.1 million related to our proportionate share. In June 2019, the Partnership entered into an agreement with a contractor to supply equipment on certain of our LNG carriers in 2021 and 2022, for an estimated installed cost of $53.5 million. As at September 30, 2021, the estimated remaining costs of this installation were $20.6 million.

(5)Euro-denominated and NOK-denominated obligations are presented in U.S. Dollars and have been converted using the prevailing exchange rates as of September 30, 2021.

Other risks and uncertainties related to our liquidity include resolution of contingent liabilities as outlined in "Item 1 – Financial Statements: Note 12 – Commitments and Contingencies. We also guarantee our proportionate share of certain loan facilities and obligations on interest rate swaps for our equity-accounted joint ventures. As at September 30, 2021, this proportionate share, based on the aggregate principal amount of the loan facilities and fair value of the interest rate swaps was $1.3 billion. As at September 30, 2021, with the exception of debt service coverage ratio breaches for three of the vessels in the Angola Joint Venture, all of our equity-accounted joint ventures were in compliance with all covenants relating to these loan facilities that we guarantee. In October 2021, the Angola Joint Venture obtained a waiver from its lenders for the covenant requirement that was not met, with such waiver being valid until the next covenant test at December 31, 2021. Passage of any climate control legislation or other regulatory initiatives that restrict emissions of greenhouse gases could have a significant financial and operational impact on our business, which we cannot predict with certainty at this time. Such regulatory measures could increase our costs related to operating and maintaining our vessels and require us to install new emission controls, acquire allowances or pay taxes related to our greenhouse gas emissions, or administer and manage a greenhouse gas emissions program. In addition, increased regulation of greenhouse gases may, in the long term, lead to reduced demand for gas and reduced demand for our services.

Critical Accounting Estimates

We prepare our consolidated financial statements in accordance with GAAP, which require us to make estimates in the application of our accounting policies based on our best assumptions, judgments and opinions. On a regular basis, management reviews the accounting policies, assumptions, estimates and judgments to ensure that our consolidated financial statements are presented fairly and in accordance with GAAP. However, because future events and their effects cannot be determined with certainty, actual results could materially differ from our assumptions and estimates, and such differences could be material. Accounting estimates and assumptions discussed in "Item 5 – Operating and Financial Review and Prospects – Critical Accounting Estimates" of our Annual Report on Form 20-F for the year ended December 31, 2020, are those that we consider to be the most critical to an understanding of our financial statements, because they inherently involve significant judgments and uncertainties. For a further description of our critical accounting policies, please read "Item 5 – Operating and Financial Review and Prospects – Critical Accounting Estimates" and "Item 18 – Financial Statements: Note 1 – Summary of Significant Accounting Policies" in our Annual Report on Form 20-F for the year ended December 31, 2020. Other than what has been disclosed in "Item 1 – Financial Statements: Note 2 – Accounting Pronouncements", there have been no significant changes in accounting estimates and assumptions from those discussed our the 2020 Annual Report on Form 20-F.

Goodwill

At September 30, 2021, we had two reporting units with goodwill attributable to them. Based on conditions that existed at September 30, 2021, we do not believe that there is a reasonable possibility that the goodwill attributable to these reporting units might be impaired. However, certain factors that impact this assessment are inherently difficult to forecast and, as such, we cannot provide any assurance that an impairment will or will not occur in the future. An assessment for impairment involves a number of assumptions and estimates that are based on factors that are beyond our control. Some of these factors are discussed in more detail in the following section entitled Forward-Looking Statements.

FORWARD-LOOKING STATEMENTS

This Report on Form 6-K for the three and nine months ended September 30, 2021 contains certain forward-looking statements (as such term is defined in Section 27A of the Securities Act of 1933 as amended, and Section 21E of the Securities Exchange Act of 1934, as amended) concerning future events and our operations, performance and financial condition, including, in particular, statements regarding:

•the expected scope, duration and potential effects of the COVID-19 global pandemic and related effects on our industry and business, including, among other things, our liquidity, customer defaults, and crew health;

•the expected timing and completion of dry docking activities;

•our liquidity needs, including our anticipated funds and sources of financing for liquidity and working capital needs and the sufficiency of cash flows and our expected debt refinancing, and our estimation that we will have sufficient liquidity for at least a one-year period;

•the expected commencement of certain charter contracts;

•the expected timing and cost relating to the additional equipment to be installed for certain of our LNG carriers;

•expected exposure to interest rate volatility;

•the expected timing, completion and effects of the proposed Merger of Teekay LNG with Stonepeak and of related transactions;

•our expectation to bid on selected LNG projects in the future and our expectation to enter into any awarded construction contracts related to new vessels;

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•our expected adoption of ASU 2021-05;

•expected interest payments; and

•uncertain tax positions.

Forward-looking statements include, without limitation, any statement that may predict, forecast, indicate or imply future results, performance or achievements, and may contain the words believe, anticipate, expect, estimate, project, will be, will continue, will likely result, plan, intend or words or phrases of similar meanings. These statements involve known and unknown risks and are based upon a number of assumptions and estimates that are inherently subject to significant uncertainties and contingencies, many of which are beyond our control. Actual results may differ materially from those expressed or implied by such forward-looking statements. Important factors that could cause actual results to differ materially include, but are not limited to: the occurrence of any event, change or other circumstances that could give rise to the termination of the Merger Agreement or related transactions; the failure to obtain the common unitholder approval of the Merger or the failure to satisfy other closing conditions in the Merger Agreement or any other transaction document; the potential for regulatory authorities to require divestitures, operational remedies or other concessions in order to obtain their approval of the proposed Merger; risks related to disruption of management’s attention from our ongoing business operations due to the proposed Merger; the effect of the announcement of the proposed Merger on (i) our and Teekay’s ability to retain and hire key personnel and maintain relationships with customers or suppliers or (ii) our operating results and business generally; the proposed Merger may involve unexpected costs, liabilities or delays; the outcome of any legal proceeding relating to the proposed Merger; other risks to consummation of the proposed Merger, including the risk that it will not be consummated within the expected time period or at all, which may adversely affect our business and the price of our common units; competitive factors in the markets in which we operate; changes in the financial stability of our charterers; changes in our expenses; higher than expected costs and/or delays associated with the installation of additional equipment on certain of our LNG carriers or with the drydocking of our vessels; potential for early termination of long-term contracts and our ability to renew or replace long-term contracts; our ability to secure charter contracts for our vessels; loss of any customer, time-charter contract or vessel; changes in production or price of LNG or LPG; potential development of active short-term or spot LNG or LPG shipping markets; spot market rate fluctuations; our ability to fund our liquidity needs during the next 12 months, including our ability to access additional cash and capital and refinance our debt; our and our joint ventures’ potential inability to raise financing, to refinance our or their debt maturities, or to purchase additional vessels; our exposure to interest rate and currency exchange rate fluctuations; conditions in the public equity and debt markets; political, governmental and economic instability in the regions and markets in which we operate; changes in laws or regulations, including those relating to the regulation of greenhouse gases; the application of sanctions to us or any of our counterparties or joint venture partners; LNG or LPG project delays or abandonment; the duration and extent of the COVID-19 global pandemic and any resulting effects on the markets in which we operate; the impact of the COVID-19 global pandemic on our ability to maintain safe and efficient operations; and other factors detailed from time to time in our periodic reports filed with the SEC, including our Annual Report on Form 20-F for the year ended December 31, 2020. We do not intend to release publicly any updates or revisions to any forward-looking statements contained herein to reflect any change in our expectations with respect thereto or any change in events, conditions or circumstances on which any such statement is based.

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TEEKAY LNG PARTNERS L.P. AND SUBSIDIARIES

SEPTEMBER 30, 2021

PART II – OTHER INFORMATION

Item 1 – Legal Proceedings

None

Item 1A – Risk Factors

In addition to the other information set forth in this Report on Form 6-K, you should carefully consider the risk factors discussed in Part I, “Item 3. Key Information-Risk Factors” in our Annual Report on Form 20-F for the year ended December 31, 2020, as well as the additional risk factors below, which could materially affect our business, financial condition or results of operations.

The Merger may not be completed, due to the failure of the parties to satisfy the closing conditions or otherwise, and any such failure could negatively affect the Partnership’s common equity prices, business, financial condition, results of operations, cash flows or prospects.

The closing of the Merger is subject to the satisfaction or waiver of various closing conditions set forth in the Merger Agreement, including, among others, that:

•the holders of a majority of the Partnership’s outstanding common units will have approved the Merger;

•no statute, rule, regulation or other law (other than any antitrust, competition, trade regulation or foreign direct investment law) will have been enacted or promulgated by any government entity of competent jurisdiction which prohibits or makes illegal the consummation of the Merger, and there will not be in effect any order or injunction of any governmental entity of competent jurisdiction preventing the consummation of the Merger;

•all consents, notices and other clearances under antitrust, competition, trade regulation and any foreign direct investment laws required or reasonably advisable under applicable laws will have been obtained;

•the purchase by the Acquiror from Teekay of all of the limited liability company interests in Teekay G.P. L.L.C., the sole general partner of the Partnership, will have been consummated concurrently with the closing of the Merger;

•the purchase by the Partnership of certain restructured subsidiaries of Teekay that provide, through existing services agreements, comprehensive managerial, operational and administrative services to Partnership and the Partnership’s subsidiaries and joint ventures will have been consummated concurrently with the closing of the Merger;

•no Partnership material adverse effect will have occurred;

•all required commercial consents have been obtained by the Partnership and its subsidiaries in compliance with the terms of the Merger Agreement; and

•all required debt consents will have been obtained by the Partnership and its subsidiaries in compliance with the terms of the Merger Agreement.

No assurance can be given that each of the conditions will be satisfied. In addition, the Merger Agreement may be terminated under the circumstances described in the Merger Agreement.

In addition, the concurrent closing of the Merger is a condition to the closing of the other transactions included in the planned sale of the Teekay Gas Business, and the restructuring of the Services Companies is a condition to the closing of the purchase by Acquiror of such Services Companies.

If the Merger is not completed (including in the case the Merger Agreement is terminated), the Partnership’s ongoing business may be adversely affected. Under such a scenario, the directors, officers and the employees of Teekay, the Partnership and/or their affiliates will have expended extensive time and effort and will have experienced significant distractions from their work, and Teekay and the Partnership will have incurred significant transaction costs, during the pendency of a failed transaction. In addition, the Partnership’s continuing business relationships with business partners and the market’s perceptions of the Partnership’s prospects, could be adversely affected, which could have a material adverse impact on the trading price of the Partnership’s common units.

The Partnership could also be subject to litigation related to any failure to complete the Merger. If these risks materialize, the Partnership’s financial condition, results of operations, cash flows or prospects could be materially adversely affected.

The fact that there is a merger pending could materially harm our business, results of operations and cash flows.

While the Merger is pending, we are subject to a number of risks that may harm our business, results of operations and cash flows, including:

•the diversion of management and employee attention from implementing our business strategies;

•the fact that we have incurred, and will continue to incur, significant expenses related to the Merger prior to its closing; and

•our potential inability to respond effectively to competitive pressures, industry developments and future opportunities.

40

If the Merger Agreement is terminated in certain circumstances, the Partnership may be required to pay Acquiror a termination fee, or to reimburse certain expenses incurred by Acquiror and its affiliates in connection with the Merger transaction.

If the Merger Agreement is terminated under specified circumstances, the Partnership will be required to pay Acquiror a termination fee of approximately $44.6 million. Upon certain terminations of the Merger Agreement, the Partnership will be required (without limiting or otherwise affecting other remedies that may be available to Acquiror, including any Partnership termination fee, if payable) to reimburse Acquiror for all reasonable out-of-pocket expenses incurred by Acquiror or its affiliates in connection with the Merger Agreement and the transactions contemplated thereby, up to an aggregate amount of $10.0 million. Any such reimbursed amount will be credited against any Partnership termination fee that subsequently becomes payable to Acquiror.

If the Merger is not consummated by June 30, 2022, including under certain circumstances that may be beyond the Partnership’s control, either the Partnership or Acquiror may choose not to proceed with the Merger.

The Merger is subject to the satisfaction or waiver of various closing conditions set forth in the Merger Agreement. The fulfillment of certain of these conditions is beyond the Partnership’s control, such as the receipt of requisite common unitholder approval of the Merger and the receipt of required regulatory approvals and third-party consents and approvals. If the Merger has not been completed by June 30, 2022, either the Partnership or Parent generally may terminate the Merger Agreement, notwithstanding the prior receipt of the approval of the Merger by the common unitholders, except that such right to terminate the Merger Agreement will not be available to any party whose material breach of any representation, warranty, covenant or agreement set forth in the Merger Agreement, has been the cause of, or resulted in, the Merger not occurring on or before that date.

Item 2 – Unregistered Sales of Equity Securities and Use of Proceeds

None

Item 3 – Defaults Upon Senior Securities

None

Item 4 – Mine Safety Disclosures

None

Item 5 – Other Information

None

Item 6 – Exhibits

The following exhibits are filed as part of this Report:

4.1 Agreement and Plan of Merger, dated October 4, 2021, among Stonepeak Infrastructure Fund IV Cayman (AIV III) LP, Limestone Merger Sub, Inc., Teekay LNG Partners L.P. and Teekay GP L.L.C. (incorporated by reference to Exhibit 4.1 to our report on Form 6-K (File No. 001-32479), filed with the SEC on October 12, 2021)1

4.2 Limited Liability Company Interest Purchase Agreement, dated October 4, 2021, between Teekay Corporation and Stonepeak Infrastructure Fund IV Cayman (AIV III) LP (incorporated by reference to Exhibit 4.2 to our report on Form 6-K (File No. 001-32479), filed with the SEC on October 12, 2021)1

4.3 Voting and Support Agreement, dated October 4, 2021, among Teekay Corporation, Teekay Finance Limited and Stonepeak Infrastructure Fund IV Cayman (AIV III) LP. (incorporated by reference to Exhibit 4.3 to our report on Form 6-K (File No. 001-32479), filed with the SEC on October 12, 2021)1

(1) Previously filed as an exhibit to the Company’s Report on Form 6-K (File No. 1-12874), filed with the SEC on October 12, 2021, and hereby incorporated by reference to such Report.

THIS REPORT ON FORM 6-K IS HEREBY INCORPORATED BY REFERENCE INTO THE FOLLOWING REGISTRATION STATEMENTS OF THE PARTNERSHIP:

•REGISTRATION STATEMENT ON FORM S-8 (NO.333-124647) FILED WITH THE SEC ON MAY 5, 2005

•REGISTRATION STATEMENT ON FORM F-3 (NO.333-190783) FILED WITH THE SEC ON AUGUST 22, 2013

•REGISTRATION STATEMENT ON FORM F-3 (NO.333-225584) FILED WITH THE SEC ON JUNE 12, 2018

•REGISTRATION STATEMENT ON FORM F-3 (NO.333-238331) FILED WITH THE SEC ON MAY 18, 2020

41

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	TEEKAY LNG PARTNERS L.P.
	By:	Teekay GP L.L.C., its general partner
Date: November 10, 2021	By:	/s/ N. Angelique Burgess
	N. Angelique Burgess
	Corporate Secretary

42

XML

Document and Entity Information	9 Months Ended
	Sep. 30, 2021
Document And Entity Information [Abstract]
Document Type	6-K
Amendment Flag	false
Document Period End Date	Sep. 30, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Entity Registrant Name	Teekay LNG Partners L.P.
Entity Central Index Key	0001308106
Current Fiscal Year End Date	--12-31

XML

Unaudited Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Voyage revenues (notes 6 and 10a)	$ 146,577	$ 148,935	$ 448,148	$ 437,027
Voyage expenses	(7,221)	(3,950)	(20,764)	(11,596)
Vessel operating expenses	(30,426)	(30,642)	(93,051)	(85,153)
Time-charter hire expenses	(5,665)	(5,980)	(17,382)	(17,270)
Depreciation and amortization	(33,002)	(32,601)	(97,253)	(96,869)
General and administrative expenses	(12,619)	(6,165)	(26,707)	(20,215)
Asset Impairment Charges	0	0	0	(45,000)
Income (loss) from vessel operations	57,644	69,597	192,991	160,924
Equity income (notes 7 and 10a)	39,238	24,346	105,694	56,874
Interest expense	(29,513)	(30,528)	(89,249)	(102,375)
Interest income (note 7)	1,315	1,406	4,623	5,473
Realized and unrealized gain (loss) on non-designated derivative instruments (note 11)	101	(1,327)	3,849	(30,314)
Foreign currency exchange gain (loss) (notes 8 and 11)	2,767	(7,853)	6,884	(14,738)
Other income (expense) (note 3b)	1,000	(14,149)	(3,857)	(15,189)
Net income before income tax expense	72,552	41,492	220,935	60,655
Income tax expense (note 9)	(2,226)	(1,420)	(3,264)	(2,128)
Net income	70,326	40,072	217,671	58,527
Preferred unitholders' interest in comprehensive income	6,425	6,425	19,275	19,275
General partner's interest in net income	1,062	595	3,311	519
Limited partners’ interest in net income	$ 59,487	$ 33,255	$ 185,267	$ 32,421
Limited partners’ interest in net income per common unit (note 13):
Basic (usd per unit)	$ 0.68	$ 0.38	$ 2.13	$ 0.40
Diluted (usd per unit)	$ 0.68	$ 0.38	$ 2.12	$ 0.39
Weighted-average number of common units outstanding (note 13):
Basic (units)	87,120,897	86,951,234	87,081,753	82,010,753
Diluted (units)	87,232,991	87,041,046	87,218,410	82,109,826
Non- controlling Interest
Income Statement [Abstract]
Net income	$ 3,352	$ (203)
Non-controlling interest in net income (loss)	3,352	(203)	$ 9,818	$ 6,312
Non-controlling interest in net income (loss)	$ (3,352)	$ 203	$ (9,818)	$ (6,312)

XML

Unaudited Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net income	$ 70,326	$ 40,072	$ 217,671	$ 58,527
Other comprehensive income (loss) before reclassifications
Unrealized loss on qualifying cash flow hedging instruments, net of tax	2,942	(959)	24,001	(69,593)
Other comprehensive income (loss)	8,878	4,531	41,655	(57,538)
Comprehensive income	79,204	44,603	259,326	989
Non-controlling interest in comprehensive income (loss)	3,664	(18)	11,343	3,429
Preferred unitholders' interest in comprehensive income	6,425	6,425	19,275	19,275
General and Limited partners' interest in comprehensive income (loss)	69,115	38,196	228,708	(21,715)
Equity income
Other comprehensive income (loss) before reclassifications
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax	5,096	4,655	15,174	10,586
Interest expense
Other comprehensive income (loss) before reclassifications
Unrealized loss on qualifying cash flow hedging instruments, net of tax	1,040	616	5,080	(9,610)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax	$ 840	$ 835	$ 2,480	$ 1,469

XML

Unaudited Consolidated Balance Sheets - USD ($) shares in Thousands, $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current
Cash and cash equivalents	$ 109,596	$ 206,762
Restricted cash – current (note 15)	8,840	8,358
Accounts Receivable, after Allowance for Credit Loss, Current	16,135	7,631
Prepaid expenses	13,056	9,259
Current portion of derivative assets (note 11)	465	0
Direct Financing Lease, Net Investment in Lease, after Allowance for Credit Loss, Current	14,632	13,969
Due from Joint Ventures, Current	8,162	10,991
Advances to affiliates (note 10b)	14,664	4,924
Other current assets	5,972	237
Total current assets	191,522	262,131
Restricted cash – long-term (note 15)	37,191	42,823
Property, Plant and Equipment, Net, Excluding Capital Leased Assets	1,194,238	1,220,355
Property, Plant and Equipment, Other, Accumulated Depreciation	798,438	744,258
Accumulated Depreciation on Finance Leases	193,624	157,386
Vessels and equipment
Finance Lease, Right-of-Use Asset, after Accumulated Amortization	1,642,436	1,654,814
Operating lease right-of-use asset (note 5b)	10,338	20,750
Total vessels and equipment	2,847,012	2,895,919
Investments in and advances to equity-accounted joint ventures, net (notes 3b and 7)	1,154,202	1,056,792
Other assets	31,564	22,382
Derivative assets (note 11)	5,253	4,505
Intangible assets, net	27,868	34,510
Goodwill	34,841	34,841
Total assets	4,813,960	4,854,004
Current
Accounts payable	9,170	4,883
Accrued liabilities (note 11)	66,414	81,706
Unearned revenue (note 6)	19,488	30,254
Current portion of long-term debt (note 8)	350,372	250,508
Current obligations related to finance leases (note 5a)	73,437	71,932
Current portion of operating lease liabilities (note 5b)	10,338	14,003
Current portion of derivative liabilities (note 11)	27,023	56,925
Advances from affiliates (note 10b)	13,802	11,047
Total current liabilities	570,044	521,258
Long-term debt (note 8)	1,035,320	1,221,705
Long-term obligations related to finance leases (note 5a)	1,213,607	1,268,990
Long-term operating lease liabilities (note 5b)	0	6,747
Derivative liabilities (note 11)	25,910	32,971
Other long-term liabilities (note 12b)	57,585	56,063
Total liabilities	2,902,466	3,107,734
Commitments and contingencies (notes 5, 7, 8, 11 and 12)
Limited Partners' Capital Account, Units Issued	87,000	87,000
Preferred Units, Authorized	11,900	11,900
Equity
Limited Partners' Capital Account	$ 1,580,034	$ 1,465,408
Preferred Units, Preferred Partners' Capital Accounts	285,159	285,159
General partner	48,230	46,182
Accumulated other comprehensive loss	(63,706)	(103,836)
Partners' equity	1,849,717	1,692,913
Non-controlling interest	61,777	53,357
Total equity	1,911,494	1,746,270
Total liabilities and total equity	4,813,960	4,854,004
Accounts receivable, non-trade	10,519	5,411
Net investments in direct financing leases, net (notes 3b and 6)	$ 484,507	$ 500,101
Limited Partners - preferred units issued (in shares)	11,800	11,800

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Unaudited Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
OPERATING ACTIVITIES
Net income	$ 217,671	$ 58,527
Non-cash and non-operating items:
Unrealized (gain) loss on non-designated derivative instruments (note 11)	(34,178)	18,553
Depreciation and amortization	97,253	96,869
Write-down of vessels (note 14)	0	45,000
Unrealized foreign currency exchange (gain) loss including the effect of the settlement of cross currency swaps (note 11)	(13,125)	10,697
Income (Loss) from Equity Method Investments, Net of Dividends or Distributions	(66,605)	(24,577)
Amortization of deferred financing issuance costs included in interest expense	4,134	4,401
Provision for Loan, Lease, and Other Losses	3,117	14,557
Other Non-cash items	3,823	3,595
Receipts from direct financing and sales-type leases	11,108	270,973
Expenditures for dry docking	(10,818)	(1,984)
Other non-cash operating assets and liabilities	(74,683)	15,960
Net operating cash flow	137,697	512,571
FINANCING ACTIVITIES
Proceeds from issuance of long-term debt	237,691	561,127
Scheduled repayments of long-term debt and settlement of related swaps (note 11)	(174,415)	(220,875)
Prepayments of long-term debt	(136,543)	(687,061)
Financing issuance costs	(2,631)	(5,111)
Scheduled repayments of obligations related to finance leases	(53,878)	(52,419)
Repurchase of common units (note 13)	0	(15,635)
Payments of Ordinary Dividends	92,306	75,845
Payments of Ordinary Dividends, Noncontrolling Interest	(2,923)	(3,390)
Payments to Noncontrolling Interests	0	2,219
Net financing cash flow	(225,005)	(501,428)
INVESTING ACTIVITIES
Expenditures for vessels and equipment	(25,338)	(9,597)
Repayment of Notes Receivable from Related Parties	10,330	0
Net investing cash flow	(15,008)	(9,597)
(Decrease) increase in cash, cash equivalents and restricted cash	(102,316)	1,546
Cash, cash equivalents and restricted cash, beginning of the period	155,627	254,837
Cash, cash equivalents and restricted cash, end of the period	155,627	254,837
Proceeds from Equity Method Investment, Distribution	$ 39,089	$ 32,297

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Unaudited Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Statement of Cash Flows [Abstract]
Proceeds from Equity Method Investment, Distribution	$ 39,089	$ 32,297

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Unaudited Consolidated Statement of Changes in Total Equity - USD ($) shares in Thousands, $ in Thousands	Total	General Partner	Common Units Limited Partners	Preferred Units Limited 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 Units Limited Partners	Preferred units Series B ($0.5313 per unit)	Preferred units Series B ($0.5313 per unit) Preferred Units Limited Partners
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 Income (Loss), Net of Tax	(53,897)				(51,145)	(2,752)
Partners' Capital Account, Distributions	15,013	300	$ 14,713				$ 2,812	$ 2,812	$ 3,613	$ 3,613
Partners' Capital Account, Unit-based Payment Arrangement, Number of Units			35
Partners' Capital Account, Unit-based Payment Arrangement, Amount	212	4	$ 208
Other (note 10d)	462	12	$ 629			(179)
Repurchase of common units (note 13), units			(1,373)
Partners' Capital Account, Treasury Units, Purchased	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	58,527
Other Comprehensive Income (Loss), Net of Tax	(57,538)
Ending balance, units at Sep. 30, 2020			86,951	11,800
Ending balance at Sep. 30, 2020	1,731,547	46,081	$ 1,459,599	$ 285,159	(111,967)	52,675
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 Income (Loss), Net of Tax	(8,172)				(7,856)	(316)
Partners' Capital Account, Distributions	19,432	389	$ 19,043				$ 2,812	2,812	$ 3,613	3,613
Partners' Capital Account, Unit-based Payment Arrangement, Number of Units			6
Partners' Capital Account, Unit-based Payment Arrangement, Amount	682	13	$ 669
Issuance of common units (notes 10e and 13), units			10,750
Issuance of common units (notes 10e and 13)	0	(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
Increase (Decrease) in Partners' Capital [Roll Forward]
Common Stock, Dividends, Per Share, Declared	$ 0.19
Preferred Stock, Dividends Per Share, Declared							$ 0.5625		$ 0.5313
Net (loss) income	$ 40,072	595	33,255	$ 6,425		(203)
Other Comprehensive Income (Loss), Net of Tax	4,531				4,346	185
Partners' Capital Account, Distributions	22,125	389	21,736				$ 2,812	2,812	$ 3,613	3,613
Partners' Capital Account, Sale of Units	397	7	$ 390
Repurchase of common units (note 13), units			23
Ending balance, units at Sep. 30, 2020			86,951	11,800
Ending balance at Sep. 30, 2020	$ 1,731,547	46,081	$ 1,459,599	$ 285,159	(111,967)	52,675
Increase (Decrease) in Partners' Capital [Roll Forward]
Common Stock, Dividends, Per Share, Declared	$ 0.25
Preferred Stock, Dividends Per Share, Declared							$ 0.5625		$ 0.5313
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	$ (3,390)
Beginning balance, units at Dec. 31, 2020			86,951	11,800
Beginning balance at Dec. 31, 2020	1,746,270	46,182	$ 1,465,408	$ 285,159	(103,836)	53,357
Increase (Decrease) in Partners' Capital [Roll Forward]
Net (loss) income	91,067	1,426	79,740	$ 6,425		3,476
Other Comprehensive Income (Loss), Net of Tax	43,804				42,461	1,343
Partners' Capital Account, Distributions	22,127	389	$ 21,738				$ 2,812	2,812	$ 3,613	3,613
Partners' Capital Account, Unit-based Payment Arrangement, Number of Units			13
Partners' Capital Account, Unit-based Payment Arrangement, Amount	342	6	$ 336
Ending balance, units at Mar. 31, 2021			86,964	11,800
Ending balance at Mar. 31, 2021	1,852,931	47,225	$ 1,523,746	$ 285,159	(61,375)	58,176
Beginning balance, units at Dec. 31, 2020			86,951	11,800
Beginning balance at Dec. 31, 2020	1,746,270	46,182	$ 1,465,408	$ 285,159	(103,836)	53,357
Increase (Decrease) in Partners' Capital [Roll Forward]
Net (loss) income	217,671
Other Comprehensive Income (Loss), Net of Tax	41,655
Ending balance, units at Sep. 30, 2021			87,010	11,800
Ending balance at Sep. 30, 2021	1,911,494	48,230	$ 1,580,034	$ 285,159	(63,706)	61,777
Beginning balance, units at Mar. 31, 2021			86,964	11,800
Beginning balance at Mar. 31, 2021	1,852,931	47,225	$ 1,523,746	$ 285,159	(61,375)	58,176
Increase (Decrease) in Partners' Capital [Roll Forward]
Net (loss) income	56,278	823	46,040	$ 6,425		2,990
Other Comprehensive Income (Loss), Net of Tax	(11,027)				(10,897)	(130)
Partners' Capital Account, Distributions	25,449	447	$ 25,002				$ 2,812	2,812	$ 3,613	3,613
Partners' Capital Account, Unit-based Payment Arrangement, Number of Units			20
Partners' Capital Account, Unit-based Payment Arrangement, Amount	676	12	$ 664
Ending balance, units at Jun. 30, 2021			86,984	11,800
Ending balance at Jun. 30, 2021	$ 1,864,314	47,613	$ 1,545,448	$ 285,159	(72,272)	58,366
Increase (Decrease) in Partners' Capital [Roll Forward]
Common Stock, Dividends, Per Share, Declared	$ 0.25
Preferred Stock, Dividends Per Share, Declared							$ 0.5625		$ 0.5313
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	$ (2,670)
Net (loss) income	70,326	1,062	59,487	$ 6,425		3,352
Other Comprehensive Income (Loss), Net of Tax	8,878				8,566	312
Partners' Capital Account, Distributions	25,455	447	$ 25,008				$ 2,812	$ 2,812	$ 3,613	$ 3,613
Partners' Capital Account, Unit-based Payment Arrangement, Number of Units			26
Partners' Capital Account, Unit-based Payment Arrangement, Amount	109	2	$ 107
Ending balance, units at Sep. 30, 2021			87,010	11,800
Ending balance at Sep. 30, 2021	$ 1,911,494	$ 48,230	$ 1,580,034	$ 285,159	$ (63,706)	$ 61,777
Increase (Decrease) in Partners' Capital [Roll Forward]
Common Stock, Dividends, Per Share, Declared	$ 0.2875
Preferred Stock, Dividends Per Share, Declared							$ 0.5625		$ 0.5313
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	$ (253)

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Supplemental Cash Flow Information

9 Months Ended

Sep. 30, 2021

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

Supplemental Cash Flow Information

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.

	September 30, 2021	December 31, 2020	September 30, 2020	December 31, 2019
	$	$	$	$
Cash and cash equivalents	109,596	206,762	201,036	160,221
Restricted cash – current	8,840	8,358	11,224	53,689
Restricted cash – long-term	37,191	42,823	42,577	39,381
	155,627	257,943	254,837	253,291

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.

XML

Supplemental Cash Flow Information Schedule

9 Months Ended

Sep. 30, 2021

Supplemental Cash Flow Elements [Abstract]

Schedule of Cash and Cash Equivalents

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.

	September 30, 2021	December 31, 2020	September 30, 2020	December 31, 2019
	$	$	$	$
Cash and cash equivalents	109,596	206,762	201,036	160,221
Restricted cash – current	8,840	8,358	11,224	53,689
Restricted cash – long-term	37,191	42,823	42,577	39,381
	155,627	257,943	254,837	253,291

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.

XML

Supplemental Cash Flow Information Schedule of Reconciliation of Cash, Cash Equivalents and Restricted Cash - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019
Supplemental Cash Flow Elements [Abstract]
Cash and cash equivalents	$ 109,596	$ 206,762	$ 201,036	$ 160,221
Restricted cash – current	8,840	8,358	11,224	53,689
Restricted cash – long-term	37,191	42,823	42,577	39,381
Total	$ 155,627	$ 257,943	$ 254,837	$ 253,291

XML

Basis of Presentation

9 Months Ended

Sep. 30, 2021

Accounting Policies [Abstract]

Basis of Presentation and Significant Accounting Policies

The unaudited interim consolidated financial statements (or unaudited 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 consolidated financial statements should be read in conjunction with the Partnership’s audited consolidated financial statements for the year ended December 31, 2020, which were included in the Partnership’s Annual Report on Form 20-F for the year ended December 31, 2020 filed with the U.S. Securities and Exchange Commission (or SEC) on April 1, 2021. In the opinion of management of Teekay GP L.L.C., the general partner of the Partnership (or the General Partner), these unaudited 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.

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 and derivative assets 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. While the Partnership has experienced some logistical challenges across its fleet due to COVID-19, the Partnership has not yet experienced any material negative financial impacts to its results of operations or financial position for the periods covered by these consolidated financial statements as a result of COVID-19, other than the COVID-19 global pandemic being a contributing factor to the write-down of six of the Partnership's multi-gas vessels during the nine months ended September 30, 2020 as described in Note 14. Given the dynamic nature of the COVID-19 global pandemic, the full extent to which the COVID-19 global pandemic may have material direct or indirect impact on the Partnership's business and the related financial reporting implications cannot be reasonably estimated at this time, although it could materially affect the business, results of operations and financial condition in the future.

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Accounting Pronouncements

9 Months Ended

Sep. 30, 2021

Accounting Changes and Error Corrections [Abstract]

Accounting Pronouncements

Accounting Pronouncements

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 Partnership adopted this update on January 1, 2021. The adoption did not have an impact on the Partnership's consolidated financial statements and related disclosures.

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. 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.

In July 2021, the FASB issued ASU 2021-05 - Leases (Topic 842) Lessors — Certain Leases with Variable Lease Payments (or ASU 2021-05). Pursuant to ASU 2021-05, lessors should classify and account for a lease with variable lease payments that do not depend on a reference index or a rate as an operating lease if, without reference to ASU 2012-05, the lease would have been classified as a sales-type lease or a direct financing lease and a day-one loss would have been recognized. The Partnership expects to adopt ASU 2021-05 on January 1, 2022, although earlier application is permitted. This ASU can be adopted either (1) retrospectively to leases that commenced or were modified on or after January 1, 2019 or (2) prospectively to leases that commence or are modified on or after the date that an entity first applies the amendments. The Partnership is currently evaluating the effect of adopting this new guidance.

New Accounting Pronouncements, Policy [Policy Text Block]

Accounting Pronouncements

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 Partnership adopted this update on January 1, 2021. The adoption did not have an impact on the Partnership's consolidated financial statements and related disclosures.

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. 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.

In July 2021, the FASB issued ASU 2021-05 - Leases (Topic 842) Lessors — Certain Leases with Variable Lease Payments (or ASU 2021-05). Pursuant to ASU 2021-05, lessors should classify and account for a lease with variable lease payments that do not depend on a reference index or a rate as an operating lease if, without reference to ASU 2012-05, the lease would have been classified as a sales-type lease or a direct financing lease and a day-one loss would have been recognized. The Partnership expects to adopt ASU 2021-05 on January 1, 2022, although earlier application is permitted. This ASU can be adopted either (1) retrospectively to leases that commenced or were modified on or after January 1, 2019 or (2) prospectively to leases that commence or are modified on or after the date that an entity first applies the amendments. The Partnership is currently evaluating the effect of adopting this new guidance.

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Financial Instruments

9 Months Ended

Sep. 30, 2021

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, 2020. 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.

		September 30, 2021		December 31, 2020
	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 15)	Level 1	155,627	155,627	257,943	257,943
Derivative instruments (note 11)
Interest rate swap agreements – assets	Level 2	1,823	1,823	—	—
Interest rate swap agreements – liabilities	Level 2	(35,401)	(35,401)	(75,468)	(75,468)
Cross currency swap agreements – assets	Level 2	3,895	3,895	4,505	4,505
Cross currency swap agreements – liabilities	Level 2	(20,537)	(20,537)	(20,022)	(20,022)
Non-recurring:
Vessels and equipment	Level 2	—	—	40,717	40,717
Other:
Loans to equity-accounted joint ventures (note 7)	(i)	106,301	(i)	116,632	(i)
Long-term debt – public (note 8)	Level 1	(346,246)	(354,519)	(352,260)	(359,581)
Long-term debt – non-public (note 8)	Level 2	(1,039,446)	(1,061,418)	(1,119,953)	(1,137,050)
Obligations related to finance leases (note 5a)	Level 2	(1,287,044)	(1,363,615)	(1,340,922)	(1,456,927)

(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

For a description of the Partnership's exposure to potential credit losses under ASC 326, see Item 18 – Financial Statements: Note 3b to the Partnership’s audited consolidated financial statements filed with its Annual Report on Form 20-F for the year ended December 31, 2020.

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 as at September 30, 2021 and December 31, 2020.

	Amortized Cost Basis by Origination Year
	Credit Quality Grade (1)	2020	2018	2016 and prior	Total
As at September 30, 2021		$	$	$	$
Direct financing leases
Tangguh Hiri and Tangguh Sago	Performing	—	—	322,949	322,949
Bahrain Spirit	Performing	—	210,190	—	210,190
		—	210,190	322,949	533,139
Loans to equity-accounted joint ventures
Exmar LPG Joint Venture	Performing	—	—	32,266	32,266
Bahrain LNG Joint Venture	Performing	—	—	73,375	73,375
Other	Performing	660	—	—	660
		660	—	105,641	106,301
		660	210,190	428,590	639,440
As at December 31, 2020
Direct financing leases
Tangguh Hiri and Tangguh Sago	Performing	—	—	332,308	332,308
Bahrain Spirit	Performing	—	211,939	—	211,939
		—	211,939	332,308	544,247
Loans to equity-accounted joint ventures
Exmar LPG Joint Venture	Performing	—	—	42,266	42,266
Bahrain LNG Joint Venture	Performing	—	—	73,375	73,375
Other	Performing	991	—	—	991
		991	—	115,641	116,632
		991	211,939	447,949	660,879

(1)For a description of how the Partnership's credit quality grades are determined see Item 18 – Financial Statements: Note 3b to the Partnership’s audited consolidated financial statements filed with its Annual Report on Form 20-F for the year ended December 31, 2020. As at September 30, 2021 and December 31, 2020, all direct financing and sales-type leases held by the Partnership and the Partnership’s equity-accounted joint ventures had a credit quality grade of performing.

Changes in the Partnership's allowance for credit losses for the three and nine months ended September 30, 2021 and 2020 are as follows:

	Direct Financing Leases (1) (2) $	Direct Financing and Sales-Type Leases and Other within Equity-Accounted Joint Ventures (1) (2) $	Loans to Equity-Accounted Joint Ventures (1) $	Guarantees of Debt (1) $	Total $
Three and Nine Months Ended September 30, 2021
As at December 31, 2020	30,177	54,937	4,726	2,080	91,920
Provision for (reversal of) potential credit losses	4,436	6,677	(981)	218	10,350
As at March 31, 2021	34,613	61,614	3,745	2,298	102,270
Provision for (reversal of) potential credit losses	787	722	255	(298)	1,466
As at June 30, 2021	35,400	62,336	4,000	2,000	103,736
(Reversal of) provision for potential credit losses	(1,400)	(1,736)	300	(200)	(3,036)
As at September 30, 2021	34,000	60,600	4,300	1,800	100,700
Three and Nine Months Ended September 30, 2020
As at January 1, 2020	11,155	36,292	3,714	2,139	53,300
(Reversal of) provision for potential credit losses	(100)	8,980	—	—	8,880
As at March 31, 2020	11,055	45,272	3,714	2,139	62,180
Provision for (reversal of) potential credit losses	465	(423)	83	(288)	(163)
As at June 30, 2020	11,520	44,849	3,797	1,851	62,017
Provision for (reversal of) potential credit losses	13,805	7,099	877	(285)	21,496
As at September 30, 2020	25,325	51,948	4,674	1,566	83,513

(1)For a description of how the credit loss provision for direct financing leases, direct financing and sales-type leases and other within equity-accounted joint ventures, loans to equity-accounted joint ventures and guarantees of debt was determined for the three and nine months ended September 30, 2021 and 2020, see Item 18 – Financial Statements: Note 3b to the Partnership’s audited consolidated financial statements filed with its Annual Report on Form 20-F for the year ended December 31, 2020.

(2)The change in credit loss provision of $(1.4) million and $3.8 million for the Partnership's consolidated vessels for the three and nine months ended September 30, 2021, respectively ($13.8 million and $14.2 million for the three and nine months ended September 30, 2020, respectively), was included in other expense in the Partnership's consolidated statements of income. The change in the credit loss provision for the nine months ended September 30, 2021 primarily reflects a decline in the estimated charter-free valuations for certain types of its liquefied natural gas (or LNG) carriers at the end of their time-charter contract which are accounted for as direct financing leases. These estimated future charter-free values are subject to change based on the underlying LNG shipping market fundamentals and it is possible that these estimates could vary by material amounts in future periods.

The change in credit loss provision of $(1.7) million and $5.7 million for the three and nine months ended September 30, 2021, respectively ($7.1 million and $15.7 million for the three and nine months ended September 30, 2020, respectively), relating to the direct financing and sales-type leases and other within the Partnership's equity-accounted joint ventures was included in equity income in the Partnership's consolidated statements of income. The change in credit loss provision for the nine months ended September 30, 2021 primarily reflects a decline in the estimated charter-free valuations for certain types of LNG carriers at the end of their time-charter contract, which are accounted for as direct financing and sales-type leases.

The changes in the credit loss provision for the Partnership's consolidated vessels and the vessels within the Partnership's equity-accounted joint ventures for the nine months ended September 30, 2021 do not reflect any material change in expectations of the charterers' ability to make their time-charter hire payments as they come due compared to the beginning of the year.

Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring

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, 2020. 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.

		September 30, 2021		December 31, 2020
	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 15)	Level 1	155,627	155,627	257,943	257,943
Derivative instruments (note 11)
Interest rate swap agreements – assets	Level 2	1,823	1,823	—	—
Interest rate swap agreements – liabilities	Level 2	(35,401)	(35,401)	(75,468)	(75,468)
Cross currency swap agreements – assets	Level 2	3,895	3,895	4,505	4,505
Cross currency swap agreements – liabilities	Level 2	(20,537)	(20,537)	(20,022)	(20,022)
Non-recurring:
Vessels and equipment	Level 2	—	—	40,717	40,717
Other:
Loans to equity-accounted joint ventures (note 7)	(i)	106,301	(i)	116,632	(i)
Long-term debt – public (note 8)	Level 1	(346,246)	(354,519)	(352,260)	(359,581)
Long-term debt – non-public (note 8)	Level 2	(1,039,446)	(1,061,418)	(1,119,953)	(1,137,050)
Obligations related to finance leases (note 5a)	Level 2	(1,287,044)	(1,363,615)	(1,340,922)	(1,456,927)

(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.

Credit Loss, Financial Instrument

b) Credit Losses

For a description of the Partnership's exposure to potential credit losses under ASC 326, see Item 18 – Financial Statements: Note 3b to the Partnership’s audited consolidated financial statements filed with its Annual Report on Form 20-F for the year ended December 31, 2020.

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 as at September 30, 2021 and December 31, 2020.

	Amortized Cost Basis by Origination Year
	Credit Quality Grade (1)	2020	2018	2016 and prior	Total
As at September 30, 2021		$	$	$	$
Direct financing leases
Tangguh Hiri and Tangguh Sago	Performing	—	—	322,949	322,949
Bahrain Spirit	Performing	—	210,190	—	210,190
		—	210,190	322,949	533,139
Loans to equity-accounted joint ventures
Exmar LPG Joint Venture	Performing	—	—	32,266	32,266
Bahrain LNG Joint Venture	Performing	—	—	73,375	73,375
Other	Performing	660	—	—	660
		660	—	105,641	106,301
		660	210,190	428,590	639,440
As at December 31, 2020
Direct financing leases
Tangguh Hiri and Tangguh Sago	Performing	—	—	332,308	332,308
Bahrain Spirit	Performing	—	211,939	—	211,939
		—	211,939	332,308	544,247
Loans to equity-accounted joint ventures
Exmar LPG Joint Venture	Performing	—	—	42,266	42,266
Bahrain LNG Joint Venture	Performing	—	—	73,375	73,375
Other	Performing	991	—	—	991
		991	—	115,641	116,632
		991	211,939	447,949	660,879

(1)For a description of how the Partnership's credit quality grades are determined see Item 18 – Financial Statements: Note 3b to the Partnership’s audited consolidated financial statements filed with its Annual Report on Form 20-F for the year ended December 31, 2020. As at September 30, 2021 and December 31, 2020, all direct financing and sales-type leases held by the Partnership and the Partnership’s equity-accounted joint ventures had a credit quality grade of performing.

Changes in the Partnership's allowance for credit losses for the three and nine months ended September 30, 2021 and 2020 are as follows:

	Direct Financing Leases (1) (2) $	Direct Financing and Sales-Type Leases and Other within Equity-Accounted Joint Ventures (1) (2) $	Loans to Equity-Accounted Joint Ventures (1) $	Guarantees of Debt (1) $	Total $
Three and Nine Months Ended September 30, 2021
As at December 31, 2020	30,177	54,937	4,726	2,080	91,920
Provision for (reversal of) potential credit losses	4,436	6,677	(981)	218	10,350
As at March 31, 2021	34,613	61,614	3,745	2,298	102,270
Provision for (reversal of) potential credit losses	787	722	255	(298)	1,466
As at June 30, 2021	35,400	62,336	4,000	2,000	103,736
(Reversal of) provision for potential credit losses	(1,400)	(1,736)	300	(200)	(3,036)
As at September 30, 2021	34,000	60,600	4,300	1,800	100,700
Three and Nine Months Ended September 30, 2020
As at January 1, 2020	11,155	36,292	3,714	2,139	53,300
(Reversal of) provision for potential credit losses	(100)	8,980	—	—	8,880
As at March 31, 2020	11,055	45,272	3,714	2,139	62,180
Provision for (reversal of) potential credit losses	465	(423)	83	(288)	(163)
As at June 30, 2020	11,520	44,849	3,797	1,851	62,017
Provision for (reversal of) potential credit losses	13,805	7,099	877	(285)	21,496
As at September 30, 2020	25,325	51,948	4,674	1,566	83,513

(1)For a description of how the credit loss provision for direct financing leases, direct financing and sales-type leases and other within equity-accounted joint ventures, loans to equity-accounted joint ventures and guarantees of debt was determined for the three and nine months ended September 30, 2021 and 2020, see Item 18 – Financial Statements: Note 3b to the Partnership’s audited consolidated financial statements filed with its Annual Report on Form 20-F for the year ended December 31, 2020.

(2)The change in credit loss provision of $(1.4) million and $3.8 million for the Partnership's consolidated vessels for the three and nine months ended September 30, 2021, respectively ($13.8 million and $14.2 million for the three and nine months ended September 30, 2020, respectively), was included in other expense in the Partnership's consolidated statements of income. The change in the credit loss provision for the nine months ended September 30, 2021 primarily reflects a decline in the estimated charter-free valuations for certain types of its liquefied natural gas (or LNG) carriers at the end of their time-charter contract which are accounted for as direct financing leases. These estimated future charter-free values are subject to change based on the underlying LNG shipping market fundamentals and it is possible that these estimates could vary by material amounts in future periods.

The change in credit loss provision of $(1.7) million and $5.7 million for the three and nine months ended September 30, 2021, respectively ($7.1 million and $15.7 million for the three and nine months ended September 30, 2020, respectively), relating to the direct financing and sales-type leases and other within the Partnership's equity-accounted joint ventures was included in equity income in the Partnership's consolidated statements of income. The change in credit loss provision for the nine months ended September 30, 2021 primarily reflects a decline in the estimated charter-free valuations for certain types of LNG carriers at the end of their time-charter contract, which are accounted for as direct financing and sales-type leases.

The changes in the credit loss provision for the Partnership's consolidated vessels and the vessels within the Partnership's equity-accounted joint ventures for the nine months ended September 30, 2021 do not reflect any material change in expectations of the charterers' ability to make their time-charter hire payments as they come due compared to the beginning of the year.

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Segment Reporting

9 Months Ended

Sep. 30, 2021

Segment Reporting [Abstract]

Segment Reporting

Segment Reporting

The following tables include results for the Partnership’s segments for the periods presented in these unaudited consolidated financial statements.

	Three Months Ended September 30,
	2021			2020
	LNG Segment $	LPG Segment $	Total $	LNG Segment $	LPG Segment $	Total $
Voyage revenues	133,754	12,823	146,577	138,953	9,982	148,935
Voyage expenses	(1,778)	(5,443)	(7,221)	(427)	(3,523)	(3,950)
Vessel operating expenses	(25,326)	(5,100)	(30,426)	(25,871)	(4,771)	(30,642)
Time-charter hire expenses	(5,665)	—	(5,665)	(5,980)	—	(5,980)
Depreciation and amortization	(31,294)	(1,708)	(33,002)	(30,658)	(1,943)	(32,601)
General and administrative expenses(i)	(11,691)	(928)	(12,619)	(5,704)	(461)	(6,165)
Income (loss) from vessel operations	58,000	(356)	57,644	70,313	(716)	69,597
Equity income	35,241	3,997	39,238	22,674	1,672	24,346

	Nine Months Ended September 30,
	2021			2020
	LNG Segment $	LPG Segment $	Total $	LNG Segment $	LPG Segment $	Total $
Voyage revenues	411,934	36,214	448,148	409,345	27,682	437,027
Voyage expenses	(4,748)	(16,016)	(20,764)	(2,262)	(9,334)	(11,596)
Vessel operating expenses	(78,169)	(14,882)	(93,051)	(72,562)	(12,591)	(85,153)
Time-charter hire expenses	(17,382)	—	(17,382)	(17,270)	—	(17,270)
Depreciation and amortization	(92,186)	(5,067)	(97,253)	(91,816)	(5,053)	(96,869)
General and administrative expenses(i)	(24,562)	(2,145)	(26,707)	(18,708)	(1,507)	(20,215)
Write-down of vessels	—	—	—	—	(45,000)	(45,000)
Income (loss) from vessel operations	194,887	(1,896)	192,991	206,727	(45,803)	160,924
Equity income	94,180	11,514	105,694	50,651	6,223	56,874

(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 consolidated total assets presented in the Partnership's consolidated balance sheets is as follows:    

	September 30, 2021	December 31, 2020
	$	$
Total assets of the LNG segment	4,441,653	4,395,336
Total assets of the LPG segment	248,047	246,982
Unallocated:
Cash and cash equivalents	109,596	206,762
Advances to affiliates	14,664	4,924
Consolidated total assets	4,813,960	4,854,004

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Chartered-in Vessels

9 Months Ended

Sep. 30, 2021

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 (see Note 10a).

As at September 30, 2021, minimum commitments to be incurred by the Partnership relating to its time-charter-in contract with the MALT Joint Venture were approximately $6.0 million (remainder of 2021) and $11.1 million (2022). These amounts do not include commitments relating to two vessels owned by Teekay BLT Corporation (or the Tangguh Joint Venture) which are described in Note 12b.

Lessee, Finance Leases [Text Block]

Obligations related to Finance Leases

	September 30, 2021	December 31, 2020
	$	$
Total obligations related to finance leases	1,287,044	1,340,922
Less current portion	(73,437)	(71,932)
Long-term obligations related to finance leases	1,213,607	1,268,990

As at September 30, 2021 and December 31, 2020, 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 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. As at September 30, 2021, the Partnership was in compliance with all covenants in respect of the obligations related to its finance leases.

As at September 30, 2021, 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 $1.6 billion, including imputed interest of $350.2 million, repayable for the remainder of 2021 through 2034, as indicated below:

	Commitments as at September 30, 2021
Year	$
Remainder of 2021	34,420
2022	136,959
2023	135,459
2024	132,011
2025	129,725
Thereafter	1,068,641

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Revenues

9 Months Ended

Sep. 30, 2021

Revenue from Contract with Customer [Abstract]

Revenue

RevenueThe Partnership’s primary source of revenue is from chartering its vessels to its customers. The Partnership primarily utilizes two forms of contracts consisting of time-charter contracts and voyage 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, 2020.

Revenue Table

The following tables contain the Partnership’s revenue for the three and nine months ended September 30, 2021 and 2020, by contract type and by segment.

	Three Months Ended September 30,
	2021			2020
	LNG Segment $	LPG Segment $	Total $	LNG Segment $	LPG Segment $	Total $
Time charters	131,366	3,084	134,450	136,203	—	136,203
Voyage charters	—	9,739	9,739	—	9,982	9,982
Management fees and other income	2,388	—	2,388	2,750	—	2,750
	133,754	12,823	146,577	138,953	9,982	148,935

	Nine Months Ended September 30,
	2021			2020
	LNG Segment $	LPG Segment $	Total $	LNG Segment $	LPG Segment $	Total $
Time charters	404,792	6,890	411,682	402,509	—	402,509
Voyage charters	—	29,324	29,324	—	27,682	27,682
Management fees and other income	7,142	—	7,142	6,836	—	6,836
	411,934	36,214	448,148	409,345	27,682	437,027

The following table contains the Partnership’s revenue for the three and nine months ended September 30, 2021 and 2020, by contracts or components of contracts accounted for as leases and those not accounted for as leases:

	Three Months Ended September 30,		Nine Months Ended September 30,
	2021	2020	2021	2020
	$	$	$	$
Lease revenue
Lease revenue from lease payments of operating leases	124,312	126,678	382,615	373,566
Interest income on lease receivables	12,348	12,659	36,877	37,920
Variable lease payments - cost reimbursements(1)	1,541	1,475	4,686	3,795
	138,201	140,812	424,178	415,281
Non-lease revenue
Non-lease revenue - related to direct financing leases	5,988	5,373	16,828	14,910
Management fees and other income	2,388	2,750	7,142	6,836
	8,376	8,123	23,970	21,746
Total	146,577	148,935	448,148	437,027

(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 charter contracts accounted for as operating leases.

Net Investments in Direct Financing Leases

As at September 30, 2021 and December 31, 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, 2020.

In January 2020, Awilco purchased two LNG carriers classified as sales-type leases, the WilForce and the WilPride, from the Partnership and paid the Partnership the associated purchase obligation amounts, deferred hire amounts and interest on deferred hire amounts, totaling $260.4 million relating to these two vessels.

As at September 30, 2021, estimated lease payments to be received by the Partnership related to its direct financing leases in each of the next five years were approximately $16.1 million (remainder of 2021), $64.2 million (2022), $64.0 million (2023), $64.3 million (2024), $64.2

million (2025) and an aggregate of $446.5 million thereafter. Two leases are expected to end in 2028 and the remaining lease is scheduled to end in 2039.

Operating Leases

As at September 30, 2021, 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 $124.9 million (remainder of 2021), $389.0 million (2022), $309.9 million (2023), $252.9 million (2024), and $197.4 million (2025). 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 September 30, 2021, variable or contingent rentals, or rentals from contracts which were entered into or commenced after September 30, 2021. 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 September 30, 2021, the Partnership had $15.7 million of advanced payments recognized as contract liabilities included in unearned revenue (December 31, 2020 – $26.5 million, September 30, 2020 – $28.9 million and December 31, 2019 – $24.9 million). The Partnership recognized $14.0 million and $26.4 million of revenue for the three months ended September 30, 2021 and 2020, respectively, that was recognized as a contract liability at the beginning of such three-month periods. The Partnership recognized $26.5 million and $24.9 million of revenue for the nine months ended September 30, 2021 and 2020, respectively, that was recognized as a contract liability at the beginning of such nine-month periods.

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Equity-Accounted Joint Ventures

9 Months Ended

Sep. 30, 2021

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, 2020. 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 September 30, 2021, the Partnership had advanced $32.3 million to the Exmar LPG Joint Venture (December 31, 2020 – $42.3 million), in which the Partnership has a 50% ownership interest. These advances bear interest at LIBOR plus 0.50% and have no fixed repayment terms. For the three and nine months ended September 30, 2021, interest earned on these loans amounted to $0.1 million and $0.3 million, respectively (three and nine months ended September 30, 2020 – $0.1 million and $0.7 million, respectively), and is included in interest income in the Partnership's consolidated statements of income. As of September 30, 2021 and December 31, 2020, the interest receivable on these advances was $nil. These advances were included in current portion of advances to equity-accounted joint ventures, net and in investments in and advances to equity-accounted joint ventures, net in the Partnership’s consolidated balance sheets.

b) As of September 30, 2021 and December 31, 2020, the Partnership had advanced $73.4 million to the Bahrain LNG Joint Venture, in which the Partnership has a 30% ownership interest. These advances bear interest at 6.0%. For the three and nine months ended September 30, 2021, interest earned on these advances amounted to $1.2 million and $3.6 million, respectively (three and nine months ended September 30, 2020 – $1.1 million and $3.4 million, respectively), and is included in interest income in the Partnership's consolidated statements of income. As of September 30, 2021 and December 31, 2020, the interest receivable on these advances was $8.7 million and $5.1 million, respectively. Both the advances and the accrued interest on these advances were included in investments in and advances to equity-accounted joint ventures, net in the Partnership’s consolidated balance sheets.

c) As of September 30, 2021, the Partnership had advanced $0.7 million to the Angola Joint Venture (December 31, 2020 – $1.0 million), in which the Partnership has a 33% ownership interest. These advances bear interest at LIBOR plus 1.0%. The advances were included in current portion of advances to equity-accounted joint ventures, net in the Partnership’s consolidated balance sheets.

d) The Partnership guarantees its proportionate share of certain loan facilities and obligations on interest rate swaps for certain of 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 September 30, 2021 was $1.3 billion. As at September 30, 2021, with the exception of debt service coverage ratio breaches for three of the vessels in the Angola Joint Venture, all of the Partnership's equity-accounted joint ventures were in compliance with all covenants relating to these loan facilities that the Partnership guarantees. In October 2021, the Angola Joint Venture obtained a waiver from its lenders for the covenant requirement that was not met, with such waiver being valid until the next covenant test at December 31, 2021.

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Long-Term Debt

9 Months Ended

Sep. 30, 2021

Debt Disclosure [Abstract]

Long-Term Debt

Long-Term Debt

	September 30, 2021	December 31, 2020
	$	$
U.S. Dollar-denominated Revolving Credit Facilities due in 2022	105,000	100,000
U.S. Dollar-denominated Term Loans and Bonds due from 2021 to 2030	812,304	873,712
Norwegian Krone-denominated Bonds due from 2021 to 2025	348,630	355,514
Euro-denominated Term Loans due in 2023 and 2024	128,439	152,710
Total principal	1,394,373	1,481,936
Unamortized discount and debt issuance costs	(8,681)	(9,723)
Total debt	1,385,692	1,472,213
Less current portion	(350,372)	(250,508)
Long-term debt	1,035,320	1,221,705

As at September 30, 2021, the Partnership had two revolving credit facilities available, which, as at such date, provided for borrowings of up to $330.4 million (December 31, 2020 – $354.8 million), of which $225.4 million (December 31, 2020 – $254.8 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 $330.4 million in 2022, which is when both revolving credit facilities mature. The revolving credit facilities may be used by the Partnership for 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 the Partnership's subsidiaries of all outstanding amounts.

As at September 30, 2021, the Partnership had six U.S. Dollar-denominated term loans and bonds outstanding which totaled $812.3 million in aggregate principal amount (December 31, 2020 – $873.7 million). Interest payments on the term loans are based on LIBOR plus a margin, where margins ranged from 1.85% to 3.25% and fixed interest payments on the bonds ranging from 4.11% to 4.41%. The six combined term loans and bonds require quarterly interest and principal payments and five 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 September 30, 2021, 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.

As at September 30, 2021, and December 31, 2020, the Partnership had Norwegian Krone (or NOK) 3.1 billion of senior unsecured bonds in the Norwegian bond market that mature through 2025. As at September 30, 2021, the total amount of the bonds, which are listed on the Oslo Stock Exchange, was $348.6 million (December 31, 2020 – $355.5 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 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 5.74% to 7.89% and the transfer of principal fixed at $360.5 million upon maturity in exchange for NOK 3.1 billion (see Note 11). On October 28, 2021, the Partnership repaid NOK 1.2 billion of senior unsecured bonds that trade in the Norwegian bond market upon maturity, as well as certain related cross currency swaps (see Note 11).

The Partnership had two Euro-denominated term loans outstanding, which as at September 30, 2021, totaled 110.9 million Euros ($128.4 million) (December 31, 2020 – 125.0 million Euros ($152.7 million)). Interest payments for one of the term loans are based on the Euro Interbank Offered Rate (or EURIBOR) plus a margin. Interest payments on the remaining term loan are based on EURIBOR where EURIBOR is limited to zero or above zero values, plus a margin. Margins on the term loans ranged from 0.60% to 1.95%. The term 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.

The weighted-average interest rates for the Partnership’s long-term debt outstanding as at September 30, 2021 and December 31, 2020 were 3.25% and 3.04%, 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 gains (losses) of $2.8 million and $(7.9) million for the three months ended September 30, 2021 and 2020, respectively, and $6.9 million and $(14.7) million for the nine months ended September 30, 2021 and 2020, respectively.

The aggregate annual long-term debt principal repayments required under the Partnership's revolving credit facilities, loans and bonds subsequent to September 30, 2021 are $169.1 million (remainder of 2021), $212.3 million (2022), $233.3 million (2023), $124.4 million (2024), $185.5 million (2025) and $469.8 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 September 30, 2021, the Partnership had five credit facilities with an aggregate outstanding loan balance of $510.8 million that require it to maintain minimum vessel-value-to-outstanding-loan-principal-balance ratios of 110%, 115%, 120%, 120% and 135%, which as at September 30, 2021, were 142%, 686%, 149%, 163% and 227%, 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 and, in addition, one of the term loans in the RasGas II Joint Venture requires it to satisfy a minimum vessel value to outstanding loan principal balance ratio to pay dividends. As at September 30, 2021, the Partnership was in compliance with all covenants relating to the Partnership’s credit facilities and other long-term debt.

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Income Tax

9 Months Ended

Sep. 30, 2021

Income Tax Disclosure [Abstract]

Income Tax

Income Tax Expense

The components of the provision for income tax expense are as follows:

	Three Months Ended September 30,		Nine Months Ended September 30,
	2021	2020	2021	2020
	$	$	$	$
Current	(1,285)	(1,927)	(3,935)	(3,308)
Deferred	(941)	507	671	1,180
Income tax expense	(2,226)	(1,420)	(3,264)	(2,128)

Included in the Partnership's current income tax 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.

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Related Party Transactions

9 Months Ended

Sep. 30, 2021

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 September 30,		Nine Months Ended September 30,
	2021	2020	2021	2020
	$	$	$	$
Voyage revenues (i)	9,869	9,704	29,285	27,881
Vessel operating expenses (ii)	(451)	(1,877)	(5,609)	(4,610)
Time-charter hire expenses (iii)	(5,665)	(5,980)	(17,382)	(17,270)
General and administrative expenses (iv)	(9,382)	(3,998)	(18,374)	(11,583)
Equity income (v)	609	609	1,808	1,815

(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 the Bahrain Spirit to the Bahrain LNG Joint Venture for the three and nine months ended September 30, 2021 amounted to $7.5 million and $22.1 million, respectively ($7.3 million and $21.4 million for the three and nine months ended September 30, 2020, respectively). In addition, the Partnership has an operation and maintenance contract with the Bahrain LNG Joint Venture relating to the LNG regasification terminal in Bahrain. Fees received in relation to the operation and maintenance contract from the Bahrain LNG Joint Venture for the three and nine months ended September 30, 2021 were $2.4 million and $7.2 million, respectively ($2.4 million and $6.5 million for the three and nine months ended September 30, 2020, 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. 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 nine months ended September 30, 2021 were $5.7 million and $17.4 million, respectively ($6.0 million and $17.3 million for the three and nine months ended September 30, 2020, respectively).

(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 nine months ended September 30, 2021, the Partnership charged fees of $0.6 million and $1.8 million, respectively ($0.6 million and $1.8 million for the three and nine months ended September 30, 2020, 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 September 30, 2021 and December 31, 2020, non-interest-bearing advances to affiliates totaled $14.7 million and $4.9 million, respectively, and non-interest-bearing advances from affiliates totaled $13.8 million and $11.0 million, respectively. These advances are unsecured and have no fixed repayment terms. Affiliates are entities that are under common control with the Partnership.

c)    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 newly-issued common units of the Partnership. This was treated as a non-cash transaction in the Partnership's consolidated statements of cash flows.

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)    For other transactions with the Partnership's equity-accounted joint ventures not disclosed above, please refer to Note 7.

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Derivative Instruments and Hedging Activities

9 Months Ended

Sep. 30, 2021

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 September 30, 2021, 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, 2023 and 2025, and to economically hedge the interest rate exposure. The following table reflects information relating to the cross currency swaps as at September 30, 2021.

		Floating Rate Receivable
Principal Amount NOK	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%	(9,932)	0.1
850,000	102,000	NIBOR	4.60%	7.89%	(10,601)	1.9
1,000,000	112,000	NIBOR	5.15%	5.74%	3,891	3.9
					(16,642)

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 September 30, 2021, 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 Interest Rate (i)
LIBOR-Based Debt:
U.S. Dollar-denominated interest rate swaps (ii)	LIBOR	181,906	816	4.4	0.7%
U.S. Dollar-denominated interest rate swaps (ii)(iii)	LIBOR	139,169	(1,963)	3.0	1.4%
U.S. Dollar-denominated interest rate swaps (ii)	LIBOR	283,729	(20,757)	2.3	3.6%
U.S. Dollar-denominated interest rate swaps (ii)	LIBOR	150,761	(7,773)	5.2	2.3%
EURIBOR-Based Debt:
Euro-denominated interest rate swaps (iv)	EURIBOR	58,613	(3,901)	1.9	3.9%
			(33,578)

(i)Excludes the margins the Partnership pays on its floating-rate term loans, which, at September 30, 2021, ranged from 0.60% to 3.25%.

(ii)Principal amount reduces quarterly.

(iii)These interest rate swaps are subject to mandatory early termination in 2024 whereby the swaps will be settled based on their fair value at that time.

(iv)Principal amount reduces monthly.

As at September 30, 2021, 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 September 30, 2021, these interest rate swaps and cross currency swaps had an aggregate fair value asset of $4.7 million (December 31, 2020 – $4.5 million) and an aggregate fair value liability of $54.9 million (December 31, 2020 – $73.7 million). As at September 30, 2021, the Partnership had $nil (December 31, 2020 – $3.8 million) on deposit as security for swap liabilities under certain master agreements. The deposit is presented in restricted cash – current and restricted cash – 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.

	Current portion of derivative assets $	Derivative assets $	Accrued liabilities $	Current portion of derivative liabilities $	Derivative liabilities $
As at September 30, 2021
Derivatives designated as a cash flow hedge:
Interest rate swap agreements	—	—	(62)	(3,036)	(4,673)
Derivatives not designated as a cash flow hedge:
Interest rate swap agreements	—	1,823	(2,203)	(12,079)	(13,348)
Cross currency swap agreements	465	3,430	(740)	(11,908)	(7,889)
	465	5,253	(3,005)	(27,023)	(25,910)
As at December 31, 2020
Derivatives designated as a cash flow hedge:
Interest rate swap agreements	—	—	(70)	(3,162)	(9,631)
Derivatives not designated as a cash flow hedge:
Interest rate swap agreements	—	—	(4,823)	(42,329)	(15,453)
Cross currency swap agreements	—	4,505	(701)	(11,434)	(7,887)
	—	4,505	(5,594)	(56,925)	(32,971)

Realized and unrealized gains (losses) relating to non-designated interest rate swap agreements and foreign currency forward contracts are recognized in earnings and reported in realized and unrealized gain (loss) on non-designated derivative instruments 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 September 30,
	2021			2020
	Realized gains (losses)	Unrealized gains (losses)	Total	Realized gains (losses)	Unrealized gains (losses)	Total
	$	$	$	$	$	$
Interest rate swap agreements	(3,919)	4,020	101	(4,947)	3,620	(1,327)

	Nine Months Ended September 30,
	2021			2020
	Realized gains (losses)	Unrealized gains (losses)	Total	Realized gains (losses)	Unrealized gains (losses)	Total
	$	$	$	$	$	$
Interest rate swap agreements	(12,317)	34,178	21,861	(11,520)	(18,755)	(30,275)
Interest rate swap agreement   termination	(18,012)	—	(18,012)	—	—	—
Foreign currency forward contracts	—	—	—	(241)	202	(39)
	(30,329)	34,178	3,849	(11,761)	(18,553)	(30,314)

Realized and unrealized gains (losses) relating to cross currency swap agreements are recognized in earnings and reported in foreign currency exchange gain (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 September 30,
	2021			2020
	Realized gains (losses)	Unrealized gains (losses)	Total	Realized gains (losses)	Unrealized gains (losses)	Total
	$	$	$	$	$	$
Cross currency swap agreements	(1,595)	(3,952)	(5,547)	(1,669)	1,490	(179)

	Nine Months Ended September 30,
	2021			2020
	Realized gains (losses)	Unrealized gains (losses)	Total	Realized gains (losses)	Unrealized gains (losses)	Total
	$	$	$	$	$	$
Cross currency swap agreements	(4,233)	(1,085)	(5,318)	(4,916)	(2,169)	(7,085)
Cross currency swap agreements   maturity	—	—	—	(33,844)	—	(33,844)
	(4,233)	(1,085)	(5,318)	(38,760)	(2,169)	(40,929)

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 income (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 September 30, 2021		Three Months Ended September 30, 2020
Amount of Gain Recognized in OCI $	Amount of Loss Reclassified from Accumulated OCI to Interest Expense $	Amount of Gain Recognized in OCI $	Amount of Loss Reclassified from Accumulated OCI to Interest Expense $
1,040	(840)	616	(835)

Nine Months Ended September 30, 2021		Nine Months Ended September 30, 2020
Amount of Gain Recognized in OCI $	Amount of Loss Reclassified from Accumulated OCI to Interest Expense $	Amount of Loss Recognized in OCI $	Amount of Loss Reclassified from Accumulated OCI to Interest Expense $
5,080	(2,480)	(9,610)	(1,469)

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Commitments and Contingencies

9 Months Ended

Sep. 30, 2021

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 September 30, 2021 is as follows:

	Total $	Remainder of 2021 $	2022 $
Certain consolidated LNG carriers (i)	20,557	5,843	14,714
Bahrain LNG Joint Venture (ii)	11,339	—	11,339
	31,896	5,843	26,053

(i)In June 2019, the Partnership entered into an agreement with a contractor to supply reliquefaction equipment on certain of the Partnership's LNG carriers in 2021 and 2022, for an estimated installed cost of $53.5 million. As at September 30, 2021, the estimated remaining cost of these installations was $20.6 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 September 30, 2021, the Partnership's proportionate share of the estimated remaining cost of $11.3 million relates to the final construction installment on the LNG terminal. The Bahrain LNG Joint Venture has remaining undrawn debt financing of $23.5 million, of which $7.1 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 14d to the Partnership’s audited consolidated financial statements filed with its Annual Report on Form 20-F for the year ended December 31, 2020. 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 September 30, 2021, the carrying amount of this estimated tax indemnification obligation relating to the leasing arrangement through the Tangguh Joint Venture was $5.3 million (December 31, 2020 – $5.7 million) and was 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 $378.5 million as at September 30, 2021. This working capital deficit includes $350.4 million related to scheduled maturities and repayments of long-term debt in the 12 months following September 30, 2021. 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 cash distributions it expects to receive from its equity-accounted joint ventures, and two expected debt refinancings which the Partnership considers probable based on its history of refinancing similar debt, 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.

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Total Capital and Net Income Per Unit

9 Months Ended

Sep. 30, 2021

Equity [Abstract]

Total Capital and Net (Loss) Income Per Unit

and Net Income Per Common Unit

As at September 30, 2021, approximately 58.7% 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 the issuance to a Teekay Corporation subsidiary of 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 attributable to the limited partners and General Partner is based on the limited partners' and General Partner’s respective ownership percentages.

Net Income Per Common Unit

Limited partners' interest in net income per common unit is determined by dividing net income, 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 distributions payable on the Series A and Series B Preferred Units for the three and nine months ended September 30, 2021 and 2020 were $6.4 million and $19.3 million, respectively.

	Three Months Ended September 30,		Nine Months Ended September 30,
	2021	2020	2021	2020
	$	$	$	$
Limited partners' interest in net income for basic and diluted net income per common unit	59,487	33,255	185,267	32,421
Weighted average number of common units (i)	87,120,897	86,951,234	87,081,753	82,010,753
Dilutive effect of unit-based compensation	112,094	89,812	136,657	99,073
Weighted average number of common units and common unit equivalents	87,232,991	87,041,046	87,218,410	82,109,826
Limited partners' interest in net income per common unit:
Basic	0.68	0.38	2.13	0.40
Diluted	0.68	0.38	2.12	0.39

(i) Includes common units related to non-forfeitable unit-based compensation.

Common Unit RepurchasesIn December 2018, the Partnership announced that the General Partner's Board of Directors authorized a common unit repurchase program for the repurchase of up to $100 million of the Partnership's common units. During the nine months ended September 30, 2020, the Partnership repurchased 1.4 million common units for $15.3 million, and associated general partnership interest of $0.3 million. 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 September 30, 2021, the remaining dollar value of units that may be purchased under the program is approximately $55.8 million.

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Write-down of Vessels	9 Months Ended
	Sep. 30, 2021
Property, Plant and Equipment [Abstract]
Write-down and Sale of Vessels	Write-down of VesselsIn 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 at that time, using appraised values, primarily due to the lower near-term outlook for these types of vessels partly as a result of the economic environment at that time (including the economic impact of the COVID-19 global pandemic), as well as the Partnership receiving notification that the Partnership's then-existing commercial management agreement with a third-party commercial manager would be terminated and replaced by a new commercial management agreement in September 2020. The total impairment charge of $45.0 million was included in write-down of vessels for the nine months ended September 30, 2020 in the Partnership's consolidated statements of income.

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Subsequent Events	9 Months Ended
	Sep. 30, 2021
Subsequent Events [Abstract]
Subsequent Events	16. Subsequent EventsOn October 4, 2021, the Partnership, Teekay GP L.L.C. (or Teekay GP), an investment vehicle (or Acquiror) managed by Stonepeak Partners L.P., and a wholly-owned subsidiary of Acquiror (or Merger Sub) entered into an agreement and plan of merger (or the Merger Agreement). At the effective time of the merger (or the Merger) under the Merger Agreement, (a) each issued and outstanding common unit of the Partnership, including approximately 36.0 million common units owned by Teekay Corporation (or Teekay) (but excluding any common units owned by the Partnership, the Partnership's wholly-owned subsidiaries, Acquiror or their respective wholly-owned subsidiaries), will be converted into the right to receive cash in an amount of $17.00 per common unit and (b) Merger Sub will be merged with and into the Partnership, whereupon the Partnership will continue as the surviving entity. In addition, Teekay concurrently entered into an agreement with Acquiror whereby Teekay agreed to sell its limited liability company interest in Teekay GP for $26.4 million, which consists of $17.00 for each of the approximately 1.6 million common unit equivalents represented by the economic interest of Teekay GP's general partner interest in the Partnership. The Partnership, Teekay, and Acquiror also concurrently entered into an agreement whereby the Partnership will acquire certain restructured subsidiaries of Teekay that provide, through existing services agreements, comprehensive managerial, operational and administrative services to the Partnership and the Partnership’s subsidiaries and joint ventures for a purchase price of $3.34 million, subject to certain adjustments at closing. The Merger and related transactions have been unanimously approved by the respective Boards of Directors of Teekay GP and Teekay, as applicable, including the unanimous approval of the Conflicts Committee of Teekay GP. The Merger is expected to close on or soon after December 31, 2021, with the Merger Agreement providing that the Merger will not close prior to December 31, 2021. The Merger remains subject to approval by the holders of a majority of the Partnership's outstanding common units and the satisfaction or waiver of certain other customary closing conditions. There is no assurance that the conditions to closing will be satisfied or waived, or that the Merger and related transactions will be completed. Teekay, which currently owns approximately 41% of the Partnership's outstanding common units, has entered into a voting and support agreement by which it has agreed, among other things and subject to certain conditions, to vote in favor of the Merger. Following the Merger, the common units of the Partnership will be delisted from the New York Stock Exchange. The Series A and B preferred units of the Partnership will remain outstanding and continue to trade on the New York Stock Exchange following the Merger.

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Accounting Pronouncements (Policies)

9 Months Ended

Sep. 30, 2021

Accounting Changes and Error Corrections [Abstract]

New accounting pronouncements

Accounting Pronouncements

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 Partnership adopted this update on January 1, 2021. The adoption did not have an impact on the Partnership's consolidated financial statements and related disclosures.

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. 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.

In July 2021, the FASB issued ASU 2021-05 - Leases (Topic 842) Lessors — Certain Leases with Variable Lease Payments (or ASU 2021-05). Pursuant to ASU 2021-05, lessors should classify and account for a lease with variable lease payments that do not depend on a reference index or a rate as an operating lease if, without reference to ASU 2012-05, the lease would have been classified as a sales-type lease or a direct financing lease and a day-one loss would have been recognized. The Partnership expects to adopt ASU 2021-05 on January 1, 2022, although earlier application is permitted. This ASU can be adopted either (1) retrospectively to leases that commenced or were modified on or after January 1, 2019 or (2) prospectively to leases that commence or are modified on or after the date that an entity first applies the amendments. The Partnership is currently evaluating the effect of adopting this new guidance.

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Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2021

Fair Value Disclosures [Abstract]

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 as at September 30, 2021 and December 31, 2020.

	Amortized Cost Basis by Origination Year
	Credit Quality Grade (1)	2020	2018	2016 and prior	Total
As at September 30, 2021		$	$	$	$
Direct financing leases
Tangguh Hiri and Tangguh Sago	Performing	—	—	322,949	322,949
Bahrain Spirit	Performing	—	210,190	—	210,190
		—	210,190	322,949	533,139
Loans to equity-accounted joint ventures
Exmar LPG Joint Venture	Performing	—	—	32,266	32,266
Bahrain LNG Joint Venture	Performing	—	—	73,375	73,375
Other	Performing	660	—	—	660
		660	—	105,641	106,301
		660	210,190	428,590	639,440
As at December 31, 2020
Direct financing leases
Tangguh Hiri and Tangguh Sago	Performing	—	—	332,308	332,308
Bahrain Spirit	Performing	—	211,939	—	211,939
		—	211,939	332,308	544,247
Loans to equity-accounted joint ventures
Exmar LPG Joint Venture	Performing	—	—	42,266	42,266
Bahrain LNG Joint Venture	Performing	—	—	73,375	73,375
Other	Performing	991	—	—	991
		991	—	115,641	116,632
		991	211,939	447,949	660,879

Financing Receivable, Allowance for Credit Loss

Changes in the Partnership's allowance for credit losses for the three and nine months ended September 30, 2021 and 2020 are as follows:

	Direct Financing Leases (1) (2) $	Direct Financing and Sales-Type Leases and Other within Equity-Accounted Joint Ventures (1) (2) $	Loans to Equity-Accounted Joint Ventures (1) $	Guarantees of Debt (1) $	Total $
Three and Nine Months Ended September 30, 2021
As at December 31, 2020	30,177	54,937	4,726	2,080	91,920
Provision for (reversal of) potential credit losses	4,436	6,677	(981)	218	10,350
As at March 31, 2021	34,613	61,614	3,745	2,298	102,270
Provision for (reversal of) potential credit losses	787	722	255	(298)	1,466
As at June 30, 2021	35,400	62,336	4,000	2,000	103,736
(Reversal of) provision for potential credit losses	(1,400)	(1,736)	300	(200)	(3,036)
As at September 30, 2021	34,000	60,600	4,300	1,800	100,700
Three and Nine Months Ended September 30, 2020
As at January 1, 2020	11,155	36,292	3,714	2,139	53,300
(Reversal of) provision for potential credit losses	(100)	8,980	—	—	8,880
As at March 31, 2020	11,055	45,272	3,714	2,139	62,180
Provision for (reversal of) potential credit losses	465	(423)	83	(288)	(163)
As at June 30, 2020	11,520	44,849	3,797	1,851	62,017
Provision for (reversal of) potential credit losses	13,805	7,099	877	(285)	21,496
As at September 30, 2020	25,325	51,948	4,674	1,566	83,513

Fair Value Measurements, Recurring and Nonrecurring

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.

		September 30, 2021		December 31, 2020
	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 15)	Level 1	155,627	155,627	257,943	257,943
Derivative instruments (note 11)
Interest rate swap agreements – assets	Level 2	1,823	1,823	—	—
Interest rate swap agreements – liabilities	Level 2	(35,401)	(35,401)	(75,468)	(75,468)
Cross currency swap agreements – assets	Level 2	3,895	3,895	4,505	4,505
Cross currency swap agreements – liabilities	Level 2	(20,537)	(20,537)	(20,022)	(20,022)
Non-recurring:
Vessels and equipment	Level 2	—	—	40,717	40,717
Other:
Loans to equity-accounted joint ventures (note 7)	(i)	106,301	(i)	116,632	(i)
Long-term debt – public (note 8)	Level 1	(346,246)	(354,519)	(352,260)	(359,581)
Long-term debt – non-public (note 8)	Level 2	(1,039,446)	(1,061,418)	(1,119,953)	(1,137,050)
Obligations related to finance leases (note 5a)	Level 2	(1,287,044)	(1,363,615)	(1,340,922)	(1,456,927)

(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.

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Segment Reporting (Tables)

9 Months Ended

Sep. 30, 2021

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 September 30,
	2021			2020
	LNG Segment $	LPG Segment $	Total $	LNG Segment $	LPG Segment $	Total $
Voyage revenues	133,754	12,823	146,577	138,953	9,982	148,935
Voyage expenses	(1,778)	(5,443)	(7,221)	(427)	(3,523)	(3,950)
Vessel operating expenses	(25,326)	(5,100)	(30,426)	(25,871)	(4,771)	(30,642)
Time-charter hire expenses	(5,665)	—	(5,665)	(5,980)	—	(5,980)
Depreciation and amortization	(31,294)	(1,708)	(33,002)	(30,658)	(1,943)	(32,601)
General and administrative expenses(i)	(11,691)	(928)	(12,619)	(5,704)	(461)	(6,165)
Income (loss) from vessel operations	58,000	(356)	57,644	70,313	(716)	69,597
Equity income	35,241	3,997	39,238	22,674	1,672	24,346

	Nine Months Ended September 30,
	2021			2020
	LNG Segment $	LPG Segment $	Total $	LNG Segment $	LPG Segment $	Total $
Voyage revenues	411,934	36,214	448,148	409,345	27,682	437,027
Voyage expenses	(4,748)	(16,016)	(20,764)	(2,262)	(9,334)	(11,596)
Vessel operating expenses	(78,169)	(14,882)	(93,051)	(72,562)	(12,591)	(85,153)
Time-charter hire expenses	(17,382)	—	(17,382)	(17,270)	—	(17,270)
Depreciation and amortization	(92,186)	(5,067)	(97,253)	(91,816)	(5,053)	(96,869)
General and administrative expenses(i)	(24,562)	(2,145)	(26,707)	(18,708)	(1,507)	(20,215)
Write-down of vessels	—	—	—	—	(45,000)	(45,000)
Income (loss) from vessel operations	194,887	(1,896)	192,991	206,727	(45,803)	160,924
Equity income	94,180	11,514	105,694	50,651	6,223	56,874

(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

	September 30, 2021	December 31, 2020
	$	$
Total assets of the LNG segment	4,441,653	4,395,336
Total assets of the LPG segment	248,047	246,982
Unallocated:
Cash and cash equivalents	109,596	206,762
Advances to affiliates	14,664	4,924
Consolidated total assets	4,813,960	4,854,004

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Chartered-in Vessels (Tables)

9 Months Ended

Sep. 30, 2021

Leases [Abstract]

Obligations related to Finance Leases

Obligations related to Finance Leases

	September 30, 2021	December 31, 2020
	$	$
Total obligations related to finance leases	1,287,044	1,340,922
Less current portion	(73,437)	(71,932)
Long-term obligations related to finance leases	1,213,607	1,268,990

Commitments related to Finance Leases

s at September 30, 2021, 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 $1.6 billion, including imputed interest of $350.2 million, repayable for the remainder of 2021 through 2034, as indicated below:

	Commitments as at September 30, 2021
Year	$
Remainder of 2021	34,420
2022	136,959
2023	135,459
2024	132,011
2025	129,725
Thereafter	1,068,641

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Revenue (Tables)

9 Months Ended

Sep. 30, 2021

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following tables contain the Partnership’s revenue for the three and nine months ended September 30, 2021 and 2020, by contract type and by segment.

	Three Months Ended September 30,
	2021			2020
	LNG Segment $	LPG Segment $	Total $	LNG Segment $	LPG Segment $	Total $
Time charters	131,366	3,084	134,450	136,203	—	136,203
Voyage charters	—	9,739	9,739	—	9,982	9,982
Management fees and other income	2,388	—	2,388	2,750	—	2,750
	133,754	12,823	146,577	138,953	9,982	148,935

	Nine Months Ended September 30,
	2021			2020
	LNG Segment $	LPG Segment $	Total $	LNG Segment $	LPG Segment $	Total $
Time charters	404,792	6,890	411,682	402,509	—	402,509
Voyage charters	—	29,324	29,324	—	27,682	27,682
Management fees and other income	7,142	—	7,142	6,836	—	6,836
	411,934	36,214	448,148	409,345	27,682	437,027

The following table contains the Partnership’s revenue for the three and nine months ended September 30, 2021 and 2020, by contracts or components of contracts accounted for as leases and those not accounted for as leases:

	Three Months Ended September 30,		Nine Months Ended September 30,
	2021	2020	2021	2020
	$	$	$	$
Lease revenue
Lease revenue from lease payments of operating leases	124,312	126,678	382,615	373,566
Interest income on lease receivables	12,348	12,659	36,877	37,920
Variable lease payments - cost reimbursements(1)	1,541	1,475	4,686	3,795
	138,201	140,812	424,178	415,281
Non-lease revenue
Non-lease revenue - related to direct financing leases	5,988	5,373	16,828	14,910
Management fees and other income	2,388	2,750	7,142	6,836
	8,376	8,123	23,970	21,746
Total	146,577	148,935	448,148	437,027

(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 charter contracts accounted for as operating leases.

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Long-Term Debt (Tables)

9 Months Ended

Sep. 30, 2021

Debt Disclosure [Abstract]

Components of Long-Term Debt

	September 30, 2021	December 31, 2020
	$	$
U.S. Dollar-denominated Revolving Credit Facilities due in 2022	105,000	100,000
U.S. Dollar-denominated Term Loans and Bonds due from 2021 to 2030	812,304	873,712
Norwegian Krone-denominated Bonds due from 2021 to 2025	348,630	355,514
Euro-denominated Term Loans due in 2023 and 2024	128,439	152,710
Total principal	1,394,373	1,481,936
Unamortized discount and debt issuance costs	(8,681)	(9,723)
Total debt	1,385,692	1,472,213
Less current portion	(350,372)	(250,508)
Long-term debt	1,035,320	1,221,705

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Income Tax (Tables)

9 Months Ended

Sep. 30, 2021

Income Tax Disclosure [Abstract]

Components of Provision for Income Taxes

The components of the provision for income tax expense are as follows:

	Three Months Ended September 30,		Nine Months Ended September 30,
	2021	2020	2021	2020
	$	$	$	$
Current	(1,285)	(1,927)	(3,935)	(3,308)
Deferred	(941)	507	671	1,180
Income tax expense	(2,226)	(1,420)	(3,264)	(2,128)

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Related Party Transactions (Tables)

9 Months Ended

Sep. 30, 2021

Related Party Transactions [Abstract]

Schedule of Related Party Transactions

The following table and related footnotes provide information about certain of the Partnership's related party transactions for the periods indicated:

	Three Months Ended September 30,		Nine Months Ended September 30,
	2021	2020	2021	2020
	$	$	$	$
Voyage revenues (i)	9,869	9,704	29,285	27,881
Vessel operating expenses (ii)	(451)	(1,877)	(5,609)	(4,610)
Time-charter hire expenses (iii)	(5,665)	(5,980)	(17,382)	(17,270)
General and administrative expenses (iv)	(9,382)	(3,998)	(18,374)	(11,583)
Equity income (v)	609	609	1,808	1,815

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Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities (Tables)

9 Months Ended

Sep. 30, 2021

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 September 30, 2021, 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, 2023 and 2025, and to economically hedge the interest rate exposure. The following table reflects information relating to the cross currency swaps as at September 30, 2021.

		Floating Rate Receivable
Principal Amount NOK	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%	(9,932)	0.1
850,000	102,000	NIBOR	4.60%	7.89%	(10,601)	1.9
1,000,000	112,000	NIBOR	5.15%	5.74%	3,891	3.9
					(16,642)

Interest Rate Swap Agreements

As at September 30, 2021, 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 Interest Rate (i)
LIBOR-Based Debt:
U.S. Dollar-denominated interest rate swaps (ii)	LIBOR	181,906	816	4.4	0.7%
U.S. Dollar-denominated interest rate swaps (ii)(iii)	LIBOR	139,169	(1,963)	3.0	1.4%
U.S. Dollar-denominated interest rate swaps (ii)	LIBOR	283,729	(20,757)	2.3	3.6%
U.S. Dollar-denominated interest rate swaps (ii)	LIBOR	150,761	(7,773)	5.2	2.3%
EURIBOR-Based Debt:
Euro-denominated interest rate swaps (iv)	EURIBOR	58,613	(3,901)	1.9	3.9%
			(33,578)

(i)Excludes the margins the Partnership pays on its floating-rate term loans, which, at September 30, 2021, ranged from 0.60% to 3.25%.

(ii)Principal amount reduces quarterly.

(iii)These interest rate swaps are subject to mandatory early termination in 2024 whereby the swaps will be settled based on their fair value at that time.

(iv)Principal amount reduces monthly.

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.

	Current portion of derivative assets $	Derivative assets $	Accrued liabilities $	Current portion of derivative liabilities $	Derivative liabilities $
As at September 30, 2021
Derivatives designated as a cash flow hedge:
Interest rate swap agreements	—	—	(62)	(3,036)	(4,673)
Derivatives not designated as a cash flow hedge:
Interest rate swap agreements	—	1,823	(2,203)	(12,079)	(13,348)
Cross currency swap agreements	465	3,430	(740)	(11,908)	(7,889)
	465	5,253	(3,005)	(27,023)	(25,910)
As at December 31, 2020
Derivatives designated as a cash flow hedge:
Interest rate swap agreements	—	—	(70)	(3,162)	(9,631)
Derivatives not designated as a cash flow hedge:
Interest rate swap agreements	—	—	(4,823)	(42,329)	(15,453)
Cross currency swap agreements	—	4,505	(701)	(11,434)	(7,887)
	—	4,505	(5,594)	(56,925)	(32,971)

Gain (Loss) for Derivative Instruments Not Designated or Qualifying as Hedging Instruments

	Three Months Ended September 30,
	2021			2020
	Realized gains (losses)	Unrealized gains (losses)	Total	Realized gains (losses)	Unrealized gains (losses)	Total
	$	$	$	$	$	$
Interest rate swap agreements	(3,919)	4,020	101	(4,947)	3,620	(1,327)

	Nine Months Ended September 30,
	2021			2020
	Realized gains (losses)	Unrealized gains (losses)	Total	Realized gains (losses)	Unrealized gains (losses)	Total
	$	$	$	$	$	$
Interest rate swap agreements	(12,317)	34,178	21,861	(11,520)	(18,755)	(30,275)
Interest rate swap agreement   termination	(18,012)	—	(18,012)	—	—	—
Foreign currency forward contracts	—	—	—	(241)	202	(39)
	(30,329)	34,178	3,849	(11,761)	(18,553)	(30,314)

The effect of the gain (loss) on these derivatives on the Partnership's consolidated statements of income is as follows:

	Three Months Ended September 30,
	2021			2020
	Realized gains (losses)	Unrealized gains (losses)	Total	Realized gains (losses)	Unrealized gains (losses)	Total
	$	$	$	$	$	$
Cross currency swap agreements	(1,595)	(3,952)	(5,547)	(1,669)	1,490	(179)

	Nine Months Ended September 30,
	2021			2020
	Realized gains (losses)	Unrealized gains (losses)	Total	Realized gains (losses)	Unrealized gains (losses)	Total
	$	$	$	$	$	$
Cross currency swap agreements	(4,233)	(1,085)	(5,318)	(4,916)	(2,169)	(7,085)
Cross currency swap agreements   maturity	—	—	—	(33,844)	—	(33,844)
	(4,233)	(1,085)	(5,318)	(38,760)	(2,169)	(40,929)

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 September 30, 2021		Three Months Ended September 30, 2020
Amount of Gain Recognized in OCI $	Amount of Loss Reclassified from Accumulated OCI to Interest Expense $	Amount of Gain Recognized in OCI $	Amount of Loss Reclassified from Accumulated OCI to Interest Expense $
1,040	(840)	616	(835)

Nine Months Ended September 30, 2021		Nine Months Ended September 30, 2020
Amount of Gain Recognized in OCI $	Amount of Loss Reclassified from Accumulated OCI to Interest Expense $	Amount of Loss Recognized in OCI $	Amount of Loss Reclassified from Accumulated OCI to Interest Expense $
5,080	(2,480)	(9,610)	(1,469)

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Commitments and Contingencies Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2021

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 September 30, 2021 is as follows:

	Total $	Remainder of 2021 $	2022 $
Certain consolidated LNG carriers (i)	20,557	5,843	14,714
Bahrain LNG Joint Venture (ii)	11,339	—	11,339
	31,896	5,843	26,053

(i)In June 2019, the Partnership entered into an agreement with a contractor to supply reliquefaction equipment on certain of the Partnership's LNG carriers in 2021 and 2022, for an estimated installed cost of $53.5 million. As at September 30, 2021, the estimated remaining cost of these installations was $20.6 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 September 30, 2021, the Partnership's proportionate share of the estimated remaining cost of $11.3 million relates to the final construction installment on the LNG terminal. The Bahrain LNG Joint Venture has remaining undrawn debt financing of $23.5 million, of which $7.1 million relates to the Partnership's proportionate share of the construction commitments included in the table above.

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Total Capital and Net Income Per Unit Total Capital and Net Income Per Unit (Tables)

9 Months Ended

Sep. 30, 2021

Equity [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

	Three Months Ended September 30,		Nine Months Ended September 30,
	2021	2020	2021	2020
	$	$	$	$
Limited partners' interest in net income for basic and diluted net income per common unit	59,487	33,255	185,267	32,421
Weighted average number of common units (i)	87,120,897	86,951,234	87,081,753	82,010,753
Dilutive effect of unit-based compensation	112,094	89,812	136,657	99,073
Weighted average number of common units and common unit equivalents	87,232,991	87,041,046	87,218,410	82,109,826
Limited partners' interest in net income per common unit:
Basic	0.68	0.38	2.13	0.40
Diluted	0.68	0.38	2.12	0.39

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Basis of Presentation Narrative (Details) - vessel	Sep. 30, 2020	Mar. 31, 2020
LPG Carriers [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Number Of Vessels	6	6

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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	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents and restricted cash (note 15)	$ 155,627	$ 257,943	$ 254,837	$ 253,291
Long-term debt	(1,385,692)	(1,472,213)
Obligations related to finance leases (note 5a)	1,287,044	1,340,922
Property, Plant and Equipment, Net, Excluding Capital Leased Assets	1,194,238	1,220,355
Carrying Amount Asset (Liability)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans to equity-accounted joint ventures (note 7)	106,301	116,632
Carrying Amount Asset (Liability) | Level 1 | Public
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	(346,246)	(352,260)
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 15)	155,627	257,943
Carrying Amount Asset (Liability) | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Obligations related to finance leases (note 5a)	1,287,044	1,340,922
Carrying Amount Asset (Liability) | Level 2 | Non-public
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	(1,039,446)	(1,119,953)
Carrying Amount Asset (Liability) | Level 2 | Recurring | LPG Carriers [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Property, Plant and Equipment, Net, Excluding Capital Leased Assets	0	40,717
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	1,823	0
Interest rate swap agreements – liabilities	(35,401)	(75,468)
Carrying Amount Asset (Liability) | Level 2 | Recurring | Cross-currency swap agreements
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	3,895	4,505
Cross currency swap agreements – liabilities	(20,537)	(20,022)
Fair Value Asset (Liability) | Level 1 | Public
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	(354,519)	(359,581)
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 15)	155,627	257,943
Fair Value Asset (Liability) | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Obligations related to finance leases (note 5a)	1,363,615	1,456,927
Fair Value Asset (Liability) | Level 2 | Non-public
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	(1,061,418)	(1,137,050)
Fair Value Asset (Liability) | Level 2 | Recurring | LPG Carriers [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Property, Plant and Equipment, Net, Excluding Capital Leased Assets	0	40,717
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	1,823	0
Interest rate swap agreements – liabilities	(35,401)	(75,468)
Fair Value Asset (Liability) | Level 2 | Recurring | Cross-currency swap agreements
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	3,895	4,505
Cross currency swap agreements – liabilities	$ (20,537)	$ (20,022)

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Financial Instruments - Summary of Partnership's Financing receivables and Direct financing leases (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Recorded Investment [Line Items]
Total Lease and Financing Lease Receivable Originated three years prior to the latest fiscal year	$ 210,190
Total Lease and Financing Lease Receivable Originated one year prior to the latest fiscal year	660
Total Lease and Financing Lease Receivable	639,440	$ 660,879
Total Lease and Financing Lease Receivable Originated five or more years prior to the latest fiscal year	428,590
Total Lease and Financing Lease Receivable Originated four years prior to the latest fiscal year		447,949
Total Lease and Financing Lease Receivable Originated two years prior to the latest fiscal year		211,939
Total Lease and Financing Lease Receivable Current year		991
Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Net Investment in Lease, Originated Four Years before Latest Fiscal Year		332,308
Net Investment in Lease, Originated Five or More Years before Latest Fiscal Year	322,949
Net Investment in Lease	533,139	544,247
Direct Financing Lease, Net Investment in Lease, Originated Two Years before Latest Fiscal Year		211,939
Direct Financing Lease, Net Investment in Lease, Year One, Originated, Current Fiscal Year		0
Direct Financing Lease, Net Investment in Lease, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Direct Financing Lease, Net Investment in Lease, Year Four, Originated, Three Years before Current Fiscal Year	210,190
Performing Financial Instruments [Member] | Corporate Joint Venture [Member]
Financing Receivable, Recorded Investment [Line Items]
Net Investment in Lease, Originated Four Years before Latest Fiscal Year		332,308
Net Investment in Lease, Originated Five or More Years before Latest Fiscal Year	322,949
Net Investment in Lease	322,949	332,308
Direct Financing Lease, Net Investment in Lease, Originated Two Years before Latest Fiscal Year		0
Direct Financing Lease, Net Investment in Lease, Year One, Originated, Current Fiscal Year		0
Direct Financing Lease, Net Investment in Lease, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Direct Financing Lease, Net Investment in Lease, Year Four, Originated, Three Years before Current Fiscal Year	0
Performing Financial Instruments [Member] | Subsidiaries
Financing Receivable, Recorded Investment [Line Items]
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
Net Investment in Lease	210,190	211,939
Direct Financing Lease, Net Investment in Lease, Originated Two Years before Latest Fiscal Year		211,939
Direct Financing Lease, Net Investment in Lease, Year One, Originated, Current Fiscal Year		0
Direct Financing Lease, Net Investment in Lease, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Direct Financing Lease, Net Investment in Lease, Year Four, Originated, Three Years before Current Fiscal Year	210,190
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		115,641
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	105,641
Financing Receivable, before Allowance for Credit Loss	106,301	116,632
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	660
Financing Receivable, Year One, Originated, Current Fiscal Year		991
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
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		42,266
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	32,266
Financing Receivable, before Allowance for Credit Loss	32,266	42,266
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year One, Originated, Current Fiscal Year		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
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	73,375
Financing Receivable, before Allowance for Credit Loss	73,375	73,375
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year One, Originated, Current Fiscal Year		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Loans Receivable [Member] | Angola LNG Joint Venture | 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	0
Financing Receivable, before Allowance for Credit Loss	660	991
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	660
Financing Receivable, Year One, Originated, Current Fiscal Year		$ 991
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	$ 0

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Financial Instruments Financial Instruments - Financing Receivables, allowance for credit losses (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Jan. 01, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Direct Financing Lease, Net Investment in Lease, Allowance for Credit Loss	$ 34,000	$ 35,400	$ 34,613	$ 25,325	$ 11,520	$ 11,055	$ 34,000	$ 25,325	$ 30,177	$ 11,155
Total credit loss provision	100,700	103,736	102,270	83,513	62,017	62,180	100,700	83,513	91,920	53,300
Net Investment in Lease, Allowance for Credit Loss				7,099
Direct Financing Lease, Net Investment in Lease, Credit Loss Expense (Reversal)	(1,400)	787	4,436	13,805	465	(100)	3,800	14,200
Total credit loss expense (reversal)	(3,036)	1,466	10,350	21,496	(163)	8,880
LNG Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Direct Financing Lease, Net Investment in Lease, Credit Loss Expense (Reversal)	(1,400)			13,800
Financial Guarantee [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Off-Balance Sheet, Credit Loss, Liability	1,800	2,000	2,298	1,566	1,851	2,139	1,800	1,566	2,080	2,139
Off-Balance Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal)	(200)	(298)	218	(285)	(288)	0
Loans Receivable [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans to equity-accounted joint ventures	4,300	4,000	3,745	4,674	3,797	3,714	4,300	4,674	4,726	3,714
Financing Receivable, Credit Loss, Expense (Reversal)	300	255	(981)	877	83	0
Equity Method Investments [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Net Investment in Lease, Allowance for Credit Loss	60,600	62,336	61,614	51,948	44,849	45,272	60,600	51,948	$ 54,937	$ 36,292
Net Investment in Lease, Allowance for Credit Loss	$ (1,736)	$ 722	$ 6,677	$ 7,100	$ (423)	$ 8,980	$ 5,700	$ 15,700

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Segment Reporting - Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Voyage revenues	$ 146,577	$ 148,935	$ 448,148	$ 437,027
Voyage expenses	(7,221)	(3,950)	(20,764)	(11,596)
Vessel operating expenses	(30,426)	(30,642)	(93,051)	(85,153)
Time-charter hire expenses	(5,665)	(5,980)	(17,382)	(17,270)
Depreciation and amortization	(33,002)	(32,601)	(97,253)	(96,869)
General and administrative expenses	(12,619)	(6,165)	(26,707)	(20,215)
Income (loss) from vessel operations	57,644	69,597	192,991	160,924
Equity income (loss)	39,238	24,346	105,694	56,874
Asset Impairment Charges	0	0	0	(45,000)
LNG Segment [Member]
Segment Reporting Information [Line Items]
Voyage revenues	133,754	138,953	411,934	409,345
Voyage expenses	(1,778)	(427)	(4,748)	(2,262)
Vessel operating expenses	(25,326)	(25,871)	(78,169)	(72,562)
Time-charter hire expenses	(5,665)	(5,980)	(17,382)	(17,270)
Depreciation and amortization	(31,294)	(30,658)	(92,186)	(91,816)
General and administrative expenses	(11,691)	(5,704)	(24,562)	(18,708)
Income (loss) from vessel operations	58,000	70,313	194,887	206,727
Equity income (loss)	35,241	22,674	94,180	50,651
Asset Impairment Charges			0	0
LPG Segment [Member]
Segment Reporting Information [Line Items]
Voyage revenues	12,823	9,982	36,214	27,682
Voyage expenses	(5,443)	(3,523)	(16,016)	(9,334)
Vessel operating expenses	(5,100)	(4,771)	(14,882)	(12,591)
Time-charter hire expenses	0	0	0	0
Depreciation and amortization	(1,708)	(1,943)	(5,067)	(5,053)
General and administrative expenses	(928)	(461)	(2,145)	(1,507)
Income (loss) from vessel operations	(356)	(716)	(1,896)	(45,803)
Equity income (loss)	3,997	1,672	11,514	6,223
Asset Impairment Charges			0	(45,000)
Operating Segments
Segment Reporting Information [Line Items]
Voyage revenues	146,577	148,935	448,148	437,027
Voyage expenses	(7,221)	(3,950)	(20,764)	(11,596)
Vessel operating expenses	(30,426)	(30,642)	(93,051)	(85,153)
Time-charter hire expenses	(5,665)	(5,980)	(17,382)	(17,270)
Depreciation and amortization	(33,002)	(32,601)	(97,253)	(96,869)
General and administrative expenses	(12,619)	(6,165)	(26,707)	(20,215)
Income (loss) from vessel operations	57,644	69,597	192,991	160,924
Equity income (loss)	$ 39,238	$ 24,346	105,694	56,874
Asset Impairment Charges			$ 0	$ (45,000)

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Segment Reporting - Reconciliation of Total Segment Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Total assets	$ 4,813,960	$ 4,854,004
Unallocated:
Cash and cash equivalents	109,596	206,762	$ 201,036	$ 160,221
Advances to affiliates	14,664	4,924
LNG Segment [Member]
Segment Reporting Information [Line Items]
Total assets	4,441,653	4,395,336
LPG Segment [Member]
Segment Reporting Information [Line Items]
Total assets	248,047	246,982
Cash and Cash Equivalents [Member]
Unallocated:
Cash and cash equivalents	109,596	206,762
Affiliated Entity [Member]
Unallocated:
Advances to affiliates	$ 14,664	$ 4,924

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Chartered-in Vessels - Obligations related to Finance Leases (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Obligations relating to Finance Leases [Line Items]
Finance lease liability	$ 1,287,044	$ 1,340,922
Current obligations related to finance leases (note 5a)	73,437	71,932
Long-term obligations related to finance leases (note 5a)	$ 1,213,607	$ 1,268,990

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Chartered-in Vessels Chartered-in Vessels - Commitments Related to Finance Leases (Details) - Sep. 30, 2021 - LNG Carriers [Member] $ in Thousands	vessel	lease	USD ($)
Obligations relating to Finance Leases [Line Items]
Number Of Vessels	9	9
Finance Lease, Liability, Payment, Due			$ 1,600,000
Finance Lease, Interest Payment on Liability			350,200
Finance Lease, Liability, Payments, Remainder of Fiscal Year			34,420
Finance Lease, Liability, Payments, Due Year Two			136,959
Finance Lease, Liability, Payments, Due Year Three			135,459
Finance Lease, Liability, Payments, Due Year Four			132,011
Finance Lease, Liability, Payments, Due Year Five			129,725
Finance Lease, Liability, Payments, Due after Year Five			$ 1,068,641

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Chartered-in Vessels - Operating Leases (Details) $ in Millions	Sep. 30, 2021 USD ($) vessel
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year	$ 6.0
Lessee, Operating Lease, Liability, to be Paid, Year One	$ 11.1
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%

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Chartered-in Vessels Obligations related to Finance Leases - Additional Information (Details) - LNG Carriers [Member]	36 Months Ended
	Jan. 31, 2019	Sep. 30, 2021 vessel	Sep. 30, 2021 lease
Obligations relating to Finance Leases [Line Items]
Number Of Vessels		9	9
Sale Leaseback Transaction, Imputed Interest Rate	5.10%
Minimum [Member]
Obligations relating to Finance Leases [Line Items]
Sale Leaseback Transaction, Lease Terms	7.5
Maximum [Member]
Obligations relating to Finance Leases [Line Items]
Sale Leaseback Transaction, Lease Terms	15

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Revenue - Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Voyage revenues	$ 146,577	$ 148,935	$ 448,148	$ 437,027
LNG Segment [Member]
Segment Reporting Information [Line Items]
Voyage revenues	133,754	138,953	411,934	409,345
LPG Segment [Member]
Segment Reporting Information [Line Items]
Voyage revenues	12,823	9,982	36,214	27,682
Time charters
Segment Reporting Information [Line Items]
Voyage revenues	134,450	136,203	411,682	402,509
Time charters | LNG Segment [Member]
Segment Reporting Information [Line Items]
Voyage revenues	131,366	136,203	404,792	402,509
Time charters | LPG Segment [Member]
Segment Reporting Information [Line Items]
Voyage revenues	3,084	0	6,890	0
Voyage charters
Segment Reporting Information [Line Items]
Voyage revenues	9,739	9,982	29,324	27,682
Voyage charters | LNG Segment [Member]
Segment Reporting Information [Line Items]
Voyage revenues	0	0	0	0
Voyage charters | LPG Segment [Member]
Segment Reporting Information [Line Items]
Voyage revenues	9,739	9,982	29,324	27,682
Management fees and other
Segment Reporting Information [Line Items]
Voyage revenues	2,388	2,750	7,142	6,836
Management fees and other | LNG Segment [Member]
Segment Reporting Information [Line Items]
Voyage revenues	2,388	2,750	7,142	6,836
Management fees and other | LPG Segment [Member]
Segment Reporting Information [Line Items]
Voyage revenues	0	0	0	0
Non-lease revenue
Segment Reporting Information [Line Items]
Voyage revenues	5,988	5,373	16,828	14,910
Lease revenue
Segment Reporting Information [Line Items]
Voyage revenues	138,201	140,812	424,178	415,281
Operating Lease, Variable Lease Income	1,541	1,475	4,686	3,795
Operating Lease, Lease Income	124,312	126,678	382,615	373,566
Direct Financing Lease, Interest Income	12,348	12,659	36,877	37,920
Non Lease Component [Member]
Segment Reporting Information [Line Items]
Voyage revenues	$ 8,376	$ 8,123	$ 23,970	$ 21,746

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Revenue - Net Investments in Direct Financing Leases (Details) $ in Millions	Sep. 30, 2021 vessel	Sep. 30, 2021 lease	Sep. 30, 2021 USD ($)	Dec. 31, 2020 lease	Jan. 07, 2020 vessel	Jan. 07, 2020 lease	Jan. 07, 2020 USD ($)
Lessor, Lease, Description [Line Items]
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Remainder of Fiscal Year			$ 16.1
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Two Years			64.0
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Three Years			64.3
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Four Years			64.2
Purchase Obligation And Deferred Hire Amounts							$ 260.4
Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year One			64.2
Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, after Year Four			$ 446.5
LNG Carriers [Member]
Lessor, Lease, Description [Line Items]
Number Of Vessels	9	9
LNG Carriers [Member] | Direct Financing Lease [Member]
Lessor, Lease, Description [Line Items]
Number Of Vessels | lease		3		3
Awilco Lng Carrier
Lessor, Lease, Description [Line Items]
Number Of Vessels					2	2

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Revenue - Narrative (Details)	9 Months Ended
	Sep. 30, 2021 contract
Leases [Abstract]
Number of Forms of Contracts	2

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Revenue - Operating leases (Details) $ in Millions	Sep. 30, 2021 USD ($)
Leases [Abstract]
Lessor, Operating Lease, Payments to be Received, Remainder of Fiscal Year	$ 124.9
Lessor, Operating Lease, Payments to be Received, Two Years	309.9
Lessor, Operating Lease, Payments to be Received, Three Years	252.9
Lessor, Operating Lease, Payment to be Received, Year One	389.0
Lessor, Operating Lease, Payment to be Received, after Year Four	$ 197.4

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Revenue - Contract costs (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract]
Contract with Customer, Liability	$ 15.7	$ 28.9	$ 15.7	$ 28.9	$ 26.5	$ 24.9
Contract with Customer, Liability, Revenue Recognized	$ 14.0	$ 26.4	$ 26.5	$ 24.9

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Equity-Accounted Joint Ventures Equity-Accounted Joint Ventures (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($) vessel	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) vessel	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Schedule of Equity Method Investments [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 1,300,000		$ 1,300,000
Due from Joint Ventures, Current	$ 8,162		$ 8,162		$ 10,991
Teekay Tangguh Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Number Of Vessels | vessel	2		2
Angola LNG Joint Venture
Schedule of Equity Method Investments [Line Items]
Number Of Vessels | vessel	3		3
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		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	$ 8,700		$ 8,700		5,100
Interest Income, Related Party	$ 1,200	$ 1,100	$ 3,600	$ 3,400
Exmar LPG Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	50.00%		50.00%
Interest receivable on advances to equity accounted joint ventures	$ 0		$ 0		0
Interest Income, Related Party	100	$ 100	300	$ 700
Due from Joint Ventures	$ 32,300		$ 32,300		42,300
Exmar LPG Joint Venture [Member] | LIBOR
Schedule of Equity Method Investments [Line Items]
Variable interest rate on debt			0.50%
Angola LNG Joint Venture
Schedule of Equity Method Investments [Line Items]
Ownership percentage	33.00%		33.00%
Due from Joint Ventures, Current	$ 700		$ 700		$ 1,000
Angola LNG Joint Venture | LIBOR
Schedule of Equity Method Investments [Line Items]
Variable interest rate on debt			1.00%

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Long-Term Debt - Components of Long-Term Debt (Details) $ in Thousands, € in Millions	Sep. 30, 2021 USD ($)	Sep. 30, 2021 EUR (€)	Dec. 31, 2020 USD ($)	Dec. 31, 2020 EUR (€)
Debt Instrument [Line Items]
Total principal	$ 1,394,373		$ 1,481,936
Unamortized discount and debt issuance costs	(8,681)		(9,723)
Total debt	1,385,692		1,472,213
Less current portion	(350,372)		(250,508)
Long-term debt	1,035,320		1,221,705
U.S. Dollar-denominated Revolving Credit Facilities due in 2022
Debt Instrument [Line Items]
Total principal	105,000		100,000
Norwegian Krone-denominated Bonds due from 2021 to 2025
Debt Instrument [Line Items]
Total principal	348,630		355,514
Euro-denominated Term Loans due in 2023 and 2024
Debt Instrument [Line Items]
Total principal	128,400	€ 110.9	152,700	€ 125.0
Secured Debt
Debt Instrument [Line Items]
Total principal			873,712
US Dollar Denominated Term Loans Due through Two Thousand Thirty
Debt Instrument [Line Items]
Total principal	$ 812,304		$ 873,700

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Long-Term Debt - Revolvers - Additional Information (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021 USD ($) vessel credit_facility	Dec. 31, 2020 USD ($)
Debt Instrument [Line Items]
Line of credit facility, borrowing capacity, reduction for remainder of year	$ 169.1
Line of credit facility, borrowing capacity, reduction in year two	233.3
Line of credit facility, borrowing capacity, reduction in year three	$ 124.4
Minimum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt	0.60%
Maximum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt	3.25%
Line of Credit
Debt Instrument [Line Items]
Number Of Vessels | vessel	2
Unsecured Debt
Debt Instrument [Line Items]
Number of credit facilities | credit_facility	1
Revolving Credit Facilities
Debt Instrument [Line Items]
Line Of Credit Reduction Of Available Borrowing Capacity in Year One	$ 330.4
Revolving Credit Facilities | Line of Credit
Debt Instrument [Line Items]
Number of credit facilities | credit_facility	2
Line of credit facility, maximum borrowing capacity	$ 330.4	$ 354.8
Undrawn amount of revolving credit facilities	$ 225.4	$ 254.8
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%

XML

Long-Term Debt - USD Term Loans - Additional Information (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2021 USD ($) term_loan vessel	Dec. 31, 2020 USD ($)
Debt Instrument [Line Items]
Number of Term Loans | term_loan	6
Aggregate principal amount	$ 1,394,373	$ 1,481,936
Minimum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt	0.60%
Maximum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt	3.25%
Line of Credit
Debt Instrument [Line Items]
Number Of Vessels | vessel	2
Secured Debt
Debt Instrument [Line Items]
Aggregate principal amount		873,712
US Dollar Denominated Term Loans Due through Two Thousand Thirty
Debt Instrument [Line Items]
Aggregate principal amount	$ 812,304	$ 873,700
US Dollar Denominated Term Loans Due through Two Thousand Thirty | Asset Pledged as Collateral [Member]
Debt Instrument [Line Items]
Number Of Vessels | vessel	16
US Dollar Denominated Term Loans Due through Two Thousand Thirty | Minimum [Member]
Debt Instrument [Line Items]
Fixed interest rate on debt	4.11%
US Dollar Denominated Term Loans Due through Two Thousand Thirty | Maximum [Member]
Debt Instrument [Line Items]
Fixed interest rate on debt	4.41%
US Dollar Denominated Term Loans Due through Two Thousand Thirty | LIBOR | Minimum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt	1.85%
US Dollar Denominated Term Loans Due through Two Thousand Thirty | 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%

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Long-Term Debt - NOK Bonds - Additional Information (Details) kr in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
	Oct. 28, 2021 NOK (kr)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 NOK (kr)	Dec. 31, 2020 USD ($)	Dec. 31, 2020 NOK (kr)
Debt Instrument [Line Items]
Carrying amount of debt		$ 1,394,373		$ 1,394,373			$ 1,481,936
Foreign exchange gains (losses)		$ 2,767	$ (7,853)	$ 6,884	$ (14,738)
Minimum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt				0.60%
Maximum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt				3.25%
NIBOR | Cross-currency swap agreements | 6.00%
Debt Instrument [Line Items]
Fixed Rate Payable		7.72%		7.72%		7.72%
Derivative, Notional Amount		$ 146,500		$ 146,500		kr 1,200,000
Repayments of Unsecured Debt | kr	kr 1,200,000
Unsecured Debt
Debt Instrument [Line Items]
Senior unsecured bonds issued | kr						kr 3,100,000		kr 3,100,000
Carrying amount of debt		348,630		348,630			$ 355,514
Unsecured Debt | Cross-currency swap agreements
Debt Instrument [Line Items]
Derivative, Notional Amount		$ 360,500		$ 360,500
Unsecured Debt | Minimum [Member] | Cross-currency swap agreements
Debt Instrument [Line Items]
Fixed Rate Payable		5.74%		5.74%		5.74%
Unsecured Debt | Maximum [Member] | Cross-currency swap agreements
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%

XML

Long-Term Debt - Euro-denominated Term Loans- Additional Information (Details) $ in Thousands, € in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($) vessel term_loan subsidiary	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) vessel term_loan subsidiary	Sep. 30, 2020 USD ($)	Sep. 30, 2021 EUR (€) vessel term_loan subsidiary	Dec. 31, 2020 USD ($)	Dec. 31, 2020 EUR (€)
Debt Instrument [Line Items]
Number of Term Loans	6		6		6
Carrying amount of debt | $	$ 1,394,373		$ 1,394,373			$ 1,481,936
Foreign currency exchange gain (loss) (notes 8 and 11) | $	$ 2,767	$ (7,853)	$ 6,884	$ (14,738)
Minimum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt			0.60%
Maximum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt			3.25%
Line of Credit
Debt Instrument [Line Items]
Number Of Vessels | vessel	2		2		2
Line of Credit | Financial Guarantee [Member]
Debt Instrument [Line Items]
Number of subsidiaries that guaranteed the term loans | subsidiary	2		2		2
Euro-denominated Term Loans due in 2023 and 2024
Debt Instrument [Line Items]
Number of Term Loans	2		2		2
Carrying amount of debt	$ 128,400		$ 128,400		€ 110.9	$ 152,700	€ 125.0
Euro-denominated Term Loans due in 2023 and 2024 | Asset Pledged as Collateral [Member]
Debt Instrument [Line Items]
Number Of Vessels | vessel	2		2		2
Euro-denominated Term Loans due in 2023 and 2024 | Financial Guarantee [Member]
Debt Instrument [Line Items]
Number of subsidiaries that guaranteed the term loans | subsidiary	1		1		1
Euro-denominated Term Loans due in 2023 and 2024 | EURIBOR
Debt Instrument [Line Items]
Number of Term Loans	1		1		1
Euro-denominated Term Loans due in 2023 and 2024 | EURIBOR | Minimum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt			0.60%
Euro-denominated Term Loans due in 2023 and 2024 | EURIBOR | Maximum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt			1.95%

XML

Long-Term Debt - Other - Additional Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($) term_loan credit_facility	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) term_loan credit_facility	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Debt Instrument [Line Items]
Carrying amount of debt	$ 1,394,373		$ 1,394,373		$ 1,481,936
Weighted-average interest rate for the Partnership's long-term debt outstanding	3.25%		3.25%		3.04%
Foreign exchange gains (losses)	$ 2,767	$ (7,853)	$ 6,884	$ (14,738)
Aggregate annual long-term debt principal repayments, for remainder of year	169,100		169,100
Aggregate annual long-term debt principal repayments, year two	233,300		233,300
Aggregate annual long-term debt principal repayments, year three	124,400		124,400
Aggregate annual long-term debt principal repayments, year four	$ 185,500		$ 185,500
Number of loan facilities | term_loan	6		6
Long-term debt	$ 1,385,692		$ 1,385,692		$ 1,472,213
Long-Term Debt, Maturity, Year One	212,300		212,300
Long-Term Debt, Maturity, after Year Four	$ 469,800		$ 469,800
Fair Value Guarantee [Member]
Debt Instrument [Line Items]
Number of loan facilities | credit_facility	5		5
Long-term debt	$ 510,800		$ 510,800
Minimum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt			0.60%
Maximum [Member]
Debt Instrument [Line Items]
Variable interest rate on debt			3.25%
Long Term Debt1 [Member] | Fair Value Guarantee [Member]
Debt Instrument [Line Items]
Percentage of vessel value to outstanding loan Principal balance	115.00%		115.00%
Long Term Debt1 [Member] | Vessel | Fair Value Guarantee [Member]
Debt Instrument [Line Items]
Percentage of vessel value to outstanding loan Principal balance	686.00%		686.00%
Long Term Debt2 [Member] | Fair Value Guarantee [Member]
Debt Instrument [Line Items]
Percentage of vessel value to outstanding loan Principal balance	120.00%		120.00%
Long Term Debt2 [Member] | Vessel | Fair Value Guarantee [Member]
Debt Instrument [Line Items]
Percentage of vessel value to outstanding loan Principal balance	149.00%		149.00%
Long Term Debt3 [Member] | Fair Value Guarantee [Member]
Debt Instrument [Line Items]
Percentage of vessel value to outstanding loan Principal balance	135.00%		135.00%
Long Term Debt3 [Member] | Vessel | Fair Value Guarantee [Member]
Debt Instrument [Line Items]
Percentage of vessel value to outstanding loan Principal balance	227.00%		227.00%
Long Term Debt4 | Fair Value Guarantee [Member]
Debt Instrument [Line Items]
Percentage of vessel value to outstanding loan Principal balance	110.00%		110.00%
Long Term Debt4 | Vessel | Fair Value Guarantee [Member]
Debt Instrument [Line Items]
Percentage of vessel value to outstanding loan Principal balance	142.00%		142.00%
Long Term Debt5 Member | Fair Value Guarantee [Member]
Debt Instrument [Line Items]
Percentage of vessel value to outstanding loan Principal balance	120.00%		120.00%
Long Term Debt5 Member | Vessel | Fair Value Guarantee [Member]
Debt Instrument [Line Items]
Percentage of vessel value to outstanding loan Principal balance	163.00%		163.00%
Teekay Nakilat Joint Venture | Fair Value Guarantee [Member]
Debt Instrument [Line Items]
Number of loan facilities | term_loan	1		1

XML

Income Tax Income Tax (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Current	$ (1,285)	$ (1,927)	$ (3,935)	$ (3,308)
Deferred	(941)	507	671	1,180
Income tax expense	$ (2,226)	$ (1,420)	$ (3,264)	$ (2,128)

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Related Party Transactions - Schedule of Related Party Transactions (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($) vessel	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) vessel	Sep. 30, 2020 USD ($)	Sep. 30, 2021 lease	Sep. 30, 2018
Related Party Transaction [Line Items]
Voyage revenues	$ 146,577	$ 148,935	$ 448,148	$ 437,027
Vessel operating expenses	(30,426)	(30,642)	(93,051)	(85,153)
Time-charter hire expenses	5,665	5,980	17,382	17,270
General and administrative expenses	(12,619)	(6,165)	(26,707)	(20,215)
Equity income (loss)	39,238	24,346	105,694	56,874
Affiliated Entity [Member]
Related Party Transaction [Line Items]
Voyage revenues	9,869	9,704	29,285	27,881
Vessel operating expenses	(451)	(1,877)	(5,609)	(4,610)
Time-charter hire expenses	5,665	5,980	17,382	17,270
General and administrative expenses	(9,382)	(3,998)	(18,374)	(11,583)
Equity income (loss)	$ 609	609	$ 1,808	1,815
LNG Carriers [Member]
Related Party Transaction [Line Items]
Number Of Vessels	9		9		9
LNG Carriers [Member] | Affiliated Entity [Member] | Yamal Lng Joint Venture [Member]
Related Party Transaction [Line Items]
Number Of Vessels | vessel	6		6
Bahrain LNG Joint Venture [Member] | Affiliated Entity [Member] | Management Service [Member]
Related Party Transaction [Line Items]
Voyage revenues	$ 2,400	2,400	$ 7,200	6,500
Bahrain LNG Joint Venture [Member] | Affiliated Entity [Member] | Cargo and Freight [Member]
Related Party Transaction [Line Items]
Voyage revenues	$ 7,500	$ 7,300	$ 22,100	$ 21,400
Bahrain Spirit [Member]
Related Party Transaction [Line Items]
Lessor, Direct financing lease, Term of contract						21 years

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Related Party Transactions - Non-interest Bearing Advances - Additional Information (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Related Party Transaction [Line Items]
Advances to affiliates	$ 14,664	$ 4,924
Advances from affiliates	13,802	11,047
Affiliated Entity [Member]
Related Party Transaction [Line Items]
Advances to affiliates	14,700	4,900
Advances from affiliates	$ 13,800	$ 11,000

XML

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	Sep. 30, 2021	Dec. 31, 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				87,000	87,000	10,750
Subsidiaries of Teekay LNG [Member]
Related Party Transaction [Line Items]
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest		1.00%

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Derivative Instruments and Hedging Activities - Summary of Cross Currency Swap Agreements (Details) - Cross-currency swap agreements kr in Thousands, $ in Thousands	9 Months Ended
	Sep. 30, 2021 USD ($)	Sep. 30, 2021 NOK (kr)
Derivative [Line Items]
Fair Value / Carrying Amount of Asset (Liability) $	$ (16,642)
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) $	$ (9,932)
Weighted- Average Remaining Term (Years)	1 month 6 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) $	$ (10,601)
Weighted- Average Remaining Term (Years)	1 year 10 months 24 days
NIBOR | 5.15%
Derivative [Line Items]
Derivative, Notional Amount	$ 112,000	kr 1,000,000
Derivative, Basis Spread on Variable Rate	5.15%	5.15%
Fixed Rate Payable	5.74%	5.74%
Fair Value / Carrying Amount of Asset (Liability) $	$ 3,891
Weighted- Average Remaining Term (Years)	3 years 10 months 24 days

XML

Derivative Instruments and Hedging Activities - Interest Rate Swap Agreements (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2021 USD ($)
Minimum [Member]
Derivative [Line Items]
Variable interest rate on debt	0.60%
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	$ (33,578)
U.S. Dollar-denominated interest rate swaps 1 | LIBOR
Derivative [Line Items]
Derivative, Notional Amount	181,906
Fair Value / Carrying Amount of (Liability)	$ 816
Weighted- Average Remaining Term (Years)	4 years 4 months 24 days
Fixed Rate Payable	0.70%
U.S. Dollar-denominated interest rate swaps 3 | LIBOR
Derivative [Line Items]
Derivative, Notional Amount	$ 139,169
Fair Value / Carrying Amount of (Liability)	$ (1,963)
Weighted- Average Remaining Term (Years)	3 years
Fixed Rate Payable	1.40%
U.S. Dollar-denominated interest rate swaps 4 | LIBOR
Derivative [Line Items]
Derivative, Notional Amount	$ 283,729
Fair Value / Carrying Amount of (Liability)	$ (20,757)
Weighted- Average Remaining Term (Years)	2 years 3 months 18 days
Fixed Rate Payable	3.60%
U.S. Dollar-denominated interest rate swaps 5 | LIBOR
Derivative [Line Items]
Derivative, Notional Amount	$ 150,761
Interest Rate Fair Value Hedge Derivative at Fair Value, Net	$ (7,773)
Weighted- Average Remaining Term (Years)	5 years 2 months 12 days
Fixed Rate Payable	2.30%
Euro-denominated interest rate swaps | EURIBOR
Derivative [Line Items]
Derivative, Notional Amount	$ 58,613
Fair Value / Carrying Amount of (Liability)	$ (3,901)
Weighted- Average Remaining Term (Years)	1 year 10 months 24 days
Fixed Rate Payable	3.90%

XML

Derivative Instruments and Hedging Activities - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Interest rate swaps and cross currency swaps agreement
Derivative [Line Items]
Fair value of derivative asset	$ 4.7	$ 4.5
Derivative Liability, Fair Value, Gross Liability	54.9	73.7
Derivative
Derivative [Line Items]
Deposit as security for swap liabilities	$ 0.0	$ 3.8

XML

Derivative Instruments and Hedging Activities -Classification and Fair Value Amounts of Derivative Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Derivatives, Fair Value [Line Items]
Current portion of derivative assets	$ 465	$ 0
Derivative assets	5,253	4,505
Accrued liabilities	(66,414)	(81,706)
Current portion of derivative liabilities	(27,023)	(56,925)
Derivative liabilities (note 11)	25,910	32,971
Cross currency swap agreements
Derivatives, Fair Value [Line Items]
Current portion of derivative assets	465	0
Derivative assets	3,430	4,505
Accrued liabilities	(740)	(701)
Current portion of derivative liabilities	(11,908)	(11,434)
Derivative liabilities (note 11)	7,889	7,887
Derivative
Derivatives, Fair Value [Line Items]
Current portion of derivative assets	465	0
Derivative assets	5,253	4,505
Accrued liabilities	(3,005)	(5,594)
Current portion of derivative liabilities	(27,023)	(56,925)
Derivative liabilities (note 11)	25,910	32,971
Not Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Current portion of derivative assets	0	0
Derivative assets	1,823	0
Accrued liabilities	(2,203)	(4,823)
Current portion of derivative liabilities	(12,079)	(42,329)
Derivative liabilities (note 11)	13,348	15,453
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Current portion of derivative assets	0	0
Derivative assets	0	0
Accrued liabilities	(62)	(70)
Current portion of derivative liabilities	(3,036)	(3,162)
Derivative liabilities (note 11)	$ 4,673	$ 9,631

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Derivative Instruments and Hedging Activities - Gain (Loss) for Derivative Instruments Not Designated or Qualifying as Hedging Instruments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Unrealized gains (losses)			$ 34,178	$ (18,553)
Realized and unrealized gain (loss) on non-designated derivative instruments (note 11)	$ 101	$ (1,327)	3,849	(30,314)
Foreign currency exchange gain (loss) (notes 8 and 11)	2,767	(7,853)	6,884	(14,738)
Unrealized gains (losses)			13,125	(10,697)
Foreign Currency Gain (Loss) [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Realized gains (losses)				(38,760)
Gain (Loss) on Derivative Instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Realized gains (losses)			(30,329)	(11,761)
Realized and unrealized gain (loss) on non-designated derivative instruments (note 11)			3,849	(30,314)
Derivative Instruments Not Designated As Hedging Instruments Unrealized Gain (Loss) Net			34,178	(18,553)
Interest rate swap agreements | Gain (Loss) on Derivative Instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Realized gains (losses)	(3,919)	(4,947)	(12,317)	(11,520)
Realized and unrealized gain (loss) on non-designated derivative instruments (note 11)	101	(1,327)	21,861	(30,275)
Derivative Instruments Not Designated As Hedging Instruments Unrealized Gain (Loss) Net	4,020	3,620	34,178	(18,755)
Foreign Exchange Forward [Member] | Gain (Loss) on Derivative Instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Realized gains (losses)			0	(241)
Realized and unrealized gain (loss) on non-designated derivative instruments (note 11)			0	(39)
Derivative Instruments Not Designated As Hedging Instruments Unrealized Gain (Loss) Net			0	202
Cross currency swap agreements | Foreign Currency Gain (Loss) [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Realized gains (losses)	(1,595)	(1,669)
Unrealized gains (losses)	(3,952)	1,490
Cross-currency swap agreements termination | Foreign Currency Gain (Loss) [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Foreign currency exchange gain (loss) (notes 8 and 11)			0	(33,844)
Realized gains (losses)			0	(33,844)
Unrealized gains (losses)			0	0
Cross-currency swap agreements | Foreign Currency Gain (Loss) [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Realized and unrealized gain (loss) on non-designated derivative instruments (note 11)			(5,318)	(40,929)
Foreign currency exchange gain (loss) (notes 8 and 11)	$ (5,547)	$ (179)	(5,318)	(7,085)
Realized gains (losses)			(4,233)	(4,916)
Unrealized gains (losses)			(1,085)	(2,169)
Interest rate swaps terminated | Gain (Loss) on Derivative Instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Realized gains (losses)			(18,012)	0
Realized and unrealized gain (loss) on non-designated derivative instruments (note 11)			(18,012)	0
Derivative Instruments Not Designated As Hedging Instruments Unrealized Gain (Loss) Net			$ 0	$ 0

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Derivative Instruments and Hedging Activities - Effective Portion of Gains (Losses) on Interest Rate Swap Agreements (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Derivative [Line Items]
Amount of Loss Recognized in OCI	$ 2,942	$ (959)	$ 24,001	$ (69,593)
Interest expense
Derivative [Line Items]
Amount of Loss Recognized in OCI	1,040	616	5,080	(9,610)
Amount of Loss Reclassified from Accumulated OCI to Interest Expense	$ (840)	$ (835)	$ (2,480)	$ (1,469)

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Commitments and Contingencies - Commitments to Fund Newbuilding and Other Construction Contract Costs (Details) - USD ($) $ in Thousands	1 Months Ended
	Jun. 30, 2019	Sep. 30, 2021
Unrecorded Unconditional Purchase Obligation [Line Items]
Total estimated remaining costs		$ 31,896
Estimated Costs Remainder of 2020		5,843
Unrecorded Unconditional Purchase Obligation, to be Paid, Year One		26,053
Equity Method Investments [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Total estimated remaining costs		11,339
Estimated Costs Remainder of 2020		0
Unrecorded Unconditional Purchase Obligation, to be Paid, Year One		11,339
Consolidated Entities [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Total estimated remaining costs		20,557
Estimated Costs Remainder of 2020		5,843
Long-term Purchase Commitment, Amount	$ 53,500
Unrecorded Unconditional Purchase Obligation, to be Paid, Year One		$ 14,714
Bahrain LNG Joint Venture [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Equity Method Investment, Ownership Percentage		30.00%
Bahrain LNG Joint Venture [Member] | Building
Unrecorded Unconditional Purchase Obligation [Line Items]
Line of credit facility, maximum borrowing capacity		$ 23,500
Line of Credit Facility, Remaining Borrowing Capacity		7,100
Bahrain LNG Joint Venture [Member] | Construction [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Total estimated remaining costs		$ 11,300

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Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Loss Contingencies [Line Items]
Working Capital Surplus (Deficit)	$ (378,500)
Long-term Debt, Current Maturities	350,372	$ 250,508
Teekay Tangguh Joint Venture [Member]
Loss Contingencies [Line Items]
Estimated Tax Indemnification	$ 5,300	$ 5,700
Teekay Lng [Member] | Teekay Tangguh Joint Venture [Member]
Loss Contingencies [Line Items]
Percentage of ownership interest	70.00%

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Total Capital and Net Income Per Unit Partnership Units and Net Income Per Common Unit (Details) - USD ($) shares in Thousands, $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	May 11, 2020
Capital Unit [Line Items]
Limited Partners' Capital Account, Units Issued	87,000		87,000	10,750
Common Unit, Issuance Value				$ 122,600
General partner	$ (48,230)		$ (46,182)	(2,300)
Limited Partners' Capital Account	$ 1,580,034		$ 1,465,408	$ 2,300
Public | Teekay Lng [Member]
Capital Unit [Line Items]
Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest	58.70%
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%	1.80%

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Total Capital and Net Income Per Unit Net Income (Loss) Per Common Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Class of Stock [Line Items]
Limited partners’ interest in net income	$ 59,487	$ 33,255	$ 185,267	$ 32,421
Weighted average number of common units	87,120,897	86,951,234	87,081,753	82,010,753
Dilutive effect of unit-based compensation	112,094	89,812	136,657	99,073
Weighted average number of common units and common unit equivalents (in units)	87,232,991	87,041,046	87,218,410	82,109,826
Basic (usd per unit)	$ 0.68	$ 0.38	$ 2.13	$ 0.40
Diluted (usd per unit)	$ 0.68	$ 0.38	$ 2.12	$ 0.39
Limited Partners | Preferred Units
Class of Stock [Line Items]
Dividends, Preferred Stock, Cash	$ 6,400	$ 6,400	$ 19,300	$ 19,300

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Total Capital and Net Income Per Unit Common Unit Repurchases (Details) - USD ($)	3 Months Ended		9 Months Ended	34 Months Ended
	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2020	Sep. 30, 2021
Accelerated Share Repurchases [Line Items]
Partners' Capital Account, Treasury Units, Purchased		$ 15,635,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount				$ 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			1,400,000
General Partner
Accelerated Share Repurchases [Line Items]
Partners' Capital Account, Treasury Units, Purchased		$ 313,000
General Partner | Repurchase Agreements [Member] | Common Units
Accelerated Share Repurchases [Line Items]
Partners' Capital Account, Treasury Units, Purchased			$ 300,000
Limited Partners | Common Units
Accelerated Share Repurchases [Line Items]
Partners' Capital Account, Units, Treasury Units Purchased	23,000	(1,373,000)
Partners' Capital Account, Treasury Units, Purchased		$ 15,322,000
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			$ 15,300,000	$ 44,200,000

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Write-down of Vessels Write-Down of Vessels (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($) vessel	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($) vessel	Mar. 31, 2020 vessel
Property, Plant and Equipment [Line Items]
Asset Impairment Charges	$ 0	$ 0	$ 0	$ 45,000
Asset Impairment Charges	$ 0	$ 0	$ 0	$ 45,000
Write-down and Sale of Vessels			Write-down of VesselsIn 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 at that time, using appraised values, primarily due to the lower near-term outlook for these types of vessels partly as a result of the economic environment at that time (including the economic impact of the COVID-19 global pandemic), as well as the Partnership receiving notification that the Partnership's then-existing commercial management agreement with a third-party commercial manager would be terminated and replaced by a new commercial management agreement in September 2020. The total impairment charge of $45.0 million was included in write-down of vessels for the nine months ended September 30, 2020 in the Partnership's consolidated statements of income.
LPG Carriers [Member]
Property, Plant and Equipment [Line Items]
Number Of Vessels | vessel					7
LPG Carriers [Member]
Property, Plant and Equipment [Line Items]
Number Of Vessels | vessel		6		6	6
Asset Impairment Charges				$ 45,000
Asset Impairment Charges				$ 45,000

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Subsequent Events (Details) - Subsequent Event [Member] shares in Millions	Oct. 04, 2021 USD ($) shares
Gas management operations
Subsequent Event [Line Items]
Proceeds from Divestiture of Interest in Consolidated Subsidiaries	$ 3,340,000
Teekay Lng [Member]
Subsequent Event [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	41.00%
Teekay Lng [Member] | General Partner
Subsequent Event [Line Items]
Proceeds from Sale of Interest in Partnership Unit	$ 26,400,000
Partners' Capital Account, Unit-based Payment Arrangement, Number of Units | shares	1.6
Per share proceeds from Sale of Interest in Partnership Unit	$ 17.00
Common Class A | Teekay Corp [Domain]
Subsequent Event [Line Items]
Partners' Capital Account, Number of Units Owned by Controlling Interest	36,000,000
Capital Unit, Class A | Teekay Lng [Member]
Subsequent Event [Line Items]
Per share proceeds from Sale of Interest in Partnership Unit	$ 17.00

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Label	Element	Value
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Retained Earnings (Accumulated Deficit)	us-gaap_RetainedEarningsAccumulatedDeficit	$ (53,300,000)
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | General Partner [Member]
Retained Earnings (Accumulated Deficit)	us-gaap_RetainedEarningsAccumulatedDeficit	(1,016,000)
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Limited Partner [Member]
Retained Earnings (Accumulated Deficit)	us-gaap_RetainedEarningsAccumulatedDeficit	(49,810,000)
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Noncontrolling Interest [Member]
Retained Earnings (Accumulated Deficit)	us-gaap_RetainedEarningsAccumulatedDeficit	$ (2,474,000)