Enbridge (ENB) 10-Q 7 May 20 2020 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Mar. 31, 2020	Apr. 30, 2020
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2020
Document Transition Report	false
Entity File Number	1-10934
Entity Registrant Name	ENBRIDGE INC
Entity Incorporation, State or Country Code	Z4
Entity Tax Identification Number	98-0377957
Entity Address, Address Line One	200, 425 - 1st Street S.W.
Entity Address, City or Town	Calgary
Entity Address, State or Province	AB
Entity Address, Country	CA
Entity Address, Postal Zip Code	T2P 3L8
City Area Code	403
Local Phone Number	231-3900
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		2,025,101,269
Entity Central Index Key	0000895728
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Common shares
Entity Information [Line Items]
Title of 12(b) Security	Common Shares
Trading Symbol	ENB
Security Exchange Name	NYSE
6.375% Fixed-to-Floating Rate Subordinated Notes Series 2018-B due 2078
Entity Information [Line Items]
Title of 12(b) Security	6.375% Fixed-to-Floating Rate Subordinated Notes Series 2018-B due 2078
Trading Symbol	ENBA
Security Exchange Name	NYSE

CONSOLIDATED STATEMENTS OF EARN

CONSOLIDATED STATEMENTS OF EARNINGS - CAD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating revenues
Total operating revenues	$ 12,013	$ 12,856
Operating expenses
Operating and administrative	1,600	1,625
Depreciation and amortization	882	840
Total operating expenses	10,500	10,237
Operating income/(loss)	1,513	2,619
Income from equity investments	163	413
Impairment of equity investments	(1,736)	0
Other income/(expense)
Net foreign currency gain/(loss)	(956)	214
Other	(191)	46
Interest expense	(706)	(685)
Earnings/(loss) before income taxes	(1,913)	2,607
Income tax recovery/(expense)	549	(584)
Earnings/(loss)	(1,364)	2,023
(Earnings)/loss attributable to noncontrolling interests	31	(37)
Earnings/(loss) attributable to controlling interests	(1,333)	1,986
Preference share dividends	(96)	(95)
Earnings/(loss) attributable to common shareholders	$ (1,429)	$ 1,891
Earnings/(loss) per common share attributable to common shareholders (in Canadian dollars per share)	$ (0.71)	$ 0.94
Diluted earnings/(loss) per common share attributable to common shareholders (in Canadian dollars per share)	$ (0.71)	$ 0.94
Commodity sales
Operating revenues
Total operating revenues	$ 7,389	$ 6,632
Operating expenses
Cost of goods and services sold	7,163	6,565
Transportation and other services
Operating revenues
Total operating revenues	3,208	4,348
Gas distribution revenue
Operating revenues
Total operating revenues	1,416	1,876
Operating expenses
Cost of goods and services sold	$ 855	$ 1,207

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - CAD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Earnings/(loss)	$ (1,364)	$ 2,023
Other comprehensive income/(loss), net of tax
Change in unrealized loss on cash flow hedges	(513)	(192)
Change in unrealized gain/(loss) on net investment hedges	(715)	94
Other comprehensive income/(loss) from equity investees	(10)	12
Excluded components of fair value hedges	3	0
Reclassification to earnings of loss on cash flow hedges	32	11
Reclassification to earnings of pension and other postretirement benefits (OPEB) amounts	3	38
Foreign currency translation adjustments	5,637	(1,291)
Other comprehensive income/(loss), net of tax	4,437	(1,328)
Comprehensive income	3,073	695
Comprehensive (income)/loss attributable to noncontrolling interests	145	(13)
Comprehensive income attributable to controlling interests	2,928	708
Preference share dividends	(96)	(95)
Comprehensive income attributable to common shareholders	$ 2,832	$ 613

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - CAD ($) $ in Millions	Total	Preference shares	Common shares	Additional paid-in capital	Retained earnings/(deficit)	Accumulated other comprehensive income/(loss)	Reciprocal shareholding	Total Enbridge Inc. shareholders' equity	Noncontrolling interests
Balance at the beginning of the period at Dec. 31, 2018		$ 7,747	$ 64,677	$ 0	$ (5,538)	$ 2,672	$ (88)		$ 3,965
Increase (Decrease) in Stockholders' Equity
Stock-based compensation				4
Options exercised			51	(43)
Change in reciprocal interest	$ 109						37
Other				2
Earnings/(loss) attributable to controlling interests	1,986				1,986
Preference share dividends					(95)
Dividends paid to reciprocal shareholder					5
Other comprehensive income/(loss) attributable to common shareholders, net of tax						(1,278)
Other					2	55			5
Earnings/(loss) attributable to noncontrolling interests									37
Change in unrealized loss on cash flow hedges									(1)
Foreign currency translation adjustments									(49)
Other comprehensive income/(loss) attributable to noncontrolling interests, net of tax									(50)
Comprehensive income/(loss) attributable to noncontrolling interests	13								(13)
Contributions									3
Distributions									(46)
Redemption of preferred shares held by subsidiary									(300)
Balance at the end of the period at Mar. 31, 2019	$ 73,919	7,747	64,728	72	(3,640)	1,449	(51)	$ 70,305	3,614
Increase (Decrease) in Stockholders' Equity
Dividends paid per common share (in Canadian dollars per share)	$ 0.738
Earnings/(loss) per common share attributable to common shareholders (in Canadian dollars per share)	0.94
Diluted earnings/(loss) per common share attributable to common shareholders (in Canadian dollars per share)	$ 0.94
Balance at the beginning of the period at Dec. 31, 2019	$ 69,407	7,747	64,746	187	(6,314)	(272)	(51)		3,364
Increase (Decrease) in Stockholders' Equity
Stock-based compensation				14
Options exercised			14	(16)
Change in reciprocal interest				12			4
Other				5
Earnings/(loss) attributable to controlling interests	(1,333)				(1,333)
Preference share dividends					(96)
Dividends paid to reciprocal shareholder					5
Other comprehensive income/(loss) attributable to common shareholders, net of tax						4,261
Other					(4)	0			0
Earnings/(loss) attributable to noncontrolling interests									(31)
Change in unrealized loss on cash flow hedges									(2)
Foreign currency translation adjustments									178
Other comprehensive income/(loss) attributable to noncontrolling interests, net of tax									176
Comprehensive income/(loss) attributable to noncontrolling interests	(145)								145
Contributions									15
Distributions									(76)
Redemption of preferred shares held by subsidiary									0
Balance at the end of the period at Mar. 31, 2020	$ 72,291	$ 7,747	$ 64,760	$ 202	$ (7,808)	$ 3,989	$ (47)	$ 68,843	$ 3,448
Increase (Decrease) in Stockholders' Equity
Dividends paid per common share (in Canadian dollars per share)	$ 0.810
Earnings/(loss) per common share attributable to common shareholders (in Canadian dollars per share)	(0.71)
Diluted earnings/(loss) per common share attributable to common shareholders (in Canadian dollars per share)	$ (0.71)

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - CAD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating activities
Earnings/(loss)	$ (1,364)	$ 2,023
Adjustments to reconcile earnings to net cash provided by operating activities:
Depreciation and amortization	882	840
Deferred income tax (recovery)/expense	(713)	435
Changes in unrealized (gain)/loss on derivative instruments, net	1,556	(538)
Earnings from equity investments	(163)	(413)
Distributions from equity investments	428	466
Impairment of equity investments	1,736	0
Other	253	30
Changes in operating assets and liabilities	194	(667)
Net cash provided by operating activities	2,809	2,176
Investing activities
Capital expenditures	(1,147)	(1,612)
Long-term investments and restricted long-term investments	(87)	(565)
Distributions from equity investments in excess of cumulative earnings	77	139
Additions to intangible assets	(69)	(26)
Affiliate loans, net	(44)	(84)
Net cash (used in)/provided by investing activities	(1,270)	(2,148)
Financing activities
Net change in short-term borrowings	(63)	(154)
Net change in commercial paper and credit facility draws	1,159	2,773
Debenture and term note issues, net of issue costs	990	1,195
Debenture and term note repayments	(1,657)	(1,789)
Contributions from noncontrolling interests	15	3
Distributions to noncontrolling interests	(76)	(46)
Common shares issued	1	18
Preference share dividends	(96)	(90)
Common share dividends	(1,641)	(1,486)
Redemption of preferred shares held by subsidiary	0	(300)
Other	(18)	(25)
Net cash provided by/(used in) financing activities	(1,386)	99
Effect of translation of foreign denominated cash and cash equivalents and restricted cash	11	(7)
Net increase/(decrease) in cash and cash equivalents and restricted cash	164	120
Cash and cash equivalents and restricted cash at beginning of period	676	637
Cash and cash equivalents and restricted cash at end of period	$ 840	$ 757

CONSOLIDATED STATEMENTS OF FINA

CONSOLIDATED STATEMENTS OF FINANCIAL POSITION - CAD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 799	$ 648
Restricted cash	41	28
Accounts receivable and other	6,574	6,781
Accounts receivable from affiliates	38	69
Inventory	699	1,299
Total current assets	8,151	8,825
Property, plant and equipment, net	98,483	93,723
Long-term investments	15,986	16,528
Restricted long-term investments	443	434
Deferred amounts and other assets	8,155	7,433
Intangible assets, net	2,239	2,173
Goodwill	35,549	33,153
Deferred income taxes	1,248	1,000
Total assets	170,254	163,269
Current liabilities
Short-term borrowings	835	898
Accounts payable and other	8,306	10,063
Accounts payable to affiliates	11	21
Interest payable	615	624
Current portion of long-term debt	4,221	4,404
Total current liabilities	13,988	16,010
Long-term debt	63,571	59,661
Other long-term liabilities	10,499	8,324
Deferred income taxes	9,905	9,867
Total liabilities	97,963	93,862
Contingencies
Share capital
Preference shares	7,747	7,747
Common shares (2,025 and 2,025 outstanding at March 31, 2020 and December 31, 2019, respectively)	64,760	64,746
Additional paid-in capital	202	187
Deficit	(7,808)	(6,314)
Accumulated other comprehensive income/(loss)	3,989	(272)
Reciprocal shareholding	(47)	(51)
Total Enbridge Inc. shareholders’ equity	68,843	66,043
Noncontrolling interests	3,448	3,364
Total equity	72,291	69,407
Total liabilities and equity	$ 170,254	$ 163,269

CONSOLIDATED STATEMENTS OF FI_2

CONSOLIDATED STATEMENTS OF FINANCIAL POSITION (Parenthetical) - shares shares in Millions	Mar. 31, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Common shares, outstanding (in shares)	2,025	2,025

BASIS OF PRESENTATION

BASIS OF PRESENTATION	3 Months Ended
	Mar. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BASIS OF PRESENTATION	BASIS OF PRESENTATION The accompanying unaudited interim consolidated financial statements of Enbridge Inc. ("we", "our", "us" and "Enbridge") have been prepared in accordance with generally accepted accounting principles in the United States of America (U.S. GAAP) and Regulation S-X for interim consolidated financial information. They do not include all of the information and notes required by U.S. GAAP for annual consolidated financial statements and should therefore be read in conjunction with our audited consolidated financial statements and notes for the year ended December 31, 2019 . In the opinion of management, the interim consolidated financial statements contain all normal recurring adjustments necessary to present fairly our financial position, results of operations and cash flows for the interim periods reported. These interim consolidated financial statements follow the same significant accounting policies as those included in our audited consolidated financial statements for the year ended December 31, 2019 , except for the adoption of new standards (Note 2) . Amounts are stated in Canadian dollars unless otherwise noted. Our operations and earnings for interim periods can be affected by seasonal fluctuations within the gas distribution utility businesses, as well as other factors such as the supply of and demand for crude oil and natural gas, and may not be indicative of annual results.

CHANGES IN ACCOUNTING POLICIES

CHANGES IN ACCOUNTING POLICIES	3 Months Ended
	Mar. 31, 2020
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
CHANGES IN ACCOUNTING POLICIES	CHANGES IN ACCOUNTING POLICIES ADOPTION OF NEW ACCOUNTING STANDARDS Clarifying Interaction between Collaborative Arrangements and Revenue from Contracts with Customers Effective January 1, 2020, we adopted Accounting Standards Update (ASU) 2018-18 on a retrospective basis. The new standard was issued in November 2018 to provide clarity on when transactions between entities in a collaborative arrangement should be accounted for under the new revenue standard, Accounting Standards Codification (ASC) 606. In determining whether transactions in collaborative arrangements should be accounted for under the revenue standard, the update specifies that entities shall apply unit of account guidance to identify distinct goods or services and whether such goods and services are separately identifiable from other promises in the contract. ASU 2018-18 also precludes entities from presenting transactions with a collaborative partner which are not in scope of the new revenue standard together with revenue from contracts with customers. The adoption of this ASU did not have a material impact on our consolidated financial statements. Disclosure Effectiveness Effective January 1, 2020, we adopted ASU 2018-13 on both a retrospective and prospective basis depending on the change. The new standard was issued to improve the disclosure requirements for fair value measurements by eliminating and modifying some disclosures, while also adding new disclosures. The adoption of this ASU did not have a material impact on our consolidated financial statements. Accounting for Credit Losses Effective January 1, 2020, we adopted ASU 2016-13 on a modified retrospective basis. The new standard was issued in June 2016 with the intent of providing financial statement users with more useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. The previous accounting treatment used the incurred loss methodology for recognizing credit losses that delayed the recognition until it was probable a loss had been incurred. The accounting update adds a new impairment model, known as the current expected credit loss model, which is based on expected losses rather than incurred losses. Under the new guidance, an entity recognizes as an allowance its estimate of expected credit losses, which the Financial Accounting Standards Board believes results in more timely recognition of such losses. Further, ASU 2018-19 was issued in November 2018 to clarify that operating lease receivables should be accounted for under the new leases standard, ASC 842, and are not within the scope of ASC 326, Financial Instruments - Credit Losses. For accounts receivable, a loss allowance matrix is utilized to measure lifetime expected credit losses. The matrix contemplates historical credit losses by age of receivables, adjusted for any forward-looking information and management expectations. Other loan receivables and off-balance sheet commitments in scope of the new standard utilize a discounted cash flow methodology which calculates the current expected credit losses based on historical default probability rates associated with the credit rating of the counterparty and the related term of the loan or commitment, adjusted for forward-looking information and management expectations. On January 1, 2020 we recorded $66 million of additional Deficit on our Statements of Financial Position in connection with the adoption of ASU 2016-13. The adoption of this ASU did not have a material impact on the Consolidated Statements of Earnings, Comprehensive Income or Cash Flows during the period. FUTURE ACCOUNTING POLICY CHANGES Reference Rate Reform ASU 2020-04 was issued in March 2020 to provide temporary optional guidance in accounting for reference rate reform. The new guidance provides optional expedients and exceptions for applying generally accepted accounting principles when accounting for contract modifications, hedging relationships and other transactions impacted by rate reform, subject to meeting certain criteria. ASU 2020-04 is effective as of March 12, 2020 through December 31, 2022. We are currently assessing the impact of the new standard and the rate reform on our consolidated financial statements. Clarifying Interaction between Equity Securities, Equity Method Investments and Derivatives ASU 2020-01 was issued in January 2020 and clarifies that observable transactions should be considered for the purpose of applying the measurement alternative in accordance with ASC 321 immediately before the application or upon discontinuance of the equity method of accounting. Furthermore, the ASU clarifies that forward contracts or purchased options on equity securities are not out of scope of ASC 815 guidance only because, upon the contracts’ exercise, the equity securities could be accounted for under the equity method of accounting or fair value option. ASU 2020-01 is effective January 1, 2021 with early adoption permitted and is applied prospectively. We are currently assessing the impact of the new standard on our consolidated financial statements. Accounting for Income Taxes ASU 2019-12 was issued in December 2019 with the intent of simplifying the accounting for income taxes. The accounting update removes certain exceptions to the general principles in ASC 740 as well as provides simplification by clarifying and amending existing guidance. ASU 2019-12 is effective January 1, 2021 and entities are permitted to adopt the standard early. We are currently assessing the impact of the new standard on our consolidated financial statements. Disclosure Effectiveness ASU 2018-14 was issued in August 2018 to improve disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. The amendment modifies the current guidance by adding and removing several disclosure requirements while also clarifying the guidance on current disclosure requirements. ASU 2018-14 is effective January 1, 2021 and entities are permitted to adopt the standard early. The adoption of ASU 2018-14 is not expected to have a material impact on our consolidated financial statements.

REVENUES

REVENUES	3 Months Ended
	Mar. 31, 2020
Revenue from Contract with Customer [Abstract]
REVENUES	REVENUES REVENUE FROM CONTRACTS WITH CUSTOMERS Major Products and Services Liquids Pipelines Gas Transmission and Midstream Gas Distribution and Storage Renewable Power Generation Energy Services Eliminations and Other Consolidated Three months ended (millions of Canadian dollars) Transportation revenues 2,440 1,255 215 — — — 3,910 Storage and other revenues 26 79 47 — — — 152 Gas gathering and processing revenues — 7 — — — — 7 Gas distribution revenue — — 1,417 — — — 1,417 Electricity and transmission revenues — — — 50 — — 50 Total revenue from contracts with customers 2,466 1,341 1,679 50 — — 5,536 Commodity sales — — — — 7,389 — 7,389 Other revenues 1,2 (1,017 ) 16 (1 ) 103 (7 ) (6 ) (912 ) Intersegment revenues 85 — 4 — 16 (105 ) — Total revenues 1,534 1,357 1,682 153 7,398 (111 ) 12,013 Liquids Pipelines Gas Transmission and Midstream Gas Distribution and Storage Renewable Power Generation Energy Services Eliminations and Other Consolidated Three months ended (millions of Canadian dollars) Transportation revenues 2,214 1,137 249 — — — 3,600 Storage and other revenues 27 53 54 — — — 134 Gas gathering and processing revenues — 116 — — — — 116 Gas distribution revenues — — 1,856 — — — 1,856 Electricity and transmission revenues — — — 50 — — 50 Total revenue from contracts with customers 2,241 1,306 2,159 50 — — 5,756 Commodity sales — — — — 6,632 — 6,632 Other revenues 1, 2 340 10 29 102 6 (19 ) 468 Intersegment revenues 77 2 3 — 35 (117 ) — Total revenues 2,658 1,318 2,191 152 6,673 (136 ) 12,856 1 Includes mark-to-market gains/(losses) from our hedging program for the three months ended March 31, 2020 and 2019 of $1,106 million loss and $258 million gain, respectively. 2 Includes revenues from lease contracts for the three months ended March 31, 2020 and 2019 of $158 million and $164 million , respectively. We disaggregate revenues into categories which represent our principal performance obligations within each business segment because these revenues categories represent the most significant revenue streams in each segment and consequently are considered to be the most relevant revenues information for management to consider in evaluating performance. Contract Balances Receivables Contract Assets Contract Liabilities (millions of Canadian dollars) Balance as at December 31, 2019 2,099 216 1,424 Balance as at March 31, 2020 2,287 224 1,500 Contract receivables represent the amount of receivables derived from contracts with customers. Contract assets represent the amount of revenues which has been recognized in advance of payments received for performance obligations we have fulfilled (or partially fulfilled) and prior to the point in time at which our right to the payment is unconditional. Amounts included in contract assets are transferred to accounts receivable when our right to the consideration becomes unconditional. Contract liabilities represent payments received for performance obligations which have not been fulfilled. Contract liabilities primarily relate to make-up rights and deferred revenues. Revenue recognized during the three months ended March 31, 2020 included in contract liabilities at the beginning of the period was $86 million . Increases in contract liabilities from cash received, net of amounts recognized as revenues during the three months ended March 31, 2020 were $76 million . Performance Obligations There were no material revenues recognized in the three months ended March 31, 2020 from performance obligations satisfied in previous periods. Revenues to be Recognized from Unfulfilled Performance Obligations Total revenues from performance obligations expected to be fulfilled in future periods is $68.0 billion , of which $5.5 billion and $6.4 billion is expected to be recognized during the nine months ending December 31, 2020 , and the year ending December 31, 2021 , respectively. The revenues excluded from the amounts above based on optional exemptions available under ASC 606, as explained below, represent a significant portion of our overall revenues and revenue from contracts with customers. Certain revenues such as flow-through operating costs charged to shippers are recognized at the amount for which we have the right to invoice our customers and are excluded from the amounts for revenues to be recognized in the future from unfulfilled performance obligations above. Variable consideration is excluded from the amounts above due to the uncertainty of the associated consideration, which is generally resolved when actual volumes and prices are determined. For example, we consider interruptible transportation service revenues to be variable revenues since volumes cannot be estimated. Additionally, the effect of escalation on certain tolls which are contractually escalated for inflation has not been reflected in the amounts above as it is not possible to reliably estimate future inflation rates. Revenues for periods extending beyond the current rate settlement term for regulated contracts where the tolls are periodically reset by the regulator are excluded from the amounts above since future tolls remain unknown. Finally, revenue from contracts with customers which have an original expected duration of one year or less are excluded from the amounts above. Recognition and Measurement of Revenues Liquids Pipelines Gas Transmission and Midstream Gas Distribution and Storage Renewable Power Generation Energy Services Consolidated Three months ended (millions of Canadian dollars) Revenues from products transferred at a point in time — — 15 — — 15 Revenues from products and services transferred over time 1 2,466 1,341 1,664 50 — 5,521 Total revenue from contracts with customers 2,466 1,341 1,679 50 — 5,536 Liquids Pipelines Gas Transmission and Midstream Gas Distribution and Storage Renewable Power Generation Energy Services Consolidated Three months ended (millions of Canadian dollars) Revenues from products transferred at a point in time — — 17 — — 17 Revenues from products and services transferred over time 1 2,241 1,306 2,142 50 — 5,739 Total revenue from contracts with customers 2,241 1,306 2,159 50 — 5,756

SEGMENTED INFORMATION

SEGMENTED INFORMATION	3 Months Ended
	Mar. 31, 2020
Segment Reporting [Abstract]
SEGMENTED INFORMATION	SEGMENTED INFORMATION Liquids Pipelines Gas Transmission and Midstream Gas Distribution and Storage Renewable Power Generation Energy Services Eliminations and Other Consolidated Three months ended (millions of Canadian dollars) Revenues 1,534 1,357 1,682 153 7,398 (111 ) 12,013 Commodity and gas distribution costs (7 ) — (872 ) — (7,243 ) 104 (8,018 ) Operating and administrative (865 ) (507 ) (249 ) (50 ) (28 ) 99 (1,600 ) Income/(loss) from equity investments 197 (75 ) 23 16 2 — 163 Impairment of equity investments — (1,736 ) — — — — (1,736 ) Other income/(expense) (9 ) (93 ) 20 1 (8 ) (1,058 ) (1,147 ) Earnings/(loss) before interest, income taxes, and depreciation and amortization 850 (1,054 ) 604 120 121 (966 ) (325 ) Depreciation and amortization (882 ) Interest expense (706 ) Income tax recovery 549 Loss (1,364 ) Capital expenditures 1 500 391 222 23 — 22 1,158 Liquids Pipelines Gas Transmission and Midstream Gas Distribution and Storage Renewable Power Generation Energy Services Eliminations and Other Consolidated Three months ended (millions of Canadian dollars) Revenues 2,658 1,318 2,191 152 6,673 (136 ) 12,856 Commodity and gas distribution costs (6 ) — (1,264 ) (1 ) (6,629 ) 128 (7,772 ) Operating and administrative (801 ) (513 ) (294 ) (42 ) (33 ) 58 (1,625 ) Income/(loss) from equity investments 197 197 11 14 (7 ) 1 413 Other income 24 18 18 1 2 197 260 Earnings before interest, income taxes, and depreciation and amortization 2,072 1,020 662 124 6 248 4,132 Depreciation and amortization (840 ) Interest expense (685 ) Income tax expense (584 ) Earnings 2,023 Capital expenditures 1 1,020 394 173 14 1 25 1,627 1 Includes allowance for equity funds used during construction.

EARNINGS PER COMMON SHARE AND D

EARNINGS PER COMMON SHARE AND DIVIDENDS PER SHARE	3 Months Ended
	Mar. 31, 2020
Earnings Per Share [Abstract]
EARNINGS PER COMMON SHARE AND DIVIDENDS PER SHARE	EARNINGS PER COMMON SHARE AND DIVIDENDS PER SHARE BASIC Earnings per common share is calculated by dividing earnings attributable to common shareholders by the weighted average number of common shares outstanding. The weighted average number of common shares outstanding has been reduced by our pro-rata weighted average interest in our own common shares of 6 million for both the three months ended March 31, 2020 and 2019 , resulting from our reciprocal investment in Noverco Inc. DILUTED The treasury stock method is used to determine the dilutive impact of stock options. This method assumes any proceeds from the exercise of stock options would be used to purchase common shares at the average market price during the period. Weighted average shares outstanding used to calculate basic and diluted earnings per share are as follows: Three months ended 2020 2019 (number of common shares in millions) Weighted average shares outstanding 2,019 2,016 Effect of dilutive options 2 3 Diluted weighted average shares outstanding 2,021 2,019 For the three months ended March 31, 2020 and 2019 , 16.7 million and 10.5 million , respectively, anti-dilutive stock options with a weighted average exercise price of $56.26 and $55.32 , respectively, were excluded from the diluted earnings per common share calculation. DIVIDENDS PER SHARE On May 5, 2020, our Board of Directors declared the following quarterly dividends. All dividends are payable on June 1, 2020, to shareholders of record on May 15, 2020. Dividend per share Common Shares 1 $0.81000 Preference Shares, Series A $0.34375 Preference Shares, Series B $0.21340 Preference Shares, Series C 2 $0.25458 Preference Shares, Series D $0.27875 Preference Shares, Series F $0.29306 Preference Shares, Series H $0.27350 Preference Shares, Series J US$0.30540 Preference Shares, Series L US$0.30993 Preference Shares, Series N $0.31788 Preference Shares, Series P $0.27369 Preference Shares, Series R $0.25456 Preference Shares, Series 1 US$0.37182 Preference Shares, Series 3 $0.23356 Preference Shares, Series 5 US$0.33596 Preference Shares, Series 7 $0.27806 Preference Shares, Series 9 $0.25606 Preference Shares, Series 11 3 $0.24613 Preference Shares, Series 13 $0.27500 Preference Shares, Series 15 $0.27500 Preference Shares, Series 17 $0.32188 Preference Shares, Series 19 $0.30625 1 The quarterly dividend per common share was increased 9.8% to $0.81 from $0.738, effective March 1, 2020. 2 The quarterly dividend per share paid on Series C was increased to $0.25458 from $0.25305 on March 1, 2020 due to reset on a quarterly basis following the date of issuance of the Series C Preference Shares. 3 The quarterly dividend per share paid on Series 11 was decreased to $0.24613 from $0.275 on March 1, 2020, due to the reset of the annual dividend on March 1, 2020, and every five years thereafter.

AQUISITIONS AND DISPOSITIONS

AQUISITIONS AND DISPOSITIONS	3 Months Ended
	Mar. 31, 2020
Discontinued Operations and Disposal Groups [Abstract]
AQUISITIONS AND DISPOSITIONS	ACQUISITIONS AND DISPOSITIONS ASSETS HELD FOR SALE Line 10 Crude Oil Pipeline In the first quarter of 2018, we satisfied the condition as set out in our agreements for the sale of our Line 10 crude oil pipeline (Line 10), which originates near Hamilton, Ontario and terminates at West Seneca, New York. Our subsidiaries, Enbridge Pipelines Inc. and EEP, own the Canadian and United States portions of Line 10, respectively, and the related assets are included in our Liquids Pipelines segment. Subject to certain regulatory approvals and customary closing conditions, the transaction is expected to close in 2020. Montana-Alberta Tie Line In the fourth quarter of 2019, we committed to a plan to sell the Montana-Alberta Tie Line transmission assets, a 345 kilometer transmission line from Great Falls, Montana to Lethbridge, Alberta. Its related assets are included in our Renewable Power Generation segment. The purchase and sale agreement was signed in January 2020. The transaction closed on May 1, 2020, please refer to Note 14. Subsequent Events . Ozark Gas Transmission In the first quarter of 2020, we agreed to sell our Ozark Gas Transmission and Ozark Gas Gathering assets (Ozark assets). The Ozark assets are composed of a 367 mile transmission system that extends from southeastern Oklahoma through Arkansas to southeastern Missouri, and a fee-based 330 mile gathering system that accesses Fayetteville Shale and Arkoma production. These assets are included in our Gas Transmission and Midstream segment. The transaction closed on April 1, 2020, please refer to Note 14. Subsequent Events . Upon the reclassification and subsequent remeasurement of the Ozark assets as held for sale, a loss of $19 million was included within Operating and administrative expenses on the Consolidated Statements of Earnings for the three months ended March 31, 2020. Summary of Assets Held for Sale The table below summarizes the presentation of net assets held for sale in our Consolidated Statements of Financial Position: March 31, 2020 December 31, 2019 (millions of Canadian dollars) Accounts receivable and other (current assets held for sale) 17 28 Deferred amounts and other assets (long-term assets held for sale) 1 330 269 Accounts payable and other (current liabilities held for sale) (8 ) — Net assets held for sale 339 297 1 Included within Deferred amounts and other assets at March 31, 2020 and December 31, 2019 is property, plant and equipment of $241 million and $181 million , respectively.

DEBT

DEBT	3 Months Ended
	Mar. 31, 2020
Debt Disclosure [Abstract]
DEBT	DEBT CREDIT FACILITIES The following table provides details of our committed credit facilities as at March 31, 2020 : Maturity Total Facilities Draws 1 Available (millions of Canadian dollars) Enbridge Inc. 2021-2024 10,959 6,250 4,709 Enbridge (U.S.) Inc. 2021-2024 7,829 2,162 5,667 Enbridge Pipelines Inc. 2021 2 3,000 2,155 845 Enbridge Gas Inc. 2021 2 2,000 835 1,165 Total committed credit facilities 23,788 11,402 12,386 1 Includes facility draws and commercial paper issuances that are back-stopped by credit facility. 2 Maturity date is inclusive of the one year term out option. On February 24, 2020, Enbridge Inc. entered into a two year, non-revolving credit facility for US$1 billion with a syndicate of lenders. On February 25, 2020, Enbridge Inc. entered into two , one year , non-revolving, bilateral credit facilities for a total of US$500 million . On March 31, 2020, Enbridge Inc. entered into a one year , revolving, syndicated credit facility for $1.7 billion . On April 9, 2020, Enbridge Inc. exercised an accordion provision and increased the facility to $3.0 billion . In addition to the committed credit facilities noted above, we maintain $806 million of uncommitted demand credit facilities, of which $523 million were unutilized as at March 31, 2020 . As at December 31, 2019 , we had $916 million of uncommitted credit facilities, of which $476 million were unutilized. Our credit facilities carry a weighted average standby fee of 0.1% per annum on the unused portion and draws bear interest at market rates. Certain credit facilities serve as a back-stop to the commercial paper programs and we have the option to extend such facilities, which are currently scheduled to mature from 2021 to 2024 . As at March 31, 2020 and December 31, 2019 , commercial paper and credit facility draws, net of short-term borrowings and non-revolving credit facilities that mature within one year, of $9,855 million and $8,974 million , respectively, were supported by the availability of long-term committed credit facilities and therefore have been classified as long-term debt. LONG-TERM DEBT ISSUANCES During the three months ended March 31, 2020 , we completed the following long-term debt issuances: Company Issue Date Principal Amount (millions of Canadian dollars, unless otherwise stated) Enbridge Inc. February 2020 Floating rate notes US$750 On April 1, 2020, Enbridge Gas Inc. (Enbridge Gas) issued $600 million of 2.90% 10-year medium-term notes and $600 million of 3.65% 30-year medium term notes payable semi-annually in arrears. The notes mature on April 1, 2030 and April 1, 2050, respectively. LONG-TERM DEBT REPAYMENTS During the three months ended March 31, 2020 , we completed the following long-term debt repayments : Company Repayment Date Principal Amount (millions of Canadian dollars, unless otherwise stated) Enbridge Inc. January 2020 Floating rate notes US$700 March 2020 4.53% medium-term notes $500 Spectra Energy Partners, LP January 2020 6.09% senior secured notes US$111 Westcoast Energy Inc. January 2020 9.90% debentures $100 SUBORDINATED TERM NOTES As at March 31, 2020 and December 31, 2019 , our fixed-to-floating subordinated term notes had a principal value of $6,955 million and $6,550 million , respectively. FAIR VALUE ADJUSTMENT As at March 31, 2020 , the net fair value adjustment for total debt assumed in the acquisition of Spectra Energy was $847 million . During the three months ended March 31, 2020 , the amortization of the fair value adjustment, recorded as a reduction to Interest expense in the Consolidated Statements of Earnings, was $15 million . DEBT COVENANTS Our credit facility agreements and term debt indentures include standard events of default and covenant provisions whereby accelerated repayment and/or termination of the agreements may result if we were to default on payment or violate certain covenants. As at March 31, 2020

COMPONENTS OF ACCUMULATED OTHER

COMPONENTS OF ACCUMULATED OTHER COMPREHENSIVE INCOME	3 Months Ended
	Mar. 31, 2020
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
COMPONENTS OF ACCUMULATED OTHER COMPREHENSIVE INCOME	COMPONENTS OF ACCUMULATED OTHER COMPREHENSIVE INCOME Changes in Accumulated Other Comprehensive Income (AOCI) attributable to our common shareholders for the three months ended March 31, 2020 and 2019 are as follows: Cash Flow Hedges Excluded Components of Fair Value Hedges Net Investment Hedges Cumulative Translation Adjustment Equity Investees Pension and OPEB Adjustment Total (millions of Canadian dollars) Balance as at January 1, 2020 (1,073 ) — (317 ) 1,396 67 (345 ) (272 ) Other comprehensive income/(loss) retained in AOCI (693 ) 3 (715 ) 5,459 (7 ) — 4,047 Other comprehensive (income)/loss reclassified to earnings Interest rate contracts 1 43 — — — — — 43 Foreign exchange contracts 2 1 — — — — — 1 Amortization of pension and OPEB actuarial loss and prior service costs 4 — — — — — 4 4 (649 ) 3 (715 ) 5,459 (7 ) 4 4,095 Tax impact Income tax on amounts retained in AOCI 182 — — — (3 ) — 179 Income tax on amounts reclassified to earnings (12 ) — — — — (1 ) (13 ) 170 — — — (3 ) (1 ) 166 Balance as at March 31, 2020 (1,552 ) 3 (1,032 ) 6,855 57 (342 ) 3,989 Cash Flow Hedges Net Investment Hedges Cumulative Translation Adjustment Equity Investees Pension and OPEB Adjustment Total (millions of Canadian dollars) Balance as at January 1, 2019 (770 ) (598 ) 4,323 34 (317 ) 2,672 Other comprehensive income/(loss) retained in AOCI (312 ) 109 (1,242 ) 8 — (1,437 ) Other comprehensive (income)/loss reclassified to earnings Interest rate contracts 1 32 — — — — 32 Foreign exchange contracts 2 2 — — — — 2 Other contracts 3 (9 ) — — — — (9 ) Amortization of pension and OPEB actuarial loss and prior service costs 4 — — — — 53 53 (287 ) 109 (1,242 ) 8 53 (1,359 ) Tax impact Income tax on amounts retained in AOCI 121 (15 ) — 4 — 110 Income tax on amounts reclassified to earnings (14 ) — — — (15 ) (29 ) 107 (15 ) — 4 (15 ) 81 Other — — — — 55 55 Balance as at March 31, 2019 (950 ) (504 ) 3,081 46 (224 ) 1,449 1 Reported within Interest expense in the Consolidated Statements of Earnings. 2 Reported within Transportation and other services revenues and Net foreign currency gain/(loss) in the Consolidated Statements of Earnings. 3 Reported within Operating and administrative expense in the Consolidated Statements of Earnings.

IMPAIRMENT OF EQUITY INVESTMENT

IMPAIRMENT OF EQUITY INVESTMENTS	3 Months Ended
	Mar. 31, 2020
Noncontrolling Interest [Abstract]
IMPAIRMENT OF EQUITY INVESTMENTS	IMPAIRMENT OF EQUITY INVESTMENTS For the three months ended March 31, 2020, we recorded a loss of $1,736 million resulting from an other than temporary impairment to the carrying value of our equity method investment in DCP Midstream, LLC (DCP Midstream). DCP Midstream holds a limited partner interest in and is the owner of the general partner of DCP Midstream, LP. The impairment in our equity investment is related to a decline in the market price of DCP Midstream, LP publicly-traded units as at March 31, 2020. In addition, we recorded a loss of $324 million from our equity pick up of the loss recorded by DCP Midstream in relation to DCP Midstream, LP's asset and goodwill impairment. This is recorded within Income from Equity Investments in the Consolidated Statement of Earnings. Our investment in DCP Midstream is part of the Gas Transmission and Midstream segment and our carrying value of the investment as at March 31, 2020 and December 31, 2019 was $341 million and $2,193 million

RISK MANAGEMENT AND FINANCIAL I

RISK MANAGEMENT AND FINANCIAL INSTRUMENTS	3 Months Ended
	Mar. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS	RISK MANAGEMENT AND FINANCIAL INSTRUMENTS MARKET RISK Our earnings, cash flows and Other Comprehensive Income (OCI) are subject to movements in foreign exchange rates, interest rates, commodity prices and our share price (collectively, market risks). Formal risk management policies, processes and systems have been designed to mitigate these risks. The following summarizes the types of market risks to which we are exposed and the risk management instruments used to mitigate them. We use a combination of qualifying and non-qualifying derivative instruments to manage the risks noted below. Foreign Exchange Risk We generate certain revenues, incur expenses, and hold a number of investments and subsidiaries that are denominated in currencies other than Canadian dollars. As a result, our earnings, cash flows and OCI are exposed to fluctuations resulting from foreign exchange rate variability. We employ financial derivative instruments to hedge foreign currency denominated earnings exposure. A combination of qualifying cash flow, fair value and non-qualifying derivative instruments is used to hedge anticipated foreign currency denominated revenues and expenses, and to manage variability in cash flows. We hedge certain net investments in United States dollar denominated investments and subsidiaries using foreign currency derivatives and United States dollar denominated debt. Interest Rate Risk Our earnings and cash flows are exposed to short-term interest rate variability due to the regular repricing of our variable rate debt, primarily commercial paper. We monitor our debt portfolio mix of fixed and variable rate debt instruments to manage a consolidated portfolio of floating rate debt within the Board of Directors approved policy limit of a maximum of 30% of floating rate debt as a percentage of total debt outstanding. We primarily use qualifying derivative instruments to manage interest rate risk. Pay fixed-receive floating interest rate swaps may be used to hedge against the effect of future interest rate movements. We have implemented a program to significantly mitigate the impact of short-term interest rate volatility on interest expense via execution of floating to fixed interest rate swaps with an average swap rate of 2.9% . We are exposed to changes in the fair value of fixed rate debt that arise as a result of the changes in market interest rates. Pay floating-receive fixed interest rate swaps are used, when applicable, to hedge against future changes to the fair value of fixed rate debt which mitigates the impact of fluctuations in the fair value of fixed rate debt via execution of fixed to floating interest rate swaps. As at March 31, 2020 , we do not have any pay floating-receive fixed interest rate swaps outstanding. Our earnings and cash flows are also exposed to variability in longer term interest rates ahead of anticipated fixed rate term debt issuances. Forward starting interest rate swaps are used to hedge against the effect of future interest rate movements. We have established a program within some of our subsidiaries to mitigate our exposure to long-term interest rate variability on select forecast term debt issuances via execution of floating to fixed interest rate swaps with an average swap rate of 3.1% . Commodity Price Risk Our earnings and cash flows are exposed to changes in commodity prices as a result of our ownership interests in certain assets and investments, as well as through the activities of our energy services subsidiaries. These commodities include natural gas, crude oil, power and NGL. We employ financial and physical derivative instruments to fix a portion of the variable price exposures that arise from physical transactions involving these commodities. We use primarily non-qualifying derivative instruments to manage commodity price risk. Equity Price Risk Equity price risk is the risk of earnings fluctuations due to changes in our share price. We have exposure to our own common share price through the issuance of various forms of stock-based compensation, which affect earnings through revaluation of the outstanding units every period. We use equity derivatives to manage the earnings volatility derived from one form of stock-based compensation, restricted share units. We use a combination of qualifying and non-qualifying derivative instruments to manage equity price risk. TOTAL DERIVATIVE INSTRUMENTS The following table summarizes the Consolidated Statements of Financial Position location and carrying value of our derivative instruments. We generally have a policy of entering into individual International Swaps and Derivatives Association, Inc. agreements, or other similar derivative agreements, with the majority of our financial derivative counterparties. These agreements provide for the net settlement of derivative instruments outstanding with specific counterparties in the event of bankruptcy or other significant credit events, and reduce our credit risk exposure on financial derivative asset positions outstanding with the counterparties in those circumstances. The following table summarizes the maximum potential settlement amounts in the event of these specific circumstances. All amounts are presented gross in the Consolidated Statements of Financial Position. March 31, 2020 Derivative Instruments Used as Cash Flow Hedges Derivative Instruments Used as Net Investment Hedges Derivative Instruments Used as Fair Value Hedges Non- Qualifying Derivative Instruments Total Gross Derivative Instruments as Presented Amounts Available for Offset Total Net Derivative Instruments (millions of Canadian dollars) Accounts receivable and other Foreign exchange contracts — — 49 56 105 (50 ) 55 Commodity contracts 2 — — 961 963 (289 ) 674 2 — 49 1,017 1,068 1 (339 ) 729 Deferred amounts and other assets Foreign exchange contracts 30 — 169 174 373 (128 ) 245 Commodity contracts 3 — — 65 68 (22 ) 46 33 — 169 239 441 (150 ) 291 Accounts payable and other Foreign exchange contracts (5 ) (20 ) — (899 ) (924 ) 50 (874 ) Interest rate contracts (813 ) — — (18 ) (831 ) — (831 ) Commodity contracts — — — (506 ) (506 ) 289 (217 ) Other Contracts — — — (1 ) (1 ) — (1 ) (818 ) (20 ) — (1,424 ) (2,262 ) 2 339 (1,923 ) Other long-term liabilities Foreign exchange contracts — — — (2,428 ) (2,428 ) 128 (2,300 ) Interest rate contracts (395 ) — — — (395 ) — (395 ) Commodity contracts — — — (81 ) (81 ) 22 (59 ) Other contracts (4 ) — — (3 ) (7 ) — (7 ) (399 ) — — (2,512 ) (2,911 ) 150 (2,761 ) Total net derivative assets/(liabilities) Foreign exchange contracts 25 (20 ) 218 (3,097 ) (2,874 ) — (2,874 ) Interest rate contracts (1,208 ) — — (18 ) (1,226 ) — (1,226 ) Commodity contracts 5 — — 439 444 — 444 Other contracts (4 ) — — (4 ) (8 ) — (8 ) (1,182 ) (20 ) 218 (2,680 ) (3,664 ) — (3,664 ) 1 As at March 31, 2020, $1,067 million was reported within Accounts receivable and other and $1 million within Accounts receivable from affiliates on the Consolidated Statements of Financial Position. 2 As at March 31, 2020, $2,246 million was reported within Accounts payable and other and $16 million within Accounts payable to affiliates on the Consolidated Statements of Financial Position. December 31, 2019 Derivative Instruments Used as Cash Flow Hedges Derivative Instruments Used as Net Investment Hedges Non- Qualifying Derivative Instruments Total Gross Derivative Instruments as Presented Amounts Available for Offset Total Net Derivative Instruments (millions of Canadian dollars) Accounts receivable and other Foreign exchange contracts — — 161 161 (78 ) 83 Commodity contracts — — 163 163 (47 ) 116 Other contracts 1 — 3 4 — 4 1 — 327 328 1 (125 ) 203 Deferred amounts and other assets Foreign exchange contracts 10 — 71 81 (42 ) 39 Commodity contracts — — 17 17 (2 ) 15 Other contracts 2 — 1 3 — 3 12 — 89 101 (44 ) 57 Accounts payable and other Foreign exchange contracts (5 ) (13 ) (392 ) (410 ) 78 (332 ) Interest rate contracts (353 ) — — (353 ) — (353 ) Commodity contracts — — (173 ) (173 ) 47 (126 ) (358 ) (13 ) (565 ) (936 ) 2 125 (811 ) Other long-term liabilities Foreign exchange contracts — — (934 ) (934 ) 42 (892 ) Interest rate contracts (181 ) — — (181 ) — (181 ) Commodity contracts (5 ) — (60 ) (65 ) 2 (63 ) (186 ) — (994 ) (1,180 ) 44 (1,136 ) Total net derivative assets/(liabilities) Foreign exchange contracts 5 (13 ) (1,094 ) (1,102 ) — (1,102 ) Interest rate contracts (534 ) — — (534 ) — (534 ) Commodity contracts (5 ) — (53 ) (58 ) — (58 ) Other contracts 3 — 4 7 — 7 (531 ) (13 ) (1,143 ) (1,687 ) — (1,687 ) 1 As at December 31, 2019, $327 million was reported within Accounts receivable and other and $1 million within Accounts receivable from affiliates on the Consolidated Statements of Financial Position. 2 As at December 31, 2019, $920 million was reported within Accounts payable and other and $16 million within Accounts payable to affiliates on the Consolidated Statements of Financial Position. The following table summarizes the maturity and notional principal or quantity outstanding related to our derivative instruments. March 31, 2020 2020 2021 2022 2023 2024 Thereafter Total Foreign exchange contracts - United States dollar forwards - purchase (millions of United States dollars) 823 500 1,750 — — — 3,073 Foreign exchange contracts - United States dollar forwards - sell (millions of United States dollars) 4,416 5,631 5,703 3,784 1,856 — 21,390 Foreign exchange contracts - British pound (GBP) forwards - sell (millions of GBP) 89 27 28 29 30 90 293 Foreign exchange contracts - Euro forwards - sell (millions of Euro) 23 94 94 92 91 515 909 Foreign exchange contracts - Japanese yen forwards - purchase (millions of yen) — — 72,500 — — — 72,500 Interest rate contracts - short-term pay fixed rate (millions of Canadian dollars) 4,618 4,284 422 50 36 121 9,531 Interest rate contracts - long-term debt pay fixed rate (millions of Canadian dollars) 3,544 1,619 — — — — 5,163 Equity contracts (millions of Canadian dollars) 16 34 — — — — 50 Commodity contracts - natural gas (billions of cubic feet) (38 ) 57 45 22 10 11 107 Commodity contracts - crude oil (millions of barrels) 5 4 1 — — — 10 Commodity contracts - power (megawatt per hour) (MW/H) 79 (3 ) (43 ) (43 ) (43 ) (43 ) 1 (16 ) 2 1 As at March 31, 2020 , thereafter includes an average net purchase/(sell) of power of (43) MW/H for 2025. 2 Total is an average net purchase/(sell) of power. Fair Value Derivatives For foreign exchange derivative instruments that are designated and qualify as fair value hedges, the gain or loss on the derivative as well as the offsetting loss or gain on the hedged item attributable to the hedged risk is included in Net foreign currency gain/(loss) in the Consolidated Statements of Earnings. Any excluded components are included in the Statements of Comprehensive Income. Three months ended 2020 2019 (millions of Canadian dollars) Unrealized gain on derivative 218 — Unrealized loss on hedged item (203 ) — Realized loss on derivative (12 ) — The Effect of Derivative Instruments on the Statements of Earnings and Comprehensive Income The following table presents the effect of cash flow hedges, fair value hedges and net investment hedges on our consolidated earnings and consolidated comprehensive income, before the effect of income taxes: Three months ended 2020 2019 (millions of Canadian dollars) Amount of unrealized gain/(loss) recognized in OCI Cash flow hedges Foreign exchange contracts 19 (10 ) Interest rate contracts (715 ) (296 ) Commodity contracts 9 (3 ) Other contracts (7 ) 12 Fair value hedges Foreign exchange contracts 3 — Net investment hedges Foreign exchange contracts (7 ) 1 (698 ) (296 ) Amount of (gain)/loss reclassified from AOCI to earnings Foreign exchange contracts 1 1 2 Interest rate contracts 2 43 32 Other contracts 3 — (9 ) 44 25 1 Reported within Transportation and other services revenues and Net foreign currency gain/(loss) in the Consolidated Statements of Earnings. 2 Reported within Interest expense in the Consolidated Statements of Earnings. 3 Reported within Operating and administrative expense in the Consolidated Statements of Earnings. We estimate that a loss of $164 million of AOCI related to unrealized cash flow hedges will be reclassified to earnings in the next 12 months. Actual amounts reclassified to earnings depend on the foreign exchange rates, interest rates and commodity prices in effect when derivative contracts that are currently outstanding mature. For all forecasted transactions, the maximum term over which we are hedging exposures to the variability of cash flows is 21 months as at March 31, 2020 . Non-Qualifying Derivatives The following table presents the unrealized gains and losses associated with changes in the fair value of our non-qualifying derivatives: Three months ended 2020 2019 (millions of Canadian dollars) Foreign exchange contracts 1 (2,003 ) 616 Interest rate contracts 2 (18 ) 178 Commodity contracts 3 473 (261 ) Other contracts 4 (8 ) 5 Total unrealized derivative fair value gain/(loss), net (1,556 ) 538 1 For the respective three months ended periods, reported within Transportation and other services revenues ( 2020 - $1,061 million loss ; 2019 - $352 million gain ) and Net foreign currency gain/(loss) ( 2020 - $942 million loss ; 2019 - $264 million gain ) in the Consolidated Statements of Earnings. 2 Reported as an (increase)/decrease within Interest expense in the Consolidated Statements of Earnings. 3 For the respective three months ended periods, reported within Transportation and other services revenues ( 2020 - $34 million gain ; 2019 - $26 million loss ), Commodity sales ( 2020 - $1,493 million gain ; 2019 - $642 million loss ), Commodity costs ( 2020 - $1,045 million loss ; 2019 - $398 million gain ) and Operating and administrative expense ( 2020 - $9 million loss ; 2019 - $9 million gain ) in the Consolidated Statements of Earnings. 4 Reported within Operating and administrative expense in the Consolidated Statements of Earnings. LIQUIDITY RISK Liquidity risk is the risk that we will not be able to meet our financial obligations, including commitments and guarantees, as they become due. In order to mitigate this risk, we forecast cash requirements over a 12 -month rolling time period to determine whether sufficient funds will be available and maintain substantial capacity under our committed bank lines of credit to address any contingencies. Our primary sources of liquidity and capital resources are funds generated from operations, the issuance of commercial paper and draws under committed credit facilities and long-term debt, which includes debentures and medium-term notes. We also maintain current shelf prospectuses with securities regulators which enables ready access to either the Canadian or United States public capital markets, subject to market conditions. In addition, we maintain sufficient liquidity through committed credit facilities with a diversified group of banks and institutions which, if necessary, enables us to fund all anticipated requirements for approximately one year without accessing the capital markets. We are in compliance with all the terms and conditions of our committed credit facility agreements and term debt indentures as at March 31, 2020 . As a result, all credit facilities are available to us and the banks are obligated to fund and have been funding us under the terms of the facilities. CREDIT RISK Entering into derivative instruments may result in exposure to credit risk from the possibility that a counterparty will default on its contractual obligations. In order to mitigate this risk, we enter into risk management transactions primarily with institutions that possess strong investment grade credit ratings. Credit risk relating to derivative counterparties is mitigated through maintenance and monitoring of credit exposure limits and contractual requirements, netting arrangements, and ongoing monitoring of counterparty credit exposure using external credit rating services and other analytical tools. We have credit concentrations and credit exposure, with respect to derivative instruments, in the following counterparty segments: March 31, December 31, (millions of Canadian dollars) Canadian financial institutions 128 146 United States financial institutions 310 40 European financial institutions 165 3 Asian financial institutions 76 92 Other 1 798 113 1,477 394 1 Other is comprised of commodity clearing house and physical natural gas and crude oil counterparties. As at March 31, 2020 , we provided letters of credit totaling nil in lieu of providing cash collateral to our counterparties pursuant to the terms of the relevant International Swaps and Derivatives Association agreements. We held no cash collateral on derivative asset exposures as at March 31, 2020 and December 31, 2019 . Gross derivative balances have been presented without the effects of collateral posted. Derivative assets are adjusted for non-performance risk of our counterparties using their credit default swap spread rates, and are reflected at fair value. For derivative liabilities, our non-performance risk is considered in the valuation. Credit risk also arises from trade and other long-term receivables, and is mitigated through credit exposure limits and contractual requirements, assessment of credit ratings and netting arrangements. Within Enbridge Gas, credit risk is mitigated by the utilities' large and diversified customer base and the ability to recover an estimate for doubtful accounts through the ratemaking process. We actively monitor the financial strength of large industrial customers, and in select cases, have obtained additional security to minimize the risk of default on receivables. Generally, we classify and provide for receivables older than 30 days as past due. The maximum exposure to credit risk related to non-derivative financial assets is their carrying value. FAIR VALUE MEASUREMENTS Our financial assets and liabilities measured at fair value on a recurring basis include derivative instruments. We also disclose the fair value of other financial instruments not measured at fair value. The fair value of financial instruments reflects our best estimates of market value based on generally accepted valuation techniques or models and is supported by observable market prices and rates. When such values are not available, we use discounted cash flow analysis from applicable yield curves based on observable market inputs to estimate fair value. FAIR VALUE OF FINANCIAL INSTRUMENTS We categorize our derivative instruments measured at fair value into one of three different levels depending on the observability of the inputs employed in the measurement. Level 1 Level 1 includes derivatives measured at fair value based on unadjusted quoted prices for identical assets and liabilities in active markets that are accessible at the measurement date. An active market for a derivative is considered to be a market where transactions occur with sufficient frequency and volume to provide pricing information on an ongoing basis. Our Level 1 instruments consist primarily of exchange-traded derivatives used to mitigate the risk of crude oil price fluctuations. Level 2 Level 2 includes derivative valuations determined using directly or indirectly observable inputs other than quoted prices included within Level 1. Derivatives in this category are valued using models or other industry standard valuation techniques derived from observable market data. Such valuation techniques include inputs such as quoted forward prices, time value, volatility factors and broker quotes that can be observed or corroborated in the market for the entire duration of the derivative. Derivatives valued using Level 2 inputs include non-exchange traded derivatives such as over-the-counter foreign exchange forward and cross currency swap contracts, interest rate swaps, physical forward commodity contracts, as well as commodity swaps and options for which observable inputs can be obtained. We have also categorized the fair value of our held to maturity preferred share investment and long-term debt as Level 2. The fair value of our held to maturity preferred share investment is primarily based on the yield of certain Government of Canada bonds. The fair value of our long-term debt is based on quoted market prices for instruments of similar yield, credit risk and tenor. Level 3 Level 3 includes derivative valuations based on inputs which are less observable, unavailable or where the observable data does not support a significant portion of the derivatives’ fair value. Generally, Level 3 derivatives are longer dated transactions, occur in less active markets, occur at locations where pricing information is not available or have no binding broker quote to support Level 2 classification. We have developed methodologies, benchmarked against industry standards, to determine fair value for these derivatives based on extrapolation of observable future prices and rates. Derivatives valued using Level 3 inputs primarily include long-dated derivative power, crude, NGL and natural gas contracts, basis swaps, commodity swaps and energy swaps. We do not have any other financial instruments categorized in Level 3. We use the most observable inputs available to estimate the fair value of our derivatives. When possible, we estimate the fair value of our derivatives based on quoted market prices. If quoted market prices are not available, we use estimates from third party brokers. For non-exchange traded derivatives classified in Levels 2 and 3, we use standard valuation techniques to calculate the estimated fair value. These methods include discounted cash flows for forwards and swaps. Depending on the type of derivative and nature of the underlying risk, we use observable market prices (interest, foreign exchange, commodity and share price) as primary inputs to these valuation techniques. Finally, we consider our own credit default swap spread as well as the credit default swap spreads associated with our counterparties in our estimation of fair value. We have categorized our derivative assets and liabilities measured at fair value as follows: March 31, 2020 Level 1 Level 2 Level 3 Total Gross Derivative Instruments (millions of Canadian dollars) Financial assets Current derivative assets Foreign exchange contracts — 105 — 105 Commodity contracts 90 73 800 963 90 178 800 1,068 Long-term derivative assets Foreign exchange contracts — 373 — 373 Commodity contracts 33 19 16 68 33 392 16 441 Financial liabilities Current derivative liabilities Foreign exchange contracts — (924 ) — (924 ) Interest rate contracts — (831 ) — (831 ) Commodity contracts (58 ) (20 ) (428 ) (506 ) Other contracts — (1 ) — (1 ) (58 ) (1,776 ) (428 ) (2,262 ) Long-term derivative liabilities Foreign exchange contracts — (2,428 ) — (2,428 ) Interest rate contracts — (395 ) — (395 ) Commodity contracts (13 ) (8 ) (60 ) (81 ) Other contracts — (7 ) — (7 ) (13 ) (2,838 ) (60 ) (2,911 ) Total net financial assets/(liabilities) Foreign exchange contracts — (2,874 ) — (2,874 ) Interest rate contracts — (1,226 ) — (1,226 ) Commodity contracts 52 64 328 444 Other contracts — (8 ) — (8 ) 52 (4,044 ) 328 (3,664 ) December 31, 2019 Level 1 Level 2 Level 3 Total Gross Derivative Instruments (millions of Canadian dollars) Financial assets Current derivative assets Foreign exchange contracts — 161 — 161 Commodity contracts — 33 130 163 Other contracts — 4 — 4 — 198 130 328 Long-term derivative assets Foreign exchange contracts — 81 — 81 Commodity contracts — 12 5 17 Other contracts — 3 — 3 — 96 5 101 Financial liabilities Current derivative liabilities Foreign exchange contracts — (410 ) — (410 ) Interest rate contracts — (353 ) — (353 ) Commodity contracts (5 ) (23 ) (145 ) (173 ) (5 ) (786 ) (145 ) (936 ) Long-term derivative liabilities Foreign exchange contracts — (934 ) — (934 ) Interest rate contracts — (181 ) — (181 ) Commodity contracts — (6 ) (59 ) (65 ) — (1,121 ) (59 ) (1,180 ) Total net financial assets/(liabilities) Foreign exchange contracts — (1,102 ) — (1,102 ) Interest rate contracts — (534 ) — (534 ) Commodity contracts (5 ) 16 (69 ) (58 ) Other contracts — 7 — 7 (5 ) (1,613 ) (69 ) (1,687 ) The significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments were as follows: March 31, 2020 Fair Value Unobservable Input Minimum Price Maximum Price Weighted Average Price Unit of Measurement (fair value in millions of Canadian dollars) Commodity contracts - financial 1 Natural gas (4 ) Forward gas price 1.81 5.15 3.18 $/mmbtu 2 Crude 11 Forward crude price 4.46 96.53 46.61 $/barrel Power (57 ) Forward power price 21.00 70.42 53.00 $/MW/H Commodity contracts - physical 1 Natural gas 36 Forward gas price 1.51 7.53 2.56 $/mmbtu 2 Crude 336 Forward crude price 7.00 76.89 28.24 $/barrel NGL 6 Forward NGL price 0.11 1.20 0.42 $/gallon 328 1 Financial and physical forward commodity contracts are valued using a market approach valuation technique. 2 One million British thermal units (mmbtu). If adjusted, the significant unobservable inputs disclosed in the table above would have a direct impact on the fair value of our Level 3 derivative instruments. The significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments include forward commodity prices. Changes in forward commodity prices could result in significantly different fair values for our Level 3 derivatives. Changes in net fair value of derivative assets and liabilities classified as Level 3 in the fair value hierarchy were as follows: Three months ended 2020 2019 (millions of Canadian dollars) Level 3 net derivative liability at beginning of period (69 ) (11 ) Total gain/(loss) Included in earnings 1 349 (52 ) Included in OCI 9 (3 ) Settlements 39 (156 ) Level 3 net derivative liability at end of period 328 (222 ) 1 Reported within Transportation and other services revenues, Commodity costs and Operating and administrative expense in the Consolidated Statements of Earnings. There were no transfers into or out of Level 3 as at March 31, 2020 or December 31, 2019 . FAIR VALUE OF OTHER FINANCIAL INSTRUMENTS Our other long-term investments in other entities with no actively quoted prices are classified as Fair Value Measurement Alternative (FVMA) investments and are recorded at cost less impairment. The carrying value of FVMA other long-term investments totaled $56 million and $99 million as at March 31, 2020 and December 31, 2019 , respectively. We have Restricted long-term investments held in trust totaling $443 million and $434 million as at March 31, 2020 and December 31, 2019 , respectively, which are recognized at fair value. We have a held to maturity preferred share investment carried at its amortized cost of $566 million and $580 million as at March 31, 2020 and December 31, 2019 , respectively. These preferred shares are entitled to a cumulative preferred dividend based on the yield of 10 -year Government of Canada bonds plus a margin of 4.38% . The fair value of this preferred share investment is $566 million and $580 million as at March 31, 2020 and December 31, 2019 , respectively. As at March 31, 2020 and December 31, 2019 , our long-term debt had a carrying value of $68.1 billion and $64.4 billion , respectively, before debt issuance costs and a fair value of $65.9 billion and $70.5 billion , respectively. We also have non-current notes receivable carried at book value and recorded in Deferred amounts and other assets in the Consolidated Statements of Financial Position. As at March 31, 2020 and December 31, 2019 , the non-current notes receivable had a carrying value of $1,130 million and $1,026 million , respectively, which also approximates their fair value. The fair value of financial assets and liabilities other than derivative instruments, long-term investments, restricted long-term investments, long-term debt and non-current notes receivable described above approximate their carrying value due to the short period to maturity. NET INVESTMENT HEDGES We have designated a portion of our United States dollar denominated debt, as well as a portfolio of foreign exchange forward contracts, as a hedge of our net investment in United States dollar denominated investments and subsidiaries. During the three months ended March 31, 2020 and 2019 , we recognized an unrealized foreign exchange loss of $708 million and a gain of $108 million , respectively, on the translation of United States dollar denominated debt and unrealized loss of $7 million and a gain of $1 million , respectively, on the change in fair value of our outstanding foreign exchange forward contracts in OCI. During the three months ended March 31, 2020 and 2019 , we recognized realized losses of nil , in OCI associated with the settlement of foreign exchange forward contracts and recognized realized losses of nil

INCOME TAXES

INCOME TAXES	3 Months Ended
	Mar. 31, 2020
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES The effective income tax rates for the three months ended March 31, 2020 and 2019 were 28.7% and 22.4%

PENSION AND OTHER POSTRETIREMEN

PENSION AND OTHER POSTRETIREMENT BENEFITS	3 Months Ended
	Mar. 31, 2020
Retirement Benefits [Abstract]
PENSION AND OTHER POSTRETIREMENT BENEFITS	PENSION AND OTHER POSTRETIREMENT BENEFITS Three months ended 2020 2019 (millions of Canadian dollars) Service cost 42 51 Interest cost 33 51 Expected return on plan assets (67 ) (84 ) Amortization of actuarial loss and prior service costs 9 7 Net periodic benefit costs 17 25

CONTINGENCIES

CONTINGENCIES	3 Months Ended
	Mar. 31, 2020
Loss Contingency [Abstract]
CONTINGENCIES	CONTINGENCIES We and our subsidiaries are involved in various legal and regulatory actions and proceedings which arise in the normal course of business, including interventions in regulatory proceedings and challenges to regulatory approvals and permits. While the final outcome of such actions and proceedings cannot be predicted with certainty, management believes that the resolution of such actions and proceedings will not have a material impact on our interim consolidated financial position or results of operations. TAX MATTERS We and our subsidiaries maintain tax liabilities related to uncertain tax positions. While fully supportable in our view, these tax positions, if challenged by tax authorities, may not be fully sustained on review.

SUBSEQUENT EVENTS

SUBSEQUENT EVENTS	3 Months Ended
	Mar. 31, 2020
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTS On April 1, 2020, we closed the sale of our Ozark assets for proceeds of approximately $60 million (US $43 million ), subject to customary closing adjustments. Refer to Note 6. Acquisitions and Dispositions for further discussion of the transaction. On May 1, 2020, we closed the sale of our Montana-Alberta Tie Line assets for proceeds of approximately $180 million , subject to customary closing adjustments. Refer to Note 6. Acquisitions and Dispositions for further discussion of the transaction. On May 4, 2020, a rupture occurred on Line 10, a 30-inch natural gas pipeline that makes up part of the Texas Eastern natural gas pipeline system in Fleming County, Kentucky. There have been no reported injuries or damaged structures as a result of the rupture. Texas Eastern crews are on site and have secured the area. The impacted section of pipe was shut-in following the incident and remains isolated. The National Transportation Safety Board has assumed control of the site and is working with the Pipeline and Hazardous Materials Safety Administration and Enbridge to investigate. The spread of the COVID-19 pandemic has caused significant volatility in Canada, the United States and international markets. We continue to monitor the impact of the COVID-19 pandemic, reduced crude oil demand and reduced commodity prices on our results of operations. These demand effects coincided with decisions by various global producers, including the Organization of Petroleum Exporting Countries and other oil producing nations (OPEC+) to increase global production levels, putting severe downward pressure on prices. As a result, prices of crude oil, natural gas, natural gas liquids and other commodities whose prices are highly correlated to crude oil have decreased substantially. Given the many outstanding questions as to the length and depth of the COVID-19 pandemic and the current low commodity price environment, the impact on us is uncertain; however, it is possible that they may have an adverse impact on our business and results of operations in the future.

CHANGES IN ACCOUNTING POLICIES

CHANGES IN ACCOUNTING POLICIES (Policies)	3 Months Ended
	Mar. 31, 2020
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
ADOPTION OF NEW ACCOUNTING STANDARDS and FUTURE ACCOUNTING POLICY CHANGES	ADOPTION OF NEW ACCOUNTING STANDARDS Clarifying Interaction between Collaborative Arrangements and Revenue from Contracts with Customers Effective January 1, 2020, we adopted Accounting Standards Update (ASU) 2018-18 on a retrospective basis. The new standard was issued in November 2018 to provide clarity on when transactions between entities in a collaborative arrangement should be accounted for under the new revenue standard, Accounting Standards Codification (ASC) 606. In determining whether transactions in collaborative arrangements should be accounted for under the revenue standard, the update specifies that entities shall apply unit of account guidance to identify distinct goods or services and whether such goods and services are separately identifiable from other promises in the contract. ASU 2018-18 also precludes entities from presenting transactions with a collaborative partner which are not in scope of the new revenue standard together with revenue from contracts with customers. The adoption of this ASU did not have a material impact on our consolidated financial statements. Disclosure Effectiveness Effective January 1, 2020, we adopted ASU 2018-13 on both a retrospective and prospective basis depending on the change. The new standard was issued to improve the disclosure requirements for fair value measurements by eliminating and modifying some disclosures, while also adding new disclosures. The adoption of this ASU did not have a material impact on our consolidated financial statements. Accounting for Credit Losses Effective January 1, 2020, we adopted ASU 2016-13 on a modified retrospective basis. The new standard was issued in June 2016 with the intent of providing financial statement users with more useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. The previous accounting treatment used the incurred loss methodology for recognizing credit losses that delayed the recognition until it was probable a loss had been incurred. The accounting update adds a new impairment model, known as the current expected credit loss model, which is based on expected losses rather than incurred losses. Under the new guidance, an entity recognizes as an allowance its estimate of expected credit losses, which the Financial Accounting Standards Board believes results in more timely recognition of such losses. Further, ASU 2018-19 was issued in November 2018 to clarify that operating lease receivables should be accounted for under the new leases standard, ASC 842, and are not within the scope of ASC 326, Financial Instruments - Credit Losses. For accounts receivable, a loss allowance matrix is utilized to measure lifetime expected credit losses. The matrix contemplates historical credit losses by age of receivables, adjusted for any forward-looking information and management expectations. Other loan receivables and off-balance sheet commitments in scope of the new standard utilize a discounted cash flow methodology which calculates the current expected credit losses based on historical default probability rates associated with the credit rating of the counterparty and the related term of the loan or commitment, adjusted for forward-looking information and management expectations. On January 1, 2020 we recorded $66 million of additional Deficit on our Statements of Financial Position in connection with the adoption of ASU 2016-13. The adoption of this ASU did not have a material impact on the Consolidated Statements of Earnings, Comprehensive Income or Cash Flows during the period. FUTURE ACCOUNTING POLICY CHANGES Reference Rate Reform ASU 2020-04 was issued in March 2020 to provide temporary optional guidance in accounting for reference rate reform. The new guidance provides optional expedients and exceptions for applying generally accepted accounting principles when accounting for contract modifications, hedging relationships and other transactions impacted by rate reform, subject to meeting certain criteria. ASU 2020-04 is effective as of March 12, 2020 through December 31, 2022. We are currently assessing the impact of the new standard and the rate reform on our consolidated financial statements. Clarifying Interaction between Equity Securities, Equity Method Investments and Derivatives ASU 2020-01 was issued in January 2020 and clarifies that observable transactions should be considered for the purpose of applying the measurement alternative in accordance with ASC 321 immediately before the application or upon discontinuance of the equity method of accounting. Furthermore, the ASU clarifies that forward contracts or purchased options on equity securities are not out of scope of ASC 815 guidance only because, upon the contracts’ exercise, the equity securities could be accounted for under the equity method of accounting or fair value option. ASU 2020-01 is effective January 1, 2021 with early adoption permitted and is applied prospectively. We are currently assessing the impact of the new standard on our consolidated financial statements. Accounting for Income Taxes ASU 2019-12 was issued in December 2019 with the intent of simplifying the accounting for income taxes. The accounting update removes certain exceptions to the general principles in ASC 740 as well as provides simplification by clarifying and amending existing guidance. ASU 2019-12 is effective January 1, 2021 and entities are permitted to adopt the standard early. We are currently assessing the impact of the new standard on our consolidated financial statements. Disclosure Effectiveness ASU 2018-14 was issued in August 2018 to improve disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. The amendment modifies the current guidance by adding and removing several disclosure requirements while also clarifying the guidance on current disclosure requirements. ASU 2018-14 is effective January 1, 2021 and entities are permitted to adopt the standard early. The adoption of ASU 2018-14 is not expected to have a material impact on our consolidated financial statements.

REVENUES (Tables)

REVENUES (Tables)	3 Months Ended
	Mar. 31, 2020
Revenue from Contract with Customer [Abstract]
Disaggregation of revenue	Recognition and Measurement of Revenues Liquids Pipelines Gas Transmission and Midstream Gas Distribution and Storage Renewable Power Generation Energy Services Consolidated Three months ended (millions of Canadian dollars) Revenues from products transferred at a point in time — — 15 — — 15 Revenues from products and services transferred over time 1 2,466 1,341 1,664 50 — 5,521 Total revenue from contracts with customers 2,466 1,341 1,679 50 — 5,536 Liquids Pipelines Gas Transmission and Midstream Gas Distribution and Storage Renewable Power Generation Energy Services Consolidated Three months ended (millions of Canadian dollars) Revenues from products transferred at a point in time — — 17 — — 17 Revenues from products and services transferred over time 1 2,241 1,306 2,142 50 — 5,739 Total revenue from contracts with customers 2,241 1,306 2,159 50 — 5,756 1 Revenues from crude oil and natural gas pipeline transportation, storage, natural gas gathering, compression and treating, natural gas distribution, natural gas storage services and electricity sales. Major Products and Services Liquids Pipelines Gas Transmission and Midstream Gas Distribution and Storage Renewable Power Generation Energy Services Eliminations and Other Consolidated Three months ended (millions of Canadian dollars) Transportation revenues 2,440 1,255 215 — — — 3,910 Storage and other revenues 26 79 47 — — — 152 Gas gathering and processing revenues — 7 — — — — 7 Gas distribution revenue — — 1,417 — — — 1,417 Electricity and transmission revenues — — — 50 — — 50 Total revenue from contracts with customers 2,466 1,341 1,679 50 — — 5,536 Commodity sales — — — — 7,389 — 7,389 Other revenues 1,2 (1,017 ) 16 (1 ) 103 (7 ) (6 ) (912 ) Intersegment revenues 85 — 4 — 16 (105 ) — Total revenues 1,534 1,357 1,682 153 7,398 (111 ) 12,013 Liquids Pipelines Gas Transmission and Midstream Gas Distribution and Storage Renewable Power Generation Energy Services Eliminations and Other Consolidated Three months ended (millions of Canadian dollars) Transportation revenues 2,214 1,137 249 — — — 3,600 Storage and other revenues 27 53 54 — — — 134 Gas gathering and processing revenues — 116 — — — — 116 Gas distribution revenues — — 1,856 — — — 1,856 Electricity and transmission revenues — — — 50 — — 50 Total revenue from contracts with customers 2,241 1,306 2,159 50 — — 5,756 Commodity sales — — — — 6,632 — 6,632 Other revenues 1, 2 340 10 29 102 6 (19 ) 468 Intersegment revenues 77 2 3 — 35 (117 ) — Total revenues 2,658 1,318 2,191 152 6,673 (136 ) 12,856 1 Includes mark-to-market gains/(losses) from our hedging program for the three months ended March 31, 2020 and 2019 of $1,106 million loss and $258 million gain, respectively. 2 Includes revenues from lease contracts for the three months ended March 31, 2020 and 2019 of $158 million and $164 million , respectively.
Contract with customer, asset and liability	Contract Balances Receivables Contract Assets Contract Liabilities (millions of Canadian dollars) Balance as at December 31, 2019 2,099 216 1,424 Balance as at March 31, 2020 2,287 224 1,500

SEGMENTED INFORMATION (Tables)

SEGMENTED INFORMATION (Tables)	3 Months Ended
	Mar. 31, 2020
Segment Reporting [Abstract]
Schedule of reporting information by segment	Liquids Pipelines Gas Transmission and Midstream Gas Distribution and Storage Renewable Power Generation Energy Services Eliminations and Other Consolidated Three months ended (millions of Canadian dollars) Revenues 1,534 1,357 1,682 153 7,398 (111 ) 12,013 Commodity and gas distribution costs (7 ) — (872 ) — (7,243 ) 104 (8,018 ) Operating and administrative (865 ) (507 ) (249 ) (50 ) (28 ) 99 (1,600 ) Income/(loss) from equity investments 197 (75 ) 23 16 2 — 163 Impairment of equity investments — (1,736 ) — — — — (1,736 ) Other income/(expense) (9 ) (93 ) 20 1 (8 ) (1,058 ) (1,147 ) Earnings/(loss) before interest, income taxes, and depreciation and amortization 850 (1,054 ) 604 120 121 (966 ) (325 ) Depreciation and amortization (882 ) Interest expense (706 ) Income tax recovery 549 Loss (1,364 ) Capital expenditures 1 500 391 222 23 — 22 1,158 Liquids Pipelines Gas Transmission and Midstream Gas Distribution and Storage Renewable Power Generation Energy Services Eliminations and Other Consolidated Three months ended (millions of Canadian dollars) Revenues 2,658 1,318 2,191 152 6,673 (136 ) 12,856 Commodity and gas distribution costs (6 ) — (1,264 ) (1 ) (6,629 ) 128 (7,772 ) Operating and administrative (801 ) (513 ) (294 ) (42 ) (33 ) 58 (1,625 ) Income/(loss) from equity investments 197 197 11 14 (7 ) 1 413 Other income 24 18 18 1 2 197 260 Earnings before interest, income taxes, and depreciation and amortization 2,072 1,020 662 124 6 248 4,132 Depreciation and amortization (840 ) Interest expense (685 ) Income tax expense (584 ) Earnings 2,023 Capital expenditures 1 1,020 394 173 14 1 25 1,627 1 Includes allowance for equity funds used during construction.

EARNINGS PER COMMON SHARE AND_2

EARNINGS PER COMMON SHARE AND DIVIDENDS PER SHARE (Tables)	3 Months Ended
	Mar. 31, 2020
Earnings Per Share [Abstract]
Schedule of weighted average shares outstanding used to calculate basic and diluted earnings per common share	Weighted average shares outstanding used to calculate basic and diluted earnings per share are as follows: Three months ended 2020 2019 (number of common shares in millions) Weighted average shares outstanding 2,019 2,016 Effect of dilutive options 2 3 Diluted weighted average shares outstanding 2,021 2,019
Schedule of preferred stock characteristics by class	On May 5, 2020, our Board of Directors declared the following quarterly dividends. All dividends are payable on June 1, 2020, to shareholders of record on May 15, 2020. Dividend per share Common Shares 1 $0.81000 Preference Shares, Series A $0.34375 Preference Shares, Series B $0.21340 Preference Shares, Series C 2 $0.25458 Preference Shares, Series D $0.27875 Preference Shares, Series F $0.29306 Preference Shares, Series H $0.27350 Preference Shares, Series J US$0.30540 Preference Shares, Series L US$0.30993 Preference Shares, Series N $0.31788 Preference Shares, Series P $0.27369 Preference Shares, Series R $0.25456 Preference Shares, Series 1 US$0.37182 Preference Shares, Series 3 $0.23356 Preference Shares, Series 5 US$0.33596 Preference Shares, Series 7 $0.27806 Preference Shares, Series 9 $0.25606 Preference Shares, Series 11 3 $0.24613 Preference Shares, Series 13 $0.27500 Preference Shares, Series 15 $0.27500 Preference Shares, Series 17 $0.32188 Preference Shares, Series 19 $0.30625 1 The quarterly dividend per common share was increased 9.8% to $0.81 from $0.738, effective March 1, 2020. 2 The quarterly dividend per share paid on Series C was increased to $0.25458 from $0.25305 on March 1, 2020 due to reset on a quarterly basis following the date of issuance of the Series C Preference Shares. 3 The quarterly dividend per share paid on Series 11 was decreased to $0.24613 from $0.275 on March 1, 2020, due to the reset of the annual dividend on March 1, 2020, and every five years thereafter.

AQUISITIONS AND DISPOSITIONS (T

AQUISITIONS AND DISPOSITIONS (Tables)	3 Months Ended
	Mar. 31, 2020
Discontinued Operations and Disposal Groups [Abstract]
Disposal groups, including discontinued operations	The table below summarizes the presentation of net assets held for sale in our Consolidated Statements of Financial Position: March 31, 2020 December 31, 2019 (millions of Canadian dollars) Accounts receivable and other (current assets held for sale) 17 28 Deferred amounts and other assets (long-term assets held for sale) 1 330 269 Accounts payable and other (current liabilities held for sale) (8 ) — Net assets held for sale 339 297 1 Included within Deferred amounts and other assets at March 31, 2020 and December 31, 2019 is property, plant and equipment of $241 million and $181 million , respectively.

DEBT (Tables)

DEBT (Tables)	3 Months Ended
	Mar. 31, 2020
Debt Disclosure [Abstract]
Schedule of credit facilities	The following table provides details of our committed credit facilities as at March 31, 2020 : Maturity Total Facilities Draws 1 Available (millions of Canadian dollars) Enbridge Inc. 2021-2024 10,959 6,250 4,709 Enbridge (U.S.) Inc. 2021-2024 7,829 2,162 5,667 Enbridge Pipelines Inc. 2021 2 3,000 2,155 845 Enbridge Gas Inc. 2021 2 2,000 835 1,165 Total committed credit facilities 23,788 11,402 12,386 1 Includes facility draws and commercial paper issuances that are back-stopped by credit facility. 2 Maturity date is inclusive of the one year term out option.
Schedule of long-term debt instruments	During the three months ended March 31, 2020 , we completed the following long-term debt issuances: Company Issue Date Principal Amount (millions of Canadian dollars, unless otherwise stated) Enbridge Inc. February 2020 Floating rate notes US$750
Schedule of repayment of debt	During the three months ended March 31, 2020 , we completed the following long-term debt repayments : Company Repayment Date Principal Amount (millions of Canadian dollars, unless otherwise stated) Enbridge Inc. January 2020 Floating rate notes US$700 March 2020 4.53% medium-term notes $500 Spectra Energy Partners, LP January 2020 6.09% senior secured notes US$111 Westcoast Energy Inc. January 2020 9.90% debentures $100

COMPONENTS OF ACCUMULATED OTH_2

COMPONENTS OF ACCUMULATED OTHER COMPREHENSIVE INCOME (Tables)	3 Months Ended
	Mar. 31, 2020
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Schedule of changes in AOCI attributable to Enbridge Inc. common shareholders	Changes in Accumulated Other Comprehensive Income (AOCI) attributable to our common shareholders for the three months ended March 31, 2020 and 2019 are as follows: Cash Flow Hedges Excluded Components of Fair Value Hedges Net Investment Hedges Cumulative Translation Adjustment Equity Investees Pension and OPEB Adjustment Total (millions of Canadian dollars) Balance as at January 1, 2020 (1,073 ) — (317 ) 1,396 67 (345 ) (272 ) Other comprehensive income/(loss) retained in AOCI (693 ) 3 (715 ) 5,459 (7 ) — 4,047 Other comprehensive (income)/loss reclassified to earnings Interest rate contracts 1 43 — — — — — 43 Foreign exchange contracts 2 1 — — — — — 1 Amortization of pension and OPEB actuarial loss and prior service costs 4 — — — — — 4 4 (649 ) 3 (715 ) 5,459 (7 ) 4 4,095 Tax impact Income tax on amounts retained in AOCI 182 — — — (3 ) — 179 Income tax on amounts reclassified to earnings (12 ) — — — — (1 ) (13 ) 170 — — — (3 ) (1 ) 166 Balance as at March 31, 2020 (1,552 ) 3 (1,032 ) 6,855 57 (342 ) 3,989 Cash Flow Hedges Net Investment Hedges Cumulative Translation Adjustment Equity Investees Pension and OPEB Adjustment Total (millions of Canadian dollars) Balance as at January 1, 2019 (770 ) (598 ) 4,323 34 (317 ) 2,672 Other comprehensive income/(loss) retained in AOCI (312 ) 109 (1,242 ) 8 — (1,437 ) Other comprehensive (income)/loss reclassified to earnings Interest rate contracts 1 32 — — — — 32 Foreign exchange contracts 2 2 — — — — 2 Other contracts 3 (9 ) — — — — (9 ) Amortization of pension and OPEB actuarial loss and prior service costs 4 — — — — 53 53 (287 ) 109 (1,242 ) 8 53 (1,359 ) Tax impact Income tax on amounts retained in AOCI 121 (15 ) — 4 — 110 Income tax on amounts reclassified to earnings (14 ) — — — (15 ) (29 ) 107 (15 ) — 4 (15 ) 81 Other — — — — 55 55 Balance as at March 31, 2019 (950 ) (504 ) 3,081 46 (224 ) 1,449 1 Reported within Interest expense in the Consolidated Statements of Earnings. 2 Reported within Transportation and other services revenues and Net foreign currency gain/(loss) in the Consolidated Statements of Earnings. 3 Reported within Operating and administrative expense in the Consolidated Statements of Earnings.

RISK MANAGEMENT AND FINANCIAL_2

RISK MANAGEMENT AND FINANCIAL INSTRUMENTS (Tables)	3 Months Ended
	Mar. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of the Consolidated Statements of Financial Position location and carrying value of derivative instruments	The following table summarizes the maximum potential settlement amounts in the event of these specific circumstances. All amounts are presented gross in the Consolidated Statements of Financial Position. March 31, 2020 Derivative Instruments Used as Cash Flow Hedges Derivative Instruments Used as Net Investment Hedges Derivative Instruments Used as Fair Value Hedges Non- Qualifying Derivative Instruments Total Gross Derivative Instruments as Presented Amounts Available for Offset Total Net Derivative Instruments (millions of Canadian dollars) Accounts receivable and other Foreign exchange contracts — — 49 56 105 (50 ) 55 Commodity contracts 2 — — 961 963 (289 ) 674 2 — 49 1,017 1,068 1 (339 ) 729 Deferred amounts and other assets Foreign exchange contracts 30 — 169 174 373 (128 ) 245 Commodity contracts 3 — — 65 68 (22 ) 46 33 — 169 239 441 (150 ) 291 Accounts payable and other Foreign exchange contracts (5 ) (20 ) — (899 ) (924 ) 50 (874 ) Interest rate contracts (813 ) — — (18 ) (831 ) — (831 ) Commodity contracts — — — (506 ) (506 ) 289 (217 ) Other Contracts — — — (1 ) (1 ) — (1 ) (818 ) (20 ) — (1,424 ) (2,262 ) 2 339 (1,923 ) Other long-term liabilities Foreign exchange contracts — — — (2,428 ) (2,428 ) 128 (2,300 ) Interest rate contracts (395 ) — — — (395 ) — (395 ) Commodity contracts — — — (81 ) (81 ) 22 (59 ) Other contracts (4 ) — — (3 ) (7 ) — (7 ) (399 ) — — (2,512 ) (2,911 ) 150 (2,761 ) Total net derivative assets/(liabilities) Foreign exchange contracts 25 (20 ) 218 (3,097 ) (2,874 ) — (2,874 ) Interest rate contracts (1,208 ) — — (18 ) (1,226 ) — (1,226 ) Commodity contracts 5 — — 439 444 — 444 Other contracts (4 ) — — (4 ) (8 ) — (8 ) (1,182 ) (20 ) 218 (2,680 ) (3,664 ) — (3,664 ) 1 As at March 31, 2020, $1,067 million was reported within Accounts receivable and other and $1 million within Accounts receivable from affiliates on the Consolidated Statements of Financial Position. 2 As at March 31, 2020, $2,246 million was reported within Accounts payable and other and $16 million within Accounts payable to affiliates on the Consolidated Statements of Financial Position. December 31, 2019 Derivative Instruments Used as Cash Flow Hedges Derivative Instruments Used as Net Investment Hedges Non- Qualifying Derivative Instruments Total Gross Derivative Instruments as Presented Amounts Available for Offset Total Net Derivative Instruments (millions of Canadian dollars) Accounts receivable and other Foreign exchange contracts — — 161 161 (78 ) 83 Commodity contracts — — 163 163 (47 ) 116 Other contracts 1 — 3 4 — 4 1 — 327 328 1 (125 ) 203 Deferred amounts and other assets Foreign exchange contracts 10 — 71 81 (42 ) 39 Commodity contracts — — 17 17 (2 ) 15 Other contracts 2 — 1 3 — 3 12 — 89 101 (44 ) 57 Accounts payable and other Foreign exchange contracts (5 ) (13 ) (392 ) (410 ) 78 (332 ) Interest rate contracts (353 ) — — (353 ) — (353 ) Commodity contracts — — (173 ) (173 ) 47 (126 ) (358 ) (13 ) (565 ) (936 ) 2 125 (811 ) Other long-term liabilities Foreign exchange contracts — — (934 ) (934 ) 42 (892 ) Interest rate contracts (181 ) — — (181 ) — (181 ) Commodity contracts (5 ) — (60 ) (65 ) 2 (63 ) (186 ) — (994 ) (1,180 ) 44 (1,136 ) Total net derivative assets/(liabilities) Foreign exchange contracts 5 (13 ) (1,094 ) (1,102 ) — (1,102 ) Interest rate contracts (534 ) — — (534 ) — (534 ) Commodity contracts (5 ) — (53 ) (58 ) — (58 ) Other contracts 3 — 4 7 — 7 (531 ) (13 ) (1,143 ) (1,687 ) — (1,687 ) 1 As at December 31, 2019, $327 million was reported within Accounts receivable and other and $1 million within Accounts receivable from affiliates on the Consolidated Statements of Financial Position. 2 As at December 31, 2019, $920 million was reported within Accounts payable and other and $16 million within Accounts payable to affiliates on the Consolidated Statements of Financial Position.
Summary of the maturity and notional principal or quantity outstanding related to derivative instruments	The following table summarizes the maturity and notional principal or quantity outstanding related to our derivative instruments. March 31, 2020 2020 2021 2022 2023 2024 Thereafter Total Foreign exchange contracts - United States dollar forwards - purchase (millions of United States dollars) 823 500 1,750 — — — 3,073 Foreign exchange contracts - United States dollar forwards - sell (millions of United States dollars) 4,416 5,631 5,703 3,784 1,856 — 21,390 Foreign exchange contracts - British pound (GBP) forwards - sell (millions of GBP) 89 27 28 29 30 90 293 Foreign exchange contracts - Euro forwards - sell (millions of Euro) 23 94 94 92 91 515 909 Foreign exchange contracts - Japanese yen forwards - purchase (millions of yen) — — 72,500 — — — 72,500 Interest rate contracts - short-term pay fixed rate (millions of Canadian dollars) 4,618 4,284 422 50 36 121 9,531 Interest rate contracts - long-term debt pay fixed rate (millions of Canadian dollars) 3,544 1,619 — — — — 5,163 Equity contracts (millions of Canadian dollars) 16 34 — — — — 50 Commodity contracts - natural gas (billions of cubic feet) (38 ) 57 45 22 10 11 107 Commodity contracts - crude oil (millions of barrels) 5 4 1 — — — 10 Commodity contracts - power (megawatt per hour) (MW/H) 79 (3 ) (43 ) (43 ) (43 ) (43 ) 1 (16 ) 2 1 As at March 31, 2020 , thereafter includes an average net purchase/(sell) of power of (43) MW/H for 2025. 2 Total is an average net purchase/(sell) of power.
Schedule of effect of cash flow hedges and net investment hedges on consolidated earnings and consolidated comprehensive income, before income taxes	The following table presents the effect of cash flow hedges, fair value hedges and net investment hedges on our consolidated earnings and consolidated comprehensive income, before the effect of income taxes: Three months ended 2020 2019 (millions of Canadian dollars) Amount of unrealized gain/(loss) recognized in OCI Cash flow hedges Foreign exchange contracts 19 (10 ) Interest rate contracts (715 ) (296 ) Commodity contracts 9 (3 ) Other contracts (7 ) 12 Fair value hedges Foreign exchange contracts 3 — Net investment hedges Foreign exchange contracts (7 ) 1 (698 ) (296 ) Amount of (gain)/loss reclassified from AOCI to earnings Foreign exchange contracts 1 1 2 Interest rate contracts 2 43 32 Other contracts 3 — (9 ) 44 25 1 Reported within Transportation and other services revenues and Net foreign currency gain/(loss) in the Consolidated Statements of Earnings. 2 Reported within Interest expense in the Consolidated Statements of Earnings. 3 Reported within Operating and administrative expense in the Consolidated Statements of Earnings. For foreign exchange derivative instruments that are designated and qualify as fair value hedges, the gain or loss on the derivative as well as the offsetting loss or gain on the hedged item attributable to the hedged risk is included in Net foreign currency gain/(loss) in the Consolidated Statements of Earnings. Any excluded components are included in the Statements of Comprehensive Income. Three months ended 2020 2019 (millions of Canadian dollars) Unrealized gain on derivative 218 — Unrealized loss on hedged item (203 ) — Realized loss on derivative (12 ) —
Schedule of unrealized gains and losses associated with changes in the fair value of non-qualifying derivatives	The following table presents the unrealized gains and losses associated with changes in the fair value of our non-qualifying derivatives: Three months ended 2020 2019 (millions of Canadian dollars) Foreign exchange contracts 1 (2,003 ) 616 Interest rate contracts 2 (18 ) 178 Commodity contracts 3 473 (261 ) Other contracts 4 (8 ) 5 Total unrealized derivative fair value gain/(loss), net (1,556 ) 538 1 For the respective three months ended periods, reported within Transportation and other services revenues ( 2020 - $1,061 million loss ; 2019 - $352 million gain ) and Net foreign currency gain/(loss) ( 2020 - $942 million loss ; 2019 - $264 million gain ) in the Consolidated Statements of Earnings. 2 Reported as an (increase)/decrease within Interest expense in the Consolidated Statements of Earnings. 3 For the respective three months ended periods, reported within Transportation and other services revenues ( 2020 - $34 million gain ; 2019 - $26 million loss ), Commodity sales ( 2020 - $1,493 million gain ; 2019 - $642 million loss ), Commodity costs ( 2020 - $1,045 million loss ; 2019 - $398 million gain ) and Operating and administrative expense ( 2020 - $9 million loss ; 2019 - $9 million gain ) in the Consolidated Statements of Earnings. 4 Reported within Operating and administrative expense in the Consolidated Statements of Earnings.
Schedule of group credit concentrations and maximum credit exposure, with respect to derivative instruments	We have credit concentrations and credit exposure, with respect to derivative instruments, in the following counterparty segments: March 31, December 31, (millions of Canadian dollars) Canadian financial institutions 128 146 United States financial institutions 310 40 European financial institutions 165 3 Asian financial institutions 76 92 Other 1 798 113 1,477 394 1 Other is comprised of commodity clearing house and physical natural gas and crude oil counterparties.
Schedule of derivative assets and liabilities measured at fair value	We have categorized our derivative assets and liabilities measured at fair value as follows: March 31, 2020 Level 1 Level 2 Level 3 Total Gross Derivative Instruments (millions of Canadian dollars) Financial assets Current derivative assets Foreign exchange contracts — 105 — 105 Commodity contracts 90 73 800 963 90 178 800 1,068 Long-term derivative assets Foreign exchange contracts — 373 — 373 Commodity contracts 33 19 16 68 33 392 16 441 Financial liabilities Current derivative liabilities Foreign exchange contracts — (924 ) — (924 ) Interest rate contracts — (831 ) — (831 ) Commodity contracts (58 ) (20 ) (428 ) (506 ) Other contracts — (1 ) — (1 ) (58 ) (1,776 ) (428 ) (2,262 ) Long-term derivative liabilities Foreign exchange contracts — (2,428 ) — (2,428 ) Interest rate contracts — (395 ) — (395 ) Commodity contracts (13 ) (8 ) (60 ) (81 ) Other contracts — (7 ) — (7 ) (13 ) (2,838 ) (60 ) (2,911 ) Total net financial assets/(liabilities) Foreign exchange contracts — (2,874 ) — (2,874 ) Interest rate contracts — (1,226 ) — (1,226 ) Commodity contracts 52 64 328 444 Other contracts — (8 ) — (8 ) 52 (4,044 ) 328 (3,664 ) December 31, 2019 Level 1 Level 2 Level 3 Total Gross Derivative Instruments (millions of Canadian dollars) Financial assets Current derivative assets Foreign exchange contracts — 161 — 161 Commodity contracts — 33 130 163 Other contracts — 4 — 4 — 198 130 328 Long-term derivative assets Foreign exchange contracts — 81 — 81 Commodity contracts — 12 5 17 Other contracts — 3 — 3 — 96 5 101 Financial liabilities Current derivative liabilities Foreign exchange contracts — (410 ) — (410 ) Interest rate contracts — (353 ) — (353 ) Commodity contracts (5 ) (23 ) (145 ) (173 ) (5 ) (786 ) (145 ) (936 ) Long-term derivative liabilities Foreign exchange contracts — (934 ) — (934 ) Interest rate contracts — (181 ) — (181 ) Commodity contracts — (6 ) (59 ) (65 ) — (1,121 ) (59 ) (1,180 ) Total net financial assets/(liabilities) Foreign exchange contracts — (1,102 ) — (1,102 ) Interest rate contracts — (534 ) — (534 ) Commodity contracts (5 ) 16 (69 ) (58 ) Other contracts — 7 — 7 (5 ) (1,613 ) (69 ) (1,687 )
Schedule of significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments	The significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments were as follows: March 31, 2020 Fair Value Unobservable Input Minimum Price Maximum Price Weighted Average Price Unit of Measurement (fair value in millions of Canadian dollars) Commodity contracts - financial 1 Natural gas (4 ) Forward gas price 1.81 5.15 3.18 $/mmbtu 2 Crude 11 Forward crude price 4.46 96.53 46.61 $/barrel Power (57 ) Forward power price 21.00 70.42 53.00 $/MW/H Commodity contracts - physical 1 Natural gas 36 Forward gas price 1.51 7.53 2.56 $/mmbtu 2 Crude 336 Forward crude price 7.00 76.89 28.24 $/barrel NGL 6 Forward NGL price 0.11 1.20 0.42 $/gallon 328 1 Financial and physical forward commodity contracts are valued using a market approach valuation technique. 2 One million British thermal units (mmbtu).
Schedule of changes in net fair value of derivative assets and liabilities classified as Level 3 in the fair value hierarchy	Changes in net fair value of derivative assets and liabilities classified as Level 3 in the fair value hierarchy were as follows: Three months ended 2020 2019 (millions of Canadian dollars) Level 3 net derivative liability at beginning of period (69 ) (11 ) Total gain/(loss) Included in earnings 1 349 (52 ) Included in OCI 9 (3 ) Settlements 39 (156 ) Level 3 net derivative liability at end of period 328 (222 ) 1 Reported within Transportation and other services revenues, Commodity costs and Operating and administrative expense in the Consolidated Statements of Earnings.

PENSION AND OTHER POSTRETIREM_2

PENSION AND OTHER POSTRETIREMENT BENEFITS (Tables)	3 Months Ended
	Mar. 31, 2020
Retirement Benefits [Abstract]
Schedule of net benefit costs recognized	Three months ended 2020 2019 (millions of Canadian dollars) Service cost 42 51 Interest cost 33 51 Expected return on plan assets (67 ) (84 ) Amortization of actuarial loss and prior service costs 9 7 Net periodic benefit costs 17 25

CHANGES IN ACCOUNTING POLICIE_2

CHANGES IN ACCOUNTING POLICIES - Narrative (Details) - Retained earnings/(deficit) $ in Millions	Jan. 01, 2020CAD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Additional deficit on Statements of Financial Position	$ 66
ASU 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Additional deficit on Statements of Financial Position	$ 66

REVENUES - Disaggregation of Re

REVENUES - Disaggregation of Revenue (Details) - CAD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 5,536	$ 5,756
Total revenues	12,013	12,856
Revenues from products transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	15	17
Revenues from products and services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	5,521	5,739
Transportation revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	3,910	3,600
Storage and other revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	152	134
Gas gathering and processing revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	7	116
Gas distribution revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,417	1,856
Total revenues	1,416	1,876
Electricity and transmission revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	50	50
Commodity sales
Disaggregation of Revenue [Line Items]
Revenue not from contract with customers	7,389	6,632
Total revenues	7,389	6,632
Other revenues
Disaggregation of Revenue [Line Items]
Revenue not from contract with customers	(912)	468
Liquids Pipelines
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	2,466	2,241
Liquids Pipelines | Revenues from products transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Liquids Pipelines | Revenues from products and services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	2,466	2,241
Gas Transmission and Midstream
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,341	1,306
Gas Transmission and Midstream | Revenues from products transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Gas Transmission and Midstream | Revenues from products and services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,341	1,306
Gas Distribution and Storage
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,679	2,159
Gas Distribution and Storage | Revenues from products transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	15	17
Gas Distribution and Storage | Revenues from products and services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,664	2,142
Renewable Power Generation and Transmission
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	50	50
Renewable Power Generation and Transmission | Revenues from products transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Renewable Power Generation and Transmission | Revenues from products and services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	50	50
Energy Services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Energy Services | Revenues from products transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Energy Services | Revenues from products and services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Business segments | Liquids Pipelines
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	2,466	2,241
Total revenues	1,534	2,658
Business segments | Liquids Pipelines | Transportation revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	2,440	2,214
Business segments | Liquids Pipelines | Storage and other revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	26	27
Business segments | Liquids Pipelines | Gas gathering and processing revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Business segments | Liquids Pipelines | Gas distribution revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Business segments | Liquids Pipelines | Electricity and transmission revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Business segments | Liquids Pipelines | Commodity sales
Disaggregation of Revenue [Line Items]
Revenue not from contract with customers	0	0
Business segments | Liquids Pipelines | Other revenues
Disaggregation of Revenue [Line Items]
Revenue not from contract with customers	(1,017)	340
Business segments | Gas Transmission and Midstream
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,341	1,306
Total revenues	1,357	1,318
Business segments | Gas Transmission and Midstream | Transportation revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,255	1,137
Business segments | Gas Transmission and Midstream | Storage and other revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	79	53
Business segments | Gas Transmission and Midstream | Gas gathering and processing revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	7	116
Business segments | Gas Transmission and Midstream | Gas distribution revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Business segments | Gas Transmission and Midstream | Electricity and transmission revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Business segments | Gas Transmission and Midstream | Commodity sales
Disaggregation of Revenue [Line Items]
Revenue not from contract with customers	0	0
Business segments | Gas Transmission and Midstream | Other revenues
Disaggregation of Revenue [Line Items]
Revenue not from contract with customers	16	10
Business segments | Gas Distribution and Storage
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,679	2,159
Total revenues	1,682	2,191
Business segments | Gas Distribution and Storage | Transportation revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	215	249
Business segments | Gas Distribution and Storage | Storage and other revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	47	54
Business segments | Gas Distribution and Storage | Gas gathering and processing revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Business segments | Gas Distribution and Storage | Gas distribution revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,417	1,856
Business segments | Gas Distribution and Storage | Electricity and transmission revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Business segments | Gas Distribution and Storage | Commodity sales
Disaggregation of Revenue [Line Items]
Revenue not from contract with customers	0	0
Business segments | Gas Distribution and Storage | Other revenues
Disaggregation of Revenue [Line Items]
Revenue not from contract with customers	(1)	29
Business segments | Renewable Power Generation and Transmission
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	50	50
Total revenues	153	152
Business segments | Renewable Power Generation and Transmission | Transportation revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Business segments | Renewable Power Generation and Transmission | Storage and other revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Business segments | Renewable Power Generation and Transmission | Gas gathering and processing revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Business segments | Renewable Power Generation and Transmission | Gas distribution revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Business segments | Renewable Power Generation and Transmission | Electricity and transmission revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	50	50
Business segments | Renewable Power Generation and Transmission | Commodity sales
Disaggregation of Revenue [Line Items]
Revenue not from contract with customers	0	0
Business segments | Renewable Power Generation and Transmission | Other revenues
Disaggregation of Revenue [Line Items]
Revenue not from contract with customers	103	102
Business segments | Energy Services
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Total revenues	7,398	6,673
Business segments | Energy Services | Transportation revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Business segments | Energy Services | Storage and other revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Business segments | Energy Services | Gas gathering and processing revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Business segments | Energy Services | Gas distribution revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Business segments | Energy Services | Electricity and transmission revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Business segments | Energy Services | Commodity sales
Disaggregation of Revenue [Line Items]
Revenue not from contract with customers	7,389	6,632
Business segments | Energy Services | Other revenues
Disaggregation of Revenue [Line Items]
Revenue not from contract with customers	(7)	6
Eliminations and Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Total revenues	(111)	(136)
Eliminations and Other | Transportation revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Eliminations and Other | Storage and other revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Eliminations and Other | Gas gathering and processing revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Eliminations and Other | Gas distribution revenue
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Eliminations and Other | Electricity and transmission revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0	0
Eliminations and Other | Commodity sales
Disaggregation of Revenue [Line Items]
Revenue not from contract with customers	0	0
Eliminations and Other | Other revenues
Disaggregation of Revenue [Line Items]
Revenue not from contract with customers	(6)	(19)
Intersegment revenues
Disaggregation of Revenue [Line Items]
Revenue not from contract with customers	(105)	(117)
Total revenues	(111)	(136)
Intersegment revenues | Liquids Pipelines
Disaggregation of Revenue [Line Items]
Revenue not from contract with customers	85	77
Intersegment revenues | Gas Transmission and Midstream
Disaggregation of Revenue [Line Items]
Revenue not from contract with customers	0	2
Intersegment revenues | Gas Distribution and Storage
Disaggregation of Revenue [Line Items]
Revenue not from contract with customers	4	3
Intersegment revenues | Renewable Power Generation and Transmission
Disaggregation of Revenue [Line Items]
Revenue not from contract with customers	0	0
Intersegment revenues | Energy Services
Disaggregation of Revenue [Line Items]
Revenue not from contract with customers	$ 16	$ 35

REVENUES - Narrative (Details)

REVENUES - Narrative (Details) - CAD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue from Contract with Customer [Abstract]
Mark-to-market gains (losses) from hedging program	$ (1,106)	$ 258
Revenues from lease contracts	158	$ 164
Revenue recognized	86
Increase (decrease) in contract with customers, liability	76
Remaining performance obligation	68,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-04-01
Revenue from Contract with Customer [Abstract]
Remaining performance obligation	$ 5,500
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, period	9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue from Contract with Customer [Abstract]
Remaining performance obligation	$ 6,400
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, period	1 year

REVENUES - Contract Balances (D

REVENUES - Contract Balances (Details) - CAD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Receivables	$ 2,287	$ 2,099
Contract Assets	224	216
Contract Liabilities	$ 1,500	$ 1,424

SEGMENTED INFORMATION (Details)

SEGMENTED INFORMATION (Details) - CAD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segmented Information
Revenues	$ 12,013	$ 12,856
Commodity and gas distribution costs	(8,018)	(7,772)
Operating and administrative	(1,600)	(1,625)
Income/(loss) from equity investments	163	413
Impairment of equity investments	(1,736)	0
Other income/(expense)	(1,147)	260
Earnings/(loss) before interest, income taxes, and depreciation and amortization	(325)	4,132
Depreciation and amortization	(882)	(840)
Interest expense	(706)	(685)
Income tax expense	549	(584)
Earnings/(loss)	(1,364)	2,023
Capital expenditures	1,158	1,627
Intersegment Eliminations
Segmented Information
Revenues	(111)	(136)
Commodity and gas distribution costs	104	128
Operating and administrative	99	58
Income/(loss) from equity investments	0	1
Impairment of equity investments	0
Other income/(expense)	(1,058)	197
Earnings/(loss) before interest, income taxes, and depreciation and amortization	(966)	248
Capital expenditures	22	25
Liquids Pipelines | Business segments
Segmented Information
Revenues	1,534	2,658
Commodity and gas distribution costs	(7)	(6)
Operating and administrative	(865)	(801)
Income/(loss) from equity investments	197	197
Impairment of equity investments	0
Other income/(expense)	(9)	24
Earnings/(loss) before interest, income taxes, and depreciation and amortization	850	2,072
Capital expenditures	500	1,020
Gas Transmission and Midstream | Business segments
Segmented Information
Revenues	1,357	1,318
Commodity and gas distribution costs	0	0
Operating and administrative	(507)	(513)
Income/(loss) from equity investments	(75)	197
Impairment of equity investments	(1,736)
Other income/(expense)	(93)	18
Earnings/(loss) before interest, income taxes, and depreciation and amortization	(1,054)	1,020
Capital expenditures	391	394
Gas Distribution and Storage | Business segments
Segmented Information
Revenues	1,682	2,191
Commodity and gas distribution costs	(872)	(1,264)
Operating and administrative	(249)	(294)
Income/(loss) from equity investments	23	11
Impairment of equity investments	0
Other income/(expense)	20	18
Earnings/(loss) before interest, income taxes, and depreciation and amortization	604	662
Capital expenditures	222	173
Renewable Power Generation and Transmission | Business segments
Segmented Information
Revenues	153	152
Commodity and gas distribution costs	0	(1)
Operating and administrative	(50)	(42)
Income/(loss) from equity investments	16	14
Impairment of equity investments	0
Other income/(expense)	1	1
Earnings/(loss) before interest, income taxes, and depreciation and amortization	120	124
Capital expenditures	23	14
Energy Services | Business segments
Segmented Information
Revenues	7,398	6,673
Commodity and gas distribution costs	(7,243)	(6,629)
Operating and administrative	(28)	(33)
Income/(loss) from equity investments	2	(7)
Impairment of equity investments	0
Other income/(expense)	(8)	2
Earnings/(loss) before interest, income taxes, and depreciation and amortization	121	6
Capital expenditures	$ 0	$ 1

EARNINGS PER COMMON SHARE AND_3

EARNINGS PER COMMON SHARE AND DIVIDENDS PER SHARE - Basic (Details) - shares shares in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Earnings Per Share [Abstract]
Prorata weighted average interest in entity's own common shares (in shares)	6	6

EARNINGS PER COMMON SHARE AND_4

EARNINGS PER COMMON SHARE AND DIVIDENDS PER SHARE - Diluted (Details) - $ / shares shares in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Weighted average number of common shares outstanding diluted
Weighted average common shares outstanding (in shares)	2,019	2,016
Effect of dilutive options (in shares)	2	3
Diluted weighted average common shares outstanding (in shares)	2,021	2,019
Stock options
Weighted average number of common shares outstanding diluted
Antidilutive securities excluded from the diluted earnings per common share calculation (in shares)	16.7	10.5
Weighted average exercise price of antidilutive securities (in Canadian dollars per share)	$ 56.26	$ 55.32

EARNINGS PER COMMON SHARE AND_5

EARNINGS PER COMMON SHARE AND DIVIDENDS PER SHARE - Dividends Per Share (Details)	Mar. 01, 2020$ / shares	Feb. 29, 2020$ / shares	Mar. 31, 2020$ / shares	Mar. 31, 2020$ / shares
Dividends Payable [Line Items]
Common stock, dividends, per share, declared (in dollars per share)	$ 0.81	$ 0.738
Increase in quarterly dividend per common share (percent)	9.80%
Common shares
Dividends Payable [Line Items]
Common stock, dividends, per share, declared (in dollars per share)			$ 0.81000
Preferred share investment | Preference Shares, Series A
Dividends Payable [Line Items]
Dividend per share (in dollars per share)			0.34375
Preferred share investment | Preference Shares, Series B
Dividends Payable [Line Items]
Dividend per share (in dollars per share)			0.21340
Preferred share investment | Preference Shares, Series C
Dividends Payable [Line Items]
Dividend per share (in dollars per share)	$ 0.25458	0.25305	0.25458
Preferred share investment | Preference Shares, Series D
Dividends Payable [Line Items]
Dividend per share (in dollars per share)			0.27875
Preferred share investment | Preference Shares, Series F
Dividends Payable [Line Items]
Dividend per share (in dollars per share)			0.29306
Preferred share investment | Preference Shares, Series H
Dividends Payable [Line Items]
Dividend per share (in dollars per share)			0.27350
Preferred share investment | Preference Shares, Series J
Dividends Payable [Line Items]
Dividend per share (in dollars per share)				$ 0.30540
Preferred share investment | Preference Shares, Series L
Dividends Payable [Line Items]
Dividend per share (in dollars per share)				0.30993
Preferred share investment | Preference Shares, Series N
Dividends Payable [Line Items]
Dividend per share (in dollars per share)			0.31788
Preferred share investment | Preference Shares, Series P
Dividends Payable [Line Items]
Dividend per share (in dollars per share)			0.27369
Preferred share investment | Preference Shares, Series R
Dividends Payable [Line Items]
Dividend per share (in dollars per share)			0.25456
Preferred share investment | Preference Shares, Series 1
Dividends Payable [Line Items]
Dividend per share (in dollars per share)				0.37182
Preferred share investment | Preference Shares, Series 3
Dividends Payable [Line Items]
Dividend per share (in dollars per share)			0.23356
Preferred share investment | Preference Shares, Series 5
Dividends Payable [Line Items]
Dividend per share (in dollars per share)				$ 0.33596
Preferred share investment | Preference Shares, Series 7
Dividends Payable [Line Items]
Dividend per share (in dollars per share)			0.27806
Preferred share investment | Preference Shares, Series 9
Dividends Payable [Line Items]
Dividend per share (in dollars per share)			0.25606
Preferred share investment | Preference Shares, Series 11
Dividends Payable [Line Items]
Dividend per share (in dollars per share)	$ 0.24613	$ 0.275	0.24613
Preferred share investment | Preference Shares, Series 13
Dividends Payable [Line Items]
Dividend per share (in dollars per share)			0.27500
Preferred share investment | Preference Shares, Series 15
Dividends Payable [Line Items]
Dividend per share (in dollars per share)			0.27500
Preferred share investment | Preference Shares, Series 17
Dividends Payable [Line Items]
Dividend per share (in dollars per share)			0.32188
Preferred share investment | Preference Shares, Series 19
Dividends Payable [Line Items]
Dividend per share (in dollars per share)			$ 0.30625

AQUISITIONS AND DISPOSITIONS -

AQUISITIONS AND DISPOSITIONS - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020CAD ($)
Held-for-sale | Ozark assets
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss upon reclassification and subsequent remeasurement as held for sale	$ 19

AQUISITIONS AND DISPOSITIONS _2

AQUISITIONS AND DISPOSITIONS - Assets Held for Sale (Details) - Held-for-sale - CAD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accounts receivable and other (current assets held for sale)	$ 17	$ 28
Deferred amounts and other assets (long-term assets held for sale)	330	269
Accounts payable and other (current liabilities held for sale)	(8)	0
Net assets held for sale	339	297
Property, plant and equipment, noncurrent	$ 241	$ 181

DEBT - Credit Facilities (Detai

DEBT - Credit Facilities (Details) - Committed credit facilities	Mar. 31, 2020CAD ($)
CREDIT FACILITIES
Total Facilities	$ 23,788,000,000
Draws	11,402,000,000
Available	12,386,000,000
Enbridge (U.S.) Inc.
CREDIT FACILITIES
Total Facilities	7,829,000,000
Draws	2,162,000,000
Available	5,667,000,000
Enbridge Pipelines Inc.
CREDIT FACILITIES
Total Facilities	3,000,000,000
Draws	2,155,000,000
Available	845,000,000
Enbridge Gas Inc.
CREDIT FACILITIES
Total Facilities	2,000,000,000
Draws	835,000,000
Available	1,165,000,000
Enbridge Inc.
CREDIT FACILITIES
Total Facilities	10,959,000,000
Draws	6,250,000,000
Available	$ 4,709,000,000

DEBT - Narrative (Details)

DEBT - Narrative (Details)	Apr. 01, 2020CAD ($)	Mar. 31, 2020CAD ($)	Feb. 25, 2020USD ($)credit_facility	Feb. 24, 2020USD ($)	Mar. 31, 2020CAD ($)	Apr. 09, 2020CAD ($)	Dec. 31, 2019CAD ($)
Line of Credit Facility [Line Items]
Commitment fee percentage					0.10%
Long-term debt		$ 63,571,000,000			$ 63,571,000,000		$ 59,661,000,000
Long-term debt, fair value adjustment					847,000,000
Amortization of fair value adjustment					15,000,000
Commercial paper and credit facility draws
Line of Credit Facility [Line Items]
Long-term debt		9,855,000,000			9,855,000,000		8,974,000,000
10-year medium term notes | Medium-term notes | Subsequent event
Line of Credit Facility [Line Items]
Term of debt instrument	10 years
Principal amount of debt	$ 600,000,000
Interest rate (as a percent)	2.90%
30-year medium term notes | Medium-term notes | Subsequent event
Line of Credit Facility [Line Items]
Term of debt instrument	30 years
Principal amount of debt	$ 600,000,000
Interest rate (as a percent)	3.65%
Fixed-to-floating subordinated term notes | Subordinated term notes
Line of Credit Facility [Line Items]
Subordinated debt		6,955,000,000			6,955,000,000		6,550,000,000
Non-revolving credit facility
Line of Credit Facility [Line Items]
Amount of credit facility				$ 1,000,000,000
Term of debt instrument				2 years
Non-revolving, bilateral credit facility
Line of Credit Facility [Line Items]
Amount of credit facility			$ 500,000,000
Number of credit facilities | credit_facility			2
Term of debt instrument			1 year
Revolving credit facility
Line of Credit Facility [Line Items]
Amount of credit facility		$ 1,700,000,000			1,700,000,000
Term of debt instrument		1 year
Revolving credit facility | Subsequent event
Line of Credit Facility [Line Items]
Amount of credit facility						$ 3,000,000,000
Uncommitted demand credit facilities
Line of Credit Facility [Line Items]
Amount of credit facility		$ 806,000,000			806,000,000		916,000,000
Unutilized amount of facility		$ 523,000,000			$ 523,000,000		$ 476,000,000

DEBT - Long Term Debt Issuance

DEBT - Long Term Debt Issuance (Details)	Feb. 29, 2020USD ($)
Enbridge Inc. | Floating rate notes
Debt Instrument [Line Items]
Principal Amount	$ 750,000,000

DEBT - Long Term Debt Repayment

DEBT - Long Term Debt Repayments (Details) $ in Millions, $ in Millions	1 Months Ended
	Mar. 31, 2020CAD ($)	Jan. 31, 2020USD ($)	Jan. 31, 2020CAD ($)
Spectra Energy Partners, LP | 6.09% senior secured notes
DEBT
Principal Amount		$ 111
Interest rate (as a percent)		6.09%	6.09%
Westcoast Energy Inc. | 9.90% debentures
DEBT
Principal Amount			$ 100
Interest rate (as a percent)		9.90%	9.90%
Enbridge Inc. | Floating rate notes
DEBT
Principal Amount			$ 700
Enbridge Inc. | 4.53% medium-term notes
DEBT
Principal Amount	$ 500
Interest rate (as a percent)	4.53%

COMPONENTS OF ACCUMULATED OTH_3

COMPONENTS OF ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - CAD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Changes in AOCI
Balance at the beginning of the period	$ 69,407
Other comprehensive income/(loss) retained in AOCI	4,047	$ (1,437)
Other comprehensive (income)/loss reclassified to earnings	4	53
Total before tax impact	4,095	(1,359)
Income tax on amounts retained in AOCI	179	110
Income tax on amounts reclassified to earnings	(13)	(29)
Tax impact	166	81
Other		55
Balance at the end of the period	72,291	73,919
Interest rate contracts
Changes in AOCI
Other comprehensive (income)/loss reclassified to earnings	43	32
Foreign exchange contracts
Changes in AOCI
Other comprehensive (income)/loss reclassified to earnings	1	2
Other contracts
Changes in AOCI
Other comprehensive (income)/loss reclassified to earnings		(9)
Total
Changes in AOCI
Balance at the beginning of the period	(272)	2,672
Balance at the end of the period	3,989	1,449
Cash Flow Hedges
Changes in AOCI
Balance at the beginning of the period	(1,073)	(770)
Other comprehensive income/(loss) retained in AOCI	(693)	(312)
Total before tax impact	(649)	(287)
Income tax on amounts retained in AOCI	182	121
Income tax on amounts reclassified to earnings	(12)	(14)
Tax impact	170	107
Balance at the end of the period	(1,552)	(950)
Cash Flow Hedges | Interest rate contracts
Changes in AOCI
Other comprehensive (income)/loss reclassified to earnings	43	32
Cash Flow Hedges | Foreign exchange contracts
Changes in AOCI
Other comprehensive (income)/loss reclassified to earnings	1	2
Cash Flow Hedges | Other contracts
Changes in AOCI
Other comprehensive (income)/loss reclassified to earnings		(9)
Excluded Components of Fair Value Hedges
Changes in AOCI
Balance at the beginning of the period	0
Other comprehensive income/(loss) retained in AOCI	3
Total before tax impact	3
Income tax on amounts retained in AOCI	0
Income tax on amounts reclassified to earnings	0
Tax impact	0
Balance at the end of the period	3
Net Investment Hedges
Changes in AOCI
Balance at the beginning of the period	(317)	(598)
Other comprehensive income/(loss) retained in AOCI	(715)	109
Total before tax impact	(715)	109
Income tax on amounts retained in AOCI	0	(15)
Income tax on amounts reclassified to earnings	0	0
Tax impact	0	(15)
Balance at the end of the period	(1,032)	(504)
Cumulative Translation Adjustment
Changes in AOCI
Balance at the beginning of the period	1,396	4,323
Other comprehensive income/(loss) retained in AOCI	5,459	(1,242)
Total before tax impact	5,459	(1,242)
Income tax on amounts retained in AOCI	0	0
Income tax on amounts reclassified to earnings	0	0
Tax impact	0	0
Balance at the end of the period	6,855	3,081
Equity Investees
Changes in AOCI
Balance at the beginning of the period	67	34
Other comprehensive income/(loss) retained in AOCI	(7)	8
Total before tax impact	(7)	8
Income tax on amounts retained in AOCI	(3)	4
Income tax on amounts reclassified to earnings	0	0
Tax impact	(3)	4
Balance at the end of the period	57	46
Pension and OPEB Adjustment
Changes in AOCI
Balance at the beginning of the period	(345)	(317)
Other comprehensive (income)/loss reclassified to earnings	4	53
Total before tax impact	4	53
Income tax on amounts retained in AOCI	0	0
Income tax on amounts reclassified to earnings	(1)	(15)
Tax impact	(1)	(15)
Other		55
Balance at the end of the period	$ (342)	$ (224)

IMPAIRMENT OF EQUITY INVESTME_2

IMPAIRMENT OF EQUITY INVESTMENTS (Details) - CAD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]
Impairment loss on equity method investments	$ 1,736	$ 0
Loss from equity investments	(163)	$ (413)
DCP Midstream, LLC
Schedule of Equity Method Investments [Line Items]
Loss from equity investments	324
Carrying value of investment	$ 341		$ 2,193

RISK MANAGEMENT AND FINANCIAL_3

RISK MANAGEMENT AND FINANCIAL INSTRUMENTS - Market Risk (Details)	3 Months Ended
	Mar. 31, 2020equity_type
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
Floating rate debt as target percentage of total debt outstanding	30.00%
Interest rate contracts - short-term borrowings
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
Average swap rate, variable (as a percent)	2.90%
Interest rate contracts - long-term debt
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
Average swap rate, variable (as a percent)	3.10%
Equity contracts
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
Number of forms of stock-based compensation with equity price risk	1

RISK MANAGEMENT AND FINANCIAL_4

RISK MANAGEMENT AND FINANCIAL INSTRUMENTS - Total Derivative Instruments (Details) - CAD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
TOTAL DERIVATIVE INSTRUMENTS
Total net derivative asset/(liability)	$ (3,664)	$ (1,687)
Derivative liabilities, Total Net Derivative Instruments	(3,664)	(1,687)
Non-Qualifying Derivative Instruments
TOTAL DERIVATIVE INSTRUMENTS
Total net derivative asset/(liability)	(2,680)	(1,143)
Cash Flow Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Total net derivative asset/(liability)	(1,182)	(531)
Net Investment Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Total net derivative asset/(liability)	(20)	(13)
Fair Value Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Total net derivative asset/(liability)	218
Accounts receivable and other
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	1,068	328
Derivative assets, Amounts Available for Offset	(339)	(125)
Derivative assets, Total Net Derivative Instruments	729	203
Current derivative assets	1,067	327
Accounts receivable and other | Non-Qualifying Derivative Instruments
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	1,017	327
Accounts receivable and other | Cash Flow Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	2	1
Accounts receivable and other | Net Investment Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	0	0
Accounts receivable and other | Fair Value Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	49
Deferred amounts and other assets
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	441	101
Derivative assets, Amounts Available for Offset	(150)	(44)
Derivative assets, Total Net Derivative Instruments	291	57
Deferred amounts and other assets | Non-Qualifying Derivative Instruments
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	239	89
Deferred amounts and other assets | Cash Flow Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	33	12
Deferred amounts and other assets | Net Investment Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	0	0
Deferred amounts and other assets | Fair Value Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	169
Accounts payable and other
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(2,262)	(936)
Derivative liabilities, Amounts Available for Offset	339	125
Derivative liabilities, Total Net Derivative Instruments	(1,923)	(811)
Current derivative liabilities	2,246	920
Accounts payable and other | Non-Qualifying Derivative Instruments
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(1,424)	(565)
Accounts payable and other | Cash Flow Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(818)	(358)
Accounts payable and other | Net Investment Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(20)	(13)
Accounts payable and other | Fair Value Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	0
Other long-term liabilities
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(2,911)	(1,180)
Derivative liabilities, Amounts Available for Offset	150	44
Derivative liabilities, Total Net Derivative Instruments	(2,761)	(1,136)
Other long-term liabilities | Non-Qualifying Derivative Instruments
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(2,512)	(994)
Other long-term liabilities | Cash Flow Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(399)	(186)
Other long-term liabilities | Net Investment Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	0	0
Other long-term liabilities | Fair Value Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	0
Accounts receivable from affiliates
TOTAL DERIVATIVE INSTRUMENTS
Current derivative assets	1	1
Accounts payable to affiliates
TOTAL DERIVATIVE INSTRUMENTS
Current derivative liabilities	16	16
Foreign exchange contracts
TOTAL DERIVATIVE INSTRUMENTS
Total net derivative asset/(liability)	(2,874)	(1,102)
Derivative liabilities, Total Net Derivative Instruments	(2,874)	(1,102)
Foreign exchange contracts | Non-Qualifying Derivative Instruments
TOTAL DERIVATIVE INSTRUMENTS
Total net derivative asset/(liability)	(3,097)	(1,094)
Foreign exchange contracts | Cash Flow Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Total net derivative asset/(liability)	25	5
Foreign exchange contracts | Net Investment Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Total net derivative asset/(liability)	(20)	(13)
Foreign exchange contracts | Fair Value Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Total net derivative asset/(liability)	218
Foreign exchange contracts | Accounts receivable and other
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	105	161
Derivative assets, Amounts Available for Offset	(50)	(78)
Derivative assets, Total Net Derivative Instruments	55	83
Foreign exchange contracts | Accounts receivable and other | Non-Qualifying Derivative Instruments
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	56	161
Foreign exchange contracts | Accounts receivable and other | Cash Flow Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	0	0
Foreign exchange contracts | Accounts receivable and other | Net Investment Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	0	0
Foreign exchange contracts | Accounts receivable and other | Fair Value Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	49
Foreign exchange contracts | Deferred amounts and other assets
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	373	81
Derivative assets, Amounts Available for Offset	(128)	(42)
Derivative assets, Total Net Derivative Instruments	245	39
Foreign exchange contracts | Deferred amounts and other assets | Non-Qualifying Derivative Instruments
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	174	71
Foreign exchange contracts | Deferred amounts and other assets | Cash Flow Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	30	10
Foreign exchange contracts | Deferred amounts and other assets | Net Investment Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	0	0
Foreign exchange contracts | Deferred amounts and other assets | Fair Value Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	169
Foreign exchange contracts | Accounts payable and other
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(924)	(410)
Derivative liabilities, Amounts Available for Offset	50	78
Derivative liabilities, Total Net Derivative Instruments	(874)	(332)
Foreign exchange contracts | Accounts payable and other | Non-Qualifying Derivative Instruments
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(899)	(392)
Foreign exchange contracts | Accounts payable and other | Cash Flow Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(5)	(5)
Foreign exchange contracts | Accounts payable and other | Net Investment Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(20)	(13)
Foreign exchange contracts | Accounts payable and other | Fair Value Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	0
Foreign exchange contracts | Other long-term liabilities
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(2,428)	(934)
Derivative liabilities, Amounts Available for Offset	128	42
Derivative liabilities, Total Net Derivative Instruments	(2,300)	(892)
Foreign exchange contracts | Other long-term liabilities | Non-Qualifying Derivative Instruments
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(2,428)	(934)
Foreign exchange contracts | Other long-term liabilities | Cash Flow Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	0	0
Foreign exchange contracts | Other long-term liabilities | Net Investment Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	0	0
Foreign exchange contracts | Other long-term liabilities | Fair Value Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	0
Interest rate contracts
TOTAL DERIVATIVE INSTRUMENTS
Total net derivative asset/(liability)	(1,226)	(534)
Derivative liabilities, Total Net Derivative Instruments	(1,226)	(534)
Interest rate contracts | Non-Qualifying Derivative Instruments
TOTAL DERIVATIVE INSTRUMENTS
Total net derivative asset/(liability)	(18)	0
Interest rate contracts | Cash Flow Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Total net derivative asset/(liability)	(1,208)	(534)
Interest rate contracts | Net Investment Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Total net derivative asset/(liability)	0	0
Interest rate contracts | Fair Value Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Total net derivative asset/(liability)	0
Interest rate contracts | Accounts payable and other
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(831)	(353)
Derivative liabilities, Amounts Available for Offset	0	0
Derivative liabilities, Total Net Derivative Instruments	(831)	(353)
Interest rate contracts | Accounts payable and other | Non-Qualifying Derivative Instruments
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(18)	0
Interest rate contracts | Accounts payable and other | Cash Flow Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(813)	(353)
Interest rate contracts | Accounts payable and other | Net Investment Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	0	0
Interest rate contracts | Accounts payable and other | Fair Value Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	0
Interest rate contracts | Other long-term liabilities
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(395)	(181)
Derivative liabilities, Amounts Available for Offset	0	0
Derivative liabilities, Total Net Derivative Instruments	(395)	(181)
Interest rate contracts | Other long-term liabilities | Non-Qualifying Derivative Instruments
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	0	0
Interest rate contracts | Other long-term liabilities | Cash Flow Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(395)	(181)
Interest rate contracts | Other long-term liabilities | Net Investment Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	0	0
Interest rate contracts | Other long-term liabilities | Fair Value Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	0
Commodity contracts
TOTAL DERIVATIVE INSTRUMENTS
Total net derivative asset/(liability)	444	(58)
Derivative liabilities, Total Net Derivative Instruments	444	(58)
Commodity contracts | Non-Qualifying Derivative Instruments
TOTAL DERIVATIVE INSTRUMENTS
Total net derivative asset/(liability)	439	(53)
Commodity contracts | Cash Flow Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Total net derivative asset/(liability)	5	(5)
Commodity contracts | Net Investment Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Total net derivative asset/(liability)	0	0
Commodity contracts | Fair Value Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Total net derivative asset/(liability)	0
Commodity contracts | Accounts receivable and other
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	963	163
Derivative assets, Amounts Available for Offset	(289)	(47)
Derivative assets, Total Net Derivative Instruments	674	116
Commodity contracts | Accounts receivable and other | Non-Qualifying Derivative Instruments
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	961	163
Commodity contracts | Accounts receivable and other | Cash Flow Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	2	0
Commodity contracts | Accounts receivable and other | Net Investment Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	0	0
Commodity contracts | Accounts receivable and other | Fair Value Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	0
Commodity contracts | Deferred amounts and other assets
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	68	17
Derivative assets, Amounts Available for Offset	(22)	(2)
Derivative assets, Total Net Derivative Instruments	46	15
Commodity contracts | Deferred amounts and other assets | Non-Qualifying Derivative Instruments
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	65	17
Commodity contracts | Deferred amounts and other assets | Cash Flow Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	3	0
Commodity contracts | Deferred amounts and other assets | Net Investment Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	0	0
Commodity contracts | Deferred amounts and other assets | Fair Value Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets	0
Commodity contracts | Accounts payable and other
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(506)	(173)
Derivative liabilities, Amounts Available for Offset	289	47
Derivative liabilities, Total Net Derivative Instruments	(217)	(126)
Commodity contracts | Accounts payable and other | Non-Qualifying Derivative Instruments
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(506)	(173)
Commodity contracts | Accounts payable and other | Cash Flow Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	0	0
Commodity contracts | Accounts payable and other | Net Investment Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	0	0
Commodity contracts | Accounts payable and other | Fair Value Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	0
Commodity contracts | Other long-term liabilities
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(81)	(65)
Derivative liabilities, Amounts Available for Offset	22	2
Derivative liabilities, Total Net Derivative Instruments	(59)	(63)
Commodity contracts | Other long-term liabilities | Non-Qualifying Derivative Instruments
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(81)	(60)
Commodity contracts | Other long-term liabilities | Cash Flow Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	0	(5)
Commodity contracts | Other long-term liabilities | Net Investment Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	0	0
Commodity contracts | Other long-term liabilities | Fair Value Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	0
Other contracts
TOTAL DERIVATIVE INSTRUMENTS
Total net derivative asset/(liability)	(8)	7
Derivative liabilities, Total Net Derivative Instruments	(8)	7
Other contracts | Non-Qualifying Derivative Instruments
TOTAL DERIVATIVE INSTRUMENTS
Total net derivative asset/(liability)	(4)	4
Other contracts | Cash Flow Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Total net derivative asset/(liability)	(4)	3
Other contracts | Net Investment Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Total net derivative asset/(liability)	0	0
Other contracts | Fair Value Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Total net derivative asset/(liability)	0
Other contracts | Accounts receivable and other
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets		4
Derivative assets, Amounts Available for Offset		0
Derivative assets, Total Net Derivative Instruments		4
Other contracts | Accounts receivable and other | Non-Qualifying Derivative Instruments
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets		3
Other contracts | Accounts receivable and other | Cash Flow Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets		1
Other contracts | Accounts receivable and other | Net Investment Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets		0
Other contracts | Deferred amounts and other assets
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets		3
Derivative assets, Amounts Available for Offset		0
Derivative assets, Total Net Derivative Instruments		3
Other contracts | Deferred amounts and other assets | Non-Qualifying Derivative Instruments
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets		1
Other contracts | Deferred amounts and other assets | Cash Flow Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets		2
Other contracts | Deferred amounts and other assets | Net Investment Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative assets		$ 0
Other contracts | Accounts payable and other
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(1)
Derivative liabilities, Amounts Available for Offset	0
Derivative liabilities, Total Net Derivative Instruments	(1)
Other contracts | Accounts payable and other | Non-Qualifying Derivative Instruments
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(1)
Other contracts | Accounts payable and other | Cash Flow Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	0
Other contracts | Accounts payable and other | Net Investment Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	0
Other contracts | Accounts payable and other | Fair Value Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	0
Other contracts | Other long-term liabilities
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(7)
Derivative liabilities, Amounts Available for Offset	0
Derivative liabilities, Total Net Derivative Instruments	(7)
Other contracts | Other long-term liabilities | Non-Qualifying Derivative Instruments
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(3)
Other contracts | Other long-term liabilities | Cash Flow Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	(4)
Other contracts | Other long-term liabilities | Net Investment Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	0
Other contracts | Other long-term liabilities | Fair Value Hedges | Designated as hedging instrument
TOTAL DERIVATIVE INSTRUMENTS
Derivative liabilities	$ 0

RISK MANAGEMENT AND FINANCIAL_5

RISK MANAGEMENT AND FINANCIAL INSTRUMENTS - Notional Principal or Quantity Information (Details) - Mar. 31, 2020 € in Millions, ¥ in Millions, £ in Millions, $ in Millions, $ in Millions	USD ($)MWhBcfMMBbls	CAD ($)MWhBcfMMBbls	GBP (£)MWhBcfMMBbls	EUR (€)MWhBcfMMBbls	JPY (¥)MWhBcfMMBbls
Foreign exchange contracts - forwards - purchase | United States dollar
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2020	$ 823
2021	500
2022	1,750
2023	0
2024	0
Thereafter	0
Derivative Notional Amount Outstanding	3,073
Foreign exchange contracts - forwards - purchase | Japanese yen
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2020 | ¥					¥ 0
2021 | ¥					0
2022 | ¥					72,500
2023 | ¥					0
2024 | ¥					0
Thereafter | ¥					0
Derivative Notional Amount Outstanding | ¥					¥ 72,500
Foreign exchange contracts - forwards - sell | United States dollar
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2020	4,416
2021	5,631
2022	5,703
2023	3,784
2024	1,856
Thereafter	0
Derivative Notional Amount Outstanding	$ 21,390
Foreign exchange contracts - forwards - sell | GBP
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2020 | £			£ 89
2021 | £			27
2022 | £			28
2023 | £			29
2024 | £			30
Thereafter | £			90
Derivative Notional Amount Outstanding | £			£ 293
Foreign exchange contracts - forwards - sell | Euro
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2020 | €				€ 23
2021 | €				94
2022 | €				94
2023 | €				92
2024 | €				91
Thereafter | €				515
Derivative Notional Amount Outstanding | €				€ 909
Interest rate contracts - short-term borrowings
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2020		$ 4,618
2021		4,284
2022		422
2023		50
2024		36
Thereafter		121
Derivative Notional Amount Outstanding		9,531
Interest rate contracts - long-term debt pay fixed rate
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2020		3,544
2021		1,619
2022		0
2023		0
2024		0
Thereafter		0
Derivative Notional Amount Outstanding		5,163
Equity contracts
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2020		16
2021		34
2022		0
2023		0
2024		0
Thereafter		0
Derivative Notional Amount Outstanding		$ 50
Commodity contracts | Natural gas
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2020 (bcf/mmbbls) | Bcf	(38)	(38)	(38)	(38)	(38)
2021 (bcf/mmbbls) | Bcf	57	57	57	57	57
2022 (bcf/mmbbls) | Bcf	45	45	45	45	45
2023 (bcf/mmbbls) | Bcf	22	22	22	22	22
2024 (bcf/mmbbls) | Bcf	10	10	10	10	10
Thereafter (bcf/mmbbls) | Bcf	11	11	11	11	11
Derivative Nonmonetary Notional Amount Outstanding | Bcf	107	107	107	107	107
Commodity contracts | Crude oil
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2020 (bcf/mmbbls) | MMBbls	5	5	5	5	5
2021 (bcf/mmbbls) | MMBbls	4	4	4	4	4
2022 (bcf/mmbbls) | MMBbls	1	1	1	1	1
2023 (bcf/mmbbls) | MMBbls	0	0	0	0	0
2024 (bcf/mmbbls) | MMBbls	0	0	0	0	0
Thereafter (bcf/mmbbls) | MMBbls	0	0	0	0	0
Derivative Nonmonetary Notional Amount Outstanding | MMBbls	10	10	10	10	10
Net purchase | Commodity contracts | Power
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2020 (MW/H) | MWh	79	79	79	79	79
Net sell | Commodity contracts | Power
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2021 (MW/H) | MWh	3	3	3	3	3
2022 (MW/H) | MWh	43	43	43	43	43
2023 (MW/H) | MWh	43	43	43	43	43
2024 (MW/H) | MWh	43	43	43	43	43
Thereafter (MW/H) | MWh	43	43	43	43	43
Derivative Nonmonetary Rate Notional Amount Outstanding | MWh	16	16	16	16	16

RISK MANAGEMENT AND FINANCIAL_6

RISK MANAGEMENT AND FINANCIAL INSTRUMENTS - Fair Value Derivatives (Details) - Fair Value Hedges - CAD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Foreign Currency Fair Value Hedge Derivative [Line Items]
Unrealized gain on derivative	$ 218	$ 0
Unrealized loss on hedged item	(203)	0
Realized loss on derivative	$ (12)	$ 0

RISK MANAGEMENT AND FINANCIAL_7

RISK MANAGEMENT AND FINANCIAL INSTRUMENTS - Earnings and Comprehensive Income (Details) - CAD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
The Effect of Derivative Instruments on the Statements of Earnings and Comprehensive Income
Amount of unrealized gain/(loss) recognized in OCI	$ (698)	$ (296)
Excluded components of fair value hedges	3	0
Amount of (gain) loss reclassified from AOCI to earnings	44	25
Estimated gain (loss) of AOCI related to cash flow hedges reclassified to earnings in the next 12 months	$ (164)
Maximum term of hedging exposures to variability of cash flows	21 months
Unrealized gain (loss) on derivatives	$ (1,556)	538
Non-Qualifying Derivative Instruments
The Effect of Derivative Instruments on the Statements of Earnings and Comprehensive Income
Unrealized gain (loss) on derivatives	(1,556)	538
Foreign exchange contracts
The Effect of Derivative Instruments on the Statements of Earnings and Comprehensive Income
Amount of (gain) loss reclassified from AOCI to earnings	1	2
Foreign exchange contracts | Non-Qualifying Derivative Instruments
The Effect of Derivative Instruments on the Statements of Earnings and Comprehensive Income
Unrealized gain (loss) on derivatives	(2,003)	616
Foreign exchange contracts | Non-Qualifying Derivative Instruments | Transportation and other services
The Effect of Derivative Instruments on the Statements of Earnings and Comprehensive Income
Unrealized gain (loss) on derivatives	(1,061)	352
Foreign exchange contracts | Non-Qualifying Derivative Instruments | Other income/(expense)
The Effect of Derivative Instruments on the Statements of Earnings and Comprehensive Income
Unrealized gain (loss) on derivatives	(942)	264
Interest rate contracts
The Effect of Derivative Instruments on the Statements of Earnings and Comprehensive Income
Amount of (gain) loss reclassified from AOCI to earnings	43	32
Interest rate contracts | Non-Qualifying Derivative Instruments
The Effect of Derivative Instruments on the Statements of Earnings and Comprehensive Income
Unrealized gain (loss) on derivatives	(18)	178
Commodity contracts | Non-Qualifying Derivative Instruments
The Effect of Derivative Instruments on the Statements of Earnings and Comprehensive Income
Unrealized gain (loss) on derivatives	473	(261)
Commodity contracts | Non-Qualifying Derivative Instruments | Transportation and other services
The Effect of Derivative Instruments on the Statements of Earnings and Comprehensive Income
Unrealized gain (loss) on derivatives	34	(26)
Commodity contracts | Non-Qualifying Derivative Instruments | Commodity sales
The Effect of Derivative Instruments on the Statements of Earnings and Comprehensive Income
Unrealized gain (loss) on derivatives	1,493	(642)
Commodity contracts | Non-Qualifying Derivative Instruments | Commodity costs
The Effect of Derivative Instruments on the Statements of Earnings and Comprehensive Income
Unrealized gain (loss) on derivatives	(1,045)	398
Commodity contracts | Non-Qualifying Derivative Instruments | Operating and administrative expense
The Effect of Derivative Instruments on the Statements of Earnings and Comprehensive Income
Unrealized gain (loss) on derivatives	(9)	9
Other contracts
The Effect of Derivative Instruments on the Statements of Earnings and Comprehensive Income
Amount of (gain) loss reclassified from AOCI to earnings	0	(9)
Other contracts | Non-Qualifying Derivative Instruments
The Effect of Derivative Instruments on the Statements of Earnings and Comprehensive Income
Unrealized gain (loss) on derivatives	(8)	5
Cash Flow Hedges | Foreign exchange contracts
The Effect of Derivative Instruments on the Statements of Earnings and Comprehensive Income
Amount of unrealized gain/(loss) recognized in OCI	19	(10)
Cash Flow Hedges | Interest rate contracts
The Effect of Derivative Instruments on the Statements of Earnings and Comprehensive Income
Amount of unrealized gain/(loss) recognized in OCI	(715)	(296)
Cash Flow Hedges | Commodity contracts
The Effect of Derivative Instruments on the Statements of Earnings and Comprehensive Income
Amount of unrealized gain/(loss) recognized in OCI	9	(3)
Cash Flow Hedges | Other contracts
The Effect of Derivative Instruments on the Statements of Earnings and Comprehensive Income
Amount of unrealized gain/(loss) recognized in OCI	(7)	12
Fair Value Hedges | Foreign exchange contracts
The Effect of Derivative Instruments on the Statements of Earnings and Comprehensive Income
Excluded components of fair value hedges	3	0
Net Investment Hedges | Foreign exchange contracts
The Effect of Derivative Instruments on the Statements of Earnings and Comprehensive Income
Amount of unrealized gain/(loss) recognized in OCI	$ (7)	$ 1

RISK MANAGEMENT AND FINANCIAL_8

RISK MANAGEMENT AND FINANCIAL INSTRUMENTS - Liquidity and Credit Risk (Details) - CAD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
LIQUIDITY RISK AND CREDIT RISK
Rolling time period over which the Company forecasts cash requirements	12 months
Period of anticipated requirements for which the Company maintains sufficient liquidity through committed credit facilities	1 year
Letters of credit issued in lieu of cash collateral	$ 0
Period after which receivables are classified as past due	30 days
Derivative instruments
LIQUIDITY RISK AND CREDIT RISK
Maximum credit exposure with respect to derivative instruments	$ 1,477,000,000	$ 394,000,000
Cash collateral on asset exposure	0	0
Derivative instruments | Canadian financial institutions
LIQUIDITY RISK AND CREDIT RISK
Maximum credit exposure with respect to derivative instruments	128,000,000	146,000,000
Derivative instruments | United States financial institutions
LIQUIDITY RISK AND CREDIT RISK
Maximum credit exposure with respect to derivative instruments	310,000,000	40,000,000
Derivative instruments | European financial institutions
LIQUIDITY RISK AND CREDIT RISK
Maximum credit exposure with respect to derivative instruments	165,000,000	3,000,000
Derivative instruments | Asian financial institutions
LIQUIDITY RISK AND CREDIT RISK
Maximum credit exposure with respect to derivative instruments	76,000,000	92,000,000
Derivative instruments | Other
LIQUIDITY RISK AND CREDIT RISK
Maximum credit exposure with respect to derivative instruments	$ 798,000,000	$ 113,000,000

RISK MANAGEMENT AND FINANCIAL_9

RISK MANAGEMENT AND FINANCIAL INSTRUMENTS - Fair Value of Derivatives (Details) - CAD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Fair Value of Derivatives
Total net derivative asset/(liability)	$ (3,664)	$ (1,687)
Foreign exchange contracts
Fair Value of Derivatives
Total net derivative asset/(liability)	(2,874)	(1,102)
Interest rate contracts
Fair Value of Derivatives
Total net derivative asset/(liability)	(1,226)	(534)
Commodity contracts
Fair Value of Derivatives
Total net derivative asset/(liability)	444	(58)
Other contracts
Fair Value of Derivatives
Total net derivative asset/(liability)	(8)	7
Recurring basis
Fair Value of Derivatives
Current derivative assets	1,068	328
Long-term derivative assets	441	101
Current derivative liabilities	(2,262)	(936)
Long-term derivative liabilities	(2,911)	(1,180)
Total net derivative asset/(liability)	(3,664)	(1,687)
Recurring basis | Foreign exchange contracts
Fair Value of Derivatives
Current derivative assets	105	161
Long-term derivative assets	373	81
Current derivative liabilities	(924)	(410)
Long-term derivative liabilities	(2,428)	(934)
Total net derivative asset/(liability)	(2,874)	(1,102)
Recurring basis | Interest rate contracts
Fair Value of Derivatives
Current derivative liabilities	(831)	(353)
Long-term derivative liabilities	(395)	(181)
Total net derivative asset/(liability)	(1,226)	(534)
Recurring basis | Commodity contracts
Fair Value of Derivatives
Current derivative assets	963	163
Long-term derivative assets	68	17
Current derivative liabilities	(506)	(173)
Long-term derivative liabilities	(81)	(65)
Total net derivative asset/(liability)	444	(58)
Recurring basis | Other contracts
Fair Value of Derivatives
Current derivative assets		4
Long-term derivative assets		3
Current derivative liabilities	(1)
Long-term derivative liabilities	(7)
Total net derivative asset/(liability)	(8)	7
Level 1 | Recurring basis
Fair Value of Derivatives
Current derivative assets	90	0
Long-term derivative assets	33	0
Current derivative liabilities	(58)	(5)
Long-term derivative liabilities	(13)	0
Total net derivative asset/(liability)	52	(5)
Level 1 | Recurring basis | Foreign exchange contracts
Fair Value of Derivatives
Current derivative assets	0	0
Long-term derivative assets	0	0
Current derivative liabilities	0	0
Long-term derivative liabilities	0	0
Total net derivative asset/(liability)	0	0
Level 1 | Recurring basis | Interest rate contracts
Fair Value of Derivatives
Current derivative liabilities	0	0
Long-term derivative liabilities	0	0
Total net derivative asset/(liability)	0	0
Level 1 | Recurring basis | Commodity contracts
Fair Value of Derivatives
Current derivative assets	90	0
Long-term derivative assets	33	0
Current derivative liabilities	(58)	(5)
Long-term derivative liabilities	(13)	0
Total net derivative asset/(liability)	52	(5)
Level 1 | Recurring basis | Other contracts
Fair Value of Derivatives
Current derivative assets		0
Long-term derivative assets		0
Current derivative liabilities	0
Long-term derivative liabilities	0
Total net derivative asset/(liability)	0	0
Level 2 | Recurring basis
Fair Value of Derivatives
Current derivative assets	178	198
Long-term derivative assets	392	96
Current derivative liabilities	(1,776)	(786)
Long-term derivative liabilities	(2,838)	(1,121)
Total net derivative asset/(liability)	(4,044)	(1,613)
Level 2 | Recurring basis | Foreign exchange contracts
Fair Value of Derivatives
Current derivative assets	105	161
Long-term derivative assets	373	81
Current derivative liabilities	(924)	(410)
Long-term derivative liabilities	(2,428)	(934)
Total net derivative asset/(liability)	(2,874)	(1,102)
Level 2 | Recurring basis | Interest rate contracts
Fair Value of Derivatives
Current derivative liabilities	(831)	(353)
Long-term derivative liabilities	(395)	(181)
Total net derivative asset/(liability)	(1,226)	(534)
Level 2 | Recurring basis | Commodity contracts
Fair Value of Derivatives
Current derivative assets	73	33
Long-term derivative assets	19	12
Current derivative liabilities	(20)	(23)
Long-term derivative liabilities	(8)	(6)
Total net derivative asset/(liability)	64	16
Level 2 | Recurring basis | Other contracts
Fair Value of Derivatives
Current derivative assets		4
Long-term derivative assets		3
Current derivative liabilities	(1)
Long-term derivative liabilities	(7)
Total net derivative asset/(liability)	(8)	7
Level 3 | Recurring basis
Fair Value of Derivatives
Current derivative assets	800	130
Long-term derivative assets	16	5
Current derivative liabilities	(428)	(145)
Long-term derivative liabilities	(60)	(59)
Total net derivative asset/(liability)	328	(69)
Level 3 | Recurring basis | Foreign exchange contracts
Fair Value of Derivatives
Current derivative assets	0	0
Long-term derivative assets	0	0
Current derivative liabilities	0	0
Long-term derivative liabilities	0	0
Total net derivative asset/(liability)	0	0
Level 3 | Recurring basis | Interest rate contracts
Fair Value of Derivatives
Current derivative liabilities	0	0
Long-term derivative liabilities	0	0
Total net derivative asset/(liability)	0	0
Level 3 | Recurring basis | Commodity contracts
Fair Value of Derivatives
Current derivative assets	800	130
Long-term derivative assets	16	5
Current derivative liabilities	(428)	(145)
Long-term derivative liabilities	(60)	(59)
Total net derivative asset/(liability)	328	(69)
Level 3 | Recurring basis | Other contracts
Fair Value of Derivatives
Current derivative assets		0
Long-term derivative assets		0
Current derivative liabilities	0
Long-term derivative liabilities	0
Total net derivative asset/(liability)	$ 0	$ 0

RISK MANAGEMENT AND FINANCIA_10

RISK MANAGEMENT AND FINANCIAL INSTRUMENTS - Level 3 Inputs (Details) $ in Millions	Mar. 31, 2020CAD ($)$ / bbl$ / MWh$ / MillionsofBTU-MMBTU$ / Gallon-gal	Dec. 31, 2019CAD ($)
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Fair Value	$ (3,664)	$ (1,687)
Recurring basis
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Fair Value	(3,664)	(1,687)
Level 3 | Recurring basis
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Fair Value	$ 328	$ (69)
Market approach valuation technique | Level 3 | Commodity Contracts - Financial | Natural gas | Minimum
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Forward price ($/mmbtu,barrel,gallon,MW/H) | $ / MillionsofBTU-MMBTU	1.81
Market approach valuation technique | Level 3 | Commodity Contracts - Financial | Natural gas | Maximum
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Forward price ($/mmbtu,barrel,gallon,MW/H) | $ / MillionsofBTU-MMBTU	5.15
Market approach valuation technique | Level 3 | Commodity Contracts - Financial | Natural gas | Weighted Average
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Forward price ($/mmbtu,barrel,gallon,MW/H) | $ / MillionsofBTU-MMBTU	3.18
Market approach valuation technique | Level 3 | Commodity Contracts - Financial | Crude oil | Minimum
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Forward price ($/mmbtu,barrel,gallon,MW/H) | $ / bbl	4.46
Market approach valuation technique | Level 3 | Commodity Contracts - Financial | Crude oil | Maximum
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Forward price ($/mmbtu,barrel,gallon,MW/H) | $ / bbl	96.53
Market approach valuation technique | Level 3 | Commodity Contracts - Financial | Crude oil | Weighted Average
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Forward price ($/mmbtu,barrel,gallon,MW/H) | $ / bbl	46.61
Market approach valuation technique | Level 3 | Commodity Contracts - Financial | Power | Minimum
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Forward price ($/mmbtu,barrel,gallon,MW/H) | $ / MWh	21
Market approach valuation technique | Level 3 | Commodity Contracts - Financial | Power | Maximum
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Forward price ($/mmbtu,barrel,gallon,MW/H) | $ / MWh	70.42
Market approach valuation technique | Level 3 | Commodity Contracts - Financial | Power | Weighted Average
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Forward price ($/mmbtu,barrel,gallon,MW/H) | $ / MWh	53
Market approach valuation technique | Level 3 | Commodity Contracts - Physical | Natural gas | Minimum
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Forward price ($/mmbtu,barrel,gallon,MW/H) | $ / MillionsofBTU-MMBTU	1.51
Market approach valuation technique | Level 3 | Commodity Contracts - Physical | Natural gas | Maximum
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Forward price ($/mmbtu,barrel,gallon,MW/H) | $ / MillionsofBTU-MMBTU	7.53
Market approach valuation technique | Level 3 | Commodity Contracts - Physical | Natural gas | Weighted Average
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Forward price ($/mmbtu,barrel,gallon,MW/H) | $ / MillionsofBTU-MMBTU	2.56
Market approach valuation technique | Level 3 | Commodity Contracts - Physical | Crude oil | Minimum
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Forward price ($/mmbtu,barrel,gallon,MW/H) | $ / bbl	7
Market approach valuation technique | Level 3 | Commodity Contracts - Physical | Crude oil | Maximum
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Forward price ($/mmbtu,barrel,gallon,MW/H) | $ / bbl	76.89
Market approach valuation technique | Level 3 | Commodity Contracts - Physical | Crude oil | Weighted Average
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Forward price ($/mmbtu,barrel,gallon,MW/H) | $ / bbl	28.24
Market approach valuation technique | Level 3 | Commodity Contracts - Physical | NGL | Minimum
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Forward price ($/mmbtu,barrel,gallon,MW/H) | $ / Gallon-gal	0.11
Market approach valuation technique | Level 3 | Commodity Contracts - Physical | NGL | Maximum
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Forward price ($/mmbtu,barrel,gallon,MW/H) | $ / Gallon-gal	1.20
Market approach valuation technique | Level 3 | Commodity Contracts - Physical | NGL | Weighted Average
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Forward price ($/mmbtu,barrel,gallon,MW/H) | $ / Gallon-gal	0.42
Market approach valuation technique | Level 3 | Recurring basis | Commodity Contracts - Financial | Natural gas
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Fair Value	$ (4)
Market approach valuation technique | Level 3 | Recurring basis | Commodity Contracts - Financial | Crude oil
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Fair Value	11
Market approach valuation technique | Level 3 | Recurring basis | Commodity Contracts - Financial | Power
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Fair Value	(57)
Market approach valuation technique | Level 3 | Recurring basis | Commodity Contracts - Physical | Natural gas
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Fair Value	36
Market approach valuation technique | Level 3 | Recurring basis | Commodity Contracts - Physical | Crude oil
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Fair Value	336
Market approach valuation technique | Level 3 | Recurring basis | Commodity Contracts - Physical | NGL
Significant unobservable inputs used in the fair value measurement of Level 3 derivative instruments
Fair Value	$ 6

RISK MANAGEMENT AND FINANCIA_11

RISK MANAGEMENT AND FINANCIAL INSTRUMENTS - Changes in Level 3 (Details) - CAD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Changes in net fair value of derivative assets and liabilities classified as Level 3
Level 3 net derivative liability at beginning of period	$ (69)	$ (11)
Total gain/(loss)
Included in earnings	349	(52)
Included in OCI	9	(3)
Settlements	39	(156)
Level 3 net derivative liability at end of period	$ 328	$ (222)

RISK MANAGEMENT AND FINANCIA_12

RISK MANAGEMENT AND FINANCIAL INSTRUMENTS - Other Financial Instruments (Details) - CAD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Fair Value of Other Financial Instruments
FMVA investments	$ 56		$ 99
Long-term debt, carrying value	68,100		64,400
Long-term debt	65,900		70,500
Net Investment Hedges
Fair Value of Other Financial Instruments
Unrealized foreign exchange gain (loss) on translation of United States dollar denominated debt	(708)	$ 108
Unrealized gain (loss) on change in fair value of outstanding forward exchange forward contracts	(7)	1
Realized gain (loss) associated with the settlement of foreign exchange forward contracts	0	0
Realized gain (loss) associated with the settlement of United Stated dollar denominated debt that matured	0	$ 0
Preferred share investment
Fair Value of Other Financial Instruments
Held to maturity investment at amortized cost	$ 566		580
Cumulative dividends based on average yield of Government of Canada bonds, maturity period of bonds	10 years
Cumulative dividends based on average yield of Government of Canada bonds, spread over reference rate (as a percent)	4.38%
Held to maturity investment, fair value	$ 566		580
Fair Value
Fair Value of Other Financial Instruments
Restricted long-term investments held in trust	443		434
Carrying value
Fair Value of Other Financial Instruments
Noncurrent notes receivable	$ 1,130		$ 1,026

INCOME TAXES (Details)

INCOME TAXES (Details)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Effective income tax rate (as a percent)	28.70%	22.40%

PENSION AND OTHER POSTRETIREM_3

PENSION AND OTHER POSTRETIREMENT BENEFITS (Details) - CAD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	$ 42	$ 51
Interest cost	33	51
Expected return on plan assets	(67)	(84)
Amortization of actuarial loss and prior service costs	9	7
Net periodic benefit costs	$ 17	$ 25

SUBSEQUENT EVENTS SUBSEQUENT EV

SUBSEQUENT EVENTS SUBSEQUENT EVENTS (Details) - Closed sale - Subsequent event $ in Millions, $ in Millions	May 01, 2020CAD ($)	Apr. 01, 2020USD ($)	Apr. 01, 2020CAD ($)
Ozark assets
Subsequent Event [Line Items]
Proceeds from dispositions		$ 43	$ 60
Montana-Alberta Tie Line assets
Subsequent Event [Line Items]
Proceeds from dispositions	$ 180