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REVENUES (Tables)

12 Months Ended

Dec. 31, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenues

Disaggregation of Revenues

year ended December 31, 2019	Canadian Natural Gas Pipelines		U.S. Natural Gas Pipelines		Mexico Natural Gas Pipelines		Liquids Pipelines		Power and Storage		Total
(millions of Canadian $)
Revenues from contracts with customers
Capacity arrangements and transportation	4,010		4,245		601		2,423		—		11,279
Power generation	—		—		—		—		662		662
Natural gas storage and other	—		650		2		4		73		729
	4,010		4,895		603		2,427		735		12,670
Other revenues1,2	—		83		—		452		50		585
	4,010		4,978		603		2,879		785		13,255

1 Other revenues include income from the Company's marketing activities, financial instruments and lease contracts. These arrangements are not in the scope of the revenue guidance. Refer to Note 9, Leases, and Note 25, Risk management and financial instruments, for additional information on income from lease arrangements and financial instruments, respectively.

2 Other revenues from U.S. Natural Gas Pipelines include the amortization of the net regulatory liabilities resulting from U.S. Tax Reform. Refer to Note 17, Income taxes, for additional information.

year ended December 31, 2018	Canadian Natural Gas Pipelines		U.S. Natural Gas Pipelines		Mexico Natural Gas Pipelines		Liquids Pipelines		Power and Storage		Total
(millions of Canadian $)
Revenues from contracts with customers
Capacity arrangements and transportation	4,038		3,549		614		2,079		—		10,280
Power generation	—		—		—		—		1,771		1,771
Natural gas storage and other	—		654		5		3		81		743
	4,038		4,203		619		2,082		1,852		12,794
Other revenues1,2	—		111		—		502		272		885
	4,038		4,314		619		2,584		2,124		13,679

1 Other revenues include income from the Company's marketing activities, financial instruments and lease contracts. These arrangements are not in the scope of the revenue guidance. Refer to Note 25, Risk management and financial instruments, for additional information on income from financial instruments.

2

Other revenues from U.S. Natural Gas Pipelines include the amortization of the net regulatory liabilities resulting from U.S. Tax Reform. Refer to Note 17, Income taxes, for additional information.

Contract Balances

Contract Balances

at December 31	2019			2018
(millions of Canadian $)
Receivables from contracts with customers	1,458			1,684
Contract assets (Note 7)	153			159
Long-term contract assets1	102			21
Contract liabilities2	61			11
Long-term contract liabilities (Note 16)	226			121

1 Recorded as part of Intangibles and other assets on the Consolidated balance sheet.

2 Comprised of deferred revenue recorded in Accounts payable and other on the Consolidated balance sheet. During the year ended December 31, 2019, $6 million (2018 – $17 million) of revenue was recognized that was included in the contract liability at the beginning of the year.

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- Definition

Tabular disclosure of contract balances and changes in contract balances.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130551-203045

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- Definition

Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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