Business Combination, Provision Information, Initial Accounting Incomplete, Adjustment, Regulatory Assets

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- Definition

Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Noncurrent Liability, Other

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- Definition

Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Regulatory Liabilities

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No definition available.

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- Definition

Business Combination,Provisions Information, Initial Accounting Incomplete, Adjustment, Long-Term Debt

+ References

No definition available.

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- Definition

Public Utilities, Property, Plant and Equipment, Regulated Natural Gas Pipelines, in Kilometers

+ References

No definition available.

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- Definition

Public Utilities, Property, Plant and Equipment, Regulated Natural Gas Pipelines, in Miles

+ References

No definition available.

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- Definition

Public Utilities, Property, Plant and Equipment, Regulated Natural Gas Storage Facilities, in Billion Cubic Feet

+ References

No definition available.

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- Definition

Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
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- Definition

Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

+ References

No definition available.

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- Definition

This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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- Definition

This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to intangibles acquired in connection with a business combination for which the initial accounting was incomplete.

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- Definition

This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to property, plant, and equipment acquired in connection with a business combination for which the initial accounting was incomplete.

+ References

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- Definition

Monetary value of common stock allocated to investors to buy shares of a new issue of common stock before they are offered to the public. When stock is sold on a subscription basis, the issuer does not initially receive the total proceeds. In general, the issuer does not issue the shares to the investor until it receives the entire proceeds.

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- Definition

Number of common units of ownership outstanding of a limited liability company (LLC).

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No definition available.

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Price of a single share of a number of saleable stocks of a company.

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ACQUISITION OF COLUMBIA (Details) $ / shares in Units, shares in Millions, CAD in Millions, $ in Millions			6 Months Ended	12 Months Ended
	Jul. 01, 2016 USD ($) mi km $ / shares Bcf	Jul. 01, 2016 CAD	Dec. 31, 2016 CAD	Dec. 31, 2016 CAD	Jul. 01, 2016 CAD mi km Bcf	Jun. 30, 2016 $ / shares shares	Dec. 31, 2015 CAD	Dec. 31, 2014 CAD
Business Acquisition [Line Items]
Goodwill			CAD 13,958	CAD 13,958			CAD 4,812	CAD 4,034
Columbian Pipeline
Business Acquisition [Line Items]
Percentage of interests acquired	100.00%				100.00%
Purchase price \| $	$ 10,300
Share price (in usd per share) \| $ / shares	$ 25.5
Common stock, value, subscriptions					CAD 4,400
Investments of regulated natural gas pipelines (in kilometers) \| km	24,500				24,500
Investments of regulated natural gas pipelines (in miles) \| mi	15,200				15,200
Investments of regulated natural gas storage facilities (in billion cubic feet) \| Bcf	285				285
Goodwill	$ 7,700				CAD 10,078
Estimated increase (decrease) in fair value of acquired liabilities, long-term debt	231	CAD 300
Common unit, outstanding \| shares						53.8
Share price (in USD per share) \| $ / shares						$ 15.00
Acquisition costs					CAD 36
Pro revenue of acquiree since acquisition date			929
Pro forma information, earnings of acquiree since acquisition date			CAD 132
Bridge Loan \| Columbian Pipeline
Business Acquisition [Line Items]
Proceeds from lines of credit \| $	6,900
Natural Gas \| Columbian Pipeline
Business Acquisition [Line Items]
Increase (decrease) in fair value of property, plant, and equipment	646	840
Mining Properties and Mineral Rights \| Columbian Pipeline
Business Acquisition [Line Items]
Increase (decrease) in fair value of property, plant, and equipment	185	241
Pension Benefit Plans \| Columbian Pipeline
Business Acquisition [Line Items]
Increase in fair value of regulatory assets	12	15
Increase in fair value of other long-term liabilities	4	5
Decrease in fair value of intangibles and other assets	11	14
Decrease in fair value of regulatory liabilities	$ 2	CAD 2
U.S. federal \| Columbian Pipeline
Business Acquisition [Line Items]
Effective income tax rate percent				39.00%