Approved by regulatory body, base cost of fuel and its recovery of prior period unrecovered fuel costs.

No definition available.

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- Definition

Excess fuel recvoery payable to customers.

+ References

No definition available.

+ Details

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- References

No definition available.

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- Definition

Public Utilties Fuel Costs Savings Achieved During the Period.

+ References

No definition available.

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- Definition

Percentage of public utility's approved rate increase (decrease) by regulatory agency.

+ References

No definition available.

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- Definition

Percentage of public utility's approved return on equity.

+ 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.

+ References

No definition available.

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- Definition

Percentage of public utility's requested equity to capital, including debt and equity.

+ References

No definition available.

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- Definition

The amount for the individual regulatory asset as itemized in a table of regulatory assets as of the end of the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 980
-SubTopic 340
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382

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- Definition

The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 980
-SubTopic 405
-Section 25
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6500807&loc=d3e48068-110394

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Regulatory Assets and Liabilities (ROE of NSPI) (Details) - CAD CAD in Millions		12 Months Ended
	Jul. 19, 2016	Dec. 31, 2016	Dec. 31, 2015
Public Utilities, General Disclosures [Line Items]
Regulatory Liabilities		CAD 1,639.0	CAD 465.0
Regulatory Assets		1,322.0	699.0
Fuel Adjustment Mechanism Asset [Member]
Public Utilities, General Disclosures [Line Items]
Regulatory Assets		CAD 0.0	CAD 14.0
Nova Scotia Power Inc. [Member] \| Fuel Adjustment Mechanism Asset [Member]
Public Utilities, General Disclosures [Line Items]
Regulated common equity component		40.00%
Approved average annual increase		(1.00%)
Public Utilities Prior Recovery of Prior Period Fuel Costs		CAD 12.0
Public Utilties Additional Contribution To Customers		0.2
Nova Scotia Power Inc. [Member] \| Fuel Adjustment Mechanism [Member]
Public Utilities, General Disclosures [Line Items]
Public Utilities Prior Recovery of Prior Period Fuel Costs		3.0
Public Utilties Fuel Costs Savings Achieved During the Period		2.8
Public Utilities refunds payable to customers		CAD 36.0
Nova Scotia Power Inc. [Member] \| Rate Stability Plan fuel costs for 2017 through 2019 [Member] \| Fuel Adjustment Mechanism Asset [Member]
Public Utilities, General Disclosures [Line Items]
Approved average annual increase	1.10%
Nova Scotia Power Inc. [Member] \| Minimum [Member] \| Fuel Adjustment Mechanism Asset [Member]
Public Utilities, General Disclosures [Line Items]
Public Utilities, Approved Return on Equity, Percentage		8.75%
Nova Scotia Power Inc. [Member] \| Maximum [Member] \| Fuel Adjustment Mechanism Asset [Member]
Public Utilities, General Disclosures [Line Items]
Public Utilities, Approved Return on Equity, Percentage		9.25%