Debt Instrument, Number Of Tranches

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- Definition

Debt Instrument, Sales Price, Ratio

+ References

No definition available.

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- Definition

Debt Instrument, Weighted Average LIfe

+ References

No definition available.

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- Definition

Interest Expense on Long-Term Liabilities, Net of Proceeds

+ References

No definition available.

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- Definition

Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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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

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

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- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

+ Details

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- Definition

Amount of interest payable on debt, including, but not limited to, trade payables.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

No definition available.

+ Details

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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Long-term debt - Narrative (Detail)					1 Months Ended	12 Months Ended
Long-term debt - Narrative (Detail)	Oct. 17, 2018 USD ($)	Mar. 24, 2017 USD ($) Tranche	Jan. 01, 2017 USD ($) Tranche	Dec. 30, 2016 USD ($)	Jun. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Jan. 01, 2019 CAD ($)	Jul. 25, 2018 CAD ($)	Feb. 23, 2018 USD ($)	Feb. 15, 2018 USD ($)	Dec. 21, 2017 USD ($)	Oct. 06, 2017 USD ($)	Oct. 05, 2017 CAD ($)	Sep. 20, 2017 CAD ($)	Jun. 30, 2017 USD ($)	Jan. 17, 2017 CAD ($)	Dec. 31, 2016 CAD ($)
Debt Instrument [Line Items]
Short-term debt						$ 321,807,000
Repayment of long-term debt						1,699,592,000	$ 2,366,105,000
Interest on long term debt						33,822,000	33,064,000
Interest expense during the year on long-term liabilities						150,262,000	142,791,000
Senior Unsecured Notes
Debt Instrument [Line Items]
Long-term debt						3,336,795,000	3,079,551,000
Senior Unsecured Notes \| U.S. Dollar Subordinated Unsecured Notes
Debt Instrument [Line Items]
Par value	$ 287,500					$ 287,500,000
Weighted average coupon	6.875%					6.88%
Long-term debt						$ 278,771,000	0
Senior Unsecured Notes \| Senior Unsecured Debenture Due February 2027
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity									$ 135,000,000
Par value																	$ 300,000,000
Maturity date																	4.09%
Debt instrument, sales price ratio																	0.99929
Senior Debt
Debt Instrument [Line Items]
Debt instrument, number of tranches \| Tranche		6
Debt instrument, weighted average life		15 years
Par value		$ 750,000,000
Weighted average coupon		4.00%
Effective weighted average interest rate		3.60%
Long-term debt							$ 479,000,000
Revolving Credit Facility \| Senior Unsecured Notes
Debt Instrument [Line Items]
Weighted average coupon						0.00%
Revolving Credit Facility \| Senior Unsecured Notes \| APUC Senior Unsecured Revolving Facility Maturing November 2017
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity															$ 165,000,000			$ 65,000,000
Revolving Credit Facility \| Senior Unsecured Notes \| Empire Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity										$ 500,000,000
Revolving Credit Facility \| Senior Unsecured Notes \| Liberty Power Bilateral Revolving Credit Facility Maturing August 2018
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity													$ 500,000,000	$ 350,000,000
Revolving Credit Facility \| Senior Unsecured Notes \| Algonquin Power Senior Unsecured Revolving Facility Maturing July 2019
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity											$ 200,000,000	$ 600,000,000
Amount draw on credit facility						$ 186,807,000
Line of Credit \| Bridge Loan \| Acquisition Facility
Debt Instrument [Line Items]
Amount draw on credit facility						$ 135,000,000
Proceed from long-term lines of credit				$ 1,336,440,000
Subsequent Event \| Senior Unsecured Notes \| Senior Unsecured Notes Due January 2029
Debt Instrument [Line Items]
Par value								$ 300,000
Weighted average coupon								4.60%
Debt instrument, sales price ratio								0.99952
Subsequent Event \| Bonds
Debt Instrument [Line Items]
Long-term debt								$ 135,000,000
Park Water Company \| Bonds
Debt Instrument [Line Items]
Long-term debt																$ 63,000,000
Empire
Debt Instrument [Line Items]
Long-term debt			$ 907,547,000
Empire \| U.S. Dollar Senior Unsecured Utility Notes
Debt Instrument [Line Items]
Debt instrument, number of tranches \| Tranche			2
Long-term debt			$ 102,000,000
Empire \| Secured Utility Notes
Debt Instrument [Line Items]
Debt instrument, number of tranches \| Tranche			10
Long-term debt			$ 733,000,000
Repayment of debt					$ 90,000,000
Empire \| Line of Credit \| Bridge Loan \| Acquisition Facility
Debt Instrument [Line Items]
Proceed from long-term lines of credit			$ 1,336,440,000
Minimum \| Senior Debt
Debt Instrument [Line Items]
Debt instrument, term		3 years
Minimum \| Empire \| U.S. Dollar Senior Unsecured Utility Notes
Debt Instrument [Line Items]
Maturity date			6.70%
Minimum \| Empire \| Secured Utility Notes
Debt Instrument [Line Items]
Maturity date			3.58%
Maximum \| Senior Debt
Debt Instrument [Line Items]
Debt instrument, term		30 years
Maximum \| Empire \| U.S. Dollar Senior Unsecured Utility Notes
Debt Instrument [Line Items]
Maturity date			5.80%
Maximum \| Empire \| Secured Utility Notes
Debt Instrument [Line Items]
Maturity date			6.82%
Interest Rate Reset, Period One \| Senior Unsecured Notes \| U.S. Dollar Subordinated Unsecured Notes
Debt Instrument [Line Items]
Basis spread on variable rate	3.677%
Interest Rate Reset, Period Two \| Senior Unsecured Notes \| U.S. Dollar Subordinated Unsecured Notes
Debt Instrument [Line Items]
Basis spread on variable rate	3.927%
Interest Rate Reset, Period Three \| Senior Unsecured Notes \| U.S. Dollar Subordinated Unsecured Notes
Debt Instrument [Line Items]
Basis spread on variable rate	4.677%