Amount of debt service reserve fund.

No definition available.

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- Definition

Represents the amount of accrued interest paid on redemption of debt at a price equal to par plus accrued interest.

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No definition available.

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Represents the amount of make whole premium on redemption of debt at a price equal to par plus accrued interest.

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The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized as a percentage of total debt issued.

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Represents the write off amount of deferred financing cost related to repurchase for debt instrument.

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The interest coverage ratio as defined in the Credit Agreement, which is part of the requirements in the negative covenants of the Credit Agreement.

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The leverage ratio as defined in the Credit Agreement, which is part of the requirements in the negative covenants of the Credit Agreement.

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- Definition

Such other amount of the cash flow, as a percentage, described in the Credit Agreement that is required to reduce the aggregate principal amount of New Term

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No definition available.

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The percentage of the principal amount of the term loans that would be required to be repaid, prepaid, refinanced or replaced if APLP elected to do so within one year of funding date.

+ References

No definition available.

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Percentage of the cash flow of APLP Holdings and its subsidiaries that remains after the application of funds, in accordance with a customary priority, to operations and maintenance expenses, debt service on the New Credit Facilities and the MTNs, funding of the debt service reserve account, debt service on other permitted debt of APLP Holdings and its subsidiaries, capital expenditures permitted under the Credit Agreement and payment on the preferred equity issued by Atlantic Power Preferred Equity Ltd. to be applied under mandatory prepayment provisions.

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The period of time during which APLP would be required to repay, prepay, refinance or replace at a price of 101 percent of the principal amount of all or any portion of the term loan facilities, if it elects to do so.

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No definition available.

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The number of days prior to the Letter of Credit Expiration Date as defined in the Credit Agreement that letters of credit area available to be issued under the

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No definition available.

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Number of months of debt service covered by debt service reserve fund.

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No definition available.

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The percentage of par value of the term loan that APLP may offer to prepay a lender if a Change of Control occurs, as defined in the Credit Agreement.

+ References

No definition available.

+ Details

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- Definition

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

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No definition available.

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- Definition

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 16
-Article 9

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- Definition

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Contractual interest rate for funds borrowed, under the debt agreement.

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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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Percentage of principal amount of debt redeemed.

+ References

No definition available.

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- Definition

Fair value amount of debt instrument that was repurchased.

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No definition available.

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Face (par) amount of the original debt instrument that was repurchased.

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No definition available.

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- Definition

The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

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- Definition

Amount of debt issuance costs (for example, but not limited to, legal, accounting, broker, and regulatory fees).

+ References

No definition available.

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Represents the charge against earnings during the period for commitment fees and debt issuance expenses.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
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The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

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The cash inflow from a debt initially having maturity due after one year or beyond the 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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-Name Accounting Standards Codification
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The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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The cash outflow to repay long-term debt that is not secured by collateral. Excludes repayments of tax exempt unsecured debt.

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Long-term debt - New Credit Facilities (Details) CAD in Millions, $ in Millions				1 Months Ended	3 Months Ended				6 Months Ended	9 Months Ended
	Jul. 26, 2016 USD ($)	Apr. 13, 2016 USD ($)	Jul. 26, 2015 USD ($)	Apr. 30, 2016 USD ($)	Jun. 30, 2016 CAD	Jun. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Jun. 17, 2016 USD ($)	Apr. 13, 2016 CAD	Apr. 13, 2016 USD ($)	Mar. 31, 2016	Dec. 31, 2015 USD ($)
Debt Instrument [Line Items]
Original issue discount amount						$ 19.7	$ 19.7		$ 19.7
Long-term debt excluding debentures \| Senior unsecured notes, due June 2036 (Cdn$210.0)
Debt Instrument [Line Items]
Interest rate (as a percent)						5.95%	5.95%		5.95%
Long-term debt excluding debentures \| Senior unsecured notes due 2018
Debt Instrument [Line Items]
Redemption price percentage of principal amount			104.50%
Debt Instrument, Repurchase Amount	$ 330.4
Interest rate (as a percent)			9.00%
Aggregate principal amount of debt repurchased			$ 310.9
Long-term debt excluding debentures \| Senior unsecured notes due 2018 \| Interest expense
Debt Instrument [Line Items]
Debt Instrument Redemption Applicable Make Whole Premium	14.0
Accrued interest paid in redemption of debt	$ 5.5
Debt Instrument Write Off of Deferred Financing Cost Related to Repurchase								$ 9.0		$ 9.0
Convertible Debentures
Debt Instrument [Line Items]
Aggregate principal amount of debt						$ 163.4	$ 163.4		$ 163.4						$ 277.7
Convertible Debentures \| 6.25% Debentures due March 2017
Debt Instrument [Line Items]
Interest rate (as a percent)						6.25%	6.25%		6.25%
Convertible Debentures \| 5.6% Debentures due June 2017
Debt Instrument [Line Items]
Interest rate (as a percent)						5.60%	5.60%		5.60%					5.60%
Convertible Debentures \| 5.6% Debentures Due June 2017 And 6.25% Debentures Due March 2017 (Member) \| Interest expense
Debt Instrument [Line Items]
Write-off of deferred financing costs				$ 1.3
Convertible Debentures \| 5.75% Debentures due June 2019
Debt Instrument [Line Items]
Redemption price percentage of principal amount					965.00%	965.00%
Debt Instrument, Repurchase Amount						$ 62.7	$ 62.7		$ 62.7		$ 62.7
Interest rate (as a percent)						5.75%	5.75%		5.75%		5.75%
Convertible Debentures \| 6.00% Debenture due December 2019
Debt Instrument [Line Items]
Interest rate (as a percent)						6.00%	6.00%		6.00%
APLP Holdings
Debt Instrument [Line Items]
Amount of cash flow of APLP Holdings and its subsidiaries remaining after application of funds according to the Credit Agreement to be applied under												50	50
APLP Holdings \| Minimum
Debt Instrument [Line Items]
Leverage ratio as defined in Credit Agreement												4.25	4.25
Interest coverage ratio as defined in Credit Agreement												2.75	2.75
APLP Holdings \| Maximum
Debt Instrument [Line Items]
Leverage ratio as defined in Credit Agreement												6.00	6.00
Interest coverage ratio as defined in Credit Agreement												4.00	4.00
Other percentage of cash flow required to reduce aggregate principal amount of new term loans outstanding to achieve target principal amount that declines												100	100
APLP Holdings \| Interest expense
Debt Instrument [Line Items]
Write-off of deferred financing costs							$ 30.2
APLP Holdings \| New Term Loans
Debt Instrument [Line Items]
Remaining proceeds of New Credit Facility						$ 43.0	$ 43.0		$ 43.0
Prepayment of term loans if change of control occurs, as a percentage of par												101	101
Period from initial funding date that APLP would be required to repay, prepay, refinance or replace at a price of 101 percent of the principal amount if they elect to do so for any portion or all of the term loan facilities		1 year
Percent of principal amount required to be repaid, prepaid, refinanced or replaced if APLP elects to do so within one year of initial funding date												101	101
APLP Holdings \| New Credit Facilities \| Minimum
Debt Instrument [Line Items]
Margin on variable interest rate									4.00%
APLP Holdings \| New Credit Facilities \| New Term Loans
Debt Instrument [Line Items]
Aggregate principal amount of debt													$ 700.0
Amount drawn under loan													700.0
Proceeds from debt, net of discount		$ 679.0
Original issue discount (as a percent)		3.00%
Original issue discount amount													21.0
Transaction costs and expenses						14.4
APLP Holdings \| New Credit Facilities \| New Term Loans \| Adjusted Eurodollar Rate
Debt Instrument [Line Items]
Margin on variable interest rate		5.00%
APLP Holdings \| New Credit Facilities \| New Revolver
Debt Instrument [Line Items]
Aggregate principal amount of debt													200.0
Number of days prior to the Letter of Credit Expiration Date that letters of credit are available to be issued		30 days
Commitment fee related to New Revolver, as a percent		0.75%
APLP Holdings \| New Credit Facilities \| Letters of credit
Debt Instrument [Line Items]
Aggregate principal amount of debt													$ 105.8
Period of debt service covered by debt service reserve fund		6 months
Amount of debt service reserve		$ 25.3
APLP Holdings \| Convertible Debentures \| 6.25% Debentures due March 2017
Debt Instrument [Line Items]
Redemption of convertible unsecured subordinated debentures \| CAD					CAD 67.2
APLP Holdings \| Convertible Debentures \| 5.6% Debentures due June 2017
Debt Instrument [Line Items]
Redemption of convertible unsecured subordinated debentures \| CAD					CAD 75.8
APLP Holdings \| Convertible Debentures \| 5.6% Debentures Due June 2017 And 6.25% Debentures Due March 2017 (Member)
Debt Instrument [Line Items]
Redemption of convertible unsecured subordinated debentures						110.7
APLP \| New Credit Facilities \| Maximum
Debt Instrument [Line Items]
Margin on variable interest rate									5.00%
APLP \| Long-term debt excluding debentures \| Senior secured term loan facility, due 2021
Debt Instrument [Line Items]
Redemption of senior secured term loan						$ 447.9
APLP \| Long-term debt excluding debentures \| Senior unsecured notes, due June 2036 (Cdn$210.0)
Debt Instrument [Line Items]
Aggregate principal amount of debt \| CAD												CAD 210.0
Interest rate (as a percent)												5.95%	5.95%
APLP \| Convertible Debentures \| 6.25% Debentures due March 2017
Debt Instrument [Line Items]
Interest rate (as a percent)						6.25%	6.25%		6.25%
APLP \| Convertible Debentures \| 5.6% Debentures due June 2017
Debt Instrument [Line Items]
Interest rate (as a percent)						5.60%	5.60%		5.60%