Represents the additional maturity term of debt instrument.

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The percentage of additional reduction on the interest rate margin due to repricing the debt instrument effective in the event the Leverage Ratio is as defined in the Credit Agreement .

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No definition available.

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The percentage of reduction on the interest rate margin due to repricing the debt instrument.

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Represents the minimum reference rate for variable rate of debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

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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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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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The percentage amount of reduction on the interest rate margin due to repricing the Credit Facilities.

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Upsizing borrowing capacity under the credit facility.

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The amount of debt that was repriced on the effective date.

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Number Of Banks

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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 Loans outstanding to achieve a target principal amount that declines quarterly based on a pre-determined specified schedule.

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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.

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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.

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No definition available.

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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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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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

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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.

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Amount, after accumulated amortization, of debt discount.

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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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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.

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No definition available.

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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.

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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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The cash outflow for loan and debt issuance costs.

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Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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Long-term debt - Credit Facilities (Details) $ in Millions, $ in Millions		1 Months Ended					12 Months Ended
	Apr. 13, 2016 USD ($)	Jan. 31, 2020 USD ($)	Oct. 31, 2018	Apr. 30, 2018	Oct. 31, 2017	Apr. 30, 2017	Dec. 31, 2020 USD ($) Lender	Dec. 31, 2020 CAD ($)	Mar. 31, 2020 USD ($)	Feb. 29, 2020 USD ($)	Dec. 31, 2019 USD ($)
Debt Instrument [Line Items]
Total debt							$ 487.2
Original issue discount amount							3.5				$ 5.8
Deferred financing costs							$ 1.7
Credit Facilities
Debt Instrument [Line Items]
Original issue discount (as a percent)							3.00%
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%
Senior secured term loan facility, due 2025 \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Applicable margin (as a percent)		2.50%
Minimum percentage of variable rate base		1.00%					1.00%
Senior unsecured notes, due June 2036
Debt Instrument [Line Items]
Amount drawn under loan								$ 210
APLP Holdings
Debt Instrument [Line Items]
Period of debt service covered by debt service reserve fund							6 months
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							6 months
APLP Holdings \| Letters of credit
Debt Instrument [Line Items]
Face amount of debt							$ 77.1
Outstanding balance of senior credit facility							$ 77.1
APLP Holdings \| Credit Facilities
Debt Instrument [Line Items]
Interest rate margin reduction due to repricing, as a percent			0.25%	0.50%	0.75%	0.75%
Amount of cash flow of APLP Holdings and its subsidiaries remaining after application of funds according to the Credit Agreement to be applied under	50.00%
APLP Holdings \| Credit Facilities \| Minimum
Debt Instrument [Line Items]
Applicable margin (as a percent)	4.00%
APLP Holdings \| Credit Facilities \| Maximum
Debt Instrument [Line Items]
Applicable margin (as a percent)	5.00%
Other percentage of cash flow required to reduce aggregate principal amount of new term loans outstanding to achieve target principal amount that declines	100.00%
APLP Holdings \| Credit Facilities \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Applicable margin (as a percent)			2.75%	3.00%	3.50%	4.25%
APLP Holdings \| Credit Facilities \| Through March 31,2023
Debt Instrument [Line Items]
Leverage ratio as defined in Credit Agreement							4.25	4.25
APLP Holdings \| Credit Facilities \| Through March 31,2023 \| Minimum
Debt Instrument [Line Items]
Interest coverage ratio as defined in Credit Agreement							3.5	3.5
APLP Holdings \| Credit Facilities \| Through March 31,2023 \| Maximum
Debt Instrument [Line Items]
Interest coverage ratio as defined in Credit Agreement							4.00	4.00
APLP Holdings \| Senior secured term loans
Debt Instrument [Line Items]
Face amount of debt	$ 700.0						$ 700.0
Prepayment of term loans if change of control occurs, as a percentage of par	101.00%
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	101.00%
APLP Holdings \| Revolver
Debt Instrument [Line Items]
Face amount of debt	$ 200.0
Outstanding balance of senior credit facility							$ 0.0
Borrowing capacity									$ 200.0	$ 180.0
Number Of Banks \| Lender							2
Deferred financing costs							$ 0.9
APLP Holdings \| Revolver \| Maximum
Debt Instrument [Line Items]
Upsizing borrowing capacity									$ 30.0
Borrowing capacity							210.0
APLP Holdings \| Senior secured term loan facility, due 2025
Debt Instrument [Line Items]
Total debt							307.5
Debt repriced		$ 307.5
Interest rate margin reduction due to repricing, as a percent		0.25%
Interest rate margin additional reduction due to repricing, as a percent		0.25%
Leverage ratio as defined in Credit Agreement		2.75
Term loan maturity		2 years
Deferred financing costs							0.8
Write-off of deferred financing costs							$ 0.5
APLP Holdings \| Senior secured term loan facility, due 2025 \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Applicable margin (as a percent)		2.50%
Minimum percentage of variable rate base		1.00%