v3.5.0.2

Long-term debt - New Credit Facilities (Details) CAD in Millions, $ in Millions |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 26, 2016 USD ($) | Apr. 13, 2016 USD ($) | Jul. 26, 2015 USD ($) | Jul. 31, 2016 USD ($) | Apr. 30, 2016 USD ($) | Sep. 30, 2016 USD ($) | Jun. 30, 2016 CAD | Jun. 30, 2016 USD ($) | Sep. 30, 2015 USD ($) | Sep. 30, 2016 USD ($) | Sep. 30, 2015 USD ($) | Jul. 22, 2016 USD ($) | Jun. 17, 2016 | Apr. 13, 2016 CAD | Apr. 13, 2016 USD ($) | Dec. 31, 2015 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Original issue discount amount |  |  |  |  |  | $ 18.5 |  |  |  | $ 18.5 |  |  |  |  |  |
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% |  |  |  |  |  |
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 |  |  |  |  |  | $ 101.4 |  |  |  | $ 101.4 |  |  |  |  |  | $ 277.7
Convertible Debentures | 6.25% Debentures due March 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  |  | 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 |  |  |  |
Interest rate (as a percent) |  |  |  |  |  | 5.75% |  | 5.75% |  | 5.75% |  |  | 5.75% |  |  |
Convertible Debentures | 5.75% Debentures due June 2019 | Interest expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Write-off of deferred financing costs |  |  |  | $ 1.4 |  |  |  |  |  |  |  |  |  |  |  |
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] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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 |  |  |  | $ 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% |  |  |  |  |  |  |  |
APLP | Convertible Debentures | 5.6% Debentures due June 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  |  |  |  | 5.60% |  |  |  |  |  |  |  |

X
- Definition Amount of debt service reserve fund. + References No definition available. + Details
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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. + References No definition available. + Details
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- Definition Represents the amount of make whole premium on redemption of debt at a price equal to par plus accrued interest. + References No definition available. + Details
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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 as a percentage of total debt issued. + References No definition available. + Details
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- Definition Represents the write off amount of deferred financing cost related to repurchase for debt instrument. + References No definition available. + Details
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- Definition The interest coverage ratio as defined in the Credit Agreement, which is part of the requirements in the negative covenants of the Credit Agreement. + References No definition available. + Details
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- Definition The leverage ratio as defined in the Credit Agreement, which is part of the requirements in the negative covenants of the Credit Agreement. + References No definition available. + Details
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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 + References No definition available. + Details
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- Definition 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. + Details
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- Definition 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. + References No definition available. + Details
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- Definition 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. + References No definition available. + Details
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- Definition 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 + References No definition available. + Details
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- Definition Number of months of debt service covered by debt service reserve fund. + References No definition available. + Details
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- Definition 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. + References No definition available. + Details
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- Definition 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. + 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)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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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 -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + 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(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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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. + Details
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- Definition Percentage of principal amount of debt redeemed. + References No definition available. + Details
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- Definition Fair value amount of debt instrument that was repurchased. + References No definition available. + Details
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- Definition Face (par) amount of the original debt instrument that was repurchased. + References No definition available. + Details
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- Definition Amount, after accumulated amortization, of debt discount. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400 + Details
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