v3.5.0.2

Convertible debentures (Details) CAD in Millions, $ in Millions |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 13, 2016 CAD | Apr. 13, 2016 USD ($) | Dec. 29, 2015 USD ($) | Jul. 31, 2016 USD ($) | Apr. 30, 2016 USD ($) | Sep. 30, 2016 USD ($) | Sep. 30, 2015 USD ($) | Sep. 30, 2016 USD ($) | Sep. 30, 2015 USD ($) | Sep. 30, 2016 USD ($) | Dec. 31, 2015 USD ($) | Jul. 22, 2016 USD ($) | Jun. 30, 2016 USD ($) | Jun. 17, 2016 USD ($)
Convertible debentures |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debentures |  |  |  |  |  | $ 101.4 |  | $ 101.4 |  | $ 101.4 | $ 277.7 |  |  |
Foreign Currency Transaction Gain (Loss), before Tax |  |  |  |  |  | 3.4 | $ 21.7 | (19.1) | $ 49.1 |  |  |  |  |
Proceeds deposited with trustee in advance of payment of certain unsecured subordinated debentures |  | $ 110.7 |  |  |  |  |  |  |  |  |  |  |  |
Convertible Debentures |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debentures |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount of debt |  |  |  |  |  | 101.4 |  | 101.4 |  | 101.4 | 277.7 |  |  |
Less: unamortized deferred financing costs |  |  |  |  |  | $ (2.9) |  | $ (2.9) |  | $ (2.9) | (7.7) |  |  |
Gain on repurchase of convertible debentures |  |  |  |  |  |  |  |  |  |  | (3.1) |  |  |
Convertible Debentures | 6.25% Debentures due March 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debentures |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debentures |  |  |  |  |  |  |  |  |  |  | 48.6 |  |  |
Proceeds deposited with trustee in advance of payment of certain unsecured subordinated debentures | CAD | CAD 67.2 |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debentures stated interest rate percentage |  |  |  |  |  | 6.25% |  | 6.25% |  | 6.25% |  |  |  |
Convertible Debentures | 5.6% Debentures due June 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debentures |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debentures |  |  |  |  |  |  |  |  |  |  | 54.8 |  |  |
Proceeds deposited with trustee in advance of payment of certain unsecured subordinated debentures | CAD | CAD 75.8 |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debentures stated interest rate percentage | 5.60% | 5.60% |  |  |  | 5.60% |  | 5.60% |  | 5.60% |  |  |  |
Convertible Debentures | 5.75% Debentures due June 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debentures |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debentures |  |  |  |  |  | $ 42.6 |  | $ 42.6 |  | $ 42.6 | 117.0 |  |  | $ 65.0
Gain on repurchase of convertible debentures |  |  |  |  |  | $ 1.7 |  | $ 1.7 |  |  |  |  |  |
Convertible debentures stated interest rate percentage |  |  |  |  |  | 5.75% |  | 5.75% |  | 5.75% |  |  | 5.75% | 5.75%
Debentures purchased |  |  |  |  |  |  |  |  |  |  |  | $ 62.7 | $ 62.7 |
Debentures cancelled |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 62.7
Convertible Debentures | 6.00% Debenture due December 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debentures |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debentures |  |  |  |  |  | $ 61.7 |  | $ 61.7 |  | $ 61.7 | 65.0 |  |  |
Convertible debentures stated interest rate percentage |  |  |  |  |  | 6.00% |  | 6.00% |  | 6.00% |  |  |  |
Convertible Debentures | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debentures |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount that may be purchased, as a percentage of public float |  |  | 10.00% |  |  |  |  |  |  |  |  |  |  |
Convertible Debentures | Interest expense | 5.75% Debentures due June 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debentures |  |  |  |  |  |  |  |  |  |  |  |  |  |
Write-off of deferred financing costs |  |  |  | $ 1.4 |  |  |  |  |  |  |  |  |  |
Convertible Debentures | Interest expense | 5.6% Debentures Due June 2017 And 6.25% Debentures Due March 2017 (Member) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debentures |  |  |  |  |  |  |  |  |  |  |  |  |  |
Write-off of deferred financing costs |  |  |  |  | $ 1.3 |  |  |  |  |  |  |  |  |
Convertible Debentures | NCIB |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debentures |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount that may be purchased under the NCIB |  |  | $ 28.5 |  |  |  |  |  |  |  |  |  |  |
Repayment of convertible debentures |  |  |  |  |  |  |  |  |  | $ 18.8 | $ 24.8 |  |  |
Gain on repurchase of convertible debentures |  |  |  |  |  |  |  |  |  | $ (2.5) |  |  |  |

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- Definition The maximum amount of convertible debentures that may be purchased under the Normal Course Issuer Bid. + References No definition available. + Details
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- Definition Maximum percentage of public float that may be purchased under Normal Course Issuer Bid for the entity's convertible debentures. + References No definition available. + Details
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- Definition Fair value amount of debt instrument that was cancelled. + References No definition available. + Details
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- Definition Repayment of debenture instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder. + References No definition available. + Details
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- Definition The cash proceeds deposited with the trustee for the repayment in whole of certain senior unsecured subordinated debentures. + References No definition available. + Details
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- Definition The portion of the carrying value of convertible subordinated debt as of the balance sheet date that is scheduled to be repaid after one year or beyond the normal operating cycle if longer. This form of debt can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder, and places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets. + 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 + 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 Fair value amount of debt instrument that was repurchased. + References No definition available. + Details
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- Definition Represents the charge against earnings during the period for commitment fees and debt issuance expenses. + References 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) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Definition Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450222&loc=d3e30840-110895 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64836518&loc=d3e30700-110894 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=64836518&loc=d3e30690-110894 + Details
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- Definition Amount of gain (loss) from the difference between the repurchase price of a debt instrument initially issued by the entity and the net carrying amount of the debt at the time of its repurchase. + References No definition available. + Details
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- Definition The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset. + 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 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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