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Income taxes (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
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Jun. 30, 2013
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Jun. 30, 2012
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Jun. 30, 2013
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Jun. 30, 2012
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| Income taxes | ||||
| Income tax benefit from continuing operations | $ 1.9 | |||
| Expected income tax expense | 1.7 | |||
| Permanent differences benefits generated from U.S. treasury grant proceeds, production tax credits and foreign exchange differences | 19.7 | |||
| Increase in the valuation allowance | 12.7 | |||
| Dividend withholding and preferred share taxes | 2.6 | |||
| Other permanent differences | 0.8 | |||
| Canadian enacted statutory rate (as a percent) | 25.00% | |||
| Components of income tax expenses (benefit) | ||||
| Current income tax expense | 3.4 | 3.0 | 5.4 | 3.8 |
| Deferred tax benefit | (2.8) | (8.3) | (7.3) | (26.0) |
| Total income tax expense (benefit) | 0.6 | (5.3) | (1.9) | (22.2) |
| Deferred tax assets: | ||||
| Valuations allowance | $ (127.1) | $ (127.1) | ||
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- Definition
The components of income tax expenses for the period representing the increase (decrease) in the entity's deferred tax assets and liabilities pertaining to continuing operations. No definition available.
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- Definition
The portion of the difference between total income tax expense or benefit as reported in the income statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pre-tax income from continuing operations attributable to dividend withholding tax under enacted tax laws. No definition available.
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to United States treasury grant proceeds, production tax credits and foreign exchange differences No definition available.
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- Details
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- Details
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- Definition
The component of income tax expense for the period representing amounts of income taxes paid or payable (or refundable) for the period for all income tax obligations as determined by applying the provisions of relevant enacted tax laws to relevant amounts of taxable Income or Loss from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to pretax Income or Loss from continuing operations; income tax expense or benefit may include interest and penalties on tax uncertainties based on the entity's accounting policy. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to changes in the valuation allowance for deferred tax assets in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The sum of the differences between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to nondeductible expenses under enacted tax laws, or differences in the methodologies used to determine expense amounts for financial statements prepared in accordance with generally accepted accounting principles and enacted tax laws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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