v3.19.3.a.u2

Income tax expense - Other (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Reconciliation of income taxes |  |  |
Tax expense | $ 9.8 | $ 0.2 | $ (58.1)
Computed income tax (benefit) expense at Canadian statutory rate | (9.2) | 10.1 | (39.3)
Impact related to withholding and state taxes |  | 0.5 |
Other permanent differences | 0.4 | 0.7 |
Deferred tax assets | 10.4 | 7.0 |
Deferred tax liabilities | 23.7 | 16.0 |
Net deferred tax liability | (13.3) | (9.0) |
Net deferred tax liability |  | 9.0 |
Capital gain (loss) on intercompany notes | 0.1 | (1.1) | (0.1)
Changes in tax rates | 2.2 | (3.3) | (1.5)
Valuation allowance | 145.4 | 139.7 |
Increase (decrease) in the valuation allowance | 5.7 | (6.7) | (34.6)
Operating in countries with different income tax rates | 0.1 | 0.1 | (20.1)
Foreign exchange | 1.7 |  | (2.4)
Dividend withholding tax and other cash taxes | 1.3 | 0.5 | 0.2
Impairments | 7.7 |  | $ 9.9
US |  |  |
Reconciliation of income taxes |  |  |
Net deferred tax liability | (23.7) | (16.0) |
Increase (decrease) in the valuation allowance | $ (2.2) | $ (6.6) |
Canada. |  |  |
Reconciliation of income taxes |  |  |
Enacted statutory income tax rate | 27.00% | 27.00% | 27.00%
Computed income tax (benefit) expense at Canadian statutory rate | $ (9.2) | $ 10.1 |
Net deferred tax liability | 10.4 | 7.0 |
Increase (decrease) in the valuation allowance | $ 7.9 | $ (0.1) |

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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. + References No definition available. + Details
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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 pretax income from continuing operations, that is attributable to total foreign exchange effect on income tax expense or benefit. + References No definition available. + Details
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- Definition Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to excess tax benefit for withholding taxes and state taxes. + References No definition available. + Details
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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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 20 -Section 45 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109238882&loc=d3e38679-109324 + Details
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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 increase (decrease) in the valuation allowance for deferred tax assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=116821951&loc=d3e32123-109318 + Details
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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 nondeductible impairment loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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