Income Taxes - Components of deferred tax assets and liabilities (Details) - USD ($) $ in Millions |
Dec. 31, 2020 |
Dec. 31, 2019 |
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Non-current | ||
Tax gross up - regulatory items | $ 497.6 | $ 519.8 |
Deferred revenues | 104.2 | 106.3 |
Future tax benefits | 102.5 | 101.0 |
Other | 197.2 | 159.8 |
Total deferred tax assets | 901.5 | 886.9 |
Valuation allowance | (2.3) | (2.3) |
Net deferred tax assets | 899.2 | 884.6 |
Non-current | ||
Property-related | 3,721.0 | 3,609.0 |
Investment in affiliates | 647.2 | 531.7 |
Deferred costs - Plant retirements | 255.4 | 232.0 |
Employee benefits and compensation | 148.2 | 131.4 |
Other | 187.2 | 149.8 |
Total deferred tax liabilities | 4,959.0 | 4,653.9 |
Deferred tax liability, net | $ 4,059.8 | $ 3,769.3 |
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- Definition Amount of deferred tax liability attributable to taxable temporary differences. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred income. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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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/disclosureRef
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- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of deferred tax liability attributable to taxable temporary differences classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Deferred Tax Assets, Future Federal Tax Benefits, Non Current No definition available.
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- Definition Deferred Tax Assets Other Non Current. No definition available.
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- Definition Deferred Tax Assets, Tax Gross Up - Regulatory Items, Non Current No definition available.
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- Definition Employee benefits and compensation. No definition available.
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- Definition Deferred Tax Liabilities Investment in transmission affiliate, Non Current. No definition available.
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- Definition Deferred Tax Liabilities Net Non Current. No definition available.
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- Definition Deferred Tax Liabilities Other, Non Current. No definition available.
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