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Income Taxes (Principal Components Of Deferred Income Tax Assets And Liabilities) (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Deferred income tax assets |  |
Tax loss and credit carryforwards | $ 332 | $ 483
Net regulatory tax liability | 349 | 372
Reserves and accruals | 32 | 62
Total deferred income tax assets | 713 | 917
Valuation allowance | (2) | (1)
Total deferred income tax assets, net of valuation allowance | 711 | 916
Deferred income tax liabilities |  |
Plant, property, and equipment | (2,395) | (2,287)
Employee benefits | (399) | (364)
Securitized costs | (46) | (53)
Gas inventory | (22) | (24)
Other | (59) | (51)
Total deferred income tax liabilities | (2,921) | (2,779)
Total net deferred income tax liabilities | (2,210) | (1,863)
Consumers Energy Company |  |
Deferred income tax assets |  |
Tax loss and credit carryforwards | 134 | 216
Net regulatory tax liability | 349 | 372
Reserves and accruals | 24 | 24
Total deferred income tax assets, net of valuation allowance | 507 | 612
Deferred income tax liabilities |  |
Plant, property, and equipment | (2,341) | (2,230)
Employee benefits | (388) | (365)
Securitized costs | (46) | (53)
Gas inventory | (22) | (24)
Other | (50) | (34)
Total deferred income tax liabilities | (2,847) | (2,706)
Total net deferred income tax liabilities | $ (2,340) | $ (2,094)

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- Definition The tax effect as of the balance sheet date of the amount of future tax deductions arising from tax carryforwards and the excesses of tax deductions over gross income in a year which cannot be used on the tax returns in the current year but can be carried forward to reduce taxable income or income taxes payable in a future year, for which there must be sufficient tax-basis income to utilize a portion or all of the carryforward amount to realize the deferred tax asset. + References No definition available. + Details
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319 + Details
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