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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2020
Income Tax Disclosure [Abstract]  
Schedule of Effective Income Tax Rate Reconciliation
The Registrants' total Income Tax Expense varied from the statutory federal income tax rate for the following reasons:
202020192018
DTE Energy(In millions)
Income Before Income Taxes$1,538 $1,324 $1,216 
Income tax expense at 21% statutory rate$323 $278 $255 
State and local income taxes, net of federal benefit81 48 60 
Production tax credits(121)(128)(223)
TCJA regulatory liability amortization(76)(38)— 
Net operating loss carryback(34)— — 
AFUDC equity(4)(4)(14)
Employee Stock Ownership Plan dividends(4)(3)(3)
Investment tax credits(4)(4)(4)
Stock based compensation(3)(7)(3)
Enactment of the Tax Cuts and Jobs Act — 21 
Noncontrolling interests 1 — 
Depreciation2 
Other, net6 
Income Tax Expense$167 $152 $98 
Effective income tax rate10.9 %11.5 %8.1 %
202020192018
DTE Electric(In millions)
Income Before Income Taxes$887 $854 $857 
Income tax expense at 21% statutory rate$186 $179 $180 
State and local income taxes, net of federal benefit50 49 49 
TCJA regulatory liability amortization(62)(35)— 
Production tax credits(55)(45)(35)
Investment tax credits(4)(4)(3)
AFUDC equity(4)(4)(3)
Employee Stock Ownership Plan dividends(2)(2)(2)
Enactment of the Tax Cuts and Jobs Act — 
Depreciation2 
Other, net(2)(2)(2)
Income Tax Expense$109 $138 $193 
Effective income tax rate12.3 %16.2 %22.5 %
Schedule of Components of Income Tax Expense (Benefit)
Components of the Registrants' Income Tax Expense were as follows:
202020192018
DTE Energy(In millions)
Current income tax expense (benefit)
Federal$(247)$(184)$(17)
State and other income tax7 
Total current income taxes(240)(177)(16)
Deferred income tax expense
Federal310 275 38 
State and other income tax97 54 76 
Total deferred income taxes407 329 114 
$167 $152 $98 
202020192018
DTE Electric(In millions)
Current income tax expense
Federal$15 $25 $— 
State and other income tax5 16 
Total current income taxes20 41 
Deferred income tax expense
Federal30 51 131 
State and other income tax59 46 58 
Total deferred income taxes89 97 189 
$109 $138 $193 
Schedule of Deferred Tax Assets and Liabilities
The Registrants' deferred tax assets (liabilities) were comprised of the following at December 31:
DTE EnergyDTE Electric
2020201920202019
(In millions)
Property, plant, and equipment$(4,032)$(3,755)$(3,099)$(2,956)
Regulatory assets and liabilities(108)(47)(53)
Tax credit carry-forwards1,144 1,161 278 252 
Pension and benefits321 300 264 258 
Federal net operating loss carry-forward265 276  — 
State and local net operating loss carry-forwards155 117  — 
Investments in equity method investees(667)(465) — 
Other141 138 85 87 
(2,781)(2,275)(2,525)(2,355)
Less valuation allowance(41)(40) — 
Long-term deferred income tax liabilities$(2,822)$(2,315)$(2,525)$(2,355)
Deferred income tax assets$2,241 $2,264 $883 $865 
Deferred income tax liabilities(5,063)(4,579)(3,408)(3,220)
$(2,822)$(2,315)$(2,525)$(2,355)
Schedule of Unrecognized Tax Benefits Roll Forward
A reconciliation of the beginning and ending amount of unrecognized tax benefits for the Registrants is as follows:
202020192018
DTE Energy(In millions)
Balance at January 1$10 $10 $10 
Additions for tax positions of prior years — — 
Balance at December 31$10 $10 $10 
202020192018
DTE Electric(In millions)
Balance at January 1$13 $13 $13 
Additions for tax positions of prior years — — 
Balance at December 31$13 $13 $13