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Commitments and Contingencies (Tables)
 12 Months Ended
Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Long-term Purchase Commitments The Registrants estimate the following commitments from 2023 through 2051, as detailed in the following tables:
202320242025202620272028 and ThereafterTotal
DTE Energy(In millions)
Long-term power purchase agreements(a)
$88 $104 $103 $103 $104 $885 $1,387 
Other purchase commitments(b)
4,039 2,101 959 549 400 1,019 9,067 
Total commitments$4,127 $2,205 $1,062 $652 $504 $1,904 $10,454 
202320242025202620272028 and ThereafterTotal
DTE Electric(In millions)
Long-term power purchase agreements(a)
$93 $109 $108 $109 $109 $900 $1,428 
Other purchase commitments(b)
703 524 332 124 80 203 1,966 
Total commitments$796 $633 $440 $233 $189 $1,103 $3,394 
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(a)The agreements represent the minimum obligations with suppliers for renewable energy and renewable energy credits under existing contract terms which expire from 2030 through 2047. DTE Electric's share of plant output ranges from 28% to 100%. Purchase commitments for DTE Electric include affiliate agreements with DTE Sustainable Generation that are eliminated in consolidation for DTE Energy.
(b)Excludes amounts associated with full requirements contracts where no stated minimum purchase volume is required.