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Commitments and Contingencies (Tables)
 12 Months Ended
Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Long-term Purchase Commitments The Registrants estimate the following commitments from 2024 through 2051, as detailed in the following tables:
202420252026202720282029 and ThereafterTotal
DTE Energy(In millions)
Long-term power purchase agreements(a)
$92 $92 $92 $92 $92 $568 $1,028 
Other purchase commitments(b)
3,349 1,689 1,115 565 338 824 7,880 
Total commitments$3,441 $1,781 $1,207 $657 $430 $1,392 $8,908 
202420252026202720282029 and ThereafterTotal
DTE Electric(In millions)
Long-term power purchase agreements(a)
$98 $97 $97 $97 $97 $578 $1,064 
Other purchase commitments(b)
829 393 184 83 74 138 1,701 
Total commitments$927 $490 $281 $180 $171 $716 $2,765 
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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.