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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Long-term Purchase Commitments The Registrants estimate the following commitments from 2021 through 2051 for DTE Energy, and 2021 through 2051 for DTE Electric, as detailed in the following table:
DTE EnergyDTE Electric
(In millions)
2021$2,998 $1,132 
20221,142 246 
2023804 226 
2024520 159 
2025397 209 
2026 and thereafter1,634 969 
$7,495 $2,941