Significant Accounting Policies (Details Textuals) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Significant Accounting Policies [Line Items]
Accounts receivable	$ 1,435		$ 1,632
Unrecognized compensation cost	$ 95
Recognition period (in years)	2 years
Specific review of probable future collections based on receivable balances, threshold duration	30 days
Past due
Significant Accounting Policies [Line Items]
Financing receivables	$ 0
Notes receivable
Significant Accounting Policies [Line Items]
Financing receivables	$ 417
Notes receivable | Minimum
Significant Accounting Policies [Line Items]
Number of days after which receivable is considered delinquent	60 days
Notes receivable | Maximum
Significant Accounting Policies [Line Items]
Number of days after which receivable is considered delinquent	120 days
DTE Electric and DTE Gas
Significant Accounting Policies [Line Items]
Threshold period past due for write-off of trade accounts receivable	150 days
DTE Electric and DTE Gas | Accounts receivable
Significant Accounting Policies [Line Items]
Number of days after which receivable is considered delinquent	21 days
DTE Electric | Notes receivable
Significant Accounting Policies [Line Items]
Financing receivables	$ 16
DTE Electric | Notes receivable | Minimum
Significant Accounting Policies [Line Items]
Number of days after which receivable is considered delinquent	60 days
DTE Electric | Notes receivable | Maximum
Significant Accounting Policies [Line Items]
Number of days after which receivable is considered delinquent	120 days
DTE Electric | DTE Energy
Significant Accounting Policies [Line Items]
Allocated costs	$ 8	$ 10
DTE Electric | DTE Energy | Federal and State Income Taxes
Significant Accounting Policies [Line Items]
Accounts receivable	7
DTE Electric | DTE Energy | Federal taxes
Significant Accounting Policies [Line Items]
Accounts receivable	5		$ 7
DTE Electric | DTE Energy | State taxes
Significant Accounting Policies [Line Items]
Accounts receivable	$ 2