Significant Accounting Policies (Details Textuals) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Significant Accounting Policies [Line Items]
Unbilled revenues	$ 1,690,000,000	$ 1,632,000,000
Specific review of probable future collections based on receivable balances, threshold duration	30 days
Goodwill impairments	$ 0	0
Goodwill changes in carrying value	0	0
Intangible assets amortization expense	16,000,000	15,000,000	$ 16,000,000
Excise and sales taxes net impact on statement of operations	0
Charitable contributions	10,000,000	0	$ 0
Natural gas inventory
Significant Accounting Policies [Line Items]
LIFO inventory amount	69,000,000	73,000,000
Excess of replacement costs over stated LIFO value	81,000,000	50,000,000
Notes receivable
Significant Accounting Policies [Line Items]
Financing receivables	886,000,000
Notes receivable | Internal grade 1
Significant Accounting Policies [Line Items]
Financing receivables	5,000,000
Net investment in leases
Significant Accounting Policies [Line Items]
Financing receivables	40,000,000
Net investment in leases | Internal grade 1
Significant Accounting Policies [Line Items]
Financing receivables	36,000,000
Past due
Significant Accounting Policies [Line Items]
Financing receivables	$ 0
Minimum | Notes receivable
Significant Accounting Policies [Line Items]
Number of days after which receivable is considered delinquent	60 days
Maximum | Notes receivable
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	$ 44,000,000
DTE Electric | Notes receivable | Internal grade 1
Significant Accounting Policies [Line Items]
Financing receivables	43,000,000
DTE Electric | Net investment in leases
Significant Accounting Policies [Line Items]
Financing receivables	0
DTE Electric | Net investment in leases | Internal grade 1
Significant Accounting Policies [Line Items]
Financing receivables	0
Unbilled revenues
Significant Accounting Policies [Line Items]
Unbilled revenues	992,000,000	882,000,000
Unbilled revenues | DTE Electric
Significant Accounting Policies [Line Items]
Unbilled revenues	$ 303,000,000	$ 311,000,000