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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 |

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- Definition Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481990/310-10-45-2 + Details
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