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Fair Value (Fair Value of Financial Instruments) (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Carrying amount |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Notes receivable | $ 417 | $ 175
Short-term borrowings | 290 | 1,283
Notes payable | 18 | 34
Long-term debt | 21,633 | 19,546
Carrying amount | DTE Electric |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Notes receivable | 16 | 19
Short-term borrowings | 210 | 385
Notes payable | 17 | 33
Long-term debt | 11,938 | 11,043
Fair value | Level 1 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Notes receivable | 0 | 0
Short-term borrowings | 0 | 0
Notes payable | 0 | 0
Long-term debt | 814 | 807
Fair value | Level 1 | DTE Electric |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Notes receivable | 0 | 0
Short-term borrowings | 0 | 0
Notes payable | 0 | 0
Long-term debt | 0 | 0
Fair value | Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Notes receivable | 0 | 0
Short-term borrowings | 290 | 1,283
Notes payable | 0 | 0
Long-term debt | 17,983 | 16,178
Fair value | Level 2 | DTE Electric |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Notes receivable | 0 | 0
Short-term borrowings | 210 | 385
Notes payable | 0 | 0
Long-term debt | 10,653 | 9,999
Fair value | Level 3 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Notes receivable | 452 | 181
Short-term borrowings | 0 | 0
Notes payable | 18 | 34
Long-term debt | 1,161 | 1,202
Fair value | Level 3 | DTE Electric |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Notes receivable | 16 | 19
Short-term borrowings | 0 | 0
Notes payable | 17 | 33
Long-term debt | $ 136 | $ 126

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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- Definition Fair value portion of notes payable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20,22) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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- Definition Fair value portion of an agreement for an unconditional promise by the maker to pay the holder a definite sum of money at a future date. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-10 + Details
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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date. + References No definition available. + Details
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