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Fair Value (Fair Value of Financial Instruments) (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Carrying Amount |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Notes receivable | $ 80 | $ 150
Short-term borrowings | 1,162 | 758
Notes payable | 18 | 27
Long-term debt | 17,978 | 17,378
Carrying Amount | DTE Electric |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Notes receivable | 17 | 17
Short-term borrowings | 568 | 153
Notes payable | 17 | 27
Long-term debt | 9,696 | 8,907
Carrying Amount | DTE Electric | Affiliated entity |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Short-term borrowings | 27 | 53
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 | 710 | 2,284
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 1 | DTE Electric | Affiliated entity |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Short-term borrowings | 0 | 0
Fair Value | Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Notes receivable | 0 | 0
Short-term borrowings | 1,162 | 758
Notes payable | 0 | 0
Long-term debt | 14,084 | 15,425
Fair Value | Level 2 | DTE Electric |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Notes receivable | 0 | 0
Short-term borrowings | 568 | 153
Notes payable | 0 | 0
Long-term debt | 8,289 | 9,898
Fair Value | Level 2 | DTE Electric | Affiliated entity |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Short-term borrowings | 0 | 0
Fair Value | Level 3 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Notes receivable | 82 | 167
Short-term borrowings | 0 | 0
Notes payable | 18 | 27
Long-term debt | 1,199 | 1,207
Fair Value | Level 3 | DTE Electric |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Notes receivable | 17 | 17
Short-term borrowings | 0 | 0
Notes payable | 17 | 27
Long-term debt | 128 | 150
Fair Value | Level 3 | DTE Electric | Affiliated entity |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Short-term borrowings | $ 27 | $ 53

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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 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 -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611 + 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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