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Short-Term Credit Arrangements and Borrowings (Details) $ in Millions | Jun. 30, 2023 USD ($)
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Availability under combined facilities |
Maximum borrowing capacity | $ 3,225
Amounts outstanding | 817
Net availability | 2,408
DTE Electric |
Availability under combined facilities |
Maximum borrowing capacity | 900
Amounts outstanding | 222
Net availability | 678
DTE Gas |
Availability under combined facilities |
Maximum borrowing capacity | 300
Amounts outstanding | 0
Net availability | 300
DTE Energy |
Availability under combined facilities |
Maximum borrowing capacity | 2,025
Amounts outstanding | 595
Net availability | 1,430
Commercial paper issuances |
Availability under combined facilities |
Amounts outstanding | 528
Commercial paper issuances | DTE Electric |
Availability under combined facilities |
Amounts outstanding | 222
Commercial paper issuances | DTE Gas |
Availability under combined facilities |
Amounts outstanding | 0
Commercial paper issuances | DTE Energy |
Availability under combined facilities |
Amounts outstanding | 306
Letters of credit |
Availability under combined facilities |
Amounts outstanding | 289
Letters of credit | DTE Electric |
Availability under combined facilities |
Amounts outstanding | 0
Letters of credit | DTE Gas |
Availability under combined facilities |
Amounts outstanding | 0
Letters of credit | DTE Energy |
Availability under combined facilities |
Amounts outstanding | 289
Unsecured revolving credit facility, expiring October 2027 | Revolver borrowings |
Availability under combined facilities |
Maximum borrowing capacity | 2,600
Unsecured revolving credit facility, expiring October 2027 | Revolver borrowings | DTE Electric |
Availability under combined facilities |
Maximum borrowing capacity | 800
Unsecured revolving credit facility, expiring October 2027 | Revolver borrowings | DTE Gas |
Availability under combined facilities |
Maximum borrowing capacity | 300
Unsecured revolving credit facility, expiring October 2027 | Revolver borrowings | DTE Energy |
Availability under combined facilities |
Maximum borrowing capacity | 1,500
Unsecured letter of credit facility, expiring June 2024 | Letters of credit |
Availability under combined facilities |
Maximum borrowing capacity | 275
Unsecured letter of credit facility, expiring June 2024 | Letters of credit | DTE Electric |
Availability under combined facilities |
Maximum borrowing capacity | 0
Unsecured letter of credit facility, expiring June 2024 | Letters of credit | DTE Gas |
Availability under combined facilities |
Maximum borrowing capacity | 0
Unsecured letter of credit facility, expiring June 2024 | Letters of credit | DTE Energy |
Availability under combined facilities |
Maximum borrowing capacity | 275
Unsecured letter of credit facility, expiring February 2025 | Letters of credit |
Availability under combined facilities |
Maximum borrowing capacity | 150
Unsecured letter of credit facility, expiring February 2025 | Letters of credit | DTE Electric |
Availability under combined facilities |
Maximum borrowing capacity | 0
Unsecured letter of credit facility, expiring February 2025 | Letters of credit | DTE Gas |
Availability under combined facilities |
Maximum borrowing capacity | 0
Unsecured letter of credit facility, expiring February 2025 | Letters of credit | DTE Energy |
Availability under combined facilities |
Maximum borrowing capacity | 150
Unsecured letter of credit facility | Letters of credit |
Availability under combined facilities |
Maximum borrowing capacity | 100
Unsecured letter of credit facility | Letters of credit | DTE Electric |
Availability under combined facilities |
Maximum borrowing capacity | 0
Unsecured letter of credit facility | Letters of credit | DTE Gas |
Availability under combined facilities |
Maximum borrowing capacity | 0
Unsecured letter of credit facility | Letters of credit | DTE Energy |
Availability under combined facilities |
Maximum borrowing capacity | 100
Unsecured letter of credit facility | Letters of credit |
Availability under combined facilities |
Maximum borrowing capacity | 100
Unsecured letter of credit facility | Letters of credit | DTE Electric |
Availability under combined facilities |
Maximum borrowing capacity | 100
Unsecured letter of credit facility | Letters of credit | DTE Gas |
Availability under combined facilities |
Maximum borrowing capacity | 0
Unsecured letter of credit facility | Letters of credit | DTE Energy |
Availability under combined facilities |
Maximum borrowing capacity | $ 0

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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + 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(b),22(b)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + 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(b),22(b)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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