XML 97 R80.htm IDEA: XBRL DOCUMENT
v3.23.3

Short-Term Credit Arrangements and Borrowings (Details) - USD ($) | Sep. 30, 2023 | Jul. 31, 2023 | Jun. 30, 2023
--- | --- | --- | ---
Availability under combined facilities |  |  |
Maximum borrowing capacity | $ 3,175,000,000 |  |
Amounts outstanding | 1,384,000,000 |  |
Net availability | 1,791,000,000 |  |
DTE Electric |  |  |
Availability under combined facilities |  |  |
Maximum borrowing capacity | 900,000,000 |  |
Amounts outstanding | 679,000,000 |  |
Net availability | 221,000,000 |  |
DTE Gas |  |  |
Availability under combined facilities |  |  |
Maximum borrowing capacity | 300,000,000 |  |
Amounts outstanding | 190,000,000 |  |
Net availability | 110,000,000 |  |
DTE Energy |  |  |
Availability under combined facilities |  |  |
Maximum borrowing capacity | 1,975,000,000 |  |
Amounts outstanding | 515,000,000 |  |
Net availability | 1,460,000,000 |  |
Commercial paper issuances |  |  |
Availability under combined facilities |  |  |
Amounts outstanding | 1,217,000,000 |  |
Commercial paper issuances | DTE Electric |  |  |
Availability under combined facilities |  |  |
Amounts outstanding | 656,000,000 |  |
Commercial paper issuances | DTE Gas |  |  |
Availability under combined facilities |  |  |
Amounts outstanding | 190,000,000 |  |
Commercial paper issuances | DTE Energy |  |  |
Availability under combined facilities |  |  |
Amounts outstanding | 371,000,000 |  |
Letters of credit |  |  |
Availability under combined facilities |  |  |
Amounts outstanding | 167,000,000 |  |
Letters of credit | DTE Electric |  |  |
Availability under combined facilities |  |  |
Amounts outstanding | 23,000,000 |  |
Letters of credit | DTE Gas |  |  |
Availability under combined facilities |  |  |
Amounts outstanding | 0 |  |
Letters of credit | DTE Energy |  |  |
Availability under combined facilities |  |  |
Amounts outstanding | 144,000,000 |  |
Unsecured revolving credit facility, expiring October 2028 | Revolver borrowings |  |  |
Availability under combined facilities |  |  |
Maximum borrowing capacity | 2,600,000,000 |  |
Unsecured revolving credit facility, expiring October 2028 | Revolver borrowings | DTE Electric |  |  |
Availability under combined facilities |  |  |
Maximum borrowing capacity | 800,000,000 |  |
Unsecured revolving credit facility, expiring October 2028 | Revolver borrowings | DTE Gas |  |  |
Availability under combined facilities |  |  |
Maximum borrowing capacity | 300,000,000 |  |
Unsecured revolving credit facility, expiring October 2028 | Revolver borrowings | DTE Energy |  |  |
Availability under combined facilities |  |  |
Maximum borrowing capacity | 1,500,000,000 |  |
Unsecured letter of credit facility, expiring June 2024 | Letters of credit |  |  |
Availability under combined facilities |  |  |
Maximum borrowing capacity | 175,000,000 |  |
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 | 175,000,000 |  |
Unsecured letter of credit facility, expiring February 2025 | Letters of credit |  |  |
Availability under combined facilities |  |  |
Maximum borrowing capacity | 150,000,000 |  |
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 | 150,000,000 |  |
Unsecured letter of credit facility | Letters of credit |  |  |
Availability under combined facilities |  |  |
Maximum borrowing capacity | 100,000,000 |  |
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 | 100,000,000 |  |
Unsecured letter of credit facility | Letters of credit |  |  |
Availability under combined facilities |  |  |
Maximum borrowing capacity | 100,000,000 |  | $ 100,000,000
Unsecured letter of credit facility | Letters of credit | DTE Electric |  |  |
Availability under combined facilities |  |  |
Maximum borrowing capacity | 100,000,000 |  |
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 |  |
Unsecured letter of credit facility | Letters of credit |  |  |
Availability under combined facilities |  |  |
Maximum borrowing capacity | 50,000,000 |  |
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 | $ 50,000,000 | $ 50,000,000 |

X
- 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
Name: | us-gaap_LineOfCredit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_LineOfCreditFacilityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- 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
Name: | us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | dei_LegalEntityAxis=dte_DTEElectricMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=dte_DTEGasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=srt_ParentCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=us-gaap_CommercialPaperMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=dte_UnsecuredRevolvingCreditFacilityExpiringInOctober2028Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=dte_UnsecuredLetterOfCreditFacilityExpiringInJune2024Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=dte_UnsecuredLetterOfCreditFacilityExpiringInFebruary2025Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=dte_A100MillionUnsecuredLetterOfCreditFacilityOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=dte_A100MillionUnsecuredLetterOfCreditFacilityTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=dte_A50MillionUnsecuredLetterOfCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |