| Document and Entity Information Document and Entity Information | Mar. 12, 2021 | Jul. 28, 2020 |
| Entity Information [Line Items] | ||
| Document Type | 8-K | |
| Document Period End Date | Mar. 12, 2021 | |
| Entity File Number | 1-11607 | |
| Entity Registrant Name | DTE Energy Co | |
| Entity Incorporation, State or Country Code | MI | |
| Entity Tax Identification Number | 38-3217752 | |
| Entity Address, Address Line One | One Energy Plaza | |
| Entity Address, City or Town | Detroit | |
| Entity Address, State or Province | MI | |
| Entity Address, Postal Zip Code | 48226-1279 | |
| City Area Code | 313 | |
| Local Phone Number | 235-4000 | |
| Written Communications | false | |
| Soliciting Material | false | |
| Pre-commencement Tender Offer | false | |
| Pre-commencement Issuer Tender Offer | false | |
| Entity Emerging Growth Company | false | |
| Entity Central Index Key | 0000936340 | |
| Amendment Flag | false | |
| Common stock, without par value | ||
| Entity Information [Line Items] | ||
| Title of 12(b) Security | Common stock, without par value | |
| Trading Symbol | DTE | |
| Security Exchange Name | NYSE | |
| 2016 Series B 5.375% Junior Subordinated Debentures due 2076 | ||
| Entity Information [Line Items] | ||
| Title of 12(b) Security | 2016 Series B 5.375% Junior Subordinated Debentures due 2076 | |
| Trading Symbol | DTJ | |
| Security Exchange Name | NYSE | |
| 2016 Series F 6.00% Junior Subordinated Debentures due 2076 | ||
| Entity Information [Line Items] | ||
| Title of 12(b) Security | 2016 Series F 6.00% Junior Subordinated Debentures due 2076 | |
| Trading Symbol | DTY | |
| Security Exchange Name | NYSE | |
| 2017 Series E 5.25% Junior Subordinated Debentures due 2077 | ||
| Entity Information [Line Items] | ||
| Title of 12(b) Security | 2017 Series E 5.25% Junior Subordinated Debentures due 2077 | |
| Trading Symbol | DTW | |
| Security Exchange Name | NYSE | |
| 2019 6.25% Corporate Units | ||
| Entity Information [Line Items] | ||
| Title of 12(b) Security | 2019 6.25% Corporate Units | |
| Trading Symbol | DTP | |
| Security Exchange Name | NYSE | |
| 2020 Series G 4.375% Junior Subordinated Debentures due 2080 | ||
| Entity Information [Line Items] | ||
| Title of 12(b) Security | 2020 Series G 4.375% Junior Subordinated Debentures due 2080 | |
| Trading Symbol | DTB | |
| Security Exchange Name | NYSE | |
| DTE Electric | ||
| Entity Information [Line Items] | ||
| Entity File Number | 1-2198 | |
| Entity Registrant Name | DTE Electric Co | |
| Entity Incorporation, State or Country Code | MI | |
| Entity Tax Identification Number | 38-0478650 |
