v3.25.2
Significant Accounting Policies (Financing Receivables Classified by Internal Grade of Credit Risk) (Details)
$ in Millions
Jun. 30, 2025
USD ($)
Notes receivable  
Year of Origination  
2025 $ 19
2024 749
2023 and Prior 284
Total 1,052
Notes receivable | DTE Electric  
Year of Origination  
Total 41
Notes receivable | Internal grade 1  
Year of Origination  
2025 13
2024 4
2023 and Prior 27
Total 44
Notes receivable | Internal grade 1 | DTE Electric  
Year of Origination  
Total 41
Notes receivable | Internal grade 2  
Year of Origination  
2025 6
2024 745
2023 and Prior 257
Total 1,008
Notes receivable | Internal grade 2 | DTE Electric  
Year of Origination  
Total 0
Net investment in leases  
Year of Origination  
2025 0
2024 2
2023 and Prior 35
Total 37
Net investment in leases | DTE Electric  
Year of Origination  
Total 0
Net investment in leases | Internal grade 1  
Year of Origination  
2025 0
2024 0
2023 and Prior 35
Total 35
Net investment in leases | Internal grade 1 | DTE Electric  
Year of Origination  
Total 0
Net investment in leases | Internal grade 2  
Year of Origination  
2025 0
2024 2
2023 and Prior 0
Total 2
Net investment in leases | Internal grade 2 | DTE Electric  
Year of Origination  
Total $ 0