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Significant Accounting Policies (Financing Receivables Classified by Internal Grade of Credit Risk) (Details) $ in Millions | Sep. 30, 2025 USD ($)
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Notes receivable |
Year of Origination |
2025 | $ 133
2024 | 857
2023 and Prior | 280
Total | 1,270
Notes receivable | DTE Electric |
Year of Origination |
Total | 158
Notes receivable | Internal grade 1 |
Year of Origination |
2025 | 131
2024 | 4
2023 and Prior | 27
Total | 162
Notes receivable | Internal grade 1 | DTE Electric |
Year of Origination |
Total | 158
Notes receivable | Internal grade 1 | DTE Electric | Affiliates |
Year of Origination |
Total | 131
Notes receivable | Internal grade 2 |
Year of Origination |
2025 | 2
2024 | 853
2023 and Prior | 253
Total | 1,108
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

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