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Significant Accounting Policies (Financing Receivables Classified by Internal Grade of Credit Risk) (Details) $ in Millions | Mar. 31, 2025 USD ($)
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Notes receivable |
Financing receivables by year of origination |
2025 | $ 9
2024 | 673
2023 and Prior | 283
Total | 965
Notes receivable | DTE Electric |
Financing receivables by year of origination |
Total | 35
Notes receivable | Internal grade 1 |
Financing receivables by year of origination |
2025 | 7
2024 | 4
2023 and Prior | 27
Total | 38
Notes receivable | Internal grade 1 | DTE Electric |
Financing receivables by year of origination |
Total | 34
Notes receivable | Internal grade 2 |
Financing receivables by year of origination |
2025 | 2
2024 | 669
2023 and Prior | 256
Total | 927
Notes receivable | Internal grade 2 | DTE Electric |
Financing receivables by year of origination |
Total | 1
Net investment in leases |
Financing receivables by year of origination |
2025 | 0
2024 | 2
2023 and Prior | 35
Total | 37
Net investment in leases | DTE Electric |
Financing receivables by year of origination |
Total | 0
Net investment in leases | Internal grade 1 |
Financing receivables by year of origination |
2025 | 0
2024 | 0
2023 and Prior | 35
Total | 35
Net investment in leases | Internal grade 1 | DTE Electric |
Financing receivables by year of origination |
Total | 0
Net investment in leases | Internal grade 2 |
Financing receivables by year of origination |
2025 | 0
2024 | 2
2023 and Prior | 0
Total | 2
Net investment in leases | Internal grade 2 | DTE Electric |
Financing receivables by year of origination |
Total | $ 0

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