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Significant Accounting Policies (Financing Receivables Classified by Internal Grade of Credit Risk) (Details) $ in Millions | Mar. 31, 2024 USD ($)
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Notes receivable |
Financing receivables by year of origination |
2024 | $ 364
2023 | 23
2022 and Prior | 30
Total | 417
Notes receivable | DTE Electric |
Financing receivables by year of origination |
Total | 16
Notes receivable | Internal grade 1 |
Financing receivables by year of origination |
2024 | 0
2023 | 15
2022 and Prior | 4
Total | 19
Notes receivable | Internal grade 1 | DTE Electric |
Financing receivables by year of origination |
Total | 15
Notes receivable | Internal grade 2 |
Financing receivables by year of origination |
2024 | 364
2023 | 8
2022 and Prior | 26
Total | 398
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 |
2024 | 122
2023 | 0
2022 and Prior | 283
Total | 405
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 |
2024 | 0
2023 | 0
2022 and Prior | 36
Total | 36
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 |
2024 | 122
2023 | 0
2022 and Prior | 247
Total | 369
Net investment in leases | Internal grade 2 | DTE Electric |
Financing receivables by year of origination |
Total | $ 0

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