Long-Term Debt (Scheduled Debt Maturities) (Details) $ in Millions	Dec. 31, 2022 USD ($)
Maturities of Long-term Debt [Abstract]
2023	$ 1,116
2024	2,416
2025	1,261
2026	819
2027	196
2028 and Thereafter	12,319
Long-term debt, total	18,127
DTE Electric
Maturities of Long-term Debt [Abstract]
2023	242
2024	440
2025	391
2026	219
2027	5
2028 and Thereafter	8,490
Long-term debt, total	$ 9,787

Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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