RATE MATTERS - I&M Rate Matters (Details) - I&M - USD ($) $ in Millions |
1 Months Ended | |||
|---|---|---|---|---|
Jul. 30, 2025 |
Mar. 31, 2024 |
Apr. 30, 2025 |
Jan. 31, 2025 |
|
| Public Utilities, General Disclosures [Line Items] | ||||
| Earning test, over-earning credit to customers, proposed | $ 21 | |||
| Earning test, over-earning credit to customers, approved | $ 21 | |||
| 2023 Michigan Power Supply Cost Recovery | Subsequent Event | ||||
| Public Utilities, General Disclosures [Line Items] | ||||
| Public utilities, recommended disallowance purchased power | $ 3 | |||
| 2023 Michigan Power Supply Cost Recovery | Minimum | ||||
| Public Utilities, General Disclosures [Line Items] | ||||
| Public utilities, recommended disallowance purchased power | $ 3 | |||
| 2023 Michigan Power Supply Cost Recovery | Maximum | ||||
| Public Utilities, General Disclosures [Line Items] | ||||
| Public utilities, recommended disallowance purchased power | $ 15 | |||