Income Taxes (Schedule of Effective Income Rate Reconciliation) (Details) - USD ($) $ in Millions |
1 Months Ended | 6 Months Ended | |
|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Income Taxes [Line Items] | |||
| U.S. federal income tax rate | 21.00% | 21.00% | |
| Increase (decrease) in income taxes from: | |||
| State and local income taxes, net of federal effect | 7.40% | 5.30% | |
| Renewable energy tax credits | (5.80%) | (5.70%) | |
| TCJA excess deferred taxes | (3.50%) | (3.60%) | |
| Taxes attributable to noncontrolling interests | 1.30% | 1.00% | |
| Other, net | 0.00% | 0.20% | |
| Effective tax rate | 20.40% | 18.20% | |
| Consumers Energy Company | |||
| Income Taxes [Line Items] | |||
| U.S. federal income tax rate | 21.00% | 21.00% | |
| Increase (decrease) in income taxes from: | |||
| State and local income taxes, net of federal effect | 6.70% | 4.80% | |
| Renewable energy tax credits | (3.50%) | (3.80%) | |
| TCJA excess deferred taxes | (2.90%) | (3.20%) | |
| Other, net | (0.30%) | 0.00% | |
| Effective tax rate | 21.00% | 18.80% | |
| Change in tax policy | $ 12 | ||
| X | ||||||||||
- Definition Income Taxes [Line Items] No definition available.
|
| X | ||||||||||
- Definition Increase (Decrease) In Income Tax Expense [Abstract] No definition available.
|
| X | ||||||||||
- Definition Amount of deferred state and local tax expense (benefit) attributable to income (loss) from continuing operations. Includes, but is not limited to, deferred regional, territorial, and provincial tax expense (benefit) for non-US (United States of America) jurisdiction. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the income tax rates. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to noncontrolling interest income (loss) exempt from income taxes. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other tax credits. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Details
|