CMS Energy Corporation Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
Statement of Comprehensive Income [Abstract] | ||||
Amortization of net actuarial loss, tax | $ 0 | $ 0 | $ 0 | $ 0 |