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CMS Energy Corporation Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Statement of Comprehensive Income [Abstract] |  |  |  |
Net gain arising during the period, tax | $ 0 | $ 0 | $ 0 | $ 0
Amortization of net actuarial loss, tax | 0 | 0 | 0 | 0
Amortization of prior service credit, tax | $ 0 | $ 0 | $ 0 | $ 0

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- Definition Amount of tax (expense) benefit of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) of defined benefit plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 12 -SubTopic 10 -Topic 220 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-12 + Details
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