Regulatory Matters (Ludington Accounting Application) (Details) - Ludington Hydroelectric Pumped Storage	Dec. 31, 2023	Nov. 30, 2022
DTE Electric
Jointly-Owned Utility Plant Interests [Line Items]
Ownership interest	49.00%	49.00%
Consumers Energy Company
Jointly-Owned Utility Plant Interests [Line Items]
Ownership interest		51.00%

The proportionate share of interest (percent) in a jointly owned utility plant.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 980
-SubTopic 360
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 10.C)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479960/980-360-S99-1

Name:	us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant