Ifrs Statement Line Items

No definition available.

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- Definition

The present value, without deducting any plan assets, of expected future payments required to settle the obligation resulting from employee service in the current and prior periods. [Refer: Plan assets, at fair value]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 19
-IssueDate 2024-01-01
-Paragraph 57
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_57_a&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_DefinedBenefitObligationAtPresentValue
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fair value of defined benefit plan assets. Plan assets comprise assets held by a long-term employee benefit fund and qualifying insurance policies. [Refer: At fair value [member]]

+ References

+ Details

Name:	ifrs-full_PlanAssetsAtFairValue
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The fair value of any plan assets, less the present value of the defined benefit obligation. [Refer: Plan assets [member]]

+ References

+ Details

Name:	ifrs-full_SurplusDeficitInPlan
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

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Balance Type:
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- Details

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- Details

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- Details

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- Details

Name:	ifrs-full_NetDefinedBenefitLiabilityAssetAxis=cig_InitialNetLiabilitiesMember
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- Details

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Post-Employment Obligations - Schedule of Consolidated Actuarial Information (Details) - BRL (R$) R$ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
IfrsStatementLineItems [Line Items]
Fair value of plan assets	R$ 8,947	R$ 9,882
Net liabilities in the statement of financial position	4,306	5,417	R$ 5,693	R$ 6,205
Pension plans and retirement supplement plans [member]
IfrsStatementLineItems [Line Items]
Fair value of plan assets	8,947	9,882	9,198	9,378
Health plan [member]
IfrsStatementLineItems [Line Items]
Net liabilities in the statement of financial position	2,560	3,007	3,314	3,469
Dental plan [member]
IfrsStatementLineItems [Line Items]
Net liabilities in the statement of financial position	44	R$ 53	R$ 61	R$ 66
Actuarial assumption of expected rates of pension increases [member]
IfrsStatementLineItems [Line Items]
Present value of obligations	13,105
Fair value of plan assets	(8,947)
Net liabilities in the statement of financial position	4,306
Actuarial assumption of expected rates of pension increases [member] \| Initial net liabilities [member]
IfrsStatementLineItems [Line Items]
Net liabilities in the statement of financial position	4,158
Actuarial assumption of expected rates of pension increases [member] \| Effect of asset ceiling [member]
IfrsStatementLineItems [Line Items]
Net liabilities in the statement of financial position	148
Actuarial assumption of expected rates of pension increases [member] \| Pension plans and retirement supplement plans [member]
IfrsStatementLineItems [Line Items]
Present value of obligations	10,501
Fair value of plan assets	(8,947)
Net liabilities in the statement of financial position	1,702
Actuarial assumption of expected rates of pension increases [member] \| Pension plans and retirement supplement plans [member] \| Initial net liabilities [member]
IfrsStatementLineItems [Line Items]
Net liabilities in the statement of financial position	1,554
Actuarial assumption of expected rates of pension increases [member] \| Pension plans and retirement supplement plans [member] \| Effect of asset ceiling [member]
IfrsStatementLineItems [Line Items]
Net liabilities in the statement of financial position	148
Actuarial assumption of expected rates of pension increases [member] \| Health plan [member]
IfrsStatementLineItems [Line Items]
Present value of obligations	2,559
Net liabilities in the statement of financial position	2,559
Actuarial assumption of expected rates of pension increases [member] \| Health plan [member] \| Initial net liabilities [member]
IfrsStatementLineItems [Line Items]
Net liabilities in the statement of financial position	2,559
Actuarial assumption of expected rates of pension increases [member] \| Dental plan [member]
IfrsStatementLineItems [Line Items]
Present value of obligations	45
Net liabilities in the statement of financial position	45
Actuarial assumption of expected rates of pension increases [member] \| Dental plan [member] \| Initial net liabilities [member]
IfrsStatementLineItems [Line Items]
Net liabilities in the statement of financial position	R$ 45