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Accounts Receivable from The State of Minas Gerais - Additional Information (Detail) R$ in Millions | 12 Months Ended
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Dec. 31, 2017 BRL (R$)
Disclosure of accounts receivables [abstract] |
Reimburse from minas gerais state government | R$ 281
Historical amount from minas gerais state government | 239
Monetary adjustment from minas gerais state government | R$ 42
Payment description from Minas Gerais state government | 12 consecutive monthly installments
Amounts Received from Minas Gerais state government | R$ 46
Remaining amounts receivable from Minas Gerais state government | R$ 235

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- Definition Amounts Received from Minas Gerais state government + References No definition available. + Details
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Namespace Prefix: | xcmig_
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- Definition Historical amount from minas gerais state government. + References No definition available. + Details
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Namespace Prefix: | xcmig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Monetary adjustment from minas gerais state government. + References No definition available. + Details
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Namespace Prefix: | xcmig_
Data Type: | xbrli:monetaryItemType
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- Definition Payment description from Minas Gerais state government + References No definition available. + Details
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- Definition Remaining amounts receivable from Minas Gerais state government + References No definition available. + Details
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Namespace Prefix: | xcmig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration