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Intangibles (Policies) | 12 Months Ended
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Dec. 31, 2023
Notes and other explanatory information [abstract] |
Intangibles | Intangibles are carried at acquisition cost, net of accumulated amortization and impairment charges. The estimated useful lives are as follows:
Schedule of estimated useful lives of intangibles |  |
|  | Useful life
Railway concessions |  | 5 to 37 years
Research and development project |  | 19 years
Software |  | 5 years

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- Definition The description of the entity's material accounting policy information for intangible assets and goodwill. [Refer: Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 117 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_117&doctype=Standard -URIDate 2023-03-23 + Details
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