XML 233 R215.htm IDEA: XBRL DOCUMENT v3.24.1.u1
Financial Instruments and Risk Management - Schedule of Changes in Value of Options (Details) - Put option - SAAG [member] - BRL (R$)
R$ in Millions
 3 Months Ended 12 Months Ended
Jun. 30, 2023
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of detailed information about financial instruments [line items]        
Balance   R$ 672 R$ 636 R$ 536
Adjustment to fair value R$ 25 58 36 100
Related assets [1]   50    
Payment   (780)    
Balance   R$ 0 R$ 672 R$ 636
[1] With the acquisition of the share units then held by the Funds in the Investment Structure, Cemig GT became the holder of the related assets, which have aggregate value of R$50. This amount is recognized in Other assets in the Statement of financial position.