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Business combinations - Schedule of earnout sensitivity analysis (Details) - Ultragaz Comercial Ltda [member] - Stella GD Intermediação de Geração Distribuída de Energia Ltda [member] R$ in Thousands | 12 Months Ended
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Dec. 31, 2022 BRL (R$)
Business combinations |
Goals | Accounting net cash flow and net revenue
Changes in goals | increase by <span style="border-left: none; border-right: none;"><span style="border-left: none; border-right: none;">25.0</span></span> p.p.
Increase in liability | R$ 33,146
Changes in goals | decrease by <span style="border-left: none; border-right: none;"><span style="border-left: none; border-right: none;">25.0</span></span> p.p.
Decrease in liabilities | R$ 26,940
Percentage of reasonably possible increase in actuarial assumptions for earnout liability | 25.00%
Percentage of reasonably possible decrease in actuarial assumptions for earnout liability | 25.00%

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