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Note 18 Impairment test assumptions CGU goodwill in Mexico (Details) - MEXICO
Dec. 31, 2021
Rate
Dec. 31, 2020
Rate
Dec. 31, 2019
Rate
Impairment test assumptions Mexico [Line Items]      
Discount rate applied to cash flow projections [1] 14.50% 15.30% 14.80%
Growth rate used to extrapolate cash flow projections 5.70% 5.70% 5.90%
[1] (*) After tax discount rates.