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Lease liability (Details 3) - USD ($)
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Notes and other explanatory information [abstract]    
Variable payments $ 1,035,000,000 $ 1,067,000,000
Variable maturity term $ 96 $ 109
Variable lease to fixed payments percentage 13.00% 17.00%