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Investment properties (Details 1) - ARS ($)
$ in Millions
Jun. 30, 2018
Jun. 30, 2017
Disclosure of detailed information about investment property [line items]    
Total $ 162,726 $ 99,953
Rental Properties [Member]    
Disclosure of detailed information about investment property [line items]    
Total 141,241 89,301
Undeveloped Parcels Of Land [Member]    
Disclosure of detailed information about investment property [line items]    
Total 12,608 7,647
Properties Under Development [Member]    
Disclosure of detailed information about investment property [line items]    
Total $ 8,877 $ 3,005