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Employee Benefits (Details 2) - ARS ($)
$ in Millions
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2017
Disclosure of defined benefit plans [line items]      
Total present value of defined benefits obligations (post-employment) $ 1,003 $ 1,069 $ 4,959
Fair value of plan assets (871) (921) (3,430)
Recognized liability for defined benefits obligations 132 148 1,529
Liability for other long-term benefits 477 23 8
Total recognized liabilities 609 171 1,537
Assets designed for payment of employee benefits (477)
Net position from employee benefits 132 171 1,537
Unfunded Obligations [Member]      
Disclosure of defined benefit plans [line items]      
Total present value of defined benefits obligations (post-employment) 430 492 1,356
Funded Obligations [Member]      
Disclosure of defined benefit plans [line items]      
Total present value of defined benefits obligations (post-employment) $ 573 $ 577 $ 3,603