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Subsidiaries (Schedule of Aggregate Cash Flows Derived for Group Result of Sale) (Details) - ILS (₪)
₪ in Millions
Dec. 31, 2020
Dec. 31, 2019
Disclosure of subsidiaries [line items]    
Consideration paid   ₪ (309)
Golan Telecom Ltd. [Member]    
Disclosure of subsidiaries [line items]    
Consideration paid ₪ (613)  
Cash in Golan 5  
Total ₪ (608)