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Liability for Employee Rights upon Retirement, Net (Details) - ILS (₪)
₪ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Disclosure of defined benefit plans [abstract]    
Liability for employee rights upon retirement, net ₪ 11 ₪ 19
Total liability 15 26
Fair value of the plan assets severance pay fund 11 15
Defined benefit plans expense 1 1
Group's liability for adaptation grants to employees ₪ 6 ₪ 8