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Equity (Share-based Payments to Employees, Non-marketable Options, Range of Exercise Prices) (Details)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure of terms and conditions of share-based payment arrangement [Line Items]      
Range of exercise price in Israeli Shekel 13.15-18.32 13.55-24.71 14.26-25.93
Range of exercise price in US Dollar 4.09-5.70 3.92-7.15 3.81-6.92