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Taxes on Income (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2020
Effective income tax changes by percentage    
Effective tax rate expressed as a percentage of pre-tax earnings 23.90% 20.00%
Effective income tax rate reduction for federal tax credits 5.80% 7.00%
Effective income tax rate reduction for by expense in share based compensation 2.00% 7.10%
Effective income tax rate, increase for enacted tax rate changes 5.70% 3.80%
Effective income tax rate, foreign tax rate differential 2.10% 1.50%
Effective income tax rate increase for impact of foreign currency fluctuations on deferred tax assets 1.10% 3.80%
Effective income tax rate increase for goodwill impairment   3.40%