Taxes on Income (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Effective income tax changes by percentage
Effective tax rate expressed as a percentage of pre-tax earnings	1.20%	23.90%	20.60%	20.00%
Effective income tax rate, reduction for foreign tax rate differences including tax holidays	3.50%	2.10%	3.10%	1.50%
Effective income tax rate reduction for expense in share based compensation	2.80%	2.00%	1.60%	7.10%
Effective income tax rate reduction for federal tax credits	13.90%	5.80%	5.80%	7.00%
Effective income tax rate, increase for enacted tax rate changes		5.70%	8.00%	3.80%
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%