Taxes on Income (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Effective income tax changes by percentage
Effective tax rate expressed as a percentage of pre-tax earnings	26.90%	15.10%
Effective income tax rate reduction for by expense in share based compensation	6.30%	6.40%
Effective income tax rate increase for impact of GILTI, net of FDII	4.50%	1.90%
Effective income tax rate increase for sale of plants	5.50%	1.40%
Effective income tax rate reduction for non-taxable income	4.70%	2.00%
Effective income tax rate increase for settlement of pension liability	8.50%	2.10%
Effective income tax rate reduction for federal tax credits	2.00%	1.20%