Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
U.S. federal statutory rate	21.00%	21.00%	35.00%
State income tax, net of federal tax benefit	2.30%	2.60%	1.90%
Taxation on international earnings	(1.10%)	(0.80%)	(5.50%)
Foreign derived intangible income	(1.10%)	(1.30%)	0.00%
Share-based compensation from settlements	(3.60%)	(4.70%)	(7.30%)
Domestic manufacturing exclusions	0.00%	0.00%	(1.10%)
Research and development credit	(0.80%)	(0.90%)	(0.90%)
Impact of the 2017 Tax Act	0	0.005	0.094
State income tax carryforwards	0.00%	(0.20%)	(1.40%)
Other, net	1.40%	1.40%	0.80%
Effective tax rate	18.10%	17.60%	30.90%