Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Federal statutory rate	21.00%	21.00%	21.00%
Foreign operations, net	2.60%	1.70%	(0.10%)
R&D tax credits	(1.80%)	(1.40%)	(0.50%)
State taxes, net of federal benefit	2.70%	2.90%	1.40%
Stock-based compensation	(2.30%)	(3.30%)	(1.30%)
Impact of UK tax rate change	1.70%	0.00%	0.00%
Divestitures	0.00%	0.00%	2.00%
Legal entity restructuring	(1.20%)	0.00%	(2.00%)
Other, net	0.00%	0.60%	(0.20%)
Effective income tax rate	22.70%	21.50%	20.30%