Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details)	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
U.S. federal statutory rate	21.00%	21.00%	21.00%
State income tax, net of federal tax benefit	2.40%	2.30%	2.60%
Taxation on international earnings	(1.00%)	(1.10%)	(0.80%)
Foreign derived intangible income	(1.10%)	(1.10%)	(1.30%)
Share-based compensation from settlements	(5.90%)	(3.60%)	(4.70%)
Research and development credit	(0.80%)	(0.80%)	(0.90%)
Impact of Switzerland tax reform	(3.30%)	0.00%	0.00%
State income tax carryforwards	0.00%	0.00%	(0.20%)
Other, net	0.80%	1.40%	1.90%
Effective tax rate	12.10%	18.10%	17.60%

Effective Income Tax Rate Reconciliation, Foreign Derived Intangible Income

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Effective Income Tax Rate Reconciliation, State Income Tax Carryforwards

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Effective Income Tax Rate Reconciliation, Switzerland Tax Reform Effect, Percent

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to statutory income tax expense (benefit) outside of the country of domicile.

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Percentage of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to nondeductible expense for share-based payment arrangement.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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