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Income Taxes (Effective Income Tax Reconciliation) (Details) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Income Tax Disclosure [Abstract] |  |  |
U.S. federal corporate tax rate | 21.00% | 35.00% | 35.00%
Tax on international operations other than U.S. tax rate | 4.80% | (4.50%) | (2.90%)
Reversal of prior valuation allowance | 0.00% | (0.50%) | (0.30%)
Adjustments to reserves for unrecognized tax benefits | 0.20% | (0.20%) | (0.60%)
U.S. tax on international earnings, net of foreign tax credits | 0.20% | 0.10% | 1.30%
State income taxes, net of federal tax effect | 2.30% | 0.20% | 0.80%
U.S. research and development credits | (0.90%) | (0.80%) | (0.80%)
Excess tax benefits on share-based payments | (6.00%) | (14.10%) | 0.00%
Impact of 2017 Tax Act | (2.90%) | 15.90% | 0.00%
Tax on undistributed earnings of subsidiaries | (1.30%) | 4.40% | 0.00%
Venezuela deconsolidation | 0.00% | 1.70% | 0.00%
Other business credits and Section 199 Deduction | 0.00% | (0.60%) | (1.10%)
Other | 0.20% | (0.20%) | (0.10%)
Effective tax rate | 17.20% | 36.40% | 28.70%

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